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Plumbing, Heating, or Cooling Issues?
DON'T CRY, CALL CPI!

Need immediate help unclogging a drain or replacing your HVAC equipment? Contact us today at (360) 219-9468 for quality plumbing, heating, and cooling services in northwest Washington.

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Welcome To CPI Plumbing and Heating

Your Trusted Mount Vernon Plumbing & HVAC Contractors

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Why Work With Us?

Looking for a reliable home services contractor who can provide you with honest advice and recommendations, quality workmanship, and long-term peace of mind? CPI Plumbing & Heating is your local Mount Vernon plumber and HVAC contractor committed to helping you enjoy a hassle-free experience.

We provide high-quality repairs, installations, and maintenance services for residential and commercial customers throughout Mount Vernon and surrounding areas in northwest Washington state.

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Personal Attention

Our team is passionate about customer service and helping our clients receive the quality solutions they deserve. We will take the time to listen to your plumbing and HVAC concerns and present you with solutions that fit your goals and budget.

Transparent Service

You will always know what to expect before work begins on your plumbing or HVAC system. We will go over the job details and pricing upfront, so you can make the best decision for your home or business and enjoy greater peace of mind.

Experienced Professionals

We are always looking for ways to better serve you. All of our team members continue to stay up to date on industry developments, including plumbing and building codes, to ensure that you receive nothing less than exceptional results.

Our Happy Customers

Job well done.
Jim Smith
Jim Smith
07:44 21 May 22
Knowledgeable, fast and quality installation
Tankless hot water heater flushed and maintained. Friendly, courteous and very helpful.
Timothy Hoon
Timothy Hoon
21:29 19 May 22
Best of Service-I could not be more pleased w the overall efficiency, explanation and courtesy. The technician was extremely helpful in the explanation of the job and answered all my questions. The job was done to my complete satisfaction. I have used CPI Plumbing several times over the past 4 years and always superb service. I feel very fortunate to have a Trusty Worthy Plumbing Company.
S.Katherine Cantrell
S.Katherine Cantrell
06:27 19 May 22
I can always depend on CPI responding to my calls very quickly. Their technicians are very knowledgeable and friendly,.
Wes Land
Wes Land
00:19 18 May 22
Everyone at CPI from the receptionist to Brannigan were extremely professional and courteous. We were given excellent advice moving forward and we will definitely work with them more in the future 👍🏽
Nicholas Lear
Nicholas Lear
00:25 11 May 22
River was a very nice young man, did a great job and kept checking things were working properly. He replaced our old garbage disposal and Hot Shot "faucet". Now everything is working great again!
Lisa Spegal
Lisa Spegal
22:11 09 May 22
Josh was the same quality of all technicians from CPI. Very professional, knowledgeable, and polite. Josh actually troubleshot and fixed our disposal. Due to the age, (17 years old) we decided to have him replace it.Thanks again CPI
Pat Ford
Pat Ford
06:05 07 May 22
Excellent, knowledgeable, and professional service. Aaron is an asset to the company.
Kitty Smith
Kitty Smith
22:16 05 May 22
diagnose water heater issue
peter Haase
peter Haase
23:07 03 May 22
They were super helpful when my furnace went out and needed to be replaced. Both the technicians and the office staff answered my questions and worked around my crazy schedule.
Robin Wold
Robin Wold
23:52 29 Apr 22
Aaron was super nice and efficient in cleaning out the dryer duct and explaining the issue that had been going on with my bathroom sink. I was super impressed and will definitely use CPI plumbing and heating again, thanks Aaron!
Georgia Fremon
Georgia Fremon
21:29 28 Apr 22
Friendly hardworking crew. Very professional. Worked out a lot of difficult problems dealing with my old house. I am thankful for all they have done for me.
kenneth lane shortt jr
kenneth lane shortt jr
19:59 27 Apr 22
We love Henry! He is efficient, friendly, on time, and knows what he's doing!!
Erin Walker
Erin Walker
00:35 27 Apr 22
Serviced our tankless water heater and a broken outdoor faucet.
Julia Paulen
Julia Paulen
21:02 26 Apr 22
The two plumbers for pleasant competent and friendly to deal with. My options were clearly laid out for me and I chose what was best for me.
Thomas P Dullum, Jr
Thomas P Dullum, Jr
00:48 22 Apr 22
Very good work. On time and was done the same day.
Alejandro Marquez
Alejandro Marquez
16:53 20 Apr 22
Very friendly, prompt and professional.
Diane Boeh
Diane Boeh
05:29 20 Apr 22
Wow. This team was very responsive, professional, and nice! They were able to get my water service line completely replaced in one day! and were able to take care of it faster and more affordable than anyone else. Very grateful for their hard work, attentiveness, and professionalism. You guys rock. Thank you CPI.
Shannon Crossen
Shannon Crossen
02:37 20 Apr 22
Receptionist was caring and very helpful. Scheduled our tankless water heater repair asap. Our technician was very polite and helpful explaining everything in detail. Even repeating the diagnosis with a call to my husband who was out of town. He stayed from 9:15 am to after 2pm fixing our hard water woes and we have warm water now. On a side not, are plumbers supposed to be this hot? I highly recommend CPI plumbing and heating.
Mandy
Mandy
21:56 18 Apr 22
the service technician was prompt,informative,very ovbservant,we appreciated the quick response,we had an active leak we could not stop they were here within 1 hour of our call and all repaired.
terrt norris
terrt norris
23:03 16 Apr 22
Trevor did a great job. kept us informed of all work taking place located clog and was very professional and good attitude. I am very happy with service especially since it was over weekend. thank you very much for the help and looking forward to the other services included.
David Perez
David Perez
17:44 16 Apr 22
Henry and Eli were so helpful, friendly and professional. They did a great job on the immediate, vital repairs and gave me a lot of options for updating and upgrading the system in the future.
Katies KindaCrafty
Katies KindaCrafty
15:17 16 Apr 22
Henry with CPI is one of a kind. He works tirelessly, and does high quality work. We always make sure to request him for the many jobs at our property. He is on-time, easy to talk to, patient, and efficient. Couldn't ask for more!
Kathryn Luera
Kathryn Luera
21:40 15 Apr 22
I was totally satisfied with the job Aron has done. He is polite and professionally explained all that he was doing. He completed the annual inspection of our furnace that CPI installed in a timely fashion. Martin
martin swan
martin swan
18:41 12 Apr 22
Brannigan was simply brilliant in his methodical process of interrogating our plumbing issues. He’s so knowledgeable and technically precise. A truly amazing and gifted plumber. Wow do we feel lucky to have him assigned to solve our many plumbing issues. We could not be happier. It’s rare when someone can exceed our expectations and Brannigan by far exceeded them. Thank you CPI Plumbing!!
Jennifer Richards
Jennifer Richards
23:53 11 Apr 22
River arrived on time and fully prepared to deal with our urgent plumbing need. He presented quite professionally, listened to the details of our problem and quickly went to work. He clearly explained everything regarding pricing and the steps he would take. I was thankful he wore shoe coverings so as to avoid tracking in any debris from outside. He had our problem fixed within a very short period of time.He was very friendly and personable! We had some great conversations about a wide variety of things whilst we were waiting to make sure the repairs completely remedied the problem, and they were.I highly recommend his services! And I DO NOT give praise lightly.
Jim Stiles
Jim Stiles
03:47 11 Apr 22
Aaron was very professional, informative and quick. He cleaned the area after his work and asked if I was satisfied with the service before I paid. Overall very good experience.
Vishal Saini
Vishal Saini
19:05 08 Apr 22
Great experience. CPI is responsive, organized and professional. Brannigan is experienced, polite and calm. Excellent people skills.We had him re-route waste drains and vents for a new shower and a walk-in bathtub remodel.Walk-in bathtubs are a bit of a strategic puzzle. You have to do everything right with no second chances. Brannigan was a real relief, I would recommend them highly 👍
Fredzo
Fredzo
19:38 07 Apr 22
Jose was great, helping with replacing a toilet and waterline. Had a septic tank alarm go off due to running toilet in night before. He was at my house by 9 next day. Had a replacement toilet and other needs in his truck. Actually an upgrade to a better quality toilet. He diagnosed the problem gave options and quoted fair prices.I have used CPI in the past and find them very reliable and safe. Jose had his mask on during his work here too. I great and speedy plumbing experience. Thanks!
Joyce Arnett Richards
Joyce Arnett Richards
21:19 05 Apr 22
Awesome team of guys that came to do the work. Professional , polite , knew their job , and came on time. Could not have asked for better. Will highly recommend to people I know.
Linda Tafari
Linda Tafari
21:04 05 Apr 22
Absolutely quick, affordable and the Plumber was a Great guy. Absolutely will recommend CPI to everyone.
Senovia Lehman
Senovia Lehman
23:12 01 Apr 22
Steve was exceptional. Also, office staff including Sydney and Elizabeth were very helpful. I felt taken care of. CPI also installed a water softener system for us. I would not hesitate to use CPI again.
Lesley Mills
Lesley Mills
01:06 01 Apr 22
Having drainage issues. He spent all afternoon tracking down what the problem is and will have to return to replace outside sewer connection when the my deck is removed for replacement in a couple of weeks.
Marian Ericson
Marian Ericson
00:23 31 Mar 22
Although our issue was scheduled for Tuesday, Aaron called on Monday to request he tackle our problem a day early. We gave an okay and he showed up 15 mins later.Aaron went to work immediately by appraising the problem, offering us a couple of alternatives and providing an estimate for each alternative. We agreed on the method and materials. This was not an easy job because the old faucet and plumbing were ancient. Yet, after several consultations with us, Aaron arrived at a workable solution and the job was nicely completed.We are very satisfied with Aaron's work. We found him easy to work with and his determination to re-engineer the plumbing was greatly appreciated.
John Arnold
John Arnold
15:05 29 Mar 22
Extremely pleased with the service I received from CPI. Fast response, punctual, professional, friendly. Definitely recommend and will be using them for all my future plumbing needs.
Tommy Bravo
Tommy Bravo
03:07 29 Mar 22
Henry and his apprentices were timely and thorough. I think they did a very professional job of replumbing our house. I would be pleased to have Henry work for me again.
Pete Cilley
Pete Cilley
19:02 25 Mar 22
Manny and intern Elijah installed a new kitchen faucet. Not only is Manny a very qualified plumber, he is a teacher. I felt well taken care of. His mastery was essential for what would have been complicated if he'd not known his expertise in removal of an old faucet and replace a new one. Thank You Manny and Elijah!BL
Bekky Love
Bekky Love
12:43 25 Mar 22
Excellent service performed same day as requested. Pricey but I got what I paid for. Serviceman Aaron was very knowledgeable, thorough, compassionate, and focused.
Susan D'Alessandro
Susan D'Alessandro
22:37 22 Mar 22
We needed to have our dryer vent cleaned out and Jake did his usual great, professional job for us.
Harry Anderson
Harry Anderson
21:59 22 Mar 22
Josh was awesome! Very polite, respectful and efficient. Can't say enough good about the services Josh and CPI provided! Thank you!
Debbie Shupien
Debbie Shupien
20:30 21 Mar 22
Mr. Evans was very professional, trustworthy, and did quality work. Very satisfied customer.
Sharon Andrews
Sharon Andrews
23:17 18 Mar 22
Courteous careful professionals. Glad to see they are taking on and teaching apprentices as well. They did a good job.
Kristine Kuhns
Kristine Kuhns
17:54 17 Mar 22
I couldn't have had a more professional, knowledgeable or considerate crew. Josh and crew were considerate, they explained what repairs were needed and why as well as kept me informed throughout the process. To top it all off they saved me money too! It's nice to know I have someone I can trust when I need their services.
Alan Smith
Alan Smith
03:09 17 Mar 22
excellent job!
Maria Papritz
Maria Papritz
19:52 12 Mar 22
Prompt service. Cordial employees. Not cheap but excellent outcome.
g.h.kirsch
g.h.kirsch
17:56 12 Mar 22
Jon replaced a leaking hose bib. He had to go through the wall. I was skeptical but he put in an access panel and I didn't have sheetrock to repair. He was very professional, friendly, knowledgeable and the job was done in a short time.
Andrea Saxton
Andrea Saxton
05:39 11 Mar 22
Trevor arrived on time and repaired/replaced everything that was leaking under my kitchen sink and replaced the waterline to my laundry room.He is very professional and was really good with my three yapping dogs. Thank you Trevor!
Mitchell Lindquist
Mitchell Lindquist
23:48 09 Mar 22
Good service, excellent follow-up on one pickup itemJohn
John M. Barry
John M. Barry
19:08 06 Mar 22
Brannigan was excellent to work with and we appreciated his expertise and knowledge regarding our issue.
Mark Johnson
Mark Johnson
05:29 05 Mar 22
Cold water in kitchen was a dribble. Hose under sink was linked. Took less than 5 minutes to fix and he did not charge us. Very nice and professional man!
Janet Dillard
Janet Dillard
12:53 03 Mar 22
Amazing communicators, very responsive and great work ethic. We have a complicated hot water system...includes in floor heat...they have it well under control!
Sharon Fakkema
Sharon Fakkema
00:21 03 Mar 22
Was contacted and situation was reassessed. Review has been updated as a result of recent updates. Originally was not happy with the troubleshooting done; however, CPI has since been back out and provided more comprehensive troubleshooting to address the issues we were having.
Brian Keller
Brian Keller
23:30 28 Feb 22
The three gentlemen that came and did our pipe replaced our old pipes were very pleasant and professional, left the house inside and out clean also.
Joanne Chernikoff
Joanne Chernikoff
03:12 24 Feb 22
Wonderful service 😊
Donna Lima
Donna Lima
22:15 23 Feb 22
Josh and his assistant David arrived on time and performed my water heater replacement in a timely and professional manner. I was very impressed with both their technical performance and their demeanor while performing my replacement. Was very satisfied with everything they did.
Billy Swisher
Billy Swisher
16:13 22 Feb 22
Expensive, job was to replace plastic T connector under sink so I could get new dishwasher installed. Nothing was broken or leaking. But work completed in timely manner.
Ladell G
Ladell G
17:46 21 Feb 22
explained everything that may be needed and the reason for, and difference between options. Very polite, respectful, and great customer service
Edythe Garvey
Edythe Garvey
18:21 18 Feb 22
Jon Morgan was a very professional personable gentleman who worked very quickly and communicated with me every step of the way. When it came to the garbage disposal I wasn't aware that f another way to reset it other than the button, when Jon showed me how with the allen wrench it was great and when I asked him the size so I can purchase one he just gave me that one. I'm so impressed with both techs that have come out to do work for me, even though the first visit didn't resolve the issue with my toilet all things worked out because on further inspection I needed a new toilet. Thanks again, and you've earned a lifelong customer with me, thanks again so much
Laurie Lindsay
Laurie Lindsay
01:32 18 Feb 22
CPI employees were all enormously helpful during my plumbing emergency. They worked hard to fit me into their work schedule to deal with my plumbing problem. I would highly recommend them for any plumbing need you may have.
Frank Krook
Frank Krook
23:16 17 Feb 22
River came out to locate where sewer lines were for our house prior to remodeling. He did a great job and helped me figure out what would be needed for a sewer line to a new ADU at the back of the property.
Elaine Gore
Elaine Gore
21:50 16 Feb 22
Here's the deal. Sometimes choosing who does the work on your house is about the integrity of the business you are working with. I have to say CPI Plumbing has won me over and they will be the only ones I call for plumbing needs or recommend. Our tankless water heater died. I called CPI based off google reviews and they came out that day. I decided to just have the unit replaced. They scheduled the replacement within days. Communication was top notch and they were on time always. There was an issue after the install which they immediately came back and fixed. I had some concerns about the install so I followed up with them. I got a call back from one of the owners. Oly immediately came out and took care of any and all concerns I had. They didn't make me feel bad or stupid, they listened to me and went above and beyond, making sure the job was done right. Look, some might say they should get it right the first time or whatever. Come on, this is a trade job and sometimes the work is complicated and is a learning process for those doing the work (they're not all plumbers with 30 years of experience). When they came back out they took video to make it a training point for all their techs. What more can you ask for? I would say if you've had a negative experience, you didn't call these people first. They would have gone above and beyond to make it right. Like I said, they are a great company, competitively priced, will make sure you're 100 percent satisfied, and are very professional. That's my 2 cents.
Striker 429
Striker 429
01:16 15 Feb 22
Found out our pipes are messed up so the blockage couldn't be cleared today
Th3Dutchman
Th3Dutchman
02:31 12 Feb 22
Very professional crew and repair service!Thank you to Henry!
Rusty Shackelford
Rusty Shackelford
00:32 11 Feb 22
Brenden Tully was professional and did very high quality work. He very willingly answered all my questions while he was working. His interpersonal skills are excellent. He also cleaned all his work areas when he was done and treated my house with respect.
Michael Dillard
Michael Dillard
06:06 09 Feb 22
Great customer service from start to finish..
Jessica Lundy
Jessica Lundy
21:03 08 Feb 22
Josh and Alvin were very professional and worked hard to complete the two jobs we hired them for. Josh did an excellent job of answering any questions asked.
m h
m h
02:54 06 Feb 22
Very professional and knowledgeable, they explained everything in detail so we understood exactly what was going on and what needed to be done. Definitely recommend!
Catherine Junkert
Catherine Junkert
19:14 02 Feb 22
Aaron was super professional and thorough. Appreciate all the time he spent to trouble shoot our problem. Highly recommend- high priced though.
Brie Smith
Brie Smith
06:04 02 Feb 22
Aaron from CPI was on-time, super pleasant and easy to work with, made sure we understood everything that was going on, and did quality work. He and his team went above and beyond to make sure everything was right and that we were satisfied before departing the job site. Thumbs up!
jai i
jai i
04:04 02 Feb 22
Once again Henry for the win! I've said it before, he is ALWAYS spot on! Friendly, informative and brought along an equally impressive maintenance lady with him! CPI is hands down the most responsive plumbing businesses in the area without question.
Tara Lynn
Tara Lynn
05:52 01 Feb 22
We had a very prompt and courteous service from two excellent repairmen. Will call them in the future if we need plumbing work.
Mary Woldstad
Mary Woldstad
01:44 01 Feb 22
Very happy with the service. Jon and Wes arrived a bit early but agreed to delay, at my request, to allow us to be ready for them. Professional and knowledgeable.
John McMahon
John McMahon
23:31 31 Jan 22
Trever was very professional and polite. There is not one thing about his service that wasn't perfect. He replaced my sump pump an installed an extension to the outside drain so the water wasn't coming out right next to the foundation. I will gladly have Trever back for future plumbing issues. Thank you for your great service.
Rebbecca Caro
Rebbecca Caro
04:16 26 Jan 22
The technician that came to my house was very professional, tidy, and was very through when he was trying to find out where the leak was coming from. We were very pleased with our service.
jessica cantu
jessica cantu
01:40 26 Jan 22
Great technicians, knowledgeable and professional They ordered and service our water heater replacement.We used them a second time to replace a 25 year old faucet and repair piping under another sink. Wonderful personnel, professional, clean, respectful, and knowledgeable.
Abbe Rolnick
Abbe Rolnick
00:18 26 Jan 22
Scheduling was easy, technician showed up on time. Brenden was very professional, wore shoe cover inside the house as well as having a mat to put the ladder on. The diagnosis took about an hour and pretty inconclusive but it was a pretty unique problem that my toilet drains slowly with no leak. He utilized all the tools he had and hypothesized it is the vent. Over all it gave me the peace of mind that there’s no leak in the house.
King Lam
King Lam
19:47 24 Jan 22
Very professional, gave list of options for repairs.
Josh Oberholtzer
Josh Oberholtzer
17:59 22 Jan 22
We had a water leak and called CPI Plumbing. We got an appointment for the very next day and our technician Aaron, from the Mount Vernon office was awesome! Not only did he call ahead and was able to come early, but he was super kind, informative, friendly and professional. He not only fixed our water leak, but then we discovered several of our toilets weren’t working. He got us accurate estimates for repair and we opted to have new toilets installed. He did the entire job all in the same day! We were so grateful to have water and flushing toilets repaired so quickly and efficiently. I highly recommend Aaron and CPI plumbing for any plumbing needs!!!
Stephanie Crow
Stephanie Crow
02:56 21 Jan 22
CPI is responsive and provides superior quality service. I always know the work will be done right, the first time.
Cecile Sharp
Cecile Sharp
02:29 21 Jan 22
Great and professional service! Thank you Josh!!
E. R.
E. R.
19:20 20 Jan 22
I could not have asked or received better service from Victor and his team over at CPI plumbing. What I appreciated most was the honesty and professionalism. CPI was able to show me the exact problems with my piping, including photos and full explanations about why I was experiencing drainage problems. They didn’t cut any corners on the job, and it only took them a day to completely overhaul the piping in my 100 year old house. The cost was upfront and at no point did they try to upsell or shill other services. It was incredibly relieving working with them, knowing all of the problems they were going to fix, how they were going to fix them, and the cost of the project all up front. I will be calling them for service for years to come, and wouldn’t hesitate to recommend them to my friends and neighbors.
Nikko Van Wyck
Nikko Van Wyck
23:36 12 Jan 22
Davis was very thorough in checking my furnace and explained everything in detail.
Clay Wilcox
Clay Wilcox
06:36 12 Jan 22
Great and professional service! Thank you Aaron
Shante Taylor
Shante Taylor
23:45 11 Jan 22
I was most grateful for the fast, next day response to my request to hook up a new washing machine for my renter two days before Christmas.My tenants comfort is very important to me, and at this time of year it would be hard to wash clothes and dry them.The two young plumbers who came out were very kind and pleasant. I am sorry I can't remember their names. my belated thanks for a great service.
Bridgit Sims
Bridgit Sims
02:05 11 Jan 22
1/7/21. CPI responded promptly to our emergency call about a leak we discovered in the laundry room.Trevor the CPI plumber was very polite, thorough and profesional. Will use CPI in the future.6/21 Brendon came out to give an estimate to replace furnace and add AC. Very polite and knowledgeable about the products and service we requested.
Dave K.
Dave K.
13:50 08 Jan 22
Stephen replaced my Hot Water Tank. He was very professional throughout. Provided estimates on different tanks and the warranties associated.He showed me other items that had failed and why.I am Very Happy with the service that was provided and that he was able to come a day early.
James Shanahan
James Shanahan
03:47 06 Jan 22
They were at neighbor's house fixing a broken pipe and when I asked if they could replace a kitchen sink they agreed to do the job. It was far more involved than originally thought but they got it accomplished with a lot of work and know how. Very satisfied!
Carl Eklund
Carl Eklund
22:32 05 Jan 22
I called CPI on a Friday and they were able to take care of my issue on Monday, which was much appreciated.Trevor was wonderful, showed up on time, took a photo of the burst pipe with a large hole in it, located under the house and was able to fix in a very timely manner.
Launa Fry
Launa Fry
04:08 05 Jan 22
Trever was prompt and courteous. The repair he did in the well house appears well done and as we had agreed. He also performed a walk thru to verify no additional issues with possible frozen plumbing in the house. At this point all appears good! Thank you!
Mick Brown
Mick Brown
01:54 05 Jan 22
Josh and Tyler were professional, polite, hard working, explained all procedures and options and were a pleasure to work with. CPI kept in communication prior to the appointment via phone and text. Well done!
Nancy Dibble
Nancy Dibble
02:57 04 Jan 22
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Leave your plumbing and HVAC concerns to our experienced team. Contact us today at (360) 219-9468 to request an estimate in Mount Vernon, WA or the surrounding area.

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Serving the Northwest Washington Area

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If you need a plumbing, heating, or air conditioning repair in Skagit County, the experienced and knowledgeable team at CPI Plumbing & Heating can help! However, you may have questions about your situation, and you might be searching for answers before you make the call. Here are a few of the most commonly-asked questions we receive about our business and the answers we can provide you.
Our founder, Steve Olsen, sold the company to three of his long-time employees, one of which was his son. This same leadership group has led the company since 1990.
We offer our services at regular rates: Monday to Friday from 8 a.m. to 6 p.m. However, we also offer after-hours emergency services at our emergency rates: Monday to Friday from 6p.m. to 8 a.m. and Saturday and Sunday all day, because sometimes problems don’t wait until business hours to spring up. Our business office is open from Monday through Friday from 8 a.m. to 5 p.m.
The price of a service call varies on a per-job basis, so you’ll need to call our office to get a specific answer. We do not charge on a per-hour basis, we charge per-job, so you won’t have to worry about surprise overtime fees or other costs that other companies might throw at you.
Yes. When our technician arrives on-site and conducts an inspection of the issue, they’ll give you a written price quote.
We offer a complete range of plumbing, heating, and air conditioning repairs, replacement, installation, and maintenance services for residential and commercial applications. We offer drain cleaning, leak detection and repair, water heater repairs and replacements, backflow certification, re-piping services, video pipe inspections, air conditioner and heater inspections and diagnoses, system replacement, heat pump repair, blower motor repair, and much more.
We’re so confident you’ll be completely satisfied with the services you receive that we back up all our repair work with a 90-day warranty and all our replacement and installation work with a full one-year warranty! If anything goes wrong with our solution during that time, we’ll come fix the issue again at no cost to you.
No, you don’t. As long as we can access the systems we need, we can perform all of the necessary work without you needing to be present! We are both licensed and fully-insured with a $1 million per claim liability policy, and we have an A rating with the Better Business Bureau in order to give you the confidence of knowing the job will be done right if you can’t be home while we’re there.

The Best Plumbing Services in Mount Vernon

Clogs, backed-up drains, and leaking pipes can happen when you least expect it—and our team is here to help you get your plumbing problems under control using safe and proven methods.

No matter the size of your plumbing problem or what’s causing it, we are prepared to provide you with the quality service you need.

Contact us for help with the following:

HVAC Trouble? Contact Our Mount Vernon AC and Heating Experts Today

Your HVAC system is an essential part of your home and business. An inefficient furnace or a broken air conditioner can result in high utility bills and poor indoor air quality.

If you are struggling with recurring HVAC problems, or you’re looking to install new heating or cooling equipment, call our experts for immediate service. We will assess your indoor comfort needs and have your HVAC system running efficiently in no time.

Let us help you with the following:

From Bellingham to Everett, and everywhere in between, you can expect to receive fast turnarounds and quality service no matter where you are in northwest Washington.

Whether you need to fix a leaking pipe, replace your furnace, or install new air conditioning equipment, you can count on our experts to arrive on time and have your plumbing or HVAC problem resolved as quickly as possible.

The Right Technicians, The Right Company

CPI Plumbing & Heating proudly serves the communities of Skagit, Island, Whatcom, and North Snohomish Counties from our office in Mount Vernon.

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    Local Reviews

    CPI Plumbing & Heating Rated 4.8 out of 5 stars based on 918 customer reviews

    Map of Mount Vernon, WA

    great service and fair quote




    Review of CPI Plumbing & Heating


    Map of Mount Vernon, WA

    Good experience!




    Review of CPI Plumbing & Heating

    Trevor was very helpful in assessing the situation, providing updates, and fixing our plumbing issue.


    Map of Coupeville, WA

    Great service




    Review of CPI Plumbing & Heating


    Map of La Conner, WA

    Fast, Efficient, Professional Service




    Review of CPI Plumbing & Heating

    The technicians arrived right on time, quickly analyzed the problem, explained the situation clearly, gave me a price. They handled a difficult installation like true professionals, and walked me through the invoice. I highly recommend this company.


    Map of Coupeville, WA

    very polite and well informed




    Review of CPI Plumbing & Heating


    River G.

    River G.

    Checked customer complaint about a leaking wash machine valve. The customer had a wash machine valve that was leaking when he turned it on and he needed it replaced. The customer kept the valve in the off position to keep it from leaking. Presented customer pricing to replace the wash machine valve with a new one. After pricing was approved I collected a half down deposit. The work will be performed once the required parts are acquired. CPI is not responsible for damage caused by the leak. Thank you for choosing CPI Plumbing and Heating.

    Near Cornet Bay Rd, Oak Harbor, WA 98277
    Brannigan B.

    Brannigan B.

    Mounted new hose bib and in the crawl space cut a section of copper pipe out which allowed me to solder some pex adaptors on the copper and the pipe in the hose bib with 1/2” pex pipe. Slowly turned water back on and tested for leaks.

    Near Chinook Dr, Burlington, WA 98233
    Oly O.

    Oly O.

    Arrived on site. Confirmed customer complaint of error code “788-00 check dip switch setting” and water not producing hot water. Customer also complained of power outage from night prior. Removed front cover and moved dip switch #1 from natural gas (off) to propane (on). Tested unit. Water heater performing as designed. Checked all other control settings at customers request. At this point I am not sure why setting was not in proper position. Proper position had been confirmed on original installation and had been running since March. Water heater is cycling and performing as it should. No charge for today’s visit. Thank you for choosing CPI Plumbing and Heating Inc.

    Near Beths Ln, Sedro-Woolley, WA 98284
    Davis C.

    Davis C.

    Arrived onsite to customer complaint of a leaking 40 gallon natural gas water heater. Provided pricing for replacement of tank with either a 6 year warranty or a 10 year warranty, customer chose the 10 year warranty option, explained that he would need to drain and flush the water heater once per year to keep this warranty intact. Performed work, bled air from water heater while filling. Lit pilot, and checked for gas leaks and water leaks, none were present. Thank you for choosing CPI Plumbing and Heating Inc.

    Near Harvest Edge Pl, Burlington, WA 98233
    Stephen O.

    Stephen O.

    Filter cabinet sits on top of furnace and measures 21” Deep 17.5” wide and 7.5” tall Transition above that is16.5 width 21.125 deep and approximately 8.5 tall Transition above that is FOR, FOB and FOF 21.125” Deep 7” tall and transitions down to 13” width from 16.5”. Main plenum is 13” width 21.125” depth and approximately 11.5” tall Arrived onsite to customer having no heat and furnace flashing a diagnostic code for open limit. Gave customer pricing for diagnostic as well as replacement. Customer decided to go down diagnostic path. Took voltage reading across main limit switch and measured 16VAC Turned power off to unit and measured resistance across is and measured OL, indicating no continuity. At this point jumpered r and g at thermostat and blower motor attempted to kick on but did not run. Pulled control board and found multiple spots where board had been scorched and had damage. Talked with customer about potential repairs as well as replacemen

    Near Champions Dr, Arlington, WA 98223

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