How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%92+50.2Reliability 24%91+22.1Value 14%100+14.1Replies to reviews 7%92+6.5Craft & service penalty96−0.4Experts Score= 92Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.92SCORECM Heating
Everett, WA · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #28Position by Experts Score among all companies we track in this category. of 54 leak detection services · 4.9★ from 7,953 Google reviews
Report card
Percentile vs other leak detection services (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: reliability.
Reviews for your job
Customers hired CM Heating for 8 kinds of job.
CM Heating for HVAC system maintenance
Clear ✕All 744 Google reviews tagged “HVAC system maintenance” · showing 40
Hired CM Heating for a routine furnace tune-up. The tech first told me my heat exchanger was cracked and there was rust. After I called their office, he changed it to: no crack, just a little rust — and the rust isn't a problem. But his meter was showing CO, he couldn't say why, and his answer was to replace the…
CM Heating techs Michael M. and Joseph M. arrived on time. They figured out the best way to reroute the PVC line so the water could drain without a condensation pump. The original setup with the condensation pump created an odd sound whenever the pump stopped running. Michael felt that there was an issue within the…
A plumber is now required to service tankless water-heaters. So the plumber came to clean my tankless, which has never had problems in the 13 years I've had it. Now water is dripping from it and I will have a lot of repair work to do on the floor. Now I need a plumber to fix what the first plumber broke. They used…
CM is awesome!
They did the annual maintenance service. All of my questions were answered and the system checked out great. Happy with the service. The guys were as usual very courteous.
Very nice but didn't change the filter as it was not standard...but never told me they didn't change it. Only after I called did they say it would cost extra to change a non-standard filter so I purchased and they're coming back to change it. Seems odd.
Already did survey, wanted to let management know Tyler is the Best. Great understanding of the task at hand. quick to point out issues. Easy to work with and a true professional. Job 1 attitude.
Anderson was on time, friendly, respectful of my property, and very knowledgeable. He didn’t push any other services or products and left the decision solely in my hands.
Very efficient and very fast.
Always a good experience with this company. Luke did a great job and was very pleasant to have in our home. Another year with CM Heating - this time Doug Jansen. Same excellent service as in prior years - thank you another year - another maintenance appointment for our havac system. And another excellent job by…
Been using CM heating for 17yrs. I recommend them. Great people.
I've been with Cm Heading for a long time will not go anywhere else. They have taken care of my family's needs. They make everything right all the time.
Professional personnel Charlie is great, he discovered leaking heater and pushed calls for sonner appointment
C&M Heating and Cooling just completed another annual check-up of our Heat Pump system. James Penney, a friendly professional, completed a thorough examination, spending more than two hours with detailed attention. We have been very satisfied with C&M since they installed our heat pump in 2022. James Penney is…
Very detailed and thorough. And also a nice guy.
Dan was very professional. He kept us informed during the whole process and summarize the service at the end. Very impressed.
Dan our TECH was on time, very knowledgeable with every aspect and very professional. CM heating has always been top notch and we will continue to stay with them for our service and future install.
Anderson Carter is stellar
Service was great! Problem solved in minutes.
Emmauel came to our house on time a d ready to work. He was very informed and did a thorough job.
Not so good service, disappointed
Ray was a pleasure to deal with. He did a very thorough job and gave us some new information about our system. We've always been happy in our dealings with CM Heating.
I base the servicing of my air-conditioning and heating On the reviews. Emmanuel came up and was so professional. Everything went as good as it could go. I even tried to hire the kid.
Fast efficient and knowledgeable
Could not have been a more positive visit to get a recommendation for furnace replacement.
Nate was very friendly and knowledgeable. He explained our HVAC issues very well, so we could make informed decisions about the repair options we have.
Good service, on time and very knowledgeable.
Very knowledgeable, very honest and efficient.
Anderson was great!
June 26, 2026. CM technician Caleb arrived at the end of our 4 hour window, serviced both the the gas heater and air conditioner in an hour. He was excellent in moving from one to the other, explaining and answering my questions. My only complaint is about the 4 hour window. We sat from noon to 2:30 waiting for a…
Great experiance across the board from start to finish. They have the nicest technicians and are always courteous, on time and respectful!
You will not find a more professional HVAC/Plumbing/Electrical company anywhere in the Seattle area! These technicians are very highly trained and the services they provide are consistently excellent. We've used them for years. My company has also utilized their services for many years. They are not the least…
Great service guy, didn't pressure for any extra work.
Love CM heating - from their customer service to their friendly & professional techs to their support of local wish kids! Highly recommend this company.
On time, clear communication, glad to be in the club.
Hagen was courteous and professional. He went over and above what we expected.
We used CM Heating to service our furnace and air conditioner this year. As usual, they were prompt, very thorough and nice. I told them my concerns and they checked everything out!. Our house is nice and cool and we couldn’t be happier!!
Very friendly, and patiently explained everything to me. Quick was able to get in and Out in just a couple of hours and kept me updated on his progress the whole time. C&M is a great company I can’t say enough good stuff about them, and they hire just top notch people to represent their company. I put the call in…
Alexander was awesome!! Found the issue with our system , explained the problem and the solution. He solved the issue and did the needed repairs. We love CM HEATING!!
First maintenance after installation of a new furnace and heat pump installed by CM Heating two years ago. Graham took care to explain everything. Great customer service!
Price
Bar = middle half of what customers paid · gold mark = category median.
Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Jobs customers hired them for
| Job | Reviews | Category typical |
|---|---|---|
| Heating system maintenance | 861 | $78–$251 |
| HVAC system maintenance | 733 | $39–$264 |
| Heating system installation | 639 | $1.1k–$2.1k |
| Heating system repair | 553 | $114–$529 |
| Install AC | 413 | $1.6k–$2.9k |
| HVAC system repair | 354 | $114–$580 |
| A/C system maintenance | 343 | $37–$295 |
| Installation | 253 | $578–$2.1k |
