Furnace repair service · Everett, WA · reviewed since 2013
iHow 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.92SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#28 of 54 leak detection servicesiPosition by Experts Score among all companies we track in this category. · better than 49%
4.9★★★★★7,953 Google reviews · 24 photos
96%five-star reviews
4.91★last 12 monthsiAverage stars on reviews from the last 12 months only.
1.3%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
65%reviews answered by the owner
$292typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
Reviewers of CM Heating frequently praise the company for punctual arrivals, professional communication, and efficient handling of furnace repairs, HVAC installations, and water heater services. While many customers highlight the thoroughness of the technicians and the clarity provided during diagnostics, some low-star reviews cite unexpected pricing increases, perceived upselling of unnecessary parts, and instances where equipment was damaged during routine maintenance or installation.
Google rating: 4.9 out of 5 from 7,953 reviews (96% five-star).
Reviews on this page: 7,953 Google reviews (6,285 with written comments, 86 with photos).
Owner responses: the business replied to 65% of reviews.
Most recent review: October 23, 2026.
Service: Leak Detection Service serving Everett, Washington.
Data from Google, last updated November 8, 2026.
Score profile vs other leak detection services
Score per factor (100 = best)iEach 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.
CM HeatingLeak Detection Services median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.CM Heating: 92/100 on this factor. Category median: 94.A
92
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.CM Heating: 91/100 on this factor. Category median: 92.A
91
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.CM Heating: 96/100 on this factor. Category median: 96.A
96
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.CM Heating: 100/100 on this factor. Category median: 100.A
100
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.CM Heating: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.CM Heating: 92/100 on this factor. Category median: 94.A
92
Bar = this company · dark tick = category median.
Star ratings
7,953 Google reviews we collected
4.9of 5
5 stars7,62696%
4 stars1993%
3 stars320%
2 stars200%
1 star761%
Praise vs complaints
Phrases our text analysis found in 2,500 written reviews
99%praise
Praise4,88599%
Complaints531%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
98%fair
Great price28427%
Reasonable66463%
Overpriced242%
Not sure798%
$292-32% vs typical leak detection services
Middle half of what 785 customers paid ($161–$1.1k) · gold mark = category median.
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude1,56232%
Quality & results1,02521%
Speed & response86618%
Communication64313%
Would recommend4038%
Price & value2675%
Honesty & trust1723%
What customers talk about
We read 2,500 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“We were very blessed that CM sent such a competent and professional advisor to scope the project.”
“Asking for dispatch when you don’t do your job of great quality is not only unprofessional but also shows your poor customer relation management.”
“CM delivered a lightning-fast, high-quality install with top-notch customer service.”
“Most people had complaints about their products not working AFTER yearly maintenance.”
“They wore booties, drop cloth on our floors, were so quick and efficient with their installation and did a bit of troubleshooting during the end.”
“Update: I see CM Heating posted a delayed response to my review.”
“They communicated everything they were doing and any changes that needed to be made.”
“I would definitely recommend Dan and the CM team for your AC needs.”
“I do not recommend based on my personal experience.”
“They're not the lowest price but they're worth every penny.”
“First of all, they imply that I did not reach out to them regarding this gross overcharge.”
“Thank goodness for CM heating, honesty, great work, and fast completed job, is so refreshing in todays world.”
“Edit: I fixed my problem myself for $60, they are liars that say a fix is impossible!”
People customers mention
Dan33 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired CM Heating for 8 kinds of job. Pick one to see what they paid and said.
GGrayson3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★
I called to explore how expensive it would be to upgrade our heating and maybe add AC. I never expected that we'd have a brand-new HVAC system running smoothly the very next day.
CM delivered a lightning-fast, high-quality install with top-notch customer service. The process was completely painless, even despite…
Paid $2,000+Reasonable priceElectrical wiring installationHeating system installationInstall AC
CCatheLocal Guide · 14 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★
We had a bit of a condensation issue, and while not an out and out emergency, we got a next day appointment. Alexander Carlson was our technician. What an extremely personable and professional young man!! He diagnosed and fixed the problem very quickly, and gave us recommendations for easy DIY maintenance to keep the issue from recurring.
CC5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited 3 months ago★
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…
Paid $1–200Reasonable priceHVAC system maintenance
CCarolineLocal Guide · 13 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 months ago★★★★★
We had a furnace and heat pump installed. Very efficient, professional. They did a quality work install and finish and cleaned everything after they were done.
Paid $2,000+Reasonable priceInstallationHeating system installation
SSusan8 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited 3 months ago★★★★★
I can always count on CM Heating to come to my rescue right away. The team members are always friendly and informative.
Paid $2,000+Great priceHeating system repairCleaningElectrical inspections
BBrian1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 months ago★★★★★
Emmanuel Maldonado, clean, courteous, respectful and thorough. Exceeded expectations.
I have always used CM Heating for my HVAC needs and have been happy with them. However, I recently had them install a mini split AC in my master bedroom and disaster struck! The install team ended up drilling a 3" hole through the lintel of my garage which is the support beam that holds the garage up as well as my master bedroom above it! I had at least four CM Heating installers mentioning they were going through drill bits so fast they had to run to the store to get more! This is concerning as anyone who knows the basics of home construction would recognize they were drilling through a major support beam and stop. I had a structural engineer assess the damage and the beam needs to be replaced.
I would be very hesitant to recommend CM Heating going forward. It is clear their installers are clueless as to basic home construction. I'm also doubtful they are properly insured as they have yet to correct the matter. I am in the process of hiring a lawyer to correct the issue.
Be very cautious if you end up going with CM Heating for your HVAC needs.
I am happy to report that CM has reached out to correct the issue.
Price: $2,000+
Services: Installation
Response from the owner · a month ago
Thank you for sharing your experience, Ryan. We’re truly sorry to hear that your recent installation did not meet the high standards we strive for. We understand how distressing it must be to deal with a situation like this, especially involving structural concerns in your home. Your feedback is incredibly important to us, and we take it seriously. A service manager will be reaching out to discuss this matter further and work towards a resolution. Our goal is always 100% satisfaction, and we’re committed to making this right. Thank you for your patience as we address your concerns.
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Ally Turner6 reviewsiTotal number of Google reviews Ally has written across all businesses on Google Maps, not just this one.
We just had Samir, Mark, Michael and John out to replace the water heater and install a GFCI outlet, they made sure to take care of us the same way the HVAC team did back in January. They wore booties, drop cloth on our floors, were so quick and efficient with their installation and did a bit of troubleshooting during the end. They communicated everything they were doing and any changes that needed to be made. The office communication from Brittny has been outstanding. We had our furnace venting and water heater venting replaced by Hagen and Aaron back in January 2026. They were also fantastic, quick, efficient, made sure to drop cloth our floors and wear booties in our home. The amount of effort and care this company puts into making sure the customer is happy is incredible. Something very tough to come by these days. CM has been honest, upfront and reliable. Your staff is remarkable and goes above and beyond. Keep these people around! -Two incredibly happy customers 😊
Price assessment: Reasonable price
Price: $2,000+
Services: Water heater installation, HVAC system repair
Response from the owner · a month ago
Thank you so much for sharing your wonderful experience, Ally! We’re thrilled to hear how well Samir, Mark, Michael, and John took care of your water heater and GFCI outlet installation, just as Hagen and Aaron did before. It’s fantastic to know that our team's attention to detail and communication made such a positive impact on your experience. We truly appreciate your kind words about our staff and the effort we put into ensuring your happiness. Your support means the world to us, and we look forward to serving you again in the future! 😊
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Debajyoti SaikiaLocal Guide · 19 reviewsiTotal number of Google reviews Debajyoti has written across all businesses on Google Maps, not just this one.
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 heat exchanger. He was at my house about 2 hours, most of it sitting in his truck; when I asked, he said he was "charging something."
They then sent a senior tech, who got similar CO readings and also couldn't explain the cause. His numbers: $2,600–$2,800 labor plus $3,000–$5,000 in parts for the heat exchanger — or better yet, a whole new furnace at $8,000–$13,000 installed.
So I paid for a servicing and got a sales pitch with no diagnosis. Nobody could tell me why the CO reading exists, and the "crack" that started the whole scare was retracted the same day. I'm disputing the charge and getting an independent second opinion.
Did they tune up, did they do the servicing? no. Showed me CO level.
They both told me that they are required to shut it off per the law as there is high CO level. They left without turning off. When I asked did they turn it off, reply was, “if you want, I’ll turn it off”.
I have several CO sensors am apparently those are useless per them.
Services: HVAC system maintenance, Heating system maintenance
Response from the owner · a month ago
Thank you for sharing your experience, Debajyoti. We’re genuinely sorry to hear that your furnace tune-up did not meet your expectations and that you felt uncertain about the situation with the CO readings. Your safety and peace of mind are our top priorities, and we understand how concerning this must be for you.
We appreciate your feedback, and we take your concerns very seriously. A service manager will reach out to discuss your experience further and ensure we address your concerns. Our goal is 100% satisfaction, and we are committed to making this right for you.
Thank you again for bringing this to our attention, and we hope to resolve this for you soon.
G
Grayson Sinclair3 reviewsiTotal number of Google reviews Grayson has written across all businesses on Google Maps, not just this one.
I called to explore how expensive it would be to upgrade our heating and maybe add AC. I never expected that we'd have a brand-new HVAC system running smoothly the very next day.
CM delivered a lightning-fast, high-quality install with top-notch customer service. The process was completely painless, even despite the unforeseen complication of the old furnace being partially buried in the basement's concrete slab. The team tackled this surprise without issue at no additional cost.
Huge shout-out to Samir Khoury. We were very blessed that CM sent such a competent and professional advisor to scope the project. He made the planning easy and fun, found us a package with everything we wanted and nothing we didn't, and stayed in touch throughout the install to make sure we loved the result. His contributions were truly above and beyond standard.
Thank you for sharing your wonderful experience, Grayson! We’re thrilled to hear that our team was able to provide such a quick and high-quality installation of your new HVAC system. It’s fantastic that Samir made the planning process enjoyable and ensured everything went smoothly, even with the unexpected challenges. Your kind words mean a lot to us, and we’ll be sure to pass along your praise to Samir and the rest of the team. We look forward to keeping your home comfortable for many seasons to come!
R
Richard W3 reviewsiTotal number of Google reviews Richard has written across all businesses on Google Maps, not just this one.
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 drain line causing water to backfill into the pump, causing noise after it stopped running. I felt that Michael and Dan went the extra mile to help remedy the noise issue and did a fantastic job rerouting the PVC line. We ended up with a clean look, eliminating the PVC line in front of the coil panel, allowing for easy access. No more condensation pump, no more noise, and a clean look. Job well done!
PS: I forgot to mention that Anderson C. arrived on time; he performed the yearly maintenance and did a fantastic job as well! Great teamwork!
To CM Heating Staff and Techs, Thank You All!
Services: HVAC system repair, HVAC system maintenance, Cleaning
Response from the owner · 2 months ago
Thank you so much for sharing your wonderful experience, Richard! We’re thrilled to hear that Michael, Joseph, and Anderson provided such exceptional service and teamwork. It’s fantastic that they were able to resolve the noise issue and create a clean, accessible setup for you. Your appreciation means the world to our team, and we’ll be sure to pass along your kind words. Thank you for trusting us with your home comfort!
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Cathe ReedLocal Guide · 14 reviewsiTotal number of Google reviews Cathe has written across all businesses on Google Maps, not just this one.
We had a bit of a condensation issue, and while not an out and out emergency, we got a next day appointment. Alexander Carlson was our technician. What an extremely personable and professional young man!! He diagnosed and fixed the problem very quickly, and gave us recommendations for easy DIY maintenance to keep the issue from recurring.
Price assessment: Great price
Price: $1–200
Services: Ductless heating & A/C services
Response from the owner · 2 months ago
Thank you for sharing your experience, Cathe! We’re thrilled to hear that Alexander provided such personable and professional service while addressing your condensation issue. It’s great to know he could quickly diagnose and fix the problem, along with offering helpful maintenance tips. Your kind words mean a lot to us, and we look forward to continuing to serve you in the future!
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Lyle Deobald4 reviewsiTotal number of Google reviews Lyle has written across all businesses on Google Maps, not just this one.
CM heating completed a high-efficiency furnace replacement and installation of a new heat pump for us in July 2026. Planning, permits and turn-key installation was completed within only about 2 weeks from when we called. CM beat out two other companies in the bid; however, the final decision to move forward with CM was based more on technical aspects of the CM proposal which included specifications of proposed equipment, quiet operation, and right-sizing the system to our space. We have had no problems with the system (in air conditioning mode) in the first month. We paid the amount of the original bid without unexpected up charges.
The smooth success of our installation may be attributed to clear communication and careful planning by our project manager, S. Khoury. He took great care in getting the technical details correct and communicating with us our needs. He even helped us get a significant rebate from our gas company for the heat-pump installation. I would recommend CM for your HVAC installations.
Price assessment: Reasonable price
Price: $2,000+
Services: Heating system installation
Response from the owner · 2 months ago
Thank you for sharing your wonderful experience, Lyle! We’re thrilled to hear that our team, especially S. Khoury, was able to provide you with clear communication and a successful installation process for your new furnace and heat pump. It’s fantastic that you found our proposal to be the best fit for your needs and that you’re enjoying the benefits of your new system without any surprises. Your recommendation means the world to us, and we look forward to serving you for years to come!
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Ankit TakallapalyLocal Guide · 47 reviewsiTotal number of Google reviews Ankit has written across all businesses on Google Maps, not just this one.
UPDATE: This was the quickest 1⭐️ to 5⭐️ switch! Aaron reached out immediately to understand the issue and provide a resolution wherein Charles was able to swing by and fix the issue within hours. Aaron also acknowledged that they would ensure that something like this would be resolved much more seamlessly going forward.
Disappointing service. They came in for an annual maintenance of the HVAC and 45 days later there is an overflow from the drain line. The unit is only four years old and had no issues prior to the maintenance visit.
When I called to check on this -
1. They stated that it would be an additional service fee for someone to come look since it was over 60 days from the date of service (which it wasn’t) then they said it is actually 30 days from the date of service and they misspoke.
2. When I asked them about how would a drain line clog in 45 days after service, assuming it was serviced properly, they had no answers other asking me to pay up $170 again (a $50 discount was being offered) when i payed $700 45 days ago.
Price assessment: Not sure
Price: $600–800
Services: HVAC system repair
Response from the owner · 3 months ago
Thank you for sharing your experience, Ankit. We’re truly sorry to hear that your service fell short of expectations and that you’re dealing with this frustrating issue. We understand how concerning it is to have an overflow from the drain line after maintenance, especially with a relatively new unit.
We take your feedback seriously, and a service manager will reach out to make things right. Our goal is 100% satisfaction, and we want to ensure that your concerns are addressed. Thank you for your patience as we work to resolve this situation.
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C C5 reviewsiTotal number of Google reviews C has written across all businesses on Google Maps, not just this one.
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 to have regular furnace guys service our tankless water heater and they obviously did a better job than this plumber.
I will not be using CM for anything water related after this.
Price assessment: Reasonable price
Price: $1–200
Services: HVAC system maintenance
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Caroline BoisvertLocal Guide · 13 reviewsiTotal number of Google reviews Caroline has written across all businesses on Google Maps, not just this one.
We had a furnace and heat pump installed. Very efficient, professional. They did a quality work install and finish and cleaned everything after they were done.
Price assessment: Reasonable price
Price: $2,000+
Services: Installation, Heating system installation
Response from the owner · 3 months ago
Thank you for sharing your wonderful experience, Caroline! We’re thrilled to hear that our team provided efficient and professional service during your furnace and heat pump installation. It’s great to know you appreciated the quality of their work and the clean-up afterward. Your kind words mean so much to us, and we look forward to keeping your home comfortable for years to come!
