Experts Reviews · Company report
CM Heating logoHow 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

CM 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.

SatisfactionSatisfaction · 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 is better than 92% of leak detection services.A
92
ReliabilityReliability · 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 is better than 91% of leak detection services.A
91
Craft & serviceCraft & service · 0% of the scoreGoogle 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 is better than 96% of leak detection services.A
96
ValueValue · 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 is better than 100% of leak detection services.A
100
MomentumMomentum · 0% of the scorePenalises 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 is better than 100% of leak detection services.A
100
Replies to reviewsReplies 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 is better than 92% of leak detection services.A
92

Reviews for your job

Customers hired CM Heating for 8 kinds of job.

CM Heating for heating system maintenance

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.865
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).4.94
Usually paidThe price range customers picked most often for this job.$200–300
Category typicalWhat the middle half of customers paid for this job across all companies in the category.$78–$251
Rank for this jobPosition of this company in the Job match ranking for this job among the companies we track.Its Job match: 94/100.How Job match is calculatedBuilt only from reviews Google tagged “Heating system maintenance”:Stars on this job 55%Number of such jobs 25%Overall Experts Score 20%Stars are pulled toward the category average when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.#1 / 9
Said fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.98%

All 865 Google reviews tagged “Heating system maintenance” · showing 20

DebajyotiLocal Guide · 19 reviewsTotal 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★

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…

HVAC system maintenanceHeating system maintenance
Susan8 reviewsTotal 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
Leonard6 reviewsTotal 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★★★★★

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.

Paid $400–600Reasonable priceHeating system maintenanceHVAC system maintenanceInstall thermostat+ Professionalism
a383377 reviewsTotal 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★★★★★

Been using CM heating for 17yrs. I recommend them. Great people.

Reasonable priceA/C system maintenanceHeating system maintenance+ Responsiveness+ Punctuality+ Quality
David11 reviewsTotal 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'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.

Paid $1,000+Reasonable priceA/C system maintenanceHeating system maintenanceHVAC system maintenance+ Value
StevenLocal Guide · 26 reviewsTotal 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★★★★★

His evaluation of our system and his work doing it were topnotch.

Paid $400–500Reasonable priceHeating system maintenance+ Professionalism
Chris8 reviewsTotal 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★★★★★

Dan was very professional. He kept us informed during the whole process and summarize the service at the end. Very impressed.

Paid $200–400Great priceHVAC system maintenanceA/C preventive maintenanceHeating system maintenance
DianeLocal Guide · 17 reviewsTotal 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 4 months ago★★★★★

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.

Paid $200–400Reasonable priceHVAC system maintenanceA/C system maintenanceCleaning
Tom1 reviewTotal 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. · 4 months ago★★★★★

On time. Very professional. Completed annual maintenance check in a timely manner.

Paid $1–200Reasonable priceHeating system maintenance
Jan1 reviewTotal 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. · 4 months ago★★★★★

We bought the maintenance program last year. The service was great today.

Paid $200–400Reasonable priceHeating system maintenance
Anne5 reviewsTotal 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. · 4 months ago★★★★★

Dan and Peter were extremely helpful and knowledgeable. I would 100% recommend to anyone!

Paid $800–1,000Great priceHeating system repairHeating system maintenance
ShawnLocal Guide · 13 reviewsTotal 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. · 4 months ago★★★★★

Charles was great! Answered all our questions, was very respectful of our property, appreciated our dog and provided excellent service. Thank you for the service!

Paid $1–200Reasonable priceHeating system maintenance
MisterLocal Guide · 62 reviewsTotal 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. · 4 months ago★★★★★

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…

Paid $2,000+Reasonable priceHVAC system maintenanceA/C system maintenanceInstallation
RayLocal Guide · 73 reviewsTotal 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 4 months ago★★★★★

great service, qualified technicians and prompt services. Saul is very knowledgeable and honest.

Paid $200–400Reasonable priceA/C system maintenanceHeating system maintenance
RoseLocal Guide · 19 reviewsTotal 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. · 4 months ago★★★★★

Brandon was friendly, professional and efficient.

Reasonable priceHeating system maintenance
Ronald6 reviewsTotal 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 4 months ago★★★★★

Simply outstanding, professional service by Nikko Cossins who is an extremely well trained technician who performed a masterful maintenance service. I would recommend this company to anyone needing HVAC service. Thank you for another outstanding job.

Great priceHVAC system maintenanceHeating system maintenance
Cathy8 reviewsTotal 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 4 months ago★★★★★

Dan came out to my house to check on my AC unit that wasn't working. No cold air on a 90 degree day. He came that same day, assessed the issue, and let me know my options going forward. He was very professional and very nice to deal with. Great job, Dan!

Paid $200–300Great priceHeating system maintenance
Brandis11 reviewsTotal 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 4 months ago★★★★★

Nicko is always reliable. Excellent work.

Paid $1,000+Reasonable priceCleaningInstallationHeating system maintenance
Starette6 reviewsTotal 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 4 months ago★★★★★

06/15/26 Emmanuel did n incredible job, friendly, efficient and we are claiming him as our tech from now on.

Paid $1–200Great priceHVAC system maintenanceHeating system maintenance
Shannon4 reviewsTotal 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 4 months ago★★★★★

We are on the pre-paid service plan with CM Heating. I love it. I never have to remember to schedule our yearly furnace and HVAC repair. The office calls with a reminder. Today Nikkoo Cossins stopped by to make sure that everything was in order. Glad to know that our air conditioning is ready to go before the…

HVAC system maintenanceHeating system maintenance

Show more heating system maintenance reviews (845 more) →

Price

$292-32% vs typical leak detection services

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.

Great price 27%Reasonable 63%Overpriced 2%Not sure 8%

Jobs customers hired them for

JobReviewsCategory typical
Heating system maintenance861$78–$251
HVAC system maintenance733$39–$264
Heating system installation639$1.1k–$2.1k
Heating system repair553$114–$529
Install AC413$1.6k–$2.9k
HVAC system repair354$114–$580
A/C system maintenance343$37–$295
Installation253$578–$2.1k

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