Analyzing 9,108,2729.1M ReviewsFor 25,80125.8K Experts

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

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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 install AC

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.413
★ 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.$1,000+
Category typicalWhat the middle half of customers paid for this job across all companies in the category.$1.6k–$2.9k
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 “Install AC”: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 / 8
Said fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.100%

All 413 Google reviews tagged “Install AC” · showing 20

Grayson3 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★★★★★

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
Annemarie10 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★★★★★

The workers were professional, friendly, and competent.

Paid $2,000+Reasonable priceInstall AC
Brooke3 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★★★★★

Great service! Professional, prompt, good communication.

Heating system installationHVAC duct & vent installationInstall AC
Jeff2 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 guy overall. Extreme attention to detail. I wish all customer service representatives were like him.

Heating system installationInstall AC
DeeLocal Guide · 16 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★★★★★

CM installed my heat pump a few years ago and have taken great care of me ever since. Had an emergency and you can call day or night and they send someone right out. Love this company and the crew is always so friendly and professional!

A/C system maintenanceInstall ACHeating system installation+ Responsiveness+ Punctuality+ Quality
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
Teresa6 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★★★★★

Joe was super knowledgeable, explained what I needed, went over installation and the process in detail.

Paid $2,000+Great priceHeating system installationInstall ACHVAC duct & vent cleaning
Greg8 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★★★★★

Amber Maddalena started the process walking through CM’s warranty on mini-split installation in our condo. They ended up being the lowest price and their 12 year parts and labor warranty was the best of any company we quoted (we got 4 quotes). Amber worked with me through the process (we were the first mini-split…

Customer photo from Greg's review
Paid $2,000+Great priceInstall ACDuctless heating & A/C services
RoisinLocal Guide · 28 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★★★★★

CM Heating are pros at what they do! They do an excellent job scoping the work (needed to add a single ductless head to my existing AC system), planning out two viable scenarios in case one install plan didn’t go as planned. We ended up with plan b. Amazing communications, consulting experience and install…

Install AC
Dave4 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★★★★★

Quick friendly and very accomodating, I would highly recomend them to anyone needing heating or cooling work done.

Great priceInstallationHeating system installationInstall AC
richard3 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★★★★★

Very Good Company over All.

Install AC+ Responsiveness+ Punctuality+ Quality
Al4 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 6 months ago★★★★★

An absolute delight!! Thank you!!

Install AC
DanLocal Guide · 10 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 6 months ago★★★★★

Update: it’s 2026 and I’m very happy with the new water heater I had CM Heating install. I’m happy with the service, the quality of the water heater, the warranty, and the pricing. Update: it’s 2025 and I’m still happy with my service. Brandon was an excellent tech and brought me up to speed on the status of my…

Paid $1,000+Reasonable priceHVAC duct & vent installationInstall AC+ Responsiveness+ Punctuality+ Quality
Jonathan10 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 6 months ago★★★★★

On time, works perfectly

Paid $200–300Install ACInstall thermostat+ Responsiveness+ Punctuality+ Professionalism
DavidLocal Guide · 37 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. · 6 months ago★★★★★

Davis did a great job! Was expecting possibly a high pressure sale approach but it wasn’t. Presented the options and price and answered all our questions. Haven’t decided for sure but thought the quote to install a mini split was reasonable.

Paid $1,000+Reasonable priceInstall AC
Judy4 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 6 months ago★★★★★

Very prompt, efficient and knowledgeable in all aspects of our service call.

Reasonable priceInstallationHeating system installationGeneral repairs+ Responsiveness+ Punctuality+ Quality
ChesterLocal Guide · 34 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 6 months ago★★★★★

5 stars Mack is the man!! Got my AC working perfectly.

Paid $1,000+Reasonable priceHeating system installationInstall AC
Rex5 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. · 7 months ago★★★★★

Awesome service! Friendly, direct, and very knowledgeable.

Not sureInstall AC
Kevin8 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. · 7 months ago★★★★★

I am so happy after using CM Heating to replace our furnace & A/C! From the beginning they have exceeded my expectations. Chester during the initial visit & estimate was friendly, thorough, paid attention to our needs & concerns, and answered all of our questions. After scheduling the install with a quick…

Paid $1,000+Great priceHeating system installationInstall AC
Gordon7 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. · 7 months ago★★★★★

Entire process from start to finish was professional, friendly, low pressure and technically sound. Installation team arrived on time and were finished by mid afternoon. They explained differences between my old gas system operation and the new heat pump system. My biggest worry switching to heat pump was that air…

Paid $1,000+Reasonable priceHeating system installationInstall thermostatInstall AC

Show more install AC reviews (393 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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