Analyzing 6,529,9706.5M ReviewsFor 18,09818.1K Experts

Experts Reviews · Company report
Promax Service Group 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 59%100+58.7Reliability 26%99+25.8Value 15%100+15.2Experts Score= 100Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.100SCORE

Promax Service Group

Sunnyvale, CA · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #6Position by Experts Score among all companies we track in this category. of 113 HVAC contractors · 5.0★ from 99 Google reviews

📞 Call (669) 777-1997Request a call backWebsite ↗

Report card

Percentile vs other HVAC contractors (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: satisfaction and value; 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.Promax Service Group is better than 100% of HVAC contractors.A
100
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.Promax Service Group is better than 99% of HVAC contractors.A
99
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.Promax Service Group is better than —% of HVAC contractors.–
—
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.Promax Service Group is better than 100% of HVAC contractors.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.Promax Service Group is better than 100% of HVAC contractors.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.Promax Service Group is better than —% of HVAC contractors.–
—

Reviews for your job

Customers hired Promax Service Group for 8 kinds of job.

Promax Service Group for install thermostat

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.5
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).5.00
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.$50–$437
Rank for this jobPosition of this company in the Job match ranking for this job among the companies we track.Its Job match: 78/100.How Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”: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.#53 / 78
Said fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.100%

All 5 Google reviews tagged “Install thermostat”

David4 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 week ago★★★★★

Promax provided exceptional professional service for my heat pump and HVAC installation in my San Jose home. Their estimate included every detail and made me feel confident that I was getting everything done correctly and to code. They coordinated the entire permit process and included all the costs of it in the…

Customer photo from David's review
Reasonable priceHeating system installationInstall thermostatHVAC duct & vent installation
Alexander2 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★★★★★

We replaced our old gas furnace and AC with a Mitsubishi heat pump system through Promax Service Group and are really happy with how everything went. They were recommended by friends, and the whole process was easy from the beginning. The team was knowledgeable, professional, and always explained what was happening.…

Customer photo from Alexander's review
Paid $2,000+Great priceHeating system installationInstall thermostatInstall AC
Youngs1 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. · 5 months ago★★★★★

Promax Service Group truly put their heart and soul into their work, delivering a flawless result. I sincerely recommend them to anyone looking for HVAC installation services.

Paid $1,000+Reasonable priceHeating system installationInstall thermostatHVAC duct & vent installation
Vikram5 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 worked with ProMax  to replace our central HVAC system. My experience with the ProMax team was exceptional. What stood out was their willingness to work with me to design a system that fits our needs, as well as their promptness, professional behavior and speed of execution. Our project involved removing the…

Paid $1,000+Reasonable priceHeating system installationInstall thermostatHVAC duct & vent installation
Albert1 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. · a year ago★★★★★

I recently hired Max from ProMax Service Group to install a new rooftop for my restaurant, and I couldn’t be happier with the results. The entire job was completed in just one day, with impressive speed and professionalism. Not only was the quality of work fantastic, but Max also gave me the most competitive price…

Great priceInstall thermostatHVAC duct & vent installationInstall AC

Price

$1.2k+274% vs typical HVAC contractors

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 50%Reasonable 50%Overpriced 0%Not sure 0%

Jobs customers hired them for

JobReviewsCategory typical
HVAC system repair18$205–$959
Heating system installation11$1.4k–$2.8k
HVAC duct & vent installation8$1.2k–$2.8k
HVAC system maintenance7$37–$295
Ductless heating & A/C services6$877–$2.4k
Install thermostat5$50–$437
Install AC5$1.6k–$3.2k
Heating system repair4$161–$1.2k

Compare with

Nur HVAC logoNur HVACExperts Score 96Sunnyvale · 4.95★United HVAC, Plumbing & Electrical logoUnited HVAC, Plumbing & ElectricalExperts Score 96Sunnyvale · 4.98★Your Appliance, Refrigeration & HVAC repair logoYour Appliance, Refrigeration & HVAC repairExperts Score 96Sunnyvale · 4.96★