The Best HVAC Contractors in Arizona

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1Air Conditioning of Arizona★ 5.00 on this job27 jobs reviewediHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%27Overall Experts Score 20%96Job match= 93Stars are pulled toward the category average (4.89★) 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.93

2Mountainside Air Conditioning Repair★ 5.00 on this job18 jobs reviewedusually $2,000+iHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%18Overall Experts Score 20%95Job match= 90Stars are pulled toward the category average (4.89★) 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.90

3Reliance Heating & Air Conditioning★ 4.89 on this job35 jobs reviewedusually $2,000+iHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%4.89★Number of such jobs 25%35Overall Experts Score 20%96Job match= 88Stars are pulled toward the category average (4.89★) 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.88

4Legendary Energy★ 5.00 on this job12 jobs reviewedusually $800–1,000iHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%12Overall Experts Score 20%97Job match= 87Stars are pulled toward the category average (4.89★) 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.87

5Promise Heating & Air★ 5.00 on this job12 jobs reviewediHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%12Overall Experts Score 20%95Job match= 87Stars are pulled toward the category average (4.89★) 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.87

6Dynamic Comfort AC and Heating★ 5.00 on this job12 jobs reviewedusually $2,000+iHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%12Overall Experts Score 20%96Job match= 87Stars are pulled toward the category average (4.89★) 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.87

7Comfort One Air Conditioning★ 5.00 on this job8 jobs reviewediHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%8Overall Experts Score 20%100Job match= 84Stars are pulled toward the category average (4.89★) 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.84

8Six Star AC & Refrigeration★ 5.00 on this job6 jobs reviewediHow Job match is calculatedBuilt only from reviews Google tagged “Install thermostat”:Stars on this job 55%5.00★Number of such jobs 25%6Overall Experts Score 20%99Job match= 82Stars are pulled toward the category average (4.89★) 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.82

Job match = this company’s ★ on reviews Google tagged “Install thermostat” (shrunk toward the category average when there are few), how many such jobs it has done, and its overall Experts Score.

What customers said about install thermostat

RyanLocal Guide · 59 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★★★★★

Six Star AC & Refrigeration

I decided to go with Six Star after getting an estimate from another company who appeared to try to upsell me on a different type of system that would have required additional electrical work. Additionally, this first company I spoke with recommended a system that wasn't one of the well-known brand names. Joe was… Read full review

Great priceInstall thermostatInstall AC

Carole6 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 2 months ago★★★★★

Legendary Energy

Very prompt & courteous! I’d use them again. Kept me informed all along the way!

Paid $800–1,000Great priceInstall thermostatInstall AC

Eddie5 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★★★★★

Mountainside Air Conditioning Rep…

Christian did my HVAC maintenance today (6.5.26) and he was super knowledgeable, friendly, and fair. He let me know what I needed, even though it wasn't great news, but I kind of expected it since the unit's over 40 years old. He even showed me photos and videos. I totally recommend Mountainside Cooling and Heating!… Read full review

Not sureHVAC system maintenanceInstallationHeating system installation

VanLocal Guide · 29 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★★★★★

Reliance Heating & Air Conditioni…

Outstanding Experience with Reliance Heating & Air Conditioning From the initial estimate to final install, Reliance was outstanding. The estimator provided a very competitive price and clearly explained our options without any pressure. I need to also recognize the two HVAC installers who handled our AC… Read full review

Great priceInstallationHeating system installationInstall thermostat

YsabelLocal Guide · 20 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 6 months ago★★★★★

Dynamic Comfort AC and Heating

With Dynamic Comfort AC and Heating. I have always had excellent service, and polite technicians. Service times were always kept. Any services with a cost, they always discussed and explained prior to it been done. I bought my place in 2016, they kept my 18 year-old unit going which ended up crashing in 2022. They… Read full review

Paid $1–100Reasonable priceHeating system maintenance+ Responsiveness+ Punctuality+ Quality

RobertLocal Guide · 22 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 6 months ago★★★★★

Comfort One Air Conditioning

Great service at great price Called at 12 pm out at 3 GOOD WORK ETHIC ,Neat, clean ,and curtess Thanks again comfort one air

A/C system maintenanceInstall thermostat+ Responsiveness+ Punctuality+ Quality

Overall ratings

Experts Score 0–100iExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of HVAC contractors).

#	Company	ScoreiExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown.	FactorsiFactor grades, in orderSatisfaction (54%): Recency-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.Reliability (24%): How 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.Craft & service (0%): Google 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.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises 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.Replies to reviews (7%): How 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.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20.	★iGoogle star rating as shown on Google Maps.	Typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
1	Comfort One Air ConditioningPhoenix, AZ	A 100iHow 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.	AAAAA–	4.99	$351
2	The AC Team Heating & Cooling LLCPhoenix, AZ	A 99iHow 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%99+54Reliability 24%100+24.2Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 99Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.99	$114
3	Six Star AC & RefrigerationPhoenix, AZ	A 99iHow 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%99+58.1Reliability 26%98+25.6Value 15%100+15.2Experts Score= 99Not 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.	AAAAA–	4.98	$924
4	American Conditioned AirTucson, AZ	A 98iHow 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%98+53.5Reliability 24%98+23.8Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 98Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.96	$161
5	One Hour Heating & Air Conditioning of West ValleyPhoenix, AZ	A 97iHow 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%97+52.9Reliability 24%96+23.3Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AA–AAA	4.97	$251
6	Legendary EnergyPhoenix, AZ	A 97iHow 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%97+52.9Reliability 24%95+23Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.98	$114
7	Reliance Heating & Air ConditioningPhoenix, AZ	A 96iHow 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%96+52.4Reliability 24%96+23.3Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty96−0.4Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.96	$278
8	Air Conditioning of ArizonaPhoenix, AZ	A 96iHow 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%95+51.8Reliability 24%93+22.5Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.97	$295
9	Local Roots AC and Plumbing LLCPhoenix, AZ	A 96iHow 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%97+56.9Reliability 26%93+24.3Value 15%100+15.2Experts Score= 96Not 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.	AA–AA–	4.97	$573
10	Dynamic Comfort AC and HeatingTucson, AZ	A 96iHow 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%96+52.4Reliability 24%95+23Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty97−0.3Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.95	$388
11	Mountainside Air Conditioning RepairPhoenix, AZ	A 95iHow 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%95+51.8Reliability 24%92+22.3Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.96	$295
12	Promise Heating & AirPhoenix, AZ	A 95iHow 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%98+53.5Reliability 24%97+23.5Value 14%100+14.1Replies to reviews 7%63+4.5Craft & service penalty92−0.8Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAB	4.97	$154

What jobs cost

What customers paid, from the price Google asks reviewers to report.

HVAC Contractors in Arizona at a glance

How the 14 HVAC contractors we rated in Arizona compare, and what customers praise most.

How we grade

Satisfaction (54%) — Recency-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.

Reliability (24%) — How 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.

Craft & service (penalty, up to −10) — Google 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.

Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.

Momentum (penalty, up to −10) — Penalises 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.

Replies to reviews (7%) — How 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.