Experts Reviews · 2026 Ratings

The Best Air Duct Cleaning Services

We graded 28 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.

$432typical jobMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range).
97%say the price was fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.
4.91★average ratingPlain average of every Google star rating we collected for these companies.
1.8%bad jobs (1–2★, 2 yrs)Share of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.

From 27,952 Google reviews of 28 top-rated air duct cleaning services nationwide. Updated October 28, 2026.

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Best air duct cleaning services for thermostat repair

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1C & C Heating & Air Conditioning logoC & C Heating & Air Conditioning★ 4.90 on this job51 jobs reviewedusually $1–200How Job match is calculatedBuilt only from reviews Google tagged “Thermostat repair”:Stars on this job 55%4.90★Number of such jobs 25%51Overall Experts Score 20%90Job match= 90Stars are pulled toward the category average (4.91★) 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
2USA Pro-Vac logoUSA Pro-Vac★ 5.00 on this job8 jobs reviewedHow Job match is calculatedBuilt only from reviews Google tagged “Thermostat repair”:Stars on this job 55%5.00★Number of such jobs 25%8Overall Experts Score 20%84Job match= 82Stars are pulled toward the category average (4.91★) 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
3High Caliber Mechanical logoHigh Caliber Mechanical★ 5.00 on this job5 jobs reviewedusually $400–500How Job match is calculatedBuilt only from reviews Google tagged “Thermostat repair”:Stars on this job 55%5.00★Number of such jobs 25%5Overall Experts Score 20%95Job match= 81Stars are pulled toward the category average (4.91★) 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.81
4Temperature Repair logoTemperature Repair★ 5.00 on this job3 jobs reviewedHow Job match is calculatedBuilt only from reviews Google tagged “Thermostat repair”:Stars on this job 55%5.00★Number of such jobs 25%3Overall Experts Score 20%99Job match= 78Stars are pulled toward the category average (4.91★) 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.78
5T.E. Spall & Son logoT.E. Spall & Son★ 5.00 on this job5 jobs reviewedusually $400–600How Job match is calculatedBuilt only from reviews Google tagged “Thermostat repair”:Stars on this job 55%5.00★Number of such jobs 25%5Overall Experts Score 20%80Job match= 78Stars are pulled toward the category average (4.91★) 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.78

Job match = this company’s ★ on reviews Google tagged “Thermostat repair” (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 thermostat repair

Jeanne1 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. · Edited 3 weeks ago★★★★★
C & C Heating & Air Conditioning logoC & C Heating & Air Conditioning

Mike L was very friendly, professional, knowledgeable, and informative. Even though the job required two visits to repair my furnace issue and install a new humidifier, Mike got things done and even made an alteration to the humidifier ductwork for better delivery of humidity to my home. Thank you, Mike…job well done!

Paid $1,800–2,000Not sureHeating system maintenanceThermostat repairService not listed+ Punctuality
Vicki2 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★★★★★
T.E. Spall & Son logoT.E. Spall & Son

Dan was extremely professional and knowledgeable. It was a pleasure to do business with him and the company

Paid $400–600Reasonable priceHVAC system repairHeating system repairInstall thermostat
April2 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★★★★★
High Caliber Mechanical logoHigh Caliber Mechanical

Robby did a great job. He was very kind about coming and fixing the job quickly.

Paid $400–500Reasonable priceHVAC system maintenanceA/C system maintenanceInstall thermostat
DaveLocal 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. · Edited 3 weeks ago★★★★★
C & C Heating & Air Conditioning logoC & C Heating & Air Conditioning

Finally did a tune up on our furnace, winter’s coming and we wanted it to be in top notch shape. Highly recommend C&C, always top notch. Best around.

Paid $1–200Reasonable priceA/C system repairInstall thermostatThermostat repair+ Quality
Brian4 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★★★★★
C & C Heating & Air Conditioning logoC & C Heating & Air Conditioning

Barry was very knowledgeable and professional. Quickly explained and addressed our thermostat issue.

Paid $1–200Great priceThermostat repair
David14 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★★★★★
C & C Heating & Air Conditioning logoC & C Heating & Air Conditioning

Tyler the technician was great to deal with ...informative and good guy. Brian H came out next day and showed me many options for a new furnace and AC unit ....i was very impressed with his no pressure attitude and just a genuine guy.....

Reasonable priceHVAC system repairHeating system installationThermostat repair

Overall ratings

Experts Score 0–100Experts 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 air duct cleaning services).

#CompanyScoreExperts 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.FactorsFactor 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.★Google star rating as shown on Google Maps.Typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
1All Around Heating & Cooling logoAll Around Heating & CoolingCullman, ALA 100How 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.AA–AA–5.00$322
2Fresh Air Duct Cleaning logoFresh Air Duct CleaningTroy, MIA 99How 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%99+25.8Value 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–4.99$410
3Zeppelin Cleaning Services logoZeppelin Cleaning ServicesTroy, MIA 99How 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%100+26.1Value 15%93+14.2Experts 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.AA–AA–5.00$441
4Donald's Duct Cleaning logoDonald's Duct CleaningTroy, MIA 99How 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%99+25.8Value 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–5.00$432
5Temperature Repair logoTemperature RepairTroy, MIA 99How 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.AAAAAA4.99$600
6Cullman Heating & Air - HVAC Contractor logoCullman Heating & Air - HVAC ContractorCullman, ALA 99How 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%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–5.00$337
7Southeastern Kitchen Exhaust Cleaning logoSoutheastern Kitchen Exhaust CleaningCullman, ALA 98How 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%94+14.3Experts Score= 98Not 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–5.00—
8C&S Cleaning Services, LLC logoC&S Cleaning Services, LLCMeadville, PAA 97How 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%98+6.9Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.AAAAAA4.97$297
9Carpet Cleaning in Cullman Alabama logoCarpet Cleaning in Cullman AlabamaCullman, ALA 96How 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%97+23.5Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty84−1.6Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.AAAAAA4.95$206
10High Caliber Mechanical logoHigh Caliber MechanicalCullman, ALA 95How 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%96+23.3Value 14%100+14.1Replies to reviews 7%85+6Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.AAAAAA4.96$529
11Cullman Cleaning Co. logoCullman Cleaning Co.Cullman, ALA 95How 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%96+23.3Value 14%100+14.1Replies to reviews 7%85+6Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.AAAAAA4.95$275
12Davis Carpet Cleaning Plus logoDavis Carpet Cleaning PlusCullman, ALA 95How 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%97+23.5Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty88−1.2Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.AAAAAA4.95$211

What jobs cost

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

JobLow25th percentile: 1 in 4 customers paid less than this.TypicalMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range).High75th percentile: 1 in 4 customers paid more than this.FairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.
HVAC duct & vent cleaning$478$593$74299%
HVAC system maintenance$54$209$58198%
Heating system maintenance$37$114$21998%
A/C system maintenance$26$83$25198%
HVAC system repair$148$340$64296%
Heating system repair$124$258$80996%
Heating system installation$1.2k$1.9k$2.8k99%
Install AC$2.1k$2.8k$4.3k99%
A/C system repair$158$351$73096%
Cleaning$99$443$55499%
HVAC duct & vent repair$276$506$77196%
Installation$1.2k$1.7k$2.4k98%

Air Duct Cleaning Services at a glance

How the 28 air duct cleaning services we rated compare, and what customers praise most.

Experts Score grades

A = score 80+, F = below 20.

  • Grade A2693%
  • Grade B27%
  • Grade C00%
  • Grade D00%
  • Grade F00%

Google ratings

Average stars per company.

  • 4.90★ and up1968%
  • 4.80–4.89★725%
  • 4.60–4.79★27%
  • Below 4.60★00%

What customers praise

Share of Google review highlights.

  • Quality5,84821%
  • Professionalism6,52624%
  • Responsiveness5,23019%
  • Punctuality5,50720%
  • Value4,23715%

Was the price fair?

All price verdicts left with reviews.

  • Great price1,45331%
  • Reasonable2,77159%
  • Overpriced1283%
  • Not sure3327%

Price verdicts by year

Share calling it great / reasonable / overpriced.

2025
2026

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.