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ContractorsRanked

Best HVAC Contractors in Knoxville, TN (2026)

222 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Knoxville: Hiller Plumbing, Heating, Cooling & Electrical, CR Score 68/100; 4.9★ from 5,136 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Pioneer Heating, Cooling, Plumbing and Electrical, posts 24/7 hours; ranked #2 of 222.

  3. 3

    Most-reviewed: HEP is on the way, 5,839 Google reviews at 4.6★, the most of 222 ranked; ranked #3.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

222 Knoxville HVAC contractors are ranked here by CR Score, from ten published factors. 74 are open 24/7, 138 open Saturdays and 98 open Sundays, based on posted hours. The median Google rating is 4.9★ across 222 rated businesses.

Top 10 HVAC contractors in Knoxville at a glance

Top 10 HVAC contractors in Knoxville at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Hiller Plumbing, Heating, Cooling & Electrical684.9★ (5,136)Knoxville24/7Overall
2Pioneer Heating, Cooling, Plumbing and Electrical674.8★ (4,534)Knoxville24/7Emergencies
3HEP is on the way664.6★ (5,839)Knoxville24/7Most reviews
4Chancey & Reynolds, Inc. | AC Repair664.9★ (1,363)Knoxville24/7—
5GoHero Home Services664.8★ (1,901)Knoxville24/7—
6Advanced Heat AC & Plumbing664.8★ (1,436)Knoxville24/7—
7Cantrell's Heat & Air655.0★ (555)Knoxville24/7—
8AA-Air Company dba Central City Heating & Air Conditioning654.9★ (810)Knoxville24/7—
9Rocky Top HVAC, LLC654.8★ (1,067)Knoxville24/7—
10Aire Serv of Knoxville654.9★ (685)Knoxville24/7—

The 222 best HVAC contractors in Knoxville, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  3. #3 HEP is on the way

    Based in Knoxville

    66/100CR Score

    Ranked #3 because of its Google rating and review volume: 4.6★ from 5,839 Google reviews, the most in Knoxville.

    • 4.6★ from 5,839 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1605 Prosser Rd, Knoxville, TN 37914
    View profile for HEP is on the way(865) 444-0565

  5. #5 GoHero Home Services

    Based in Knoxville

    66/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,901 Google reviews, listed on Google as “Air conditioning contractor”.

    • 4.8★ from 1,901 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6283 Clinton Hwy, Knoxville, TN 37912
    View profile for GoHero Home Services(865) 622-3905

  7. #7 Cantrell's Heat & Air

    Based in Knoxville

    65/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 555 Google reviews, listed on Google as “Air conditioning contractor”.

    • 5.0★ from 555 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5715 Old Tazewell Pike, Knoxville, TN 37918
    View profile for Cantrell's Heat & Air(865) 687-2520

  9. #9 Rocky Top HVAC, LLC

    Based in Knoxville

    65/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.8★ from 1,067 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,067 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7327 Oak Ridge Hwy, Knoxville, TN 37931
    View profile for Rocky Top HVAC, LLC(865) 474-1511

  16. #16 John H Coleman Co

    Based in Knoxville

    62/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.9★ from 922 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 922 Google reviews
    Hours
    Mon–Sat 7 AM–8 PM · Sun closed
    Address
    805 Corridor Park Blvd, Knoxville, TN 37932
    View profile for John H Coleman Co(865) 350-5119

  19. #19 Poteet Heat and Air

    Based in Knoxville

    62/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.9★ from 91 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 91 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3404 Hackberry Rd, Knoxville, TN 37931
    View profile for Poteet Heat and Air(865) 206-3031

HVAC contractors ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 222 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Knoxville, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Pipe Wrench Plumbing, Heating & Cooling614.9★ (441)14 mi
27TayFer Heating and Cooling LLC615.0★ (33)In Knoxville
28Roger L Newman Co614.9★ (1,332)15 mi
29A&A Mechanical Heating & Air615.0★ (45)3 mi
30Comfort Specialists Heating & Cooling614.9★ (36)In Knoxville
31R & M Climate Control Service Experts614.9★ (2,257)In Knoxville
32Aire Serv of Sevierville604.8★ (544)15 mi
33Pipe Wrench Plumbing, Heating & Cooling604.9★ (822)20 mi
34A & L HVAC & Plumbing604.9★ (1,383)23 mi
35Smith Heating and Air604.9★ (265)In Knoxville
36One Way Air605.0★ (22)In Knoxville
37865 HVAC & Plumbing604.9★ (680)In Knoxville
38Lee Company604.8★ (558)17 mi
39HCS Mechanical Contractors605.0★ (465)In Knoxville
40Cook's Comfort Systems, Inc.604.8★ (570)In Knoxville
41Stanley Best Heating & Air Inc594.9★ (511)21 mi
42Captain Comfort Heating and Air Conditioning L.L.C.594.9★ (90)10 mi
43HEP is on the way594.8★ (1,468)In Knoxville
44American Mechanical Services595.0★ (124)14 mi
45Knox Air Department595.0★ (34)1 mi
461st Choice Heating and Air594.9★ (126)In Knoxville
47Standard Air Conditioning and Electrical Co.595.0★ (268)In Knoxville
48Shield Services, LLC.594.8★ (93)In Knoxville
49Lloyd's Electric Service594.8★ (543)In Knoxville
50AC Care Heat & Air594.5★ (16)In Knoxville

Also serving Knoxville

20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked HVAC contractors serving Knoxville
BusinessGoogle ratingDistance
A1 Air Conditioning of Knoxville5.0★ (6)In Knoxville
Aire Serv of Maryville4.8★ (67)14 mi
BESCO3.9★ (26)In Knoxville
C&L Heating & Air5.0★ (1)In Knoxville
Certified Heat & AirIn Knoxville
Cook's Mechanical Services5.0★ (1)In Knoxville
DuoTech Heating and Air4.2★ (14)In Knoxville
E Solutions for Buildings, LLC5.0★ (1)In Knoxville
Extreme Climate Heating & Cooling5.0★ (1)In Knoxville
Harris & Swicegood Inc Heat3.3★ (15)In Knoxville
Knoxville Heating & Air Conditioning5.0★ (1)In Knoxville
One Way Air5.0★ (216)22 mi
Precision Comfort, LLC5.0★ (1)In Knoxville
Prudent Energy Systems5.0★ (1)In Knoxville
REA, Inc.4.5★ (2)In Knoxville
RetroFoam of East Tennessee4.8★ (98)In Knoxville
TennAir-15.0★ (1)In Knoxville
Tennessee Standard Plumbing and Drain5.0★ (561)In Knoxville
THE EASTENN COMPANY - KNOXVILLE ELECTRICIAN4.7★ (13)In Knoxville
Tristar HVAC & Maintenance4.3★ (81)3 mi

How much do HVAC contractors cost in Knoxville?

National price ranges in USD, not adjusted for Knoxville. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Knoxville?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

How to check an HVAC contractor's license in Tennessee

In Tennessee, Tennessee Board for Licensing Contractors licenses Contractor licenses (mechanical/HVAC classification).

  1. Search the business name or license number on the Tennessee Board for Licensing Contractors license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

When to hire an HVAC contractor in Tennessee

HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Knoxville HVAC contractors

We scored 222 Knoxville HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Knoxville data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

HVAC contractors in Knoxville: frequently asked questions

Who is the best HVAC contractor in Knoxville?

By CR Score, the highest-ranked HVAC contractor in Knoxville, TN is Hiller Plumbing, Heating, Cooling & Electrical with a CR Score of 68/100. It has 4.9★ from 5,136 Google reviews. It is open 24/7. Pioneer Heating, Cooling, Plumbing and Electrical (#2) and HEP is on the way (#3) follow. We ranked 222 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Knoxville?

ContractorsRanked ranks 222 HVAC contractors serving Knoxville, TN. 35 of them are based in Knoxville; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Knoxville are open 24/7?

74 ranked HVAC contractors in Knoxville post 24/7 hours. The highest-ranked are Hiller Plumbing, Heating, Cooling & Electrical (#1), Pioneer Heating, Cooling, Plumbing and Electrical (#2) and HEP is on the way (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Knoxville work on weekends?

138 of 222 ranked HVAC contractors post Saturday hours and 98 post Sunday hours. The highest-ranked open Saturdays are Hiller Plumbing, Heating, Cooling & Electrical (#1), Pioneer Heating, Cooling, Plumbing and Electrical (#2) and HEP is on the way (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check an HVAC contractor's license in Tennessee?

In Tennessee, Tennessee Board for Licensing Contractors handles licensing and covers Contractor licenses (mechanical/HVAC classification). Search the business or license number at https://verify.tn.gov/.

How much does ac replacement cost in Knoxville?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Knoxville. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Knoxville HVAC contractors have?

The median Google rating among 222 rated HVAC contractors in Knoxville is 4.9★, with a median of 34 reviews. HEP is on the way has the most, 5,839 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Knoxville?

HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.

Update log for Knoxville

  1. October 2026: CR Scores recalculated for 222 hvac contractors serving Knoxville.
  2. October 2026: 1 duplicate listing merged.

More HVAC contractors and Knoxville pages

Other trades in Knoxville