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Emergency HVAC Contractors in Knoxville, TN (2026)

Top 50 of 222 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Knoxville: Hiller Plumbing, Heating, Cooling & Electrical, open 24/7.

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

Top emergency HVAC contractors in Knoxville at a glance

Top emergency HVAC contractors in Knoxville at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Hiller Plumbing, Heating, Cooling & Electrical684.9★ (5,136)Knoxville24/7
2Pioneer Heating, Cooling, Plumbing and Electrical684.8★ (4,534)Knoxville24/7
3HEP is on the way674.6★ (5,839)Knoxville24/7
4GoHero Home Services664.8★ (1,901)Knoxville24/7
5Chancey & Reynolds, Inc. | AC Repair664.9★ (1,363)Knoxville24/7
6Advanced Heat AC & Plumbing664.8★ (1,436)Knoxville24/7
7Rocky Top HVAC, LLC664.8★ (1,067)Knoxville24/7
8AA-Air Company dba Central City Heating & Air Conditioning664.9★ (810)Knoxville24/7
9Aire Serv of Knoxville654.9★ (685)Knoxville24/7
10Cantrell's Heat & Air655.0★ (555)Knoxville24/7

Call an emergency HVAC contractor in Knoxville now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency HVAC contractors in Knoxville, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 222 is on the HVAC contractors page.

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

  4. #4 GoHero Home Services

    Based in Knoxville

    66/100CR Score

    Ranked #4 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 Rocky Top HVAC, LLC

    Based in Knoxville

    66/100CR Score

    Ranked #7 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

  10. #10 Cantrell's Heat & Air

    Based in Knoxville

    65/100CR Score

    Ranked #10 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

  18. #18 Poteet Heat and Air

    Based in Knoxville

    62/100CR Score

    Ranked #18 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

Top 50 of 222 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Knoxville, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26A&A Mechanical Heating & Air615.0★ (45)3 mi
27R & M Climate Control Service Experts614.9★ (2,257)In Knoxville
28Pipe Wrench Plumbing, Heating & Cooling614.9★ (822)20 mi
29A & L HVAC & Plumbing614.9★ (1,383)23 mi
30Lee Company604.8★ (558)17 mi
31One Way Air605.0★ (22)In Knoxville
32Tristar HVAC & Maintenance604.3★ (81)3 mi
33HEP is on the way604.8★ (1,468)In Knoxville
34Captain Comfort Heating and Air Conditioning L.L.C.604.9★ (90)10 mi
35J&J Heating and Air603.9★ (74)1 mi
36Stanley Best Heating & Air Inc604.9★ (511)21 mi
37AC Care Heat & Air594.5★ (16)In Knoxville
38American Mechanical Services595.0★ (124)14 mi
39Eco Home Solutions, Inc.594.8★ (672)23 mi
40DuoTech Heating and Air594.2★ (14)In Knoxville
41Murphy Brothers Mechanical594.9★ (56)11 mi
42Romines Heating And Air, LLC595.0★ (11)3 mi
43One Way Air595.0★ (216)22 mi
44A1 Air Conditioning of Knoxville595.0★ (6)In Knoxville
45Aire Serv of Maryville584.8★ (67)14 mi
46Skyline Heating and Air LLC585.0★ (19)9 mi
47Xpert Air585.0★ (41)13 mi
48Chancey & Reynolds, Inc.584.9★ (211)23 mi
49Gill-Air585.0★ (11)6 mi
50Robbins Heating & Cooling Services574.2★ (16)7 mi

How we ranked emergency HVAC contractors in Knoxville

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

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 from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Knoxville: questions

Which HVAC contractors in Knoxville are open 24/7?

25 on this list post 24/7 hours, including Hiller Plumbing, Heating, Cooling & Electrical, Pioneer Heating, Cooling, Plumbing and Electrical, HEP is on the way, GoHero Home Services and Chancey & Reynolds, Inc. | AC Repair.

Who is ranked #1 for emergency heating and cooling in Knoxville, TN?

Hiller Plumbing, Heating, Cooling & Electrical is #1, with a CR Score of 68 out of 100 on emergency weights.

How are emergency HVAC contractors in Knoxville ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

24 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Knoxville

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

More emergency and heating and cooling pages