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Karns Mechanical ServicesHVAC contractor in Knoxville, TN

Karns Mechanical Services is an HVAC contractor at 7532 Oak Ridge Hwy #1527, Knoxville, TN 37931, ranked #21 of 222 HVAC contractors in Knoxville and rated 4.7 from 137 Google reviews. Open 24 hours a day, 7 days a week.

Knoxville, TNUpdated 0 paid placements in any rankingHow we rank

Call (865) 661-0178Website ↗

Key facts

Key facts about Karns Mechanical Services
Address7532 Oak Ridge Hwy #1527, Knoxville, TN 37931Get directions
Phone(865) 661-0178
Websitekarnsmechanicalservices.com
HoursOpen 24 hours, 7 days a week
Google rating4.7 from 137 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Knoxville and 11 towns within 25 miles: Farragut, Clinton, Oak Ridge, Alcoa, Lenoir City, Eagleton Village, Maryville, Loudon, Seymour, Tellico Village and Kingston.

Based in Knoxville, TNView on map

Opening hours

Opening hours for Karns Mechanical Services
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

Karns Mechanical Services compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Karns Mechanical Services (this business)—624.7 (137)—YesYes
Poteet Heat and Air#19624.9 (91)—YesYes2.5 mi
Pipe Wrench Plumbing, Heating & Cooling#20624.9 (1,082)—YesYes5.4 mi
Dean Plumbing Heating & Cooling#22624.5 (280)—YesYes5.3 mi

See all 222 ranked HVAC contractors in Knoxville

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.7from 137 Google reviews

Hired Karns Mechanical Services? Write a review

Questions about Karns Mechanical Services

How is Karns Mechanical Services ranked in Knoxville?

Karns Mechanical Services is ranked #21 of 222 HVAC contractors in Knoxville by CR Score, with 62 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Karns Mechanical Services’ hours?

Karns Mechanical Services is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Karns Mechanical Services serve?

Serves Knoxville and 11 towns within 25 miles: Farragut, Clinton, Oak Ridge, Alcoa, Lenoir City, Eagleton Village, Maryville, Loudon, Seymour, Tellico Village and Kingston. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about Karns Mechanical Services?

Karns Mechanical Services has a rating of 4.7 from 137 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Karns Mechanical Services?

Call Karns Mechanical Services on (865) 661-0178. The business is at 7532 Oak Ridge Hwy #1527, Knoxville, TN 37931. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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