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A-1 Certified Service, Inc.HVAC contractor in Knoxville, TN

A-1 Certified Service, Inc. is an HVAC contractor at 2511 Byington Solway Rd, Knoxville, TN 37931, ranked #33 of 42 insulation contractors in Knoxville and rated 4.7 from 277 Google reviews. Open Monday to Friday.

Knoxville, TNUpdated 0 paid placements in any rankingHow we rank

Call (865) 691-5088Website ↗

Key facts

Key facts about A-1 Certified Service, Inc.
Address2511 Byington Solway Rd, Knoxville, TN 37931Get directions
Phone(865) 691-5088
Websitea-1certifiedservice.com
HoursMonday to Friday: 8 AM – 4:30 PM
Google rating4.7 from 277 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category
  • Insulationadditional Google category

Service area

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

Based in Knoxville, TNView on map

Opening hours

Opening hours for A-1 Certified Service, Inc.
DayHours
Monday8 AM – 4:30 PM
Tuesday8 AM – 4:30 PM
Wednesday8 AM – 4:30 PM
Thursday8 AM – 4:30 PM
Friday8 AM – 4:30 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

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

A-1 Certified Service, Inc. compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
A-1 Certified Service, Inc. (this business)—524.7 (277)—NoNo
BrandSafway Solutions Knoxville#31534.8 (4)—NoNo16.4 mi
CFI Insulation#32524.0 (4)—NoNo13.8 mi
RetroFoam of East Tennessee#34514.8 (98)—NoNo4.2 mi

See all 42 ranked insulation contractors in Knoxville

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.7from 277 Google reviews

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Questions about A-1 Certified Service, Inc.

How is A-1 Certified Service, Inc. ranked in Knoxville?

A-1 Certified Service, Inc. is ranked #33 of 42 insulation contractors in Knoxville by CR Score, with 52 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 A-1 Certified Service, Inc.’s hours?

A-1 Certified Service, Inc. is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 4:30 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does A-1 Certified Service, Inc. serve?

Serves Knoxville and 11 towns within 25 miles: Farragut, Oak Ridge, Clinton, Lenoir City, Alcoa, Eagleton Village, Maryville, Loudon, Tellico Village, Seymour 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 A-1 Certified Service, Inc.?

A-1 Certified Service, Inc. has a rating of 4.7 from 277 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 A-1 Certified Service, Inc.?

Call A-1 Certified Service, Inc. on (865) 691-5088. The business is at 2511 Byington Solway Rd, 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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