Top 7 HVAC companies in Knox, Tennessee

Knox County sits in a mixed-humid climate zone with balanced heating and cooling loads. Public records list seven general contractors that perform HVAC work. The ranking applies a Bayesian adjustment that pulls each raw star rating toward the national mean of 4.764, so firms with fewer reviews move closer to that mean while those with more reviews retain more of their raw score.

The shortlist

Ventora Heat & Air

Ventora Heat & Air holds a 5-star rating from 40 reviews and operates from 508 Corum Rd, Knoxville, TN 37924. Call (865) 924-5671. Its general-contractor listing and lack of published 24/7 hours point to standard daytime scheduling for residential and light commercial jobs. The raw 5.0 rating adjusted downward to 4.899 because the 40 reviews still leave room for the national mean of 4.764 to exert pull. These numbers say nothing about how the firm handles warranty claims or how its crews perform on jobs larger than the typical residential change-out.

Hometown Plumbing, Electrical & HVAC

Hometown Plumbing, Electrical & HVAC carries a 5-star rating from 13 reviews at 1832 McCalla Ave, Knoxville, TN 37915. Reach them at (865) 248-5055. The general-contractor category plus published 24/7 availability suggests readiness for after-hours service calls. Its raw 5.0 adjusted to 4.835; the modest review count allowed the national mean of 4.764 to close more of the gap than it did for firms with higher volume. The figures give no information on whether the firm maintains separate crews for plumbing versus HVAC work.

True North Heating and Cooling of Tennessee

True North Heating and Cooling of Tennessee shows a 5-star rating from 5 reviews at 1113 Oaklett Dr, Knoxville, TN 37912. The phone number is (864) 666-1887. Its general-contractor listing and 24/7 availability indicate willingness to respond outside normal business hours. The raw 5.0 adjusted to 4.798; with only five reviews the national mean of 4.764 exerted the strongest downward pull of any firm on the list. These numbers reveal nothing about equipment brands stocked or typical lead times for new installations.

Knoxville Heating & Air Conditioning

Knoxville Heating & Air Conditioning holds a 5-star rating from 11 reviews at 2217 N Broadway, Knoxville, TN 37917. Call (865) 427-4704. The general-contractor listing without 24/7 hours points to conventional daytime service. Its raw 5.0 adjusted to 4.827; the review count of 11 allowed moderate movement toward the national mean of 4.764. The data do not address how the firm prices change-outs versus full ductwork replacements.

J.C.'s

J.C.'s records a 4.8-star rating from 45 reviews at 3110 Henson Rd #7, Knoxville, TN 37921. The contact number is (865) 388-1712. Its general-contractor category without round-the-clock listing suggests standard scheduling. The raw 4.8 adjusted upward to 4.786 because the 45 reviews still permitted the national mean of 4.764 to exert some upward influence. These numbers say nothing about how often the firm subcontracts ductwork.

Heating & AC Air Conditioning Co

Heating & AC Air Conditioning Co shows a 4.8-star rating from 21 reviews at 1621 N Central St, Knoxville, TN 37917. Reach them at (865) 239-9441. The general-contractor listing without 24/7 hours indicates typical daytime availability. Its raw 4.8 adjusted upward to 4.779; the 21 reviews left enough room for the national mean of 4.764 to close part of the gap. The figures provide no detail on parts inventory or emergency response protocols.

Compass Heating & Air Conditioning Inc

Compass Heating & Air Conditioning Inc carries a 4.7-star rating from 51 reviews at 3042 N Central St, Knoxville, TN 37917. The phone number is (865) 673-4931. Its general-contractor listing without published 24/7 hours points to standard business-hour service. The raw 4.7 adjusted upward to 4.724; the higher review count of 51 kept the adjustment smaller than for firms with fewer reviews. These numbers cannot speak to crew training records or long-term system performance.

How to choose

Companies are ranked by a Bayesian-adjusted rating: a company's star rating is pulled toward the national mean until it has enough reviews to stand on its own, so a 5.0 from four customers does not outrank a 4.9 from two hundred. Small tie-breakers apply for a public website, for being listed as an HVAC specialist rather than a general contractor, and for published 24/7 availability. This is a shortlist built from public listing data, not a review of work performed.

Cost

Modeled typical full-system install cost sits at $8,450 with a published range of $7,600 to $9,300. The 2025 invoiced average reached $14,733 while the upper quartile reached $21,822. Labor is listed at $90 per hour and permit fees range from $90 to $300. The two cost sources disagree, with the invoiced average roughly twice the modeled typical price; both figures appear because each reflects a different sampling method. No single average is calculated here.

Climate

Knox County falls in IECC zone 4A with a moist regime. Heating degree days total 3,500 and cooling degree days total 1,700, producing a balanced mixed load profile. Design temperatures are 14 °F in winter and 94 °F in summer, with humid summers. Heat pumps suit the climate well and central air conditioning is near-universal. East Tennessee runs cooler than western parts of the state, so dual-fuel and straight heat-pump systems both appear regularly. Equipment must handle humidity control during the long shoulder seasons without short-cycling.

Licensing and permits

Tennessee issues HVAC licenses at the state level through the Tennessee Board for Licensing Contractors — Department of Commerce and Insurance. The relevant classes are CMC — Certified Mechanical Contractor (Full Mechanical, covers HVAC and plumbing) and CMC-C — Mechanical, HVAC/Refrigeration Contractor. Insurance requirements tie to a CPA-prepared financial statement that sets a monetary limit rather than a flat statewide bond. Permits are required by jurisdiction; a state license is mandatory for any HVAC project of $25,000 or more, while smaller jobs fall under local rules. Check status at https://verify.tn.gov.

Incentives

Tennessee Home Energy Rebates remain conditionally approved with launch planned for Q2 2026 and a maximum heat-pump rebate of $8,000. No state tax credit exists. TVA EnergyRight operates statewide and offers utility rebates from $150 to $1,500, but requires membership in the TVA Quality Contractor Network. Federal 25C and 25D credits expired at the end of 2025; only the commercial 48E ITC survives for qualifying systems. Homeowners should therefore prioritize contractors already inside the TVA network to preserve rebate eligibility.