Sep 8, 2026
How Much Does HVAC Replacement Cost? (2026 Cost Guide)
Reading Time About 16 Min
24/7 Emergency HVAC Services (Commercial)
Grissom Heat & Air
VerifiedEstablished · 40 yrs
4.8(49 reviews)•Residential & Commercial•Serving Knoxville, TN
EPAEnergy StarLicensed, Bonded, And InsuredNATENCI
Provides emergency HVAC services in Knoxville, TN
Grissom Heat & Air is a commercial HVAC contractor based in Knoxville, TN. Services listed include emergency HVAC repair, residential HVAC emergency services and commercial HVAC emergency services. 40 years in business and emergency service available.
40
Years in Business
Yes
Emergency Service
Available
Financing Available
Knoxville, TN
Service Area
Services Offered
Customer Sentiment Summary
Strengths
- Conduct on site is the headline: 14 of 43 reviewers describe the crew as professional, courteous and respectful of their home.
- Easy to deal with: 5 reviewers highlight fast responses and plain-English explanations.
Areas to Watch
- Quote transparency is mostly positive but not unanimous: 6 of the 43 reviews analysed raised it, and a minority had problems.
- Arrival punctuality is mostly positive but not unanimous: 3 of the 43 reviews analysed raised it, and a minority had problems.
Reviews from Best HVAC visitors
No Best HVAC reviews yet
Been a customer of Grissom Heat & Air? Be the first to rate them.
Get Your HVAC Business Listed
Want to put your heating and cooling company in front of local homeowners and businesses actively searching for reliable HVAC services? Claim your spot and connect with high-intent customers in your area.
Get Featured
Blog / News
View all articles HVAC Tips, Guides & Industry News
Sep 7, 2026
Why Does My Thermostat Screen Go Blank?
Reading Time About 6 Min
Sep 6, 2026
How to Clean AC Condenser Coils Safely
Reading Time About 7 Min
Sep 3, 2026
AC Blowing Warm Air? Common Causes and Fixes
Reading Time About 6 Min
FAQ
Contact Our TeamFrequently Asked Questions
Have another question? Our team is here to help.
Grissom Heat & Air lists emergency HVAC repair, residential HVAC emergency services and commercial HVAC emergency services. Contact them to confirm they handle your specific job.
Grissom Heat & Air is based in Knoxville, TN.
Yes, Grissom Heat & Air lists emergency service. Call them directly for urgent heating or cooling repairs.
Use the call button, website link or contact details on this page to reach the company directly.
Get in touch and we will keep your listing details accurate and add photos.