Description: Gilliam's Heating & Cooling serves residential and commercial customers throughout Northeast Tennessee and Southwest Virginia Residents have trusted us since 1987 for our quality service on our HVAC, heating and air conditioning systems. We sell and install Trane equipment and service most other brands! 24 Hour Emergency Service All Technicians are NATE Certified Trane Comfort Specialist Financing Available on All New Installations Free Estimates on New Systems Family Owned and Operated TVA Quality Contractor Licenced, Bonded, and Insured HVAC Repair & Installation Summer got you steamy? Cold snap has you shivering? Relax. Gilliam's team of HVAC repair specialists is committed to your well-being. We'll have you comfortable in no time. Let HVAC experts inspect your home's heating and cooling systems to ensure they are performing as they should. Whether it's a minor HVAC system repair, new unit installation, or a major heating or AC emergency, Gilliam's Heating & Cooling has East Tennessee and Southwest Virginia covered! Call today to schedule an inspection or repair of your HVAC system, furnace, heat pump or air conditioning unit.
Hi there!
Rate this business!
First-classBetter than mostAbout what I expectedNot the worst...Disappointing
Click to Rate


Share Review

Like this review? Share it on your social network to get the word out!


No communication skills

Called Gilliam's Heating and Cooling THREE times. Each time someone stated that they would call back to schedule an appointment to come to my home to investigate my cooling issue. No one has called within the 2 weeks we’ve waited. Extreme lack of communication. Have gone on to choose another local company. Will spread the word regarding their poor communication skills.



Provided by

Excellent customer service!!!! Dan is a great technician. Knows his stuff!


Excellent customer service

Wonderful service technicians. Really nice and fast service.

More Business Info


BBB Rating
BBB Rating and Accreditation information may be delayed up to a week.
Regular Hours
Mon - Sun:
  • Zoning
  • 24 HR Emergency Service
  • Efficiency
  • Geothermal Systems
  • Gas Furnaces
  • Licensed
  • Insured
  • We Service All Brands
  • Heat Pumps
  • Bonded
  • 24 HR Emergency
  • heating units
  • Service
  • energy consumption
  • variable speed furnace
  • digital thermostat
  • Communicating Systems
  • heat
  • Repair
  • Oil
  • air quality
  • dealer
  • installation
  • perfect fit
  • programmable
  • dual fuel
  • furnace cleaning
  • connected home solutions
  • NATE certified
  • geothermal
  • Air Conditioning Dealers
  • reliable and durable energy efficient systems
  • whole house air filtration system
  • air conditioner service
  • Packaged Units
  • Gas Furnaces
  • Energy Recovery Ventilators
  • filtered air
  • electric
  • Indoor Coils
  • Sales and Service
  • High Efficiency Systems
  • heating and cooling
  • humidity
  • Humidifiers
  • allergens
  • air conditioning suppliers
  • contractors
  • air
  • energy tax credit
  • hybrid
  • split systems
  • filter
  • energy efficiency
  • Sales
  • temperature control
  • energy saver
  • high efficiency
  • advanced controls
  • moisture control
  • energy conservation
  • air purifying
  • limited warranty
  • heating equipment
  • pollen
  • furnace sales
  • air conditioning equipment
  • Mini-Splits
  • air conditioner repair
  • CleanEffects
  • comfort systems
  • Climate Control
  • zoning
  • central air
  • install
  • extended warranty
  • air cleaning
  • cleaning
  • all aluminum
  • HVAC
  • Heat Pumps
  • credit terms
  • comfort specialist
  • Air Filtration Systems
  • Gas
  • furnace equipment
  • HVAC Gas Furnaces Heat Pumps Air Conditioners Geothermals
  • comfort and efficiency
  • all-in-one
  • air filtration
  • cooling units
Bryant, Goodman, Trane, WaterFurnace, bryant, electric, trane
Payment method


Air Conditioning Service & Repair, Air Cleaning & Purifying Equipment, Air Conditioning Contractors & Systems, Air Conditioning Equipment & Systems, Air Pollution Control, Boiler Dealers, Boilers Equipment, Parts & Supplies, Construction Engineers, Environmental & Ecological Consultants, Environmental & Ecological Products & Services, Fireplace Equipment, Fireplaces, Heating Equipment & Systems, Heating, Ventilating & Air Conditioning Engineers, Professional Engineers