Skip navigation


Customized Heating and Cooling in Knoxville, TN

The equipment you use to heat and cool your home should be durable enough to stand up to the toughest conditions. We have the right HVAC systems for you: our ONYX line of heating and cooling equipment. These systems are specially designed for the climate of East Tennessee. We named the line after onyx, one of the hardest natural crystal formations in the world—and you’ll discover why when you have our Russell & Abbott team install an ONYX system for your home comfort.

Call today to find out more about our ONYX heating and cooling equipment!


Heat Pumps

Our ONYX heat pumps are available as both split systems and packaged systems. A split system heat pump is an excellent choice for both heating and cooling a home in our climate. They are excellent replacements for standard split system air conditioners and furnaces because they can operate as both heating and cooling systems. Packaged heat pumps operate the same, but all the components are housed in a single outdoor unit, an effective option for saving space.

Dual Fuel Systems

You may wish to stick with the combination of an air conditioning system and a gas furnace. If so, then the ONYX gas/electric split system is one of your best choices. We offer dual fuel systems in single or two-stage furnaces and single, two-stage, or variable speed multi-stage air conditioners. We also offer packaged units for our dual fuel system installations. As with all of our ONYX equipment, these dual fuel systems come with our special 10-10-10 Warranty. 

10-10-10 Warranty

We have the confidence in our ONYX heating and cooling equipment to back it up with one of the strongest guarantees you’ll find. It’s our "10-10-10 Warranty" which comes with the purchase of a new qualifying system. This means you get:

  • 10 Years All Parts—No exceptions!

  • 10 Years Labor

  • 10 Years Maintenance

What this all comes down to, and what it means to you, is that if your unit fails and it’s registered, it’s covered—no exceptions! We stand behind our equipment at Russell & Abbott and know you’ll receive fantastic service from your durable ONYX installation in Knoxville, TN and the surrounding areas.