Service, Installations, and Maintenance

Do you want to install a new gas furnace in your home or actually fix what's wrong with instead of replace it? Turn to the highly experienced and skilled professionals at A-1 Heating & Air in Bismarck & Mandan, ND. Our locally owned and operated business has been serving your community for nearly 15 years. We emphasize on giving permanent solutions instead of temporary fixes. Looking for furnace installation services? Give us a call today to get your estimate!

Our Residential Heating Services Include

  • Air conditioning sales and installation
  • Air conditioning repairs and maintenance
  • Heat pump sales and installation
  • Heat pump repairs and maintenance
  • Mini-splits or ductless system repairs and maintenance
  • Geothermal system repairs and maintenance

We can order any furnace on the Heil website.
The make and models below are readily available!

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"Outstanding company with exceptional customer service. Dustin and his team are the best in the business for our city!"


G96VTN QuietComfort®
96 Gas Furnace

Keep cozy when it's cold outside with our high-efficiency gas furnace. Its reliable two-stage operation and variable-speed blower provide enhanced temperature control for your comfort. The variable-speed blower also means you'll enjoy better summer dehumidification as your furnace works with your cooling unit to help pull moisture out of the air.

N95ESN Performance 95 Gas Furnace

Keep cozy with our affordable and efficient gas furnace. Its reliable single-stage operation and 5 speed blower provide even levels of temperature control for your comfort. It offers an up to 96% AFUE rating that may significantly increase efficiency over older models.

N80ESN Performance 80 Gas Furnace

As part of a complete, year-round comfort system, this single-speed furnace can be setup to deliver optimized airflow to your living spaces with our discrete tapped blower.