For most new homes on the Wasatch Front, a high-efficiency gas furnace (96% AFUE) paired with a 16+ SEER2 central air conditioner remains the most cost-effective system given Utah’s natural gas infrastructure and cold winters. For all-electric or net-zero builds, a cold-climate heat pump with supplemental electric resistance backup is the recommended alternative. Homes in mountain communities above 6,000 feet benefit from a hybrid system — a heat pump with gas furnace backup — that uses the heat pump for mild-to-cold days and switches to gas below the heat pump’s balance point. Mini-splits are ideal for additions, basements, and zones where ductwork is impractical. RainFire Builders presents system options with energy cost modeling for every new build so you can make a fully informed decision.