“Mini-splits are the wave of the future,” says Sarah Buss of Flagstaff, Arizona. Buss is a working professional in real estate and home remodels, and she owns a small Airbnb management company. She’s relied on CozyHome—an energy efficiency contractor business in Flagstaff—to install mini-split heat pumps in her personal home, two of her rental properties, and in countless remodels she’s done.

“Besides having the luxury of air conditioning, it really saves on our heating bills,” Buss says of the mini-splits in her own home. “We keep the spare bedrooms and office at 62 degrees and only use the units in the main living area and master bedroom.”