All Season Heating & Air Conditioning

We are a family-owned HVAC team that has served the Helena area since 1984. In 2010, we also opened our doors in Shelby, where our local technicians serve the Hi-Line area under the management of Peder Underdal. Across our work, we value experienced, trustworthy, and honest tradespeople who respond to residential and commercial heating, cooling, and indoor air quality needs in a timely, professional manner and at a fair price.

We provide service, installation, equipment replacement, and indoor air quality products, and we service most makes and models. Emergency service is available 24 hours a day, seven days a week. We offer free in-home estimates, as well as free estimates for new construction and the replacement of older equipment. As a fully insured Premier Lennox Dealer, we carry Contractor Registration number 150921. When a project involves a loop system, we help select the proper option based on a site survey and a detailed energy analysis of the home.

Our preventive maintenance program includes regular furnace and air conditioner inspections, with periodic lubrication, adjustment, safety testing, and cleaning. This maintenance helps equipment operate at peak performance while giving us an opportunity to identify potential problems before they cause trouble. We can provide a completed checklist after each preventive maintenance service.

We also work to make indoor air cleaner and more comfortable. We can install a Healthy Climate PureAir System with a furnace, and our duct-cleaning equipment includes rotary brushes, high-powered air-pressure machines, and powerful vacuums. Duct cleaning also includes furnace cleaning by a professional service technician. Over time, lint can build up in dryer vents, reducing efficiency and creating a potential fire hazard.