How to Prepare Your HVAC System for Montana’s Freeze–Thaw Cycles
Montana’s winters are known for dramatic temperature swings. Days of subzero cold can quickly give way to sunny afternoons above freezing—then back again. These freeze–thaw cycles put extra stress on your home’s heating and cooling system. A little preparation now can keep your HVAC equipment running smoothly all winter.
1. Schedule a Professional Inspection
Have a licensed technician inspect your furnace, heat pump, and ductwork before winter hits. They’ll check for worn parts, leaks, and signs of corrosion caused by rapid temperature changes.
2. Replace or Clean Air Filters
Dirty filters restrict airflow, forcing your system to work harder as it battles fluctuating temps. Swap them out every 30–60 days during heavy use.
3. Seal Air Leaks
Drafts around windows, doors, and attic spaces allow warm air to escape and cold air to enter, making your system cycle on and off more often. Caulk gaps and add weatherstripping to cut energy loss.
4. Protect Outdoor Units
Clear snow, ice, and debris from around your heat pump or AC condenser. Ensure at least two feet of clearance so melting snow can drain without refreezing and damaging components.
5. Test Your Thermostat
Programmable or smart thermostats help manage sudden temperature swings. Set schedules that keep indoor temps consistent, reducing stress on equipment.
6. Check Drain Lines and Humidifiers
Freeze–thaw cycles can cause condensation lines to freeze or back up. Make sure drain lines are clear and that any whole-home humidifier is operating correctly.
Keep Your System Winter-Ready
Proactive maintenance is the best way to avoid emergency repairs when temperatures drop. Patriot Heating & Cooling offers seasonal tune-ups and full HVAC service across Montana—so your home stays comfortable no matter how wild the weather gets.
Read Next: How to Balance Temperature and Humidity for Maximum Comfort