Frequently Asked Questions

We recommend changing your furnace filter about every three months. Homes with pets, allergies, or heavier system use may need more frequent filter changes.

Before removing your old filter, turn your furnace off at the thermostat. This prevents the system from pulling dust and debris into the furnace while the filter is being changed.

We recommend having your gas furnace professionally serviced once a year, ideally before the heating season.

Annual maintenance allows a technician to make sure your furnace is operating properly and efficiently while also checking important safety controls and components.

Check the manufacturer's recommendations for your specific carbon monoxide detector, as replacement intervals can vary by model.

Many carbon monoxide detectors need to be replaced every 3–5 years. Be sure to test your detectors regularly and replace batteries according to the manufacturer's instructions.

We recommend having your air exchanger checked in the fall, around the same time as your annual furnace maintenance.

Many air exchangers have washable filters that need regular cleaning. Keeping your air exchanger maintained helps it properly ventilate your home and manage indoor humidity throughout our Northern Minnesota winters.

It's a good idea to have your air-source heat pump checked twice a year—once in the spring before cooling season and again in the fall before heating season.

Regular maintenance helps keep your heat pump operating efficiently and gives you confidence that it's ready for the changing seasons.