Preventative maintenance of your heating and air-conditioning equipment is important to ensure long-life and optimum heating and cooling. Filters should be changed at least every 1-3 months. However, if you and/or your family suffer from allergies or if you have any pets, you may want to change them more often. Ask us about an air-filtration system that will remove 98% of all allergens from your home, and don’t forget to ask us about our Annual Maintenance Agreement.