Derived terms [edit]. 1  an even chance. 2  break even. 3  break-even. 4  even as. 5  even-handed. 6  even if. 7  even-keeled. 8  evenly. 9  evenhood. 10  even money. 11  even more. 12  even out. 13  even permutation. 14  even stevens. 15  even-tempered. 16  even up. 17  get even. 18  of even date. 19  uneven.
Typically we suggest a homeâs air ducts be cleaned every five to eight years. Homeowners with children, pets, respiratory issues or a compromised immune system may want to get their HVAC duct system cleaned more often. The better filtration the system has cuts down on cleaning frequency.
EPA does not recommend that the air ducts be cleaned routinely, but only as needed. EPA does, however, recommend that if you have a fuel burning furnace, stove or fireplace, they be inspected for proper functioning and serviced before each heating season to protect against carbon monoxide poisoning.