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.
1 Air duct cleaning cost should fall somewhere between $400 and $1,200. 2  For a single-zone system (one with a single furnace), expect to pay $300 to $600.3  For a two-zone system (one with two furnaces), costs might reach $600 to $1,200. 4  Some companies charge a flat fee for ductwork cleaning, while others have hourly rates.uct Cleaning Prices. Your homeâs HVAC (heating, ventilation, and air conditioning) system relies on a network of metal air ducts to deliver heated and cooled air throughout the building.