How Much Does Forced Air Heating System Cost in Seattle, Washington?

What you get at each price level

• Basic

  $3.89 – $8.76 per sq ft

  80% AFUE single-stage furnace, sealed sheet metal trunk with insulated flex branches, stamped steel registers and returns

• Standard

  $4.58 – $10 per sq ft

  92-95% AFUE furnace, sheet metal trunk and branches with sealed joints, insulated in unconditioned space, steel registers

• Premium

  $5.73 – $13 per sq ft

  96% AFUE two-stage furnace with variable-speed blower, sealed metal ducts sized from a load calculation, returns in bedrooms