New commercial building energy codes have gone into effect in Seattle, WA. The new codes exceed national energy efficiency standards by nearly 20%.

Although these changes were made to the equipment requirements for commercial buildings, including hvacr systems, a broader revision of the energy codes for residential buildings will take effect in July. The residential revision will require insulation R-values ranging from 21 in the walls to 38 in the ceilings, as well as other changes.

Publication date: 04/29/2002