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Lighting Seattle since 1905 Jorge Carrasco, Superintendent
Conservation: Be Smart & Build Smart
Built Smart Users Manual: Specifications Chapter 4:
HVAC Systems
Built Smart Users Manual | Specifications | Alerts | Water

In order to receive shell measure or thermostat incentives, the primary heating system must be electric. The heating contractor is responsible for designing and installing the heating system to meet all UMC, NEC, applicable local codes and equipment manufacturers' requirements.

4.1 Heating and Cooling Thermostats
4.1.1 Zone Systems. Each separated heating system in the unit shall have at least one thermostat per zone mounted on an interior wall, at the manufacturer's recommended height, to regulate temperature. See Section 8 for details on the optional BUILT SMART thermostat incentive.
4.1.2 Electric Forced Air Furnace (Non-Heat Pump). For central furnace or similar type systems, a low-voltage, micro process-controlled programmable electronic thermostat shall be installed.
4.1.3 Ducted Heat Pump Systems. Heat pump thermostats used for both heating and cooling shall have a manual changeover feature or heating/cooling lockout to prevent cross cycling between heating and cooling. A programmable electronic setback thermostat shall be used and shall be of the ramped/intelligent recovery types to limit supplemental heats during the recovery period and have at least two set-back periods per day.
4.1.4 Package Terminal Heat Pumps (PTHP [non-ducted]). Heat pump thermostats used for both heating and cooling shall have a manual changeover feature or heating/cooling lockout to prevent cross cycling between heating and cooling.
4.2 HVAC Duct Sealing
All supply and return ducts, air handlers and plenums inside and outside the heated space shall be sealed at all joints and corners, including prefabricated joints and longitudinal seams. All joints in the HVAC ducts shall be mechanically fastened.
4.3 HVAC Duct Insulation
All HVAC ducts outside heated space shall be insulated.
4.3.1 Rigid metal ducts and plenums outside the heated space shall be insulated to R-19.
4.3.2 Exhaust ducts outside the heated space shall be insulated to R-8, minimum.

Interested in BUILT SMART incentives?
Contact Peter Held at peter.held@seattle.gov or 206.684.3605. For affordable housing projects, please contact Lisa Frasene at lisa.frasene@seattle.gov or 206.684.3182.

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