•Ductless mini-split heat pump

1. Significantly reduces HVAC system size

2. No more need to pressurize building?

3. Special routine for high-rise towers

Take Two:

1. HVAC efficiency + 15%

2. Lighting power – 25%

3. Digital lighting controls

4. Solar

5. DOAS

6. Water heating type

7. Envelope UxA – 15%

8. Air leakage 0.25 Group R … 0.22 cfm all other

Close to full energy code compliance for major remodels

“…substantially extend the useful physical or economic life of the building”

DOAS: D O A S

Say Goodbye to VAV/Reheat?

•Max 150% of ASHRAE 62.1 ventilation rate to each zone

•DOAS requires energy recovery• …or at least it was supposed to

Carbon-Neutral

duane.jonlin@seattle.gov