Ground Source Heat Pumps

1. Ground Source Heat Pumps Active UES Proposal Presentation to the Regional Technical Forum August 2nd, 2011

2. Background • April 5, 2011: • RTF approved the residential UES measure “Upgrade from ASHP to GSHP” • RTF staff was asked to: • finalize documentation of the measure • measure workbook • technical specifications • Develop savings estimates for proposed UES measures: • “Conversion from FAF w/CAC to GSHP” • “Conversion from FAF w/o CAC to GSHP”

3. Measure Summary • Measure name: Ground Source Heat Pumps • Measure description • In new or existing site-built or manufactured homes, GSHP system upgrade from Air Source Heat Pump or conversion from electric Forced Air Furnace (with or without Central AC). Optional upgrade of Electric Water heater with Desuperheat pre-heating. • Measure type: UES • Requesting Status: Active • (ASHPGSHP already approved as active) • Change in measure status: Yes (proposed active) • Change in measure savings: No (new measure) • Change in measure cost effectiveness: No • Other or follow-on work for RTF: No

4. UES Analysis Summary

9. Measure Costs • Equipment Costs • FAF costs based on: • GSHP and ASHP costs based on sizing • Details given in 4/5/2011 presentation to RTF • Desuperheater Cost = $1,000 • FAF Measure Costs = GSHPcost- FAFcost+Dsprhtrcost(if applicable) • All measures run as “Lost Opportunity” • Measure Life = 20 years

10. Results

11. Note: Measures shown here are for Cooling Zone 1, where applicable. Cooling Zones 2 and 3 also have defined UES measures.

13. Recommendations • RTF Staff recommendation(s) • Adopt measure specifications • Adopt unit energy savings • Adopt measure costs • Adopt Measure life • Sunset Criteria: Measure shall sunset April 5, 2016.

14. RTF Proposed Motion: “I _________ move that the RTF - approve the FAF to GSHP UES measures to Active (or Small Saver)status with a sunset date of April 5, 2016 and - adopt the GSHP Specifications with the following conditions ____________.”