25%
or less of hot water
75% to 99%
of space heating
100%
or more of air conditioning
$24,275
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25%
or less of hot water
75% to 99%
of space heating
100%
or more of air conditioning
$24,275
Property
- Owner:
- Bob Large
- Type:
- Residential
- Address:
- 44320 Munz Ranch Road, Lake Hughes, CA 93532
- Size:
- 3,000 sq ft
- Energy need met:
- 25% or less of hot water
- 75% to 99% of space heating
- 100% or more of air conditioning
- Designations:
- Deep energy retrofit
- Zero net energy
- Event Participation:
- ASES National Solar Tour 2015 Host
Technology
- Type:
- Geothermal
- Installed:
- November 2014
- Size of System:
- 4 tons
- Purposes:
- To heat hot water
- For space heating
- For air-conditioning
Financial Details
- Gross Cost of System:
- $34,678
- Value of Tax Credits:
- $10,403
- Net Cost of System:
- $24,275
- Own or Lease:
- Cash Purchase
- Additional Financial Notes:
- Financed through credit union Home Equity Line of Credit (HELOC) loan.
What You Need to Know
Description:
To complement the PV power system, a Water Furnace 7 Series Continuously Variable GSHP was installed. This system includes a closed loop, horizontally-trenched Ground Heat Exchange (GHEX) pipe, with 5 x 125' trenches, 5000' of pipe, unpressurized variable speed flow center, slaved to the GSHP system. De-superheater DHW, MERV11 Air Filter and Performance monitoring options.
Other Benefits:
Replaced noisy external compressor unit, freed space adjacent to house.
Maintenance Requirements:
Semi-annual filter replacement, had to add some water to flow center.
Efficiency or Sustainability Improvements:
External sun screen, lighting upgrade to LEDs, upgraded interior blinds, insulated garage door, bamboo flooring, upgraded windows, etc.
My Motivation:
(1) Sustainable future concern (2) Energy cost savings
Advice:
Had to go beyond local contractors to get significant systems. Some extra effort and time required to work with Building and Safety, due to uniqueness of system.
Experience with Installer:
Excellent team. Worked with me on hiring local backhoe operator. Primary goal was to obtain most efficient system available.
Additional Notes:
Due to lack of local climate/soil data, I did extensive research prior to signing the contractor. Trenching was very challenging due to step slopes and tough digging (decomposed granite).
Open House Info:
9:00 AM to 5:00 PM on Saturday, 3 October 2015 and Sunday, 4 October 2015, The house is on a ridge several hundred yards off of Munz Ranch Rd on a private road. Limited parking right at the house, but we will ask neighbors to assist in providing overflow parking.
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