2023 All-Electric Leader
most inspirational residential project
Location: Redwood City
Building type: Single family residential
Status: Completed
Size: 1,750 square feet
Completion date: January, 2022
Energy Use Intensity: 15
Owner: Michael Willcox
Contact: willcox.tony@gmail.com
Overview
After having a rooftop PV solar system installed, Michael turned his attention to converting this 1,750 sq. ft. home from methane to become all-electric. He managed permits and installation for the five-zone mine-split heat pump heating and cooling system, heat pump water heater, and custom heat pump hot tub.
The first step toward electrification for Michael Willcox was the installation of a 9.2 kW photovoltaic system installed by a solar contractor. It was sized for his total electric use plus 1/3rd of the total methane gas use to allow for his subsequent transition to heat pumps.
He installed the multi-zone mini-split heat pump heating and A/C system with the assistance of a contractor who procured parts, vacuum/pressure tested and charged the refrigerant lines (which enabled the warranty). The heat pump water heater, and room-by-room control of the heat pump heating and A/C are fully controlled over Wi-Fi.
Excess electricity from the PV solar system allowed him to convert from a gasoline-power car to electric vehicle.
The PG&E gas line has since been shut off at the meter. Michael has been tracking energy use, and in addition to being carbon-free, he calculates that he is saving money on his energy bill and the house is using less than half the amount of energy.
Special Features:
- Solar photovoltaic system
- Heat pump water heater
- Air source five-zone heat pump heating and cooling
- Air source hydronic heat pump heated hot tub
Project Team:
Architect: Michael Willcox
Mechanical, Plumbing, Electrical, Energy Consultant: Michael Willcox
Contractor: SVS Home Comfort