Douglas Kunz

Building the future with a carbon-free home


Year built: 1993
Year Renovated:  2017 & 2019
Location: Sunnyvale, CA
Type: 2-story single family
Details: 4 bedrooms, 2.5 baths, 1,644 sq. ft.



Induction cooktop
Cook healthier and safer without burning gas

icon of a heat pump mini split

Heat Pump HVAC
Heat and cool your home quietly and efficiently

icon of an electric car with a battery, plug and car illustration

EV Charger
Start each day with a “full tank” and program to charge your car when electricity costs less


Heat pump water heater
Heat your water without producing carbon



When Doug Kunz and his family moved into their Sunnyvale home in 2007, almost every appliance in the house used natural gas. They had always wanted to reduce GHG emissions from their home but weren’t sure how. Then, after reading up on new carbon-free technology and attending a speaker series from Sunnyvale’s Sustainability Commission, they realized the time to go carbon-free was now.

“It was like a light bulb went off and I knew I could convert our house to all-electric immediately!  The technologies for doing this are more mature and cost-effective than people realize. For example, our heat pump HVAC has a variable-speed compressor which saves money and keeps the temperature the same in every room. Basically, everything in the house runs more efficiently and I feel a lot better paying for carbon-free energy rather than paying to dredge goop up out of the ground and light it on fire. We haven’t burned any gas since last January.”

Douglas Kunz / Homeowner