John O.
11/16/2025
The team was incredibly on time and helpful. They patiently explained heat pump water heaters and installed one. Yay!
Building Efficiency
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(89)
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2037 Irving St Ste 213
San Francisco, CA 94122
Building Efficiency is a San Francisco-based company specializing in energy upgrades and efficiency audits for homes and commercial properties in the Bay Area. With a team of dedicated professionals, they have helped hundreds of clients save on energy costs through HVAC and insulation upgrades, while also guiding them through rebate programs for additional savings.
Known for their thorough and professional approach, Building Efficiency has received rave reviews from satisfied customers who have experienced increased comfort in their homes and significant reductions in energy bills. Their commitment to customer service and expertise in energy efficiency make them a top choice for those looking to improve the energy performance of their properties.
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Reviews
5.089 reviews
Gindin M.
3/19/2025
This is long overdue, a number of years ago we had building efficiency come out and assess our home, I felt like they were so knowledgeable, professional, and informative - it was truly a...
Amber M.
11/7/2025
We requested a number of quotes for heat pumps, and Building Efficiency was by the far the most knowledgeable and trustworthy, with fair and transparent pricing. Dave also found a creative...
Cliff D.
8/25/2025
Dave and Building Efficiency were the most knowledgeable contractor which I interviewed for our project to install a Heat Pump system in our house. Unlike, several others, Dave sized the system...
Jeremy J.
5/13/2024
David and his team installed a heat pump and heat pump water heater in my home several years ago, and I have been very pleased with them and Building Efficiency's ongoing support. When my garage...
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