Marin County
Heat Pump, HVAC & Water Heater Services in San Anselmo, CA
Heat pumps, water heaters, AC, furnaces, and mini splits for San Anselmo homes. Same-day water heater replacement when our schedule allows.
Green Core Heating & Air installs and services heat pumps, ductless mini splits, water heaters, furnaces, and air conditioning for homes in San Anselmo, CA, from older homes near downtown to hillside houses in Sleepy Hollow. Many homes in the Ross Valley were built long before central air, so upgrades here are about adding efficient heating and cooling in a way that fits an older house.
Whether you're browsing the shops on San Anselmo Avenue, relaxing in Creek Park, or walking up toward Red Hill, your home should feel as comfortable as the town itself. Cold, drafty rooms in winter and stuffy bedrooms on summer afternoons are the most common things we hear about here.
Landmarks & neighborhoods we serve
- Downtown San Anselmo
- San Anselmo Avenue
- Creek Park
- Robson-Harrington Park
- Sleepy Hollow
- Red Hill
Serving San Anselmo
Designed for San Anselmo Homes
San Anselmo is full of homes from the early and mid-1900s: craftsman bungalows, brown-shingle houses, and hillside homes with small attics and tight crawlspaces. Many still have an aging gas furnace and no cooling at all. Replacing that furnace with a heat pump adds cooling in the same project, and the whole system runs on electricity.
Where ductwork is limited or worn out, we either rebuild the ducts properly or use ductless mini splits so we don't have to open up original walls and ceilings. We also check the electrical panel early, since some older homes need a panel upgrade before going all-electric.
Serving San Anselmo
Rebates and Permits in San Anselmo
Most San Anselmo homes get their electricity through MCE, with PG&E handling delivery. Depending on current funding, heat pumps and heat pump water heaters may qualify for MCE, TECH Clean California, or BayREN rebates. We check what's available and file the paperwork for you.
Permits for HVAC and water heater work go through the Town of San Anselmo, and we handle the permit and inspection.
Serving San Anselmo
Why We Love San Anselmo
San Anselmo has a walkable downtown, a strong sense of community, and some of the most charming older homes in Marin. Upgrading them carefully, without losing what makes them special, is work we really enjoy.
Serving San Anselmo
Water heaters in San Anselmo
Need a new water heater in San Anselmo? Green Core installs and replaces heat pump, tankless, gas, and electric water heaters, with same-day replacement when our schedule allows. Gas and electric tank installs start at $2,850.
For the lowest running cost, a SANCO2 or GE GeoSpring heat pump water heater is hard to beat, and San Anselmo homes served by MCE may qualify for rebates on top of TECH Clean California and BayREN programs, depending on current funding. Want endless hot water instead? We install Navien tankless units, sized to your household.
Older San Anselmo homes often have a gas water heater in a basement or lower-level utility area. We check access, venting, and your electrical panel before recommending a heat pump model.
Our services
HVAC services in San Anselmo
Green Core provides the following services throughout San Anselmo and surrounding Marin County areas:
Heating & cooling in San Anselmo
Heat Pumps
Heat pumps are one of the most energy-efficient ways to heat and cool your home — reliable year-round comfort in a single, all-electric system.
Learn moreAir Conditioning
A properly designed AC system keeps your home cool and efficient — professional installation, repair, and replacement tailored to your home.
Learn moreFurnaces
Expert furnace installation, repair, and replacement — consistent comfort, improved efficiency, and long-term reliability.
Learn moreMini Splits
Ductless mini splits deliver targeted comfort with zoned control — ideal for additions, garages, older homes, and uneven-temperature spaces.
Learn moreDuct Work
Improve airflow, eliminate inefficiencies, and enhance comfort with ductwork installation, repair, and replacement done properly.
Learn moreHarvest Thermal
Harvest Thermal combines heat pump water heating with smart controls to optimize energy usage — lower operating costs and improved efficiency.
Learn more
Water heating in San Anselmo
Water Heaters
Heat pump, tankless, gas, and electric water heater installation, repair, and replacement across Sonoma and Marin. Gas and electric tank installs start at $2,850.
Learn moreHeat Pump Water Heaters
SANCO2 and GE GeoSpring heat pump water heaters installed across Sonoma and Marin. Lower bills, cleaner hot water, and help with rebates.
Learn moreTankless Water Heaters
Navien tankless water heater installation, repair, and yearly maintenance in Sonoma and Marin. Endless hot water in a compact, wall-mounted unit.
Learn moreGas Water Heaters
Gas tank water heater replacement and repair in Sonoma and Marin, with same-day replacement when our schedule allows. Tank installs start at $2,850.
Learn moreElectric Water Heaters
Electric tank water heater replacement and repair in Sonoma and Marin, plus heat pump upgrades that can cut water heating costs.
Learn more
San Anselmo FAQ
Questions from San Anselmo homeowners
Can you add air conditioning to an older San Anselmo home?
Yes. The most common way is to replace the old furnace with a heat pump, which heats and cools from one system. For homes without good ductwork, ductless mini splits add cooling room by room without major construction.
Are there heat pump rebates in San Anselmo?
Most San Anselmo homes are MCE customers. Depending on current funding, you may qualify for rebates through MCE, TECH Clean California, or BayREN. We check what applies and handle the paperwork. The federal 25C tax credit ended for systems installed after December 31, 2025.
Will I need an electrical panel upgrade for a heat pump?
Sometimes. Many older Ross Valley homes have smaller electrical panels. We check your panel during the estimate and tell you up front if any electrical work is needed.
Do I need a permit for HVAC work in San Anselmo?
Yes. HVAC and water heater replacements need a permit from the Town of San Anselmo. We pull the permit and schedule the inspection.
Schedule HVAC service in San Anselmo.
Local crews, fast response, honest pricing. Usually same-day callbacks.