Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Replacing a furnace, an old AC or both? HAXX plans and installs heat pumps across nine Bay Area counties, from Sonoma and Napa to Santa Clara County, sized to the house and checked against your electrical panel first.
Serving the nine-county SF Bay Area, from Sonoma and Napa to Santa Clara County. Share your address to confirm availability.

A heat pump replaces a furnace and AC with one system for heating and cooling. Good results come from sizing, layout and electrical planning done before equipment is ordered.
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Keep existing ducts when they are in good shape, or go ductless where ducts are missing, leaky or impossible to run.
HAXX electricians review the panel and service before the install, so a surprise panel upgrade does not appear mid-project.
Mitsubishi Electric and American Standard systems, among others, matched to the home and budget.
HAXX pulls the mechanical and electrical permits and meets the city inspector.
We point you to the rebates your address qualifies for and provide the equipment documentation programs ask for.
The equipment is the same everywhere. The rebates, utility programs and city rules are not, so HAXX plans each install around your address.
Silicon Valley Clean Energy serves Mountain View, Sunnyvale, Cupertino, Campbell, Los Gatos, Saratoga, Los Altos, Milpitas and other cities. San José Clean Energy serves San Jose. Santa Clara has Silicon Valley Power, Palo Alto has its own city utility, and Fremont is served by Ava Community Energy. Each lists its own heat pump programs.
Some cities go further than state code. In Mountain View, a single-family home that replaces its AC must install a heat pump; San Jose leaves that choice to the owner. HAXX checks the rules for your address.
Bay Area Air District rules taking effect in 2029 will limit new gas furnace sales. Choosing a heat pump now avoids a forced decision later.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“Their technician was professional, honest, and took the time to explain the problem and the repair process clearly. Instead of pushing for an expensive replacement, they repaired our HVAC system and helped us save a significant amount of money. The work was completed carefully, and our air conditioner is now working well.”
“Thorough diagnostics of A/C system, identified and repaired the issue quickly!”
“Service was performed well and on time. Service person was highly skilled and provided easy to understand options to deal with the issue. Price for diagnostics was reasonable and easy to pay online.”
Existing equipment, home layout and what you want to improve.
Sizing, airflow, equipment placement and electrical needs.
Options, exclusions, permit requirements and any eligible incentives.
Confirm equipment, scheduling and handover details with HAXX.
Yes. Bay Area winters are mild, and correctly sized heat pumps heat comfortably through them. Sizing and duct condition matter more than the brand.
Most single-system replacements take one to three days on site. Permits, equipment lead times and any electrical work add to the overall timeline.
Most Bay Area cities have utility or city programs. Which ones apply depends on your utility and address. HAXX points you to the programs that fit and provides the paperwork they ask for.
Yes. HAXX installs heat pumps across the nine-county SF Bay Area, from Sonoma and Napa to Santa Clara County.
FIND YOUR CITY
Pick your city to see every HAXX service available there, with local rebates, permits and rules.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
