Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Swapping a gas furnace and AC for one heat pump in Danville? HAXX sizes the system to the house, checks the panel and applies for the Town permit.
Serving Montair, Greenbrook, Sycamore, El Cerro, Magee Ranch and the Hartz Avenue downtown and the rest of Danville. 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.
Danville homes buy electricity from MCE, with PG&E delivering it. MCE's heat pump rebate scales with home size, which matters in a town with many large houses.
MCE lists up to $400 per 500 square feet for heat pump heating and cooling for eligible owner-occupied single-family homes. Confirm eligibility with MCE before installation.
Danville summers are long and dry with hot afternoons. HAXX runs a load calculation so cooling capacity is right, not just heating.
Residential HVAC work in Danville is permitted through the Town's online permit portal, using its furnace and AC submittal requirements. HAXX handles the application and inspection.
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.
A closer look at recent heating and cooling work by HAXX.

On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projects
Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.

Lennox ac installation.

Compressor replacement.

Mitsubishi leak detection.

Leaking coil replacement.
MCE lists up to $400 per 500 square feet for eligible single-family homes owned and lived in for at least 12 months. Verify current terms with MCE first.
Yes. MCE's terms bar adding solar, batteries or EV charging for 12 months after the heat pump is installed, so plan the order of projects.
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.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
