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 AC or both in San Jose? HAXX sizes the heat pump to your home, checks the panel first and handles permits through SJPermits.
Serving Willow Glen, Cambrian, Almaden Valley, Evergreen, Berryessa and West San Jose and the rest of San Jose. 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.
San Jose did not adopt a rule forcing heat pumps when an AC is replaced, so it is your choice. Rebates and future air-quality rules still make heat pumps worth pricing.
San José Clean Energy's EcoHome program lists rebates for heat pump HVAC and heat pump water heaters. Amounts change, so confirm before you sign.
Bay Area Air District rules taking effect in 2029 will make new gas furnaces much harder to buy. A heat pump now avoids that decision later.
Many San Jose homes from the 1950s to 1970s still have 100-amp service. HAXX checks the load before recommending any panel work.
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. Projects in San Jose are marked with the city.

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.

American standard rooftop package unit.

Lennox ac installation.

Heat pump air handler service.

Compressor replacement.

Mitsubishi leak detection.
San José Clean Energy's EcoHome program lists rebates for heat pump HVAC and water heaters. Eligibility and amounts change, so verify with SJCE.
Yes. HAXX files the mechanical and electrical permits with the City of San Jose and schedules the inspection.
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.
