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 for a heat pump in Milpitas? HAXX sizes the system, checks the panel and files the city permit, with rebate paperwork in mind.
Serving Sunnyhills, Calaveras Hills, Midtown, the Summitpointe and Spring Valley foothills, and the Milpitas Metro area near BART and the rest of Milpitas. 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.
Milpitas runs a Go Electric, Milpitas! program that adds city-funded bonuses to Silicon Valley Clean Energy rebates. The city lists up to $4,500 combined for heat pump HVAC.
The city lists a $2,500 Milpitas add-on for heat pump HVAC, for up to $4,500 with SVCE. Program funds are limited, so confirm current terms with the city and SVCE before signing.
Milpitas offers an ONL HP HVAC permit on eTRAKiT for replacing a gas furnace with a heat pump in the same spot, with a new circuit but no panel or duct change.
For heat pump jobs outside that online scope, the city asks for an Electric Panel Size Check form stating the existing or new panel size.
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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 VAV box repair at Great Mall in Milpitas: access above a suspended ceiling, equipment and the work in progress.
Great Mall · Milpitas
Explore recent projects
Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

American standard rooftop package unit.

Heat pump air handler service.

Lennox ac installation.

Compressor replacement.

Mitsubishi leak detection.
Milpitas residents can combine SVCE rebates with Go Electric, Milpitas! add-ons; the city lists up to $4,500 for heat pump HVAC and extra help for income-qualified households. Verify current amounts before you sign.
Yes. HAXX files through the city's eTRAKiT portal when the job fits an online permit type, or submits a full application to the Building Permit Center otherwise, and attends 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.
