Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Switching a Piedmont home from a gas furnace to a heat pump? HAXX sizes the system to the house, checks the panel and handles the city permit.
Serving Lower Piedmont, Upper Piedmont, Baja Piedmont, the Sea View Avenue area and Estates Drive and the rest of Piedmont. 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.
Piedmont runs its own home electrification rebates, and its updated reach code lists a gas-furnace-to-heat-pump swap as a high-impact measure for larger remodels.
Since September 2026, Piedmont's heat pump HVAC rebate is limited to low- and moderate-income households, and it requires a multi- or variable-speed, Energy Star unit. Check current amounts with the city.
Under Piedmont's 2025 reach code, a remodel of $135,000 or more needs one high-impact item, such as a heat pump, or two menu items. The energy menu applies once the state approves it; confirm with the city.
Big 1920s houses often need two systems or a mix of ducted and ductless zones. HAXX plans equipment around floors, ducts and attic access.
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.
As of September 2026, low- and moderate-income households (at or below 120% of Alameda County median income). Rebates are first-come, first-served, so check the city's Electrification Rebates page first.
Yes. HAXX files the application through the city's eTRAKiT portal and meets the inspector. City rebate applications are due within four months of permit issue.
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.
