Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Planning a heat pump in Portola Valley? HAXX sizes the system to the house and lot, checks the panel first and files the Town permit by email.
Serving Westridge, Central Portola Valley, Portola Valley Ranch, Alpine Hills, Brookside and Woodside Highlands and the rest of Portola Valley. 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 Town of Portola Valley adopted a reach code in 2022 that touches air conditioning and panel work in existing homes. WestLight Energy (formerly Peninsula Clean Energy) supplies electricity here and offers rebates for replacing gas heating.
Under the Town's 2022 reach code, a new or replacement AC condenser must be a heat pump, so the gas furnace can be retired later. Confirm current requirements with Planning & Building.
The Town's FAQ says a failing furnace or water heater can be replaced like for like. A heat pump is encouraged, not required, for those swaps.
WestLight Energy lists rebates for heat pump HVAC that replaces gas heating. Amounts and terms change, so confirm with WestLight before you sign.
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.
Under the Town's 2022 reach code, replacing or adding an AC condenser calls for a heat pump. HAXX confirms the current rule with the Town before quoting.
The Town takes building applications by email at planbuild@portolavalley.net. HAXX prepares and submits the mechanical and electrical paperwork 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.
