Load calculation
Equipment sized to the house, its windows and insulation, not to the old unit's label.
Adding or replacing air conditioning in Foster City? HAXX installs heat pumps that cool and heat, with the permit, panel check and HOA steps handled.
Serving Sea Colony, The Islands, Lido Island, Beach Park, Bay Vista and Marina Point and the rest of Foster City. Share your address to confirm availability.

Central air conditioners and heat pumps that also cool. Every installation starts with sizing and a look at your ducts and electrical panel, not with a model number.
Equipment sized to the house, its windows and insulation, not to the old unit's label.
Compare a straight AC with a heat pump that also heats. In many homes the heat pump costs little more and replaces the furnace later.
Leaky or undersized ducts waste a new system. HAXX checks airflow before quoting.
Circuit, disconnect and panel capacity reviewed by HAXX electricians before install day.
American Standard and Mitsubishi Electric, among others, matched to the home and budget.
Mechanical and electrical permits pulled, city inspection scheduled.
Plenty of Foster City homes were built without central air. A heat pump adds cooling and can replace an old gas furnace in the same project.
Foster City has no local rule forcing a heat pump, but one outdoor unit that heats and cools often makes more sense than a new AC beside an old furnace.
Side yards between townhomes are narrow. HAXX plans unit location, clearances and line-set routes around the HOA's rules.
AC and heat pump installation is on Foster City's over-the-counter permit list, and HAXX can submit through eTRAKiT.
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
Outdoor heat pump installation.

Lennox ac installation.

Attic plenum resealing.

American standard rooftop package unit.

Heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.

Compressor replacement.
Yes. Foster City has not adopted a local reach code requiring heat pumps. HAXX will compare AC and heat pump options for your home.
Often. Many Foster City homes are in Planned Developments, and some HOAs require an approval letter and a screened enclosure. HAXX helps with the submittal.
Most replacements take one to two days on site. Permits, equipment lead times and any electrical work add to the overall timeline.
A heat pump cools exactly like an AC and also heats. If your furnace is aging, it is worth comparing both on the same estimate.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
