Load calculation
Equipment sized to the house, its windows and insulation, not to the old unit's label.
Adding or replacing AC in Palo Alto? HAXX installs heat pumps that cool and heat, sized to the home and placed to meet the City's setback and noise rules.
Serving Crescent Park, Old Palo Alto, Professorville, Midtown, Barron Park and Greenmeadow and the rest of Palo Alto. 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.
Palo Alto's proposed 2026-2028 energy code update addresses AC replacements in existing homes, pairing them with a heat pump or other efficiency measures. Confirm what applies with Development Services.
A heat pump cools like an AC and can also retire the gas furnace, which opens up CPAU heat pump rebates.
Many Crescent Park, Professorville and Eichler homes never had central air. Ducted heat pumps or mini-splits add it without new gas equipment.
Palo Alto limits outdoor unit noise and placement. HAXX selects equipment and locations that fit the permit.
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.
Palo Alto's 2026-2028 code update proposed that an AC replacement come with a heat pump or other efficiency measures. HAXX will confirm the current rule for your permit.
Yes. HAXX pulls the permit, using the City's instant heat pump permit when the project qualifies, and meets the inspector.
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.
