Load calculation
Equipment sized to the house, its windows and insulation, not to the old unit's label.
Adding cooling to a Berkeley home? HAXX installs heat pumps that cool in summer and heat in winter, sized to the house, with permits and inspection.
Serving Elmwood, North Berkeley, Thousand Oaks, Claremont, Westbrae and the Berkeley Hills and the rest of Berkeley. 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.
Many Berkeley houses were built without air conditioning. A heat pump adds cooling and can take over heating from an old furnace in the same project.
A heat pump costs little more to plan than a cooling-only unit and earns full credit under Berkeley's BESO time-of-sale rules.
Wall, ceiling or slim-ducted heads suit houses with no duct runs, including converted attics and upstairs bedrooms.
The city notes that a gas shut-off valve is required when a mechanical or plumbing permit is issued. HAXX checks for it during the estimate.
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. HAXX applies through the city's Permits Online portal and meets the inspector.
Yes. Ductless or slim-ducted heat pumps are common in Berkeley homes without duct systems.
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.
