Load calculation
Equipment sized to the house, its windows and insulation, not to the old unit's label.
Adding or replacing air conditioning in Hercules? HAXX installs central AC, heat pumps and mini-splits with a load calculation and a City permit.
Serving Victoria by the Bay, Village Park, Hercules by the Bay, Olympian Hills, Foxboro and the Waterfront and the rest of Hercules. 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 Hercules homes from the 1970s and 1980s were built without central air. Adding cooling now is usually a question of ducts, panel capacity and where the outdoor unit can go.
A heat pump costs little more than an AC of the same size and also heats. Many Hercules owners choose one when the furnace is aging too.
Homes with a forced-air furnace can usually take a ducted system. HAXX inspects the ducts for leaks and sizing before quoting.
Townhome HOAs and narrow side yards limit placement. HAXX plans the location, line set route and clearances before install day.
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. The City of Hercules requires mechanical and electrical permits for a new system, followed by an inspection. HAXX handles both.
Most replacements take one to two days. A new system with duct changes can take longer, plus the City inspection.
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.
