Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Replacing a gas furnace or old AC in Petaluma? HAXX sizes the heat pump, checks the panel and files the city permit that Sonoma Clean Power rebates require.
Serving Oakhill-Brewster, the A Street Historic District, Downtown, Payran, West Petaluma and the east side and the rest of Petaluma. 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.
Sonoma Clean Power lists a $1,000 rebate for a qualifying heat pump and higher support for CARE and FERA households. The rebate depends on a finalized City of Petaluma permit.
SCP sets SEER2 minimums that differ for ducted, single-zone ductless and multi-zone systems, and dual-fuel systems do not qualify. HAXX picks equipment that meets them.
Petaluma asks for a site plan showing that a new residential heat pump or AC meets setback rules. HAXX prepares it with the permit application.
In the Oakhill-Brewster, A Street and downtown districts, nearly all exterior work needs some level of design review. HAXX plans the condenser location with that in mind.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“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.”
“Our commercial building had several HVAC problems, and their team carefully diagnosed each unit, explained the available options, and never pressured us into unnecessary replacements. They worked hard to repair what could be repaired and kept us informed throughout the process.”
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.
SCP lists $1,000 for a qualifying heat pump and up to $3,500 for hydronic systems that also heat water. CARE and FERA customers can get more. Apply within SCP's deadline after the permit is finaled, and confirm current terms with SCP.
Yes. HAXX applies through the city's online Permits & Planning Hub, includes the site plan and meets the inspector.
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.
