Load calculation and sizing
Equipment is sized to the house, not to the old furnace label. Oversized systems short cycle and cost more.
Swapping a gas furnace or old AC for a heat pump in Novato? HAXX sizes the system, checks the panel and files the permit through the city portal.
Serving San Marin, Ignacio, Hamilton, Bel Marin Keys, Indian Valley and Old Town and the rest of Novato. 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.
Novato homes get electricity generation from MCE and delivery from PG&E. MCE lists heat pump rebates; confirm eligibility with MCE.
MCE lists heat pump HVAC rebates scaled to home size. Confirm current amounts with MCE before signing.
Ranch homes with working attic ducts can take a ducted system. Additions, older homes and spaces without ducts often suit ductless heads.
BAAQMD rules will stop sales of new gas furnaces that do not meet its zero-NOx limit starting in 2029. Existing furnaces can keep running and be repaired.
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“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.
We found no city rule that forces a heat pump in an existing Novato home. Confirm with the Novato Building Division, since codes are updated.
MCE lists heat pump HVAC rebates. Marin County's Electrify Marin rebate has closed to new applications. Confirm eligibility with MCE.
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.
