Load calculation
A written load calculation of existing and planned appliances, so you know whether you need more capacity at all.
Atherton panel upgrades and service changes for heat pumps, EV chargers, pools and additions, with Town permits and PG&E coordination.
Serving Lindenwood, West Atherton, Lloyden Park, Atherton Oaks and West of the Alameda and the rest of Atherton. Share your address to confirm availability.

Most panel projects start with a heat pump, EV charger, induction range or remodel. HAXX begins with your real electrical load and only upgrades what the numbers require.
A written load calculation of existing and planned appliances, so you know whether you need more capacity at all.
Replacing outdated, full or recalled panels, including Zinsco and Federal Pacific.
Coordinating the utility, meter and service equipment when the home needs more power from the street.
Adding a subpanel for a garage, ADU or new circuits when the main panel is out of space.
Smart panels and circuit-sharing devices that can avoid a service upgrade in some homes.
HAXX handles the permit, the inspection and the PG&E work order.
Atherton's reach code applies when a panel is upgraded: the new panel needs enough capacity for electric-ready appliances and reserved space for Level 2 EV charging. Planning it once avoids rework.
HAXX totals existing loads, pool equipment, HVAC and planned additions before recommending a service size.
Reserved breaker space and capacity for EV charging and electric-ready circuits are designed into the new panel.
WestLight Energy (formerly Peninsula Clean Energy) lists a panel upgrade rebate, one per electric account. Confirm terms first.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“Recently, my dishwasher stopped working, and they discovered it was actually an outlet issue. Not only did they diagnose it quickly, but they also fixed the outlet—saving me from calling an electrician. Reliable, professional, and skilled at handling both appliances and electrical issues.”
“I purchased a couple of ceiling fans and was reluctant due to how old my house was with old wiring so I wanted someone professional and trustworthy. They have been both!”
“Prompt and professional - they helped run a new thermostat wire through a wall and crawl space.”
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 electrical 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
Main panel installation.

Main panel upgrade.

Main panel replacement.

Span smart panel installation.

Subpanel installation.

Subpanel and new circuits.

Zinsco subpanel replacement.

Basement subpanel and circuits.
Yes. HAXX applies to the Town of Atherton Building Department, coordinates the PG&E disconnect and reconnect and meets the inspector.
The upgraded panel and service must have capacity for electric-ready appliances and reserved space for EV charging. HAXX designs the panel to meet it.
Not always. A load calculation shows whether your current service can carry the new appliances, sometimes with load management. HAXX recommends an upgrade only when the numbers require it.
The panel swap itself is usually one day. Permits and utility scheduling for service upgrades can add several weeks, so plan early.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
