Ontario, San Bernardino County
Electrical Panel Upgrades in Ontario, CA
Ontario homeowners are running into a hard limit: older panels sized for a simpler time cannot handle today's EV chargers, heat pumps, or rooftop solar systems. When a 100-amp panel is splitting its capacity between a new EV charger and a heat pump, circuits trip and equipment underperforms. Build Bright Home Solutions upgrades residential and multi-family panels to 200 amps and above, adds subpanels where needed, and positions your home for full electrification. We bring mechanical, electrical, and building-envelope upgrades across Southern California, backed by 26 years of industry experience. Whether you are planning ahead for an EV purchase or ready to pull permits now, our team moves with the speed and authority Ontario homeowners need to get capacity online without delay.
200A Panel Upgrade
- Permit & Inspection Included
Starting price for a typical single-system project in our service area. Final quote confirmed in writing after a free in-home assessment.
Starting at
$4,900
Electrical Panel Upgrades in Ontario
Ontario sits in San Bernardino County with a housing stock that leans heavily on older multi-family buildings and bungalow-era single-family homes. Many of these properties were wired decades before EV charging or heat-pump HVAC entered the picture, leaving panels that simply cannot support modern electrification loads. Dense lot layouts also create rooftop access constraints that make coordination between solar installers and electrical contractors important from the start. Year-round demand for cooling in the Inland Empire means heat pumps are a practical upgrade for many households, but adding that load to an undersized panel creates real safety and performance concerns. Upgrading to a 200-amp or larger service, and adding subpanels where the layout demands it, solves the capacity problem at the source and opens the door to every electrification upgrade a homeowner in Ontario might be planning.
Panel capacity is usually the first thing to check here. It decides whether a heat pump or an EV charger is a simple job or a service upgrade.
What that involves
- Main panel upgrades to 200A and above for residential and multi-family properties in Ontario
- Subpanel installation to distribute capacity to garages, ADUs, or additions
- Dedicated circuits sized for EV chargers, heat pumps, and large appliances
- Coordination with solar and HVAC contractors to align electrical capacity with full electrification plans
- Permit-ready work performed under California Contractor License 1056740
Ontario
Electrical Panel Upgrades questions from Ontario
- How do I know if my Ontario home needs a panel upgrade?
- Common signs include breakers that trip when you run multiple appliances, a 60-amp or 100-amp main breaker that leaves little room for new loads, or an electrician or utility company telling you the existing service cannot support an EV charger or heat pump. An on-site assessment will confirm current capacity and what size service your planned upgrades require.
- What size panel upgrade is right for my home?
- Most Ontario homes moving toward electrification land on a 200-amp service as a practical baseline. Homes with larger square footage, multiple EV chargers, or plans for battery storage may benefit from 320-amp service or a combination of a 200-amp main panel and one or more subpanels. The right answer depends on your current load and your future upgrade plans.
- Will the utility need to get involved in my panel upgrade?
- Yes. Upgrading the main service panel typically requires a utility disconnect and reconnect coordinated with Southern California Edison. We manage that coordination as part of the project so you are not left chasing the utility on your own.
- How long does a panel upgrade take in Ontario?
- A straightforward 200-amp main panel upgrade on a single-family home is usually completed in one day once permits are in place. Projects involving subpanels, trenching, or utility scheduling may take longer. We give you a realistic timeline before work starts so you can plan accordingly.
- Can Build Bright handle the electrical upgrade and the HVAC or EV charger installation together?
- Yes. Build Bright Home Solutions covers mechanical, electrical, and building-envelope upgrades, which means we can sequence a panel upgrade alongside a heat pump installation or EV charger rough-in without handing you off to a separate contractor for each trade.
Electrical Panel Upgrades in Ontario?
Call (818) 915-1604 and tell us about the building.