Panel Upgrades in Arvada, CO: Heat Pumps and EV Chargers

Arvada is one of the Denver metro's best candidates for home electrification. Its 1960s and 1970s ranch homes, split-levels, and brick two-stories sit at around 5,380 feet—cool enough to make a cold-climate heat pump shine in winter, warm enough that the same system handles summer cooling without a second unit. But there's a catch many homeowners don't find until mid-project: the electrical panel.

A heat pump needs a dedicated 240-volt circuit. A Level 2 EV charger needs another one. Add an electric dryer, an electric range, and a water heater, and the 100-amp service that looked fine in 1972 is suddenly undersized for the home you're trying to electrify. Our electrical upgrade services in Arvada and Jefferson County are built for homeowners navigating exactly this transition—and we handle the panel, the circuits, the permit, and the Xcel coordination in a single visit.

Why So Many Arvada Homes Need a Panel Upgrade

The City of Arvada's residential core was largely built between 1955 and 1985. During that era, 100-amp electrical service was the standard—and more than enough for gas appliances, incandescent lighting, and maybe one window AC unit. That math made sense in 1970. It does not make sense in 2026.

A modern cold-climate mini-split heat pump draws anywhere from 15 to 40 amps depending on capacity. A Level 2 EV charger on a 50-amp breaker pulls 40 amps continuously—as much power as three older window air conditioners running at the same time. Stack those on a 100-amp panel that already serves an electric range, electric water heater, and a washer and dryer, and you're routinely exceeding what the service can safely deliver. The result isn't always a tripped breaker. It's often nuisance trips at inconvenient moments, premature wear on the panel and service entrance, and an outright failure of the electrical inspection when you go to pull a permit for the heat pump or charger.

We see it regularly in Arvada: a homeowner ready to install a heat pump and an EV charger, only to discover at the estimate that the 100-amp panel is full and the service is already being pushed hard. The electrical upgrade isn't optional—it's a prerequisite.

What a Heat Pump Actually Requires Electrically

Every heat pump installation we do starts with a load calculation. For a single-zone Fujitsu XLTH cold-climate system serving a bedroom or living room, the typical requirement is a dedicated 240V/20A circuit. A larger multi-zone system with a higher-capacity outdoor unit may need a dedicated 240V/30–40A circuit. The key word is dedicated—the circuit can't share breaker space with other loads.

That means a new breaker slot in your panel. If your 100-amp panel is already full—and in most 1960s and 1970s Arvada homes it is—you can't add a breaker without removing something else or upgrading the panel itself. The upgrade path is almost always better than the workaround.

What an EV Charger Adds to the Load

A Level 2 home charger typically pulls 32 to 48 amps on a 240V circuit. That's 7.7 to 11.5 kilowatts of continuous draw—equivalent to running four or five window AC units simultaneously—for six to ten hours while the vehicle charges overnight. Xcel Energy's grid in Jefferson County handles the aggregate load without issue. The question is whether your home's individual service can.

When you combine an EV charger and a heat pump with electric cooking and an electric water heater, peak demand typically lands somewhere between 120 and 160 amps—well beyond 100-amp service. A 200-amp upgrade isn't a luxury at that point. It's the code-compliant minimum for the home's actual electrical load.

Permits and the Inspection Process in Arvada

Arvada falls under Jefferson County jurisdiction for residential electrical work, and all panel upgrades require a permit. We handle the permit application, schedule both the rough-in and final inspections, and coordinate directly with Xcel Energy for the utility-side work. Most upgrades are completed in a single day. The main outage window—while Xcel pulls and reinstalls the meter—typically runs two to four hours, and we schedule it to happen during our work day so power is restored well before evening.

One issue that bites homeowners who try to skip permits: Xcel will not energize a new meter base without a passed inspection and a finaled permit. That means unpermitted work can strand a heat pump or EV charger installation mid-project when the utility shows up and refuses to reconnect. We pull permits on every job, not just because it's required, but because the alternative costs more in the end.

Pairing the Panel Upgrade With Your HVAC or EV Project

The most efficient approach—in time and cost—is to handle the panel upgrade and the heat pump or EV charger installation together. When our crew is already on-site running a heat pump circuit, adding a charger circuit in the same visit adds relatively little to the project. We also size the new panel for the next ten to fifteen years: a future battery backup like a Tesla Powerwall, a second EV charger, additional electric appliance conversions. Doing it once and doing it right beats a second upgrade in five years.

Our electrical services cover the full scope from panel replacement through final sign-off. We serve Arvada, Lakewood, Westminster, Wheat Ridge, Golden, Broomfield, and the surrounding Jefferson and Adams county communities. Call 303-219-1000 for a free estimate—we'll tell you exactly what your panel can handle before you commit to a project.

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