Converting from Gas to Electric Heat: Rebates, Panel Requirements, and What to Expect

Five years ago, gas-to-electric conversions were a niche request. Today they are one of the most common projects we install across King, Pierce, and Snohomish counties. The drivers are stacked: utility rebates that favor heat pumps, federal tax credits, a state energy code steadily steering new construction electric, and homeowners who simply want one fewer combustion appliance in the house. If you are considering the switch, this article walks through the whole project the way we walk customers through it at the kitchen table — including the parts other contractors gloss over.

What a conversion actually involves

A gas-to-electric heating conversion replaces your gas furnace with an electric heat pump — either a ducted system using your existing ductwork or a ductless multi-zone system if your home has none. The heat pump handles both heating and cooling, so most conversions end with more capability than the home started with.

The full scope typically includes: removing and disposing of the gas furnace, installing the outdoor heat pump and indoor air handler or coil, running new dedicated electrical circuits, installing backup electric heat strips sized to your load, capping the gas line at the appliance (or coordinating full gas service disconnection if you are electrifying everything), sealing or adapting ductwork, mechanical and electrical permits, and full commissioning — refrigerant charge verification, airflow measurement, and controls setup. On a typical Puget Sound home this is a two-to-three-day project.

The electrical panel question — answer it first

The most important pre-purchase question in any conversion is whether your electrical panel can carry the new load. A ducted heat pump needs a dedicated 240-volt circuit, and backup heat strips can draw 30–60 amps on their own. Homes with 200-amp service almost always have room. Homes with 100-amp panels — common in houses built before the 1990s — are case by case: it depends on what else the panel feeds.

When a panel is tight, there are three honest paths. First, load calculations sometimes show more headroom than the breaker slots suggest — an NEC load calc is the real test, not a full-looking panel cover. Second, load-management devices can shed the backup heat automatically when other big loads run, keeping you legal on existing service. Third, a panel or service upgrade — a real cost, but one that also future-proofs the house for an EV charger or heat pump water heater. We evaluate your panel during the free on-site measure, before you sign anything, and price whichever path fits. Be wary of any conversion quote produced without someone opening your panel.

Rebates and credits: what is on the table

Incentives are the reason many conversions pencil out years sooner than expected, and Washington homeowners are better positioned than most. Depending on where you live, your electric utility — Puget Sound Energy or Snohomish County PUD for most of our service area — offers rebates for qualifying heat pump installations, with the largest amounts typically reserved for homes converting from electric resistance or fossil-fuel heat. Federal tax credits under the energy-efficiency provisions cover a percentage of qualifying heat pump costs up to an annual cap, and income-qualified electrification rebates continue rolling out at the state level.

Two practical warnings from the field. First, programs change: amounts, qualifying equipment lists, and funding windows move year to year, so treat every number you read online — including ours — as “verify before you buy.” We confirm current program terms as part of every proposal and handle the qualifying paperwork for you. Second, rebates follow specifications: the equipment usually must meet specific efficiency tiers and be installed by a licensed contractor with a permit. The cheapest possible install and the rebate-qualified install are often not the same project.

A realistic timeline, start to finish

Here is how the project actually flows. Week one: on-site measure, Manual J load calculation, panel evaluation, and a firm written proposal with rebate estimates. Week two: equipment ordering and permit submission — most Puget Sound jurisdictions turn mechanical permits around in days. Installation: two to three days for the typical conversion, and your home is never without heat overnight — we sequence the changeout so the old system runs until the new one is ready to carry the load. After install: inspection, rebate submission, warranty registration, and a walkthrough where you learn the thermostat and the filter schedule. Most conversions run four to five weeks door to door, or faster when a failed furnace makes it urgent.

Is your house a good candidate?

The best conversion candidates share a few traits: existing ductwork in reasonable condition (or a floor plan that suits ductless), a panel with headroom or a homeowner planning electrical upgrades anyway, and owners planning to stay long enough to bank the operating savings — though the added air conditioning and the “fully electrified” line in a future listing carry value on their own. Homes heating with oil or electric baseboard are the strongest cases of all; the operating savings there are immediate and large.

If you want a grounded starting number for your own conversion, our pre-estimate calculator asks about your fuel, ductwork, and panel situation and returns an honest planning range in about two minutes. From there, the free on-site measure answers every question in this article for your specific house — sized right, installed clean, priced straight.