How long does an oil-to-gas conversion take?

The equipment swap itself is usually a day or two once the gas line is in. The utility's schedule for the service line is the variable — that can run weeks, so plan ahead of heating season.

Do I have to remove my oil tank?

Underground tanks must be properly decommissioned — pumped, cleaned, and filled or removed. Aboveground tanks are simpler. Either way, get documentation — buyers and insurers ask for it.

Is gas actually cheaper than oil?

Historically yes in this region, often substantially per BTU — but fuel prices move. The more reliable savings case is converting when your oil equipment is already due for replacement anyway.

Oil to Gas Conversion: What It Involves & When It Pays

What the conversion actually involves

Gas service line — the utility runs the line from the main to your meter location
New equipment — gas furnace or boiler sized to the house, not just swapped for the old unit's rating
Oil tank decommission — underground tanks get pumped, cleaned, and filled in place or removed; aboveground tanks come out entirely
Chimney liner — most older masonry chimneys need a liner for a gas appliance. Skipping it is a real safety issue, not an upsell
Permits and inspection — township permits on both the gas work and the tank

What it costs — honestly

Every house is different, but as a working range: a straightforward furnace swap with gas already inside the house lands well under five figures; adding the service line, an underground tank, and a chimney liner can add several thousand more. The tank is the wildcard — an underground tank that has leaked turns into a soil-remediation conversation. Get it tested before you sell the house, not during the sale.

When the conversion pays

Your oil furnace or boiler is 20+ years old or failing anyway — you were going to spend the money regardless
Fuel costs: oil has run meaningfully above gas per BTU for years in this region
You want the option of gas appliances and a cleaner basement — no tank, no smell, no delivery scheduling

When staying on oil is the smarter move

A mid-life oil system running well — payback on the conversion takes years at that point
No gas on the street, or the service-line cost is heavy
A heat pump may be the better spend anyway — especially paired with the existing oil system as backup. See our heat pump guide

What we see around here

Oil heat is still common in the older boroughs — Pottstown, Boyertown, the older Berks stock, and pockets of Bucks. A lot of the equipment we service is 20–30 years old and still running. We keep those systems alive when that is the right call, and when it is not, we show the numbers both ways instead of pushing the bigger job.

Ready to talk it through? Call or text (267) 227-8115, or see our boiler and furnace services.

Thinking about switching from oil to gas?