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Oil ran $25.15 per million Btu in Pennsylvania in 2024. Most homes around Somerset heat with oil, and a boiler here runs for months once the cold sets in. That combination means the efficiency rating on the unit you install matters more than it would somewhere milder. A boiler that wastes fuel burning through a hard Somerset winter will show it on every delivery. The install itself is one cost. What that boiler burns to keep your house warm all winter is another, and it keeps adding up long after the install is done.
Boilers here run September through May.
August is when to get yours installed, before the heat has to go on.
Somerset County falls in climate zone 5A, a cool zone where the heating load matters more than cooling. Any gas-fired hot water boiler installed here has to meet that standard: if it was built on or after January 15, 2021, it has to turn at least 84 percent of the gas it burns into heat over the winter. That rule sets a floor, not a ceiling, and it narrows what a contractor can legally install. Beyond the federal minimum, a federal tax credit is available on qualifying high-efficiency equipment. Ask what a given model qualifies for before you decide.
Ask what efficiency rating a boiler carries before you sign off on it. Oil at $25.15 per million Btu means a few points of efficiency are worth more here than somewhere with a mild winter, and that difference shows up on every delivery for as long as your boiler runs.
Find a contractorA contractor works out the right size by figuring how fast your house loses heat on the coldest days, room by room, counting windows, walls and ceiling. The old boiler is not a safe guide. It may have been oversized from the day it went in, which was common practice for years.
A boiler too big for the house turns on and off more than it should, and that short cycling wears out parts faster and never lets the house settle at a steady temperature. A boiler too small runs flat out in the coldest weather and still can't keep up, so the rooms farthest from it stay cold.
Ask what fuel each system quote assumes, because a boiler built for gas and one built for oil are different machines inside, not just a different burner bolted on. Ask about the venting each option needs. Some boilers vent through a chimney, others through a sidewall, and that changes what a contractor has to install alongside the unit itself. Ask whether the quote is for a cast iron boiler or a steel one, since that affects how long it tends to last and how it handles being fired up and down. Ask what the boiler's standby loss is, meaning how much heat it bleeds off when it isn't actively firing, because two units with the same efficiency rating can lose different amounts of heat just sitting there between cycles. And ask who is sizing the system and how, since a quote that skips the heat loss calculation is a guess dressed up as a number.
Nine months of heat a year is a long haul for any boiler. Somerset County runs its heat from September through May, which leaves barely a summer in between before it starts again. A boiler sized and installed right for this house will carry that load without strain. One sized wrong just runs longer than it should every one of those nine months, and it shows. Somerset County saw 27 winter storms between 2015 and 2024, and a storm is exactly when you need the system holding steady, not fighting the house. Buying on price alone here means betting against the weather.
