Ice-covered and snow-laden tree branches in the foreground of a snowy residential street, with a house visible in the background.

Furnace Installation in Bristol, PA

A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Bucks County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An unfinished basement featuring a grey forced-air furnace with metal ductwork, concrete block walls, exposed wooden joists, and a single hanging bare bulb.

Bristol asks a lot of a furnace, eight months a year

Winter nights here average 24°F, and homes need heat from October through May. That's eight months a year your furnace has to work. It has to be built for that kind of run time, not just a cold snap now and then.

Any new gas furnace installed has to meet 80 percent AFUE, the federal minimum since November 2015. Power is worth planning around too. In 2024, 15% of Pennsylvania households lost power for 24 hours or more, and this area has seen 40 winter storms and 235 damaging wind events over the past ten years. A furnace that comes back on by itself when the power returns matters here.

8 months
October through May, your furnace is on duty
24°F
the average winter night it heats against
80% AFUE
the federal minimum any new unit must meet
Isometric cutaway illustration of a single-story house with a dark shingled roof, showing interior rooms with furniture, a ducted air distribution system, a tall vertical flue pipe, and a gray furnace unit outside the wall.
Your furnace works hardest from November through March.

NOAA nClimDiv, 1991–2020 normals

An unfinished basement containing a metal furnace with ductwork, exposed wooden joists on the ceiling, cardboard boxes, a coiled cable, and a single hanging incandescent bulb.

A high-efficiency gas furnace would save about $120 a year to run in Bucks County compared with a gas furnace.

  • A high-efficiency gas furnace$570 a year
  • A gas furnace$690 a year

Estimates for a typical Bucks County home, from EIA household energy data, Pennsylvania fuel prices and NOAA climate normals. Your home will differ.

Pennsylvania requires contractors to register with the state.

That registration puts the business on file with the state and nothing more. Pennsylvania does not test contractors on gas or heating work before they take a registration number, and it keeps no record of who passed what. Cities and towns in Bucks County cannot require their own HVAC license on top of that, so the registration is the only state-level record that exists for whoever installs your furnace.

What stands behind the work itself is the permit and inspection most local building offices require for a furnace installation. That inspection is what catches a bad gas connection or a flue that was not run right, the part of this job where a mistake is dangerous rather than just inconvenient. In Bucks County, 37.7 percent of homes heat with gas, so this is the kind of check the local building office is set up to do.

Source: Pennsylvania General Assembly

What size furnace does my house need?
It depends on your square footage, your insulation, your windows, and your ceiling height, so there's no single number that fits every house. A contractor works this out with a load calculation, not a chart based on home size alone. Two houses the same size on the same street can need different sized furnaces if one has more windows or less insulation. Getting the size right matters here, since your furnace runs from October through May and an undersized or oversized unit will struggle or short-cycle through most of the year.
How do I know it's time to replace my furnace?
Age is the first sign. Most furnaces last 15 years, and if yours is near that mark or past it, repairs start becoming a losing bet. Watch for rooms that won't heat evenly, a furnace that cycles on and off more than it used to, or a gas bill that keeps climbing without a reason. If a repair tech has been out more than once this winter for the same unit, that's usually the point to start pricing a replacement instead of another fix.
Is a high-efficiency furnace worth it?
For a house here, it usually makes sense. Your furnace runs eight months a year, October through May, with winter nights averaging 24°F, so a more efficient unit has a lot of hours to earn back the difference. Every new gas furnace sold today has to reach at least 80 percent AFUE by law, and high-efficiency models go beyond that minimum. A contractor can walk you through the specific models and what the efficiency gap looks like for your house.