HVAC Installation in Chambersburg, PA
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Franklin County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of the year, your system is working
In Chambersburg, heat runs October through May, eight months, with winter nights averaging 24°F. Cooling takes over June through August, when afternoons average 84°F. Only eleven months are spoken for, but a new system still has to handle both ends, the deep cold and the summer heat, not just one.
51.9% of homes here heat with electricity, so a furnace or heat pump that can't keep up in the cold reaches straight into the house. The power behind it isn't always steady either. Over the past ten years the area has seen 16 winter storms and 78 damaging wind events, and across Pennsylvania, 15% of households went at least 24 hours without power in 2024. Whatever gets installed needs to hold up through that, not just through a calm afternoon.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 24°F
- the average winter night it heats against
- 84°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Pennsylvania requires contractors to register with the state.
That registration puts the business on file with the Bureau of Consumer Protection. Nobody tested the contractor's trade knowledge to get it, and no license backs it up. Pennsylvania also does not let cities or townships add their own HVAC license on top, so this registration is the only state record you get anywhere in the state.
For a job like this, the protection that matters comes from the local building office, not from that registration. In most cities and counties, a new furnace, air conditioner or heat pump needs a permit before the work starts and an inspection once it's in, and that inspection is what checks the gas connections, the wiring and the venting were done right.
Source: Pennsylvania General Assembly
- When should I replace my HVAC system?
- Replace it when the system is old enough or worn enough that repairs no longer make sense, not on a fixed schedule. Watch for signs like frequent breakdowns, uneven heating or cooling from room to room, or a furnace and AC that keep needing the same repairs. Homes here need heat from October through May and cooling in June through August, so with only a few weeks of mild weather to spare, a system on its last legs can leave you without heat when it's 24 degrees outside. If your system is old and a contractor tells you a repair is a temporary fix, that's usually the point to plan for replacement rather than wait for a breakdown.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together is usually the better route, but it depends on the condition of each one. A furnace and AC installed at the same time are matched to work together, and replacing only one can mean pairing new equipment with an old blower or coil that was never designed for it. That mismatch can mean the new unit doesn't perform the way it should. If one system is much newer than the other, a contractor can tell you whether it's worth keeping or whether replacing both now makes more sense.
- What happens during an HVAC installation?
- A contractor removes the old furnace, air conditioner, or both, and sets the new equipment in place, connecting it to your ductwork, gas or electric line, refrigerant lines, and thermostat. Before that, they size the equipment for your house, since a furnace or AC that's too big or too small for the space won't heat or cool it evenly. Once it's installed, they test it, check refrigerant charge and airflow, and make sure the thermostat is talking to the system correctly. The whole job usually wraps up with a walkthrough so you know how to run the new system and what maintenance it needs.