HVAC Installation in Murrysville, 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 Westmoreland County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of the year, one system carries the load
In Murrysville a new system works almost year round. Heat runs October through May, eight months, with winter nights averaging 23°F. Cooling picks up June through August, when afternoons average 81°F.
A furnace sized for those nights has to hold its own on the coldest ones, not just the average. Most homes here heat with gas, and whatever replaces that furnace has to meet the federal minimum efficiency rating now in place. On the cooling side, three months is short, but 81°F afternoons still call for a system sized to keep up, not one running flat out to catch up.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 23°F
- the average winter night it heats against
- 81°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 and nothing more. Nobody tested this contractor's HVAC knowledge to get that number, and no state board is grading the work. Westmoreland County can't layer its own HVAC license on top of that either, since Pennsylvania doesn't let cities and towns require one. The registration tells you the business exists on paper. It doesn't tell you who's good at the job.
What stands behind this installation is the permit. In most cities and counties, putting in a new furnace, air conditioner or heat pump needs a permit from the local building office, and the work gets inspected once it's done. That inspection is what catches a bad gas connection or a system put in wrong, not the state registration. In Pennsylvania, the permit and inspection carry the weight a license would carry elsewhere.
Source: Pennsylvania General Assembly
- When should I replace my HVAC system?
- Replace it when repairs start costing more than they're worth or when the unit is old enough that another breakdown is only a matter of time. If your furnace is struggling to keep up on the coldest nights, or your system needs a repair every season, that's a sign to stop patching it. Heat is needed here from October through May, so a furnace that fails during those months leaves you without a good backup plan. A contractor can look at the age and condition of your system and tell you honestly whether it's worth repairing again.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together is usually the better move. A furnace and air conditioner installed at the same time are matched to work together, and a contractor can handle the ductwork and wiring for both in one job. If one unit is much newer than the other, there's no reason to replace the one that's still got years left in it. A contractor can look at the age and condition of both and tell you honestly whether pairing the work makes sense for your house.
- What happens during an HVAC installation?
- A contractor removes the old furnace or air conditioner, sets the new unit in place, and connects it to your ductwork, gas line or refrigerant lines, and electrical supply. For a furnace, that includes venting it correctly so exhaust gases leave the house safely. For an air conditioner, it means connecting the outdoor unit to the indoor coil and charging the system with refrigerant. Once everything is connected, the contractor tests the system, checks airflow, and confirms it's running the way it should before calling the job done.

