HVAC Installation in Washington, 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 Washington County will get in touch.
Tell us about the job
It takes about a minute.
Washington County asks a lot of a new system
Your new system needs to work eight months of the year here, October through May, then switch over and cool the house through June through August. Winter nights average 23°F, cold enough that a furnace runs long stretches to keep up. Summer afternoons average 82°F, so the AC has real work to do too, just for a shorter stretch.
Most homes here heat with gas, so a furnace has to be sized for those 23°F nights, not a mild fall evening. This area has seen 10 winter storms and 263 damaging wind events over the past ten years, and in 2024, 15% of Pennsylvania households lost power for at least 24 hours. If a furnace runs on electric ignition, no power means no heat, storm or no storm.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 23°F
- the average winter night it heats against
- 82°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 state, but nobody tested the contractor's work to get on that list. Pennsylvania also keeps cities and towns from layering their own HVAC license on top, so registration is the only state-level record you get anywhere in Washington County.
For an installation, the protection this job gets comes mostly from the permit process, not from that registration. In most cities and counties, putting in a new furnace or air conditioner needs a permit from the local building office, and the work gets inspected once it's done. That inspection is what checks the gas connections and wiring on the finished job, since the registration itself does not cover any of that.
Source: Pennsylvania General Assembly
- When should I replace my HVAC system?
- Replace it when repairs keep piling up or your furnace and air conditioner are working harder each year to do the same job. Age matters, but how the system has been running matters more. If your furnace is straining to keep the house warm through winter nights that average 23°F, that's a sign it's on its way out rather than just due for a repair. A contractor can look at the repair history and how the system is performing now to tell you whether another repair makes sense or if it's time to plan for new equipment.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, it often makes sense to replace them together, but it depends on the condition of each one. A furnace and air conditioner installed at the same time are matched to work with each other, which helps them run the way they were designed to. Homes here need heat for 8 months and cooling for only 3, so the furnace does most of the work and tends to wear first. A contractor can check both systems and tell you if one still has years left or if replacing them together is the better move.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace or air conditioner in place, and connects it to your ductwork, gas line or electrical, and the vent or flue it needs. They check the refrigerant lines and connections for the air conditioner, and test the ignition and heat exchanger on the furnace. Once everything is connected, they run the system through its cycles to make sure it's heating or cooling correctly and check the airflow at your vents. They'll also walk you through the thermostat and anything else specific to the equipment they installed.