AC Installation in Washington, PA
A new air conditioner in Washington will run 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.
Three summer months, but hard on equipment
Washington County only asks a new air conditioner to work June through August. That is three months of summer afternoons averaging 82°F. The rest of the year that outdoor unit is just sitting there, exposed to whatever the weather brings.
And the weather here brings a lot. Ten years of records show 263 damaging wind events and 59 hail events in the area, with hailstones up to 3 inches across. That outdoor unit takes those storms head on, so the condenser coil and the cabinet around it need to hold up to more than heat. Any new central air conditioner installed today also has to meet 13.4 SEER2, the federal minimum since 2023. That is the floor, not a selling point, so it is worth asking what a contractor is installing above it.
- 3 months
- June through August, your air conditioner is on duty
- 82°F
- the average summer afternoon it cools against
- 59 hail events
- in ten years, and hail bends the fins on outdoor coils
- 13.4 SEER2
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A higher-efficiency unit would save about $30 a year to run in Washington County compared with a new unit at the federal minimum.
Estimates for a typical Washington 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.
Registration puts the business on file with the state, through the Bureau of Consumer Protection. Nobody tested the contractor's trade knowledge to get that number, and nothing in it says how well they install an air conditioner. It's a record that they exist and can be traced, not a check on their work. Pennsylvania also keeps cities and towns from adding their own HVAC license on top of it, so this is the only state-level answer you get anywhere in the state.
For this job, the real check is local. Installing an air conditioner in most cities and counties calls for a permit from the local building office, and an inspection once the work is done. That inspection is what confirms the install was done right, not the registration.
Source: Pennsylvania General Assembly
- What size air conditioner does my house need?
- There's no single number that works for every house. The right size depends on your square footage, how much insulation you have, how many windows face the sun, and even the height of your ceilings. A contractor works this out with a load calculation, not a chart based on home size alone. Going bigger than what the calculation calls for isn't a safety margin, it actually makes the unit cool the air fast without running long enough to pull humidity out, so the house feels clammy even at the right temperature.
- Should I replace the whole system or just the outdoor unit?
- In most cases, both the outdoor unit and the indoor coil get replaced together. Manufacturers match the two to work as a pair, and pairing a new outdoor unit with an old indoor coil often means losing efficiency you paid for, sometimes voiding the warranty too. If your furnace and its blower are newer and still in good shape, those often don't need to be part of the job. A contractor can look at what you have and tell you what actually needs to change.
- Do HVAC contractors in Washington need a state license to work on my home?
- A contractor doing this work should be registered with the state. Ask to see that registration before work starts and confirm it's current. A legitimate contractor will also carry insurance, which matters if something goes wrong in your home during the job.