Overhead view of a gray outdoor AC condenser unit on a concrete pad beside a mulched garden bed and a house with vinyl siding.

AC Installation in Pittsburgh, PA

A new air conditioner in Pittsburgh will run from June through August every year. Tell us about the house, and a licensed contractor who covers Allegheny County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An outdoor air conditioning condenser unit mounted on a concrete pad next to a blue-sided residential house at sunset.

Three months of real heat, then it stops

Pittsburgh only asks an air conditioner to work June through August. Summer afternoons average 82°F, so the unit you install doesn't face the long, brutal cooling season homes in the south deal with. It gets a short, hard season and then months off.

Any new central air conditioner installed today has to meet 13.4 SEER2, the federal minimum that took effect in 2023. That's the floor, not a special upgrade. What matters more here is the storm record. Allegheny County saw 115 hail events and 548 damaging wind events over the last ten years, with hail up to 2 inches recorded. The outdoor unit sits outside through that, so how it's installed, and how exposed it is, matters as much as the equipment itself.

3 months
June through August, your air conditioner is on duty
82°F
the average summer afternoon it cools against
115 hail events
in ten years, and hail bends the fins on outdoor coils
13.4 SEER2
the federal minimum any new unit must meet
Isometric cutaway illustration of a small house showing interior rooms with furniture, an indoor air handler with ducts in the attic space, and refrigerant lines running to an outdoor condenser unit on a pad.
Your air conditioner works hardest from June through August.

NOAA nClimDiv, 1991–2020 normals

An outdoor central air conditioning unit mounted on a concrete pad beside a blue-sided house at sunset.

A higher-efficiency unit would save about $30 a year to run in Allegheny County compared with a new unit at the federal minimum.

  • A higher-efficiency unit$220 a year
  • A new unit at the federal minimum, 13.4 SEER2$250 a year

Estimates for a typical Allegheny 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. There's no trade exam attached to it, and the state isn't recording anything about the quality of the work. Pennsylvania also blocks cities and towns from adding their own HVAC license on top of it, so this registration is the only state-level record on a contractor anywhere in the commonwealth.

For this install, the protection that actually reaches the job comes from your local building office. Most cities and counties require a permit before the work starts and an inspection once it's done, and that inspection is what confirms the unit went in correctly. That local check is doing the job the state registration doesn't.

Source: Pennsylvania General Assembly

What size air conditioner does my house need?
The right size depends on your home's square footage, how many windows it has, how much insulation is in the walls and attic, and which way the house faces. A unit that's too big cools the air fast but shuts off before it pulls the moisture out, so rooms feel damp. One that's too small runs constantly and still can't keep up on the hotter afternoons. A contractor will walk the house and run a load calculation to land on the right tonnage, since guessing from square footage alone gets it wrong often enough to matter.
Should I replace the whole system or just the outdoor unit?
If your indoor coil and outdoor unit were installed together, they were sized and matched to each other, so replacing only the outdoor unit usually causes problems. Putting a new condenser on an old coil can mean poor cooling and extra strain on the compressor. New central air conditioners also have to meet a federal efficiency minimum of 13.4 SEER2, and an older coil often isn't built to work with that. A contractor can check whether your existing coil is a match before deciding.
Do HVAC contractors in Pittsburgh need a state license to work on my home?
Pennsylvania doesn't license HVAC contractors, but it does require them to register with the state's Bureau of Consumer Protection. Ask to see that registration before work starts. It's not the same as a trade license, but it's the state's way of keeping a record of who's doing home improvement work and gives you somewhere to turn if something goes wrong.