AC Installation in Philadelphia, PA
A new air conditioner in Philadelphia will run from June through September every year. Tell us about the house, and a licensed contractor who covers Philadelphia County will get in touch.
Tell us about the job
It takes about a minute.
Four months of real heat, every year
Philadelphia asks a central air conditioner to work June through September, and summer afternoons here average 85°F. That is the stretch your new system has to handle, season after season, without a break.
A new unit installed here has to meet 13.4 SEER2, the federal efficiency minimum for equipment built since 2023. That number sets the floor. What matters after that is sizing the system to your house and getting it installed right, so it keeps up on the hottest afternoons without running harder than it should.
- 4 months
- June through September, your air conditioner is on duty
- 85°F
- the average summer afternoon it cools against
- 16 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 $40 a year to run in Philadelphia County compared with a new unit at the federal minimum.
Estimates for a typical Philadelphia 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, but nobody tested this contractor's work to get it. There is no trade exam behind it, only a record. Pennsylvania also does not let Philadelphia or any other city add its own HVAC license on top of that, so this registration is the only state-level record that exists here.
For an air conditioner installation, the protection that actually reaches the job is local. Most cities and counties require a permit for this kind of installation and an inspection once the work is done, and if Philadelphia's building office follows that same rule, that inspection is what checks the installation itself, not the state registration.
Source: Pennsylvania General Assembly
- What size air conditioner does my house need?
- There's no single number that fits every home. Sizing depends on your square footage, your ceiling height, how many windows you have and which way they face, how much insulation is in your attic and walls, and even the number of people who live there. A contractor will walk through your house and run a load calculation to get this right. An oversized unit cools the air fast but shuts off before it pulls the humidity down, so the house feels damp even at the right temperature. An undersized one runs constantly and still can't keep up on your hottest afternoons.
- Should I replace the whole system or just the outdoor unit?
- In most cases it's better to replace both the outdoor unit and the indoor coil together. The two are matched to work at a specific efficiency and capacity, and pairing a new outdoor unit with an old indoor coil often means you lose the efficiency gain you paid for. It can also void the manufacturer's warranty on the new equipment. If your indoor coil is still young and in good shape, a contractor can tell you whether it's a safe match or whether replacing just the outdoor unit will cause problems down the line.
- Do HVAC contractors in Philadelphia 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 through the Bureau of Consumer Protection. Ask to see proof of that registration before work starts. It's also worth asking about insurance, since registration alone doesn't guarantee the quality of the work.