Central air conditioner replacement cost in Philadelphia, PA
Installed, 3 ton (outdoor unit + matching coil)
A typical central AC (3 ton (outdoor unit + matching coil)) costs about $4,750 installed in the Philadelphia area, 2% above the national figure, because HVAC technicians here earn a median $31 an hour against $29 nationally.
Prices by size in Philadelphia
| Size | Low | Typical | High | National typical |
|---|---|---|---|---|
| 2 ton (outdoor unit + matching coil) | $3,200 | $3,550 | $4,600 | $3,500 |
| 3 ton (outdoor unit + matching coil) | $4,150 | $4,750 | $6,200 | $4,650 |
| 4 ton (outdoor unit + matching coil) | $5,550 | $6,100 | $7,800 | $6,000 |
| 5 ton (outdoor unit + matching coil) | $6,800 | $7,550 | $9,050 | $7,400 |
Local labor: what HVAC technicians earn here
| Hourly wage | Philadelphia metro | United States |
|---|---|---|
| 25th percentile | $25 | $23 |
| Median | $31 | $29 |
| 75th percentile | $38 | $37 |
The Philadelphia market
Philadelphia's Department of Licenses and Inspections requires a plumbing permit for replacement work, and water heater permits may be issued immediately when a contractor applies. Replacing appliances in a one- or two-family home qualifies for a mechanical EZ permit. Any owner or authorized agent may apply, but a licensed master plumber must oversee plumbing and a licensed contractor must perform mechanical work. A Certificate of Approval follows the required inspections, and boilers are regulated by the Pennsylvania Department of Labor and Industry. Fees run $31 for a water heater in a one- or two-family home, $69 per separately submitted mechanical appliance, a $100 filing fee credited toward the permit and small City and State surcharges. Rowhouse stock means mixed systems: EIA found 19% of Pennsylvania homes heat with a boiler and 6% heat water with oil. Camden, Wilmington and the suburban counties have separate permit offices.
About 54% of Pennsylvania homes have central air and 43% use room units, and many Philadelphia rowhouses rely on window units or ductless systems because ducts were never installed. Inspectors may ask for the HVAC Equipment Certificate and, where ducts are involved, the Duct and Envelope Testing Certificate, so confirm the contractor handles both. Ask where a rooftop or rear-yard condenser will sit and how it will be reached for service.
Permits in Philadelphia
| Permit for this job | Yes (mechanical permit; EZ permit for replacing appliances in 1-2 family dwellings) (source) |
|---|---|
| Fee | Water heater: $31 (1-2 family) or $37; mechanical appliance submitted separately $69 each in 1-2 family ($158 otherwise); direct-vent/flue-connected heating unit $69 in 1-2 family; $100 non-refundable filing fee credited to permit fee; surcharges $3 City + $4.50 State per permit. |
| Who can pull it | Owner or authorized agent may apply, but work must be done/overseen by a licensed master plumber (plumbing) or licensed contractor (mechanical) |
| Inspection | Yes |
Rebates in Pennsylvania
HEAR: announced, not open yet. HOMES: announced, not open yet. Source: PA DEP Energy Programs Office, checked October 13, 2026.
What these programs cover, and other states
Other systems in Philadelphia
- Gas tank water heater
- Gas tankless water heater
- Gas furnace
- Heat pump (ducted, outdoor unit + air handler)
Central air conditioner cost in other metros
Sources
- City of Philadelphia: Get a plumbing permit
- City of Philadelphia: Get a mechanical permit
- Philadelphia L&I Water Heater Replacement Certification Form
- Pennsylvania DEP: Inflation Reduction Act home energy rebates
- EIA, 2020 RECS: Highlights for space heating in U.S. homes by state
- EIA, 2020 RECS: Highlights for water heating in U.S. homes by state
- EIA, 2020 RECS: Highlights for air conditioning in U.S. homes by state
- BLS OEWS May 2025, Philadelphia-Camden-Wilmington, PA-NJ-DE-MD (49-9021 HVAC mechanics and installers)
- DOE Residential CAC & Heat Pumps Direct Final Rule TSD (Dec 2016), Table 8.2.30, split AC coil-only (2015$; 4-ton interpolated)