Pennsylvania · 33 covered places · 40 ZIP codes
Plumbers in Chester County, PA
We cover 33 cities and towns in Chester County, Pennsylvania, across 40 ZIP codes, including West Chester, Coatesville, Downingtown. About 498,000 people live in those ZIP codes. Most homes date from 1980 to 1999, old enough that original water heaters, valves and drains are wearing out.
| Year built | Share of homes |
|---|---|
| Before 1940 | 13% |
| 1940–1959 | 10% |
| 1960–1979 | 22% |
| 1980–1999 | 29% |
| 2000 or later | 26% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| West Chester | 109,020 | 21% |
| Coatesville | 55,671 | 32% |
| Downingtown | 52,524 | 16% |
| Phoenixville | 43,927 | 31% |
| Malvern | 28,650 | 20% |
| Kennett Square | 23,435 | 27% |
| Exton | 20,660 | 11% |
| Oxford | 17,929 | 22% |
| Chester Springs | 17,071 | 7% |
| Spring City | 12,382 | 45% |
What goes wrong in Chester County homes
Oil-heated homes
18% of occupied homes here heat with fuel oil, far above the national norm. Many of them make hot water with a tankless coil inside the boiler, which runs the boiler all summer. Plumbers often replace the coil with an indirect tank or a standalone water heater when the boiler is serviced or replaced.
Long, hard winters
45% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a long Pennsylvania winter those are the lines that freeze and split. See frozen and burst pipe repair.
1980s and 90s construction and polybutylene
29% of homes were built between 1980 and 1999. Polybutylene supply pipe was installed widely in US homes from about 1978 to 1995, so houses from these years are worth checking for gray plastic pipe stamped PB2110, usually visible at the water heater or under sinks. Insurers and buyers often ask about it. See polybutylene replacement.
Common plumbing work in Chester County
City pages in Chester County
Other covered towns in Chester County
- Atglen (1 ZIP)
- Avondale (1 ZIP)
- Berwyn (2 ZIPs)
- Chadds Ford (1 ZIP)
- Chester Springs (1 ZIP)
- Cheyney (1 ZIP)
- Coatesville (1 ZIP)
- Cochranville (1 ZIP)
- Devon (1 ZIP)
- Downingtown (1 ZIP)
- Elverson (1 ZIP)
- Exton (2 ZIPs)
- Glenmoore (1 ZIP)
- Kennett Square (1 ZIP)
- Kimberton (1 ZIP)
- Lincoln University (1 ZIP)
- Lionville (1 ZIP)
- Malvern (1 ZIP)
- Modena (1 ZIP)
- Nottingham (1 ZIP)
- Oxford (1 ZIP)
- Paoli (1 ZIP)
- Parkesburg (1 ZIP)
- Phoenixville (1 ZIP)
- Pomeroy (1 ZIP)
- Sadsburyville (1 ZIP)
- Southeastern (3 ZIPs)
- Spring City (1 ZIP)
- Thorndale (1 ZIP)
- Toughkenamon (1 ZIP)
- Unionville (1 ZIP)
- West Grove (1 ZIP)
Chester County plumbing FAQ
Which towns in Chester County do you cover?
33 places: Atglen, Avondale, Berwyn, Chadds Ford, Chester Springs, Cheyney, Coatesville, Cochranville, Devon, Downingtown, Elverson, Exton, Glenmoore, Kennett Square, Kimberton, Lincoln University, Lionville, Malvern, Modena, Nottingham, Oxford, Paoli, Parkesburg, Phoenixville, Pomeroy, Sadsburyville, Southeastern, Spring City, Thorndale, Toughkenamon, Unionville, West Chester, West Grove. Enter your ZIP code to confirm coverage for your street.
How old are homes in Chester County?
Across the covered ZIP codes, Census estimates put 23% of homes as built before 1960, 22% from 1960 to 1979, 29% from 1980 to 1999 and 26% in 2000 or later.
Who licenses plumbers in Chester County, PA?
Pennsylvania has no statewide plumbing license; Philadelphia, Allegheny County and other municipalities license plumbers, and home improvement contractors register with the Attorney General.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in Chester County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Chester County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.