Illinois · 19 covered places · 22 ZIP codes
Plumbers in McHenry County, IL
We cover 19 cities and towns in McHenry County, Illinois, across 22 ZIP codes, including Crystal Lake, McHenry, Woodstock. About 336,000 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 | 8% |
| 1940–1959 | 10% |
| 1960–1979 | 19% |
| 1980–1999 | 36% |
| 2000 or later | 27% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Crystal Lake | 60,312 | 15% |
| McHenry | 55,801 | 22% |
| Woodstock | 33,307 | 25% |
| Algonquin | 32,303 | 10% |
| Huntley | 29,452 | 3% |
| Lake In The Hills | 28,853 | 6% |
| Cary | 26,503 | 18% |
| Harvard | 13,333 | 33% |
| Marengo | 12,006 | 27% |
| Wonder Lake | 11,481 | 32% |
What goes wrong in McHenry County homes
Natural gas in most homes
86% of occupied homes here heat with utility gas, so gas water heaters, ranges and dryers are common. That means gas line extensions for new appliances, flexible connector replacements and venting checks when a water heater is swapped. If you smell gas, leave first and call the gas utility from outside. See gas line repair.
1980s and 90s construction and polybutylene
36% 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.
Long, hard winters
37% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a long Illinois winter those are the lines that freeze and split. See frozen and burst pipe repair.
Hard water
Illinois water is generally hard. With 86% of homes here on gas, scale settles as sediment in gas water heater tanks, which then rumble and wear out early. See water softener installation.
Common plumbing work in McHenry County
Other covered towns in McHenry County
- Alden (1 ZIP)
- Algonquin (1 ZIP)
- Cary (1 ZIP)
- Crystal Lake (3 ZIPs)
- Fox River Grove (1 ZIP)
- Harvard (1 ZIP)
- Hebron (1 ZIP)
- Huntley (1 ZIP)
- Island Lake (1 ZIP)
- Lake In The Hills (1 ZIP)
- Lakewood (1 ZIP)
- Marengo (1 ZIP)
- McHenry (2 ZIPs)
- Richmond (1 ZIP)
- Ringwood (1 ZIP)
- Spring Grove (1 ZIP)
- Union (1 ZIP)
- Wonder Lake (1 ZIP)
- Woodstock (1 ZIP)
McHenry County plumbing FAQ
Which towns in McHenry County do you cover?
19 places: Alden, Algonquin, Cary, Crystal Lake, Fox River Grove, Harvard, Hebron, Huntley, Island Lake, Lake In The Hills, Lakewood, Marengo, McHenry, Richmond, Ringwood, Spring Grove, Union, Wonder Lake, Woodstock. Enter your ZIP code to confirm coverage for your street.
How old are homes in McHenry County?
Across the covered ZIP codes, Census estimates put 18% of homes as built before 1960, 19% from 1960 to 1979, 36% from 1980 to 1999 and 27% in 2000 or later.
Who licenses plumbers in McHenry County, IL?
The Illinois Department of Public Health licenses plumbers and plumbing contractors must register; Chicago adds its own requirements.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in McHenry County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in McHenry County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.