Water Heater Repair in Delaware, OH
Delaware treats its own water from the Olentangy River, and one in six of its homes was built before 1940. Whether your heater is in a century-old basement or a new build, call and get a plumber out.
What shapes water heater trouble in Delaware
Olentangy River water, treated in town
A regional water plan from MORPC says the City of Delaware draws raw water from the Olentangy River below Delaware Reservoir and treats it at the Delaware Water Treatment Facility, with the ability to blend in groundwater from wells at the plant. Your water bill shows which system serves your address.
A historic core and new subdivisions
About 16% of Delaware homes date from before 1940, yet about 41% were built in 2000 or later. In the older houses near downtown, water heaters often sit in cramped basements with older venting and valves. In the newer subdivisions, many original heaters are now reaching the age when leaks and failed parts start.
One in three households rents
About 35% of Delaware households rent. If you rent, call your landlord or property manager first, since the heater usually belongs to the owner. If water is spreading, close the cold supply valve above the heater and turn off its gas or breaker while you wait.
Safe steps for Delaware homes
- Leaking? Close the cold water valve on top of the tank.
- Turn off the gas valve or the breaker for the heater.
- Gas smell? Leave the house, then call 911 and your gas company from outside: Columbia Gas at 1-800-344-4077, or Suburban Natural Gas at 1-877-485-8223 after hours.
Where we take calls
Delaware, Delaware County, ZIP codes 43015. Not sure your address is covered? Call and we'll check.
Nearby towns
Repair, replacement and emergencies

Water Heater Repair
Gas, electric and tankless repairs, from pilot lights to heating elements.
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No Hot Water
Cold shower this morning? Get the cause found and fixed fast.
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Leaking Water Heater
Water around the tank or a dripping relief valve. Act before it floods.
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Emergency Water Heater Repair
Burst tank, gas smell or water everywhere. Call right away.
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Water Heater Replacement
When repair no longer makes sense, get a new tank or tankless unit.
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Tankless Water Heater Repair
Error codes, lukewarm water and scale buildup on tankless units.
Learn moreDelaware water heater questions
Who is the gas company in Delaware, OH?
Parts of Delaware County are on Columbia Gas of Ohio and parts on Suburban Natural Gas, so check your bill. If you smell gas, leave first and call 911 and your gas company from outside.
Where does Delaware's city water come from?
Mainly the Olentangy River below Delaware Reservoir, treated at the city's plant and blended with well water when needed, according to MORPC's regional water plan.
I rent in Delaware. Who fixes the water heater?
Usually the landlord. Tell them right away, and shut off the water to the heater if it's leaking.
How cold does it get in Delaware?
NOAA's Westerville station, the nearest with full normals, averages about 110 nights a year at or below freezing, with January lows near 22°F.
Where these local facts come from
- US Census Bureau, American Community Survey 2020-2024 (via Census Reporter)
- NOAA NCEI, 1991-2020 climate normals
- MORPC, Sustaining Scioto Adaptive Management Plan
- Energize Ohio (OSU Extension), Suburban Natural Gas Co.
- Suburban Natural Gas Company, contact us
- AEP Energy, Delaware County natural gas supplier
- Columbia Gas of Ohio, report gas leaks
Figures are the latest published by each source. Pricing and availability are set by the plumber.
No hot water in Delaware?
Call now for water heater repair or replacement.