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Water heater service(858) 465-8561
Serving Dayton, 45402 to 45420

Water Heater Repair in Dayton, OH

Dayton pumps its water from about 110 wells and lime-softens it, and about 37% of homes here date to 1939 or earlier. If your water heater has quit or is leaking, call and get a plumber out.

Call for service(858) 465-8561What's different in Dayton
Cold in Hot out 1 T&P relief valvedrips from high pressure 2 Anode rodused up, tank rusts 3 Dip tubecracks, hot runs out 4 Sedimenthard water, popping 5 Gas valveno heat, no pilot 6 Pilot & thermocouplepilot keeps going out
  • One callStraight to water heater help
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  • All major brandsRheem, A.O. Smith, Bradford White, Rinnai, Navien
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Dayton at a glance

What shapes water heater trouble in Dayton

110

production wells in Dayton's two well fields

Source: City of Dayton Department of Water
155 mg/L

average hardness after softening (2010 figure)

Source: City of Dayton
37%

of Dayton homes were built in 1939 or earlier

Source: US Census Bureau
52%

of households rent

Source: US Census Bureau
Water

Softened well water, two big plants

Dayton's water comes from about 110 production wells in the Miami and Mad River well fields, which draw on the Great Miami River Buried Valley Aquifer. The Ottawa and Miami plants soften it with lime, adjust the pH with carbon dioxide, then fluoridate, chlorinate and filter it. In 2025 the city treated about 24.35 billion gallons for more than 400,000 people.

The city says it softens its extremely hard well water so that water heaters, detergent and soap work efficiently. It last posted an average of 155 mg/L, about 9 grains per gallon, for 2010. Some minerals still settle out when water is heated, so a tank collects scale over the years.

Discolored water

Brown water and service lines

Dayton says reddish or brown water usually comes from higher flow in the mains knocking loose iron deposits. Its advice is to avoid using the water until the disturbance passes, then let it run until clear. If the cold clears and the hot stays brown, the tank may be the source.

In the city's 2023 lead testing, none of 54 samples was over the action level, and lead wasn't detected in most of them. The 2025 report links to a service line inventory map that shows the material listed for your address.

Homes

Old housing, many renters

The median Dayton home was built in 1951. About 37% date from 1939 or earlier, only about 7% from 2000 or later, and about 19% are in buildings with five or more units. About 52% of households rent. If you rent, tell your landlord first, and shut the cold supply valve above the heater if it's leaking. About 68% of homes heat with gas and 28% with electricity.

Permits

City permits, monthly bulk pickup

Inside Dayton city limits, plumbing permits come from the city, not the county health district. The city's mechanical application lists a water heater under both plumbing and gas piping. Fees are based on the job's cost, with a minimum of $74.81 plus a 1% state surcharge on residential permits. The plumbing desk is 937-333-3892.

Bulk pickup comes one Friday a month by zone and must be scheduled ahead at 937-333-4800. The city lists metal appliances among bulk items, with up to five large items per pickup.

Before the plumber arrives

Safe steps for Dayton homes

  1. Leaking? Close the cold water valve on top of the tank.
  2. Turn off the gas valve or the breaker for the heater.
  3. Gas smell? Leave the house, then call 911 and your gas utility from outside. National Fuel, which now runs the former CenterPoint Energy Ohio gas utility, answers 1-800-838-0933 around the clock.
Service area

Where we take calls

Dayton, Montgomery County, ZIP codes 45402, 45403, 45404, 45405, 45406, 45410, 45414, 45417, 45420. Not sure your address is covered? Call and we'll check.

Nearby towns

Services in Dayton

Repair, replacement and emergencies

Plumber using a pipe wrench on the gas line of a tank water heater

Water Heater Repair

Gas, electric and tankless repairs, from pilot lights to heating elements.

Learn moreHot water running with steam from a copper kitchen faucet after a water heater repair

No Hot Water

Cold shower this morning? Get the cause found and fixed fast.

Learn moreTank water heater leaking water from its base onto a basement floor

Leaking Water Heater

Water around the tank or a dripping relief valve. Act before it floods.

Learn morePlumber's tool bag, pipe wrenches and copper fittings beside a water heater

Emergency Water Heater Repair

Burst tank, gas smell or water everywhere. Call right away.

Learn morePlumber wheeling a new tank water heater through a home hallway on a hand truck

Water Heater Replacement

When repair no longer makes sense, get a new tank or tankless unit.

Learn moreWall-mounted tankless water heater with copper and brass water and gas lines

Tankless Water Heater Repair

Error codes, lukewarm water and scale buildup on tankless units.

Learn more
Questions

Dayton water heater questions

Who is the gas company in Dayton, OH?

Check your bill. National Fuel took over CenterPoint Energy's Ohio gas utility on October 1, 2026, and serves about 335,000 customers in the Dayton and Miami Valley region. Its Ohio line, 1-800-838-0933, is answered 24 hours a day. If you smell gas, leave first.

Is Dayton's water soft?

It's softened. The city lime-softens its well water and last posted an average of 155 mg/L, about 9 grains per gallon, for 2010.

Do I need a permit to replace a water heater in Dayton?

Inside city limits, yes. The city's mechanical application covers water heaters, with a minimum fee of $74.81 plus a 1% state surcharge.

Will the city pick up my old water heater?

Dayton lists metal appliances as bulk items. Schedule a pickup at 937-333-4800; it runs one Friday a month by zone.

Sources

Where these local facts come from

Figures are the latest published by each source. Pricing and availability are set by the plumber.

No hot water in Dayton?

Call now for water heater repair or replacement.

Call for service(858) 465-8561
Call (858) 465-8561