Water heater repair in Denton, TX

Water from Ray Roberts and Lewisville

The City of Denton owns its water utility. Raw water comes from Lake Ray Roberts north of town and Lake Lewisville to the south, both reservoirs on the Elm Fork of the Trinity River. The city treats it at the Ray Roberts Water Treatment Plant and the Lake Lewisville Water Treatment Plant before sending it through town.

North Texas reservoir water is moderately hard. It is not as harsh as West Texas groundwater, but over several years it leaves a layer of calcium on the bottom of a tank and inside tankless heat exchangers. Electric tanks, which are common in Denton's older rentals and apartments, are especially prone to scale on the lower element. When that element is caked, it overheats and burns out, and the first sign is usually a cold shower in a house full of roommates.

Denton Municipal Electric and Atmos gas

Among Dallas-Fort Worth cities, Denton stands out for owning its power company outright. Denton Municipal Electric serves most homes inside the city, so households inside city limits pay DME directly rather than picking a retail plan from a long list. Homes just outside the city may be on CoServ or another co-op instead.

Natural gas comes from Atmos Energy. The choice between a gas and an electric replacement in Denton therefore depends on DME's rate schedule, any efficiency programs it offers at times, and whether the house already has a gas line run to the heater location. Many 1990s and newer homes on the south and west sides have gas available in the garage, while some older duplexes were built all-electric.

College rentals and fast turnover

With the University of North Texas and Texas Woman's University both in town, a large share of Denton housing is rented to students. The neighborhoods around Fry Street, the streets west of campus, the blocks between the Square and TWU, and the duplex rows off Bonnie Brae and Malone Street fill up each fall. Four students sharing a 40-gallon tank use far more hot water than the house was ever planned for, and morning shower schedules before 8 a.m. classes expose an undersized heater fast.

Landlords tend to replace like for like, often with the cheapest tank that fits the closet or garage. That keeps upfront costs low but can mean repeated calls about running out of hot water. When a rental heater fails, it is worth asking whether a 50-gallon tank or a higher-recovery gas model would end the complaints. Tenants should report leaks and lukewarm water in writing; Texas law requires landlords to make repairs that affect health and safety once notified.

Attics, garages and closets

Older homes in the Oak-Hickory historic district and around the Courthouse Square have heaters in back porches, closets or detached garages. Ranch houses from the 1960s through the 1980s in neighborhoods such as Southridge usually keep the tank in the garage on a raised platform. Newer subdivisions across the south side, Rayzor Ranch and the master-planned areas toward Interstate 35W frequently hoist the tank into the attic above the garage.

An attic heater in Denton should sit in a pan with a drain line routed outside, because a slow leak overhead can ruin a ceiling before anyone notices. Summer attics can climb above 130 degrees, which strains gas controls and plastic parts. Getting a 50-gallon tank down a pull-down ladder is also why attic replacements cost more. In the 55-and-over Robson Ranch community west of town, most homes have garage or utility room heaters, and leak alarms are a popular add-on.

Winter storms and frozen pipes

Denton does not see long freezes often, but when one hits, it hits homes built for heat. During the February 2021 winter storm, pipes burst across North Texas, and many water heaters in attics and garages were damaged when supply lines froze or tanks drained while the power was out. Heaters in unheated garages and attics near exterior walls are the most exposed.

Before a hard freeze, insulate exposed hot and cold lines near the heater, keep the garage door shut, and know where the main shutoff is. If you lose water pressure during a freeze, turn the gas heater to pilot or switch off an electric heater's breaker so the elements do not fire in an empty tank.

The problems plumbers see most in Denton

• Burned-out lower elements on electric tanks in student rentals with years of scale.
• Attic pan overflows where the drain line was never connected or has clogged.
• Running out of hot water in shared houses near UNT and TWU.
• Relief valve discharge on summer afternoons when attic heat and high tank settings combine.
• Freeze damage to garage and attic heaters after rare Texas cold snaps.
• Scale-choked tankless units on south-side homes that have never had a descale.

Typical water heater prices in Denton

Denton labor costs are a bit below Dallas proper. Attic access, a new drain pan and line, and code updates such as an expansion tank or sediment trap are the usual reasons a quote rises. Landlords with several properties can sometimes arrange a lower rate for scheduled replacements.

Permits and Texas plumbing licenses

Denton cannot license a plumber on its own; that authority sits with state agencies in Austin. For decades the State Board of Plumbing Examiners ran the program, and its duties have been moving under the Texas Department of Licensing and Regulation, and an online search through the state will show whether a plumber's license is active. A water heater replacement should be handled by a licensed plumber or a registered apprentice working under one.

Inside city limits, the City of Denton's development services and building inspections staff issue the permit and inspect the installation, including the gas connection, venting, pan and drain, and relief valve line. Homes in Corinth, Argyle or unincorporated Denton County deal with their own city or county officials.

Sizing for Denton households

Warm summer supply water in the 80s means the burner coasts through August in Denton, which leads some homeowners to believe their tank is big enough. January tells a different story, when water arrives in the low 50s and the heater has to raise it 70 degrees or more. A family of four in a south Denton home is usually best served by a 50-gallon gas tank, or a tankless model rated for that 70-degree rise.

For student rentals, plan around the number of bedrooms, not the number of bathrooms. A four-bedroom house with two baths still sees four morning showers. A replacement heater chosen with that pattern in mind costs a little more but cuts service calls.

Around Denton

Corinth and Lake Dallas to the south have their own permit offices, and Corinth buys treated water through a regional supplier. Argyle and Flower Mound near Lewisville Lake are newer communities with attic and garage heaters. Sanger, Krum and Aubrey to the north each run small city water systems and permits. Lewisville operates its own water plant on the lake that shares its name.

Water heater questions from Denton