Water heater repair in Dallas, TX

Dallas lake water

Dallas Water Utilities draws from a network of reservoirs, including Lake Ray Hubbard, Lake Tawakoni, Lake Lewisville, Grapevine Lake and others, and treats the water at the East Side, Elm Fork and Bachman plants. Surface water from these lakes is moderately hard, softer than groundwater in much of Texas. The hardness varies somewhat depending on which plant serves your area and the season.

That means sediment builds in a Dallas tank more slowly than in San Antonio or Phoenix, but it does build. A flush every year or two keeps most tanks quiet, and tankless units usually do fine with yearly descaling.

Summer water arrives warm, sometimes into the mid 80s, and winter water drops to around 50°F. That swing is enough that a tank that keeps up in August can run a little short in January, though nothing like the strain on heaters in the Upper Midwest.

Attics, garages and closets

Like most of Texas, Dallas builds on slabs. Post-war ranch houses in Lake Highlands, Lakewood and Preston Hollow typically have the heater in the garage or a utility closet. Many two-story homes built from the 1980s on, in North Dallas, Far North Dallas and the suburbs beyond, put the heater in the attic. Townhomes and condos in Uptown and the Design District often use tankless units or small electric tanks in closets.

Attic heaters need a drain pan piped to the outside or a drain, and an attic tank that fails without a working pan can ruin ceilings below. In older homes in Oak Cliff, East Dallas and the M Streets, pier-and-beam houses and older utility closets bring their own access challenges.

North Texas weather and water heaters

Dallas summers are long and hot, and attics regularly pass 130°F. That heat is hard on gas controls, plastic parts and the drain pan itself, which can crack after years of heat cycling. Garage heaters face dust, lint and, in some homes, a second refrigerator crowding the air supply.

Winter is shorter but can be sharp. Ice storms and hard freezes, like the February 2021 storm, freeze attic and exterior-wall pipes, and homes without power lose the heat that protects them. Tankless units on exterior walls can freeze without power to run their freeze protection. Insulating attic supply lines and knowing where your main shutoff is are worthwhile.

The problems plumbers see most in Dallas

• Leaking attic tanks and failed or clogged drain pans.
• Pilot and burner problems in dusty garages.
• Sediment rumbling in tanks that have not been flushed in years.
• Tankless error codes, often from scale or undersized gas lines in conversions.
• Freeze damage to supply lines and exterior tankless units after cold snaps.
• Corroded connectors on older installs.

Typical water heater prices in Dallas

Dallas prices sit near the national average, with attic jobs and homes in the older central neighborhoods toward the top.

Permits and licensing in Dallas

Texas plumbers are licensed by the Texas State Board of Plumbing Examiners. The City of Dallas requires a permit for water heater replacement through its Development Services department, and inspectors check the gas line, venting, relief valve discharge, and the pan and drain for attic installs. Suburbs such as Plano, Irving, Garland, Richardson and Mesquite each issue their own permits.

Before agreeing to a replacement, ask for the plumber's license number and whether the permit and haul-away are included.

Across Dallas and its suburbs

Dallas proper has a wide range of homes. Lake Highlands and Lakewood are full of 1950s and 1960s ranch houses with garage or utility closet heaters. Preston Hollow has large custom homes, often with two heaters or large tankless systems serving long pipe runs. Oak Cliff and East Dallas have older pier-and-beam houses where access under and around the heater can be tight.

North of the city, in Plano, Richardson, Carrollton and Frisco, two-story homes from the 1980s onward commonly have attic heaters. Many of those original tanks have already been replaced once, and the second-generation heaters are now coming due. Suburban utilities buy water from different sources, such as the North Texas Municipal Water District, so hardness there can differ from Dallas proper.

Wherever you are in the metro, a heater in the attic deserves a look at its drain pan and drain line every time it is serviced.

Getting through a Dallas summer

Summer is not when most heaters fail, but it is when attic installs show their weaknesses. A drain pan that has sat at 130°F for a decade turns brittle, and the condensate and drain lines from the air conditioning and the water heater often share the same attic space. If you notice a stain on a ceiling below the heater, or hear water dripping during an AC cycle, check the pan before assuming the heater is leaking.

Warm incoming water in July and August also means the heater fires less often. That is a good time to schedule a flush or a tankless descale, when you can do without hot water for an hour or two and plumbers' schedules are lighter than in winter.

Moving a heater out of the attic

Many Dallas homeowners replacing an attic tank consider relocating it to the garage or switching to a tankless unit outside. Relocation means rerouting water, gas and venting, so it costs more up front, but it removes the risk of a leak over living space and makes every future repair easier.

A tankless unit on an exterior wall is a common choice in Dallas, but it needs freeze protection and a sized gas line. Get prices for both a like-for-like attic replacement and a relocation, so you can weigh the extra cost against the risk.

Water heater questions from Dallas