Water Heater Installation & Repair

Denton County's Trusted Water Heater Specialists

There are few things more disruptive to your daily routine than losing hot water. Whether you wake up to an ice-cold shower, notice rusty water coming from your taps, or discover a puddle forming beneath your water heater, Haltex Plumbing is here to restore comfort to your home quickly and affordably. As Denton County's award-winning plumbing team, we have installed and repaired thousands of water heaters across Denton, Argyle, Flower Mound, Highland Village, McKinney, Sanger, Krum, and Corinth over our 20-plus years in business.

We are not tied to a single manufacturer. We carry and install all major brands, including Rinnai, Rheem, Bradford White, A.O. Smith, and Navien. This independence means we recommend the water heater that is genuinely right for your household's size, water usage, and budget — not the one a single manufacturer pushes. Every installation is performed by a licensed Texas plumber operating under our Responsible Master Plumber license (RMP 45127) and is backed by both the manufacturer's warranty and our own workmanship guarantee.

Tank Water Heaters: The Reliable Standard

Traditional tank water heaters remain the most popular choice in Denton County homes for good reason. They store between 40 and 80 gallons of pre-heated water, delivering it on demand to your showers, dishwashers, and washing machines. Modern tank models from Bradford White and Rheem are significantly more efficient than units manufactured even a decade ago, with foam insulation and electronic ignition systems that reduce standby energy loss by up to 30 percent.

In North Texas, where water hardness averages between 12 and 20 grains per gallon depending on your municipality, tank water heaters are especially vulnerable to sediment buildup. Calcium and magnesium deposits accumulate at the bottom of the tank, reducing heating efficiency and shortening the unit's lifespan. We recommend annual flushing for all tank-style water heaters in Denton County — a service we include in our maintenance plans — to extend tank life by three to five years.

When it comes to sizing a tank water heater for a Texas home, the calculation is different from northern states. Our summers push ground water temperatures into the 70s, which means your water heater works less hard from May through September. But during winter cold snaps — which can drop ground water temps to the 40s — your heater needs the capacity and recovery rate to handle the extra thermal load. We size every installation based on your household's peak-hour demand, the number of bathrooms, and your incoming water temperature throughout the year.

Tankless Water Heaters: Endless Hot Water on Demand

Tankless (or on-demand) water heaters have gained tremendous popularity across Denton County, and for good reason. Instead of maintaining a stored reserve of hot water, these compact units heat water only as it passes through, delivering an unlimited supply. The Rinnai RU199 and Navien NPE-240A are among our most-installed models, offering flow rates of 9 to 11 gallons per minute — enough to run two showers and a dishwasher simultaneously in most homes.

The energy savings are real. The U.S. Department of Energy estimates that tankless water heaters are 24 to 34 percent more energy efficient than conventional tank models for homes that use 41 gallons or less per day. For larger families using 86 gallons or more daily, tankless systems are still eight to 14 percent more efficient. Over a typical 20-year lifespan (compared to 10 to 12 years for a tank), the total cost of ownership is often lower despite the higher upfront investment.

There are important considerations specific to Texas installations. Most homes in Denton County have natural gas service, which is ideal for tankless heaters. However, older homes may need a gas line upgrade to supply the higher BTU demand of a tankless unit. We handle all gas line modifications in-house — no need to coordinate with a separate contractor. We also ensure proper venting, which is critical for code compliance under the Texas Plumbing License Board (TPSPE) regulations.

Emergency Water Heater Replacement

A failed water heater rarely gives you advance warning. When your 40-gallon tank starts leaking at 6 AM on a Monday morning, you need a plumber who can respond immediately — not one who schedules you three days out. Haltex Plumbing offers same-day water heater replacement throughout Denton County. We stock the most popular tank sizes and tankless models on our trucks, so in many cases we can have your new water heater installed within hours of your call.

Signs that your water heater may be failing include inconsistent water temperature, rumbling or popping noises from the tank, visible rust on the unit or in your hot water, moisture or puddles around the base, and a unit that is more than 10 years old. If you notice any of these warning signs, call us for a free assessment before the situation becomes an emergency.

Signs You Need Water Heater Service

Do not wait for a complete failure. These warning signs indicate your water heater needs professional attention:

• Inconsistent water temperature — hot water that runs out quickly or fluctuates between hot and cold suggests a failing heating element or thermostat.
• Rusty or discolored water — brown or rust-colored hot water typically means internal corrosion has compromised the tank's anode rod or the tank itself.
• Strange noises — rumbling, popping, or crackling sounds indicate heavy sediment buildup at the bottom of the tank, which is especially common in Denton County's hard water.
• Visible leaks or moisture — any water pooling around the base of your water heater requires immediate attention. Even small leaks can cause significant water damage.
• Age — tank water heaters typically last 10 to 12 years. If yours is approaching that age, proactive replacement prevents emergency failures.
• Rising energy bills — an inefficient water heater works harder and costs more. If your gas or electric bill has crept up without explanation, your water heater may be the culprit.

Our Water Heater Installation Process

Every Haltex water heater installation follows a proven process designed for safety, code compliance, and long-term reliability.

Step 1: Assessment & Recommendation

We evaluate your home's hot water demand, existing plumbing infrastructure, gas or electrical capacity, and your budget. We present options — tank, tankless, or hybrid — with transparent pricing and no pressure to upsell.

Step 2: Removal of Old Unit

We safely disconnect and remove your existing water heater, including proper disposal. If the old unit leaked, we inspect the surrounding area for water damage and can coordinate with our sister company, The Design House, for any necessary repairs.

Step 3: Professional Installation

Your new water heater is installed to manufacturer specifications and Texas plumbing code requirements. This includes proper venting, gas line connections (with leak testing), water line connections, expansion tank installation where required, and seismic strapping per local code.

Step 4: Testing & Walkthrough

We test every connection, verify proper operation, and walk you through your new unit's controls, maintenance schedule, and warranty coverage. We set the temperature to the recommended 120°F and ensure everything is working perfectly before we leave.