Water Heater Repair & Replacement

Hot Water is an essential part of your daily routine, from showering to cooking, we rely on our water heaters to function correctly day and night. When your hot water starts to run cold or your water heater tank is leaking or just needs to be replaced, call Legacy Plumbing. Our expert water heater technicians and friendly staff are here to help you.

Your water heater may be out of sight, but it should not be out of mind. If your unit is more than 10 years old, it is time to consider replacing it.  Units more than 10 years old are at increased risk for malfunctions. Water heater related failure could cause costly damage to your home.

Check the date. Checking the date of your hot water heater is an important step in home maintenance.  You should know the age of your water heater because it can help you decide when you should replace it, before problems arise. To determine how old your unit is, examine your unit for a sticker with a serial number on it.  The date will be coded in the serial number. Take note of the manufacturer and reference your owner’s manual or perform an Internet search to find information on your unit’s coding method.  If you are unable to determine your unit’s age, contact a Legacy Water Heaters.

Weigh the costs. Water heaters are inexpensive compared to the cost of your home.  Water damage from a flooded water heater can ruin carpets, dry wall, and wood surfaces and possibly promote the growth of mold if it’s been leaking.

Legacy Plumbing will send a friendly, clean, and knowledgeable plumber to your home to repair or replace your residential gas or electric water heater. We always offer prompt, affordable, dependable, expert service you and your family can count on.

There are several indicators when your water heater needs to be replaced. Taking a few minutes to analyze your water heater performance can help you determine if it is time for a replacement. Being proactive now can help eliminate inconvenience or unforeseen damage if your tank should suddenly go out.

Different Types of Water Heaters


Natural gas water heaters are the most common water heater in the North DFW area by-far. Most of these have a rated capacity of 50 gallons. New gas tank-style water heaters have many more safety features than those of the past – the biggest of which is a closed-combustion design. Gas water heaters are efficient and very reliable over the long-haul.


50 gallon electric tank-style water heaters are also very common. Typically, these are installed in neighborhoods that do not supply gas hookups. These will usually last between 13-15 years before the tank itself starts to leak. It is not uncommon for one of the heating elements or thermostats to fail before that though. This can be changed out without replacing the entire tank.


Tankless technology has been around for a long time, but it is only recently really taking off in the Collin/Denton County area. Many new homes are being built with a natural gas tankless water heater pre-installed. Many of these are installed in the exterior wall, some are installed in the garage, and some are installed in the attic.

Water Heater Installation

Why Legacy? Better Service

Legacy Plumbing is a Reliance Authorized Professional Contractor, which means we only install Reliance for tank style, electric and gas water heaters. For tankless water heaters, we install Reliance, Rinaii and Navien brands.

The water heaters brands we offer are made with high-end materials and are more reliable than retail store offerings. Additionally, they are constructed for longer tank life, high performance and lower operating cost.

Better Warranty

The standard warranty that comes with our electric and gas tank-style water heaters is: 9-year Reliance tank and parts limited warranty and 1-year limited labor warranty through Legacy Plumbing.

Legacy also offers an extended warranty on our tank-style water heaters, making it a 12-year tank-and-part warranty with an upgraded 6-year Legacy-provided labor warranty. With the extended warranty we install a second high-quality magnesium anode rod that will lengthen the life expectancy of your water heater.

Navien water heaters

Legacy Automatic Advantage

When we install your new Reliance water heater, we will upgrade your water heater installation with:

  • New Stainless Steel Water Supply Lines
  • New Quarter Turn Water Shut Off Ball Valve

PLUS: We pull a permit and check the specific code requirements of the city you are located in to make sure everything is done up to code and passes inspection the first time. We dispose of the old, damaged heater at no extra cost.

What if I don’t need a new tank?

Age and lack of hot water are not always indicators of needing replacement. You may just need a repair. We want to provide you with an honest diagnosis and course of action for your water heater that fits your budget and needs. We will NEVER sell you anything you do not need.


A gas water heater is expected to last 10-12 years, while an electric model tends to last 10-15 years. If your heater is getting close to its life expectancy, especially if located indoors or in an attic, it may be prudent to change it before it goes out or starts leaking.

Discolored Water

Do you get tinted water when you open up the hot water tap? Rust-colored hot water is an indication of a bad tank.

Inadequate Temperature

If your hot water is not as hot or if you run out of hot water under normal conditions, it may be time for a new water heater.



Moisture around the base may signal a slow leak. If the water is pooling around the bottom with no sign of water on the supply lines, then the tank itself if probably leaking.

Replacing an older hot water heater in your home is a great step in preventing costly home repairs in the future. It also ensures that your family will continue to enjoy the comfort of hot water. The average four-person household in the Dallas-Fort Worth area will use around 2,000 gallons of hot water every month. Beyond the luxury of warm baths, hot water is also used to pre it pare meals, do laundry and wash dishes.

We are located in Frisco and proudly serve the cities of North Dallas, Collin and Denton Counties and provide same-day service in most cases. When you contact Legacy Plumbing, you can know that you will receive quality, clean, professional care and installation. 

Your family’s home and comfort is a top priority for us.

  • About 17% of the energy used in your home goes toward heating your water. (Energy.gov)
  • To conserve hot water, you can fix leaks, install low-flow fixtures, and purchase an energy-efficient dishwasher and clothes washer. (Energy.gov)
  • In 1889 Edwin Ruud invented the first automatic water heater in Philadelphia (Rudd.com)
  • The average person uses 80 to 100 gallons of water per day. (Usgs.gov)
  • A leak of one drip per second wastes 1,661 gallons of water and can cost up to $35 per year. (Energy.gov)
  • For maximum water efficiency, select a shower head with a flow rate of less than 2.5 gpm (Energy.gov)
  • “1.0 gpm”, means that a faucet head will allow water to flow at a maximum of 1.0 gallons per minute (Usgs.gov)
  • The largest use of household water is to flush the toilet. (Usgs.gov)
  • For every 10ºF reduction in temperature on your water heater, you can save roughly 3%–5% on your water heating costs. (Energy.gov)
  • A leak of one drip per second can cost $1 per month (Energy.com)
  • 60 drips per minute wastes about 8.64 gallons per day, which is 259 gallons per month, and about 3,153 gallons per year. (Energy.gov)
  • Showerheads and faucets that pre-date 1992 can use more than twice as much water as new ones. (Energy.gov)
  • You could save $15–$30 on your water heating bill simply by having heat traps installed on your water heater tank. (Energy.gov)
  • Low-flow fixtures can give you 25%–60% in water savings. (Energy.gov)
  • If it takes less than 20 seconds for your current shower head to fill a gallon, then you could benefit from a low-flow showerhead. (Energy.gov)
  • For the best water efficiency, look for a showerhead that has a flow rate of less than 2.5 gpm. (Energy.gov)
  • Before water heaters, water was heated over a stove or fire, then transported by hand to bathtubs where it was carefully poured in until the bath was a comfortable temperature. (Waterheaterhub.com)
  • During WWII, the water heater industry re-purposed their factories to aid in the war effort or began producing boilers for use in naval vessels. (Waterheaterhub.com)
  • Tankless water heaters don’t produce the standby energy losses associated with storage water heaters but provide hot water only as it is needed. (Energy.gov)
  • Gas-fired tankless water heaters produce higher flow rates than electric ones. (Energy.gov)

Legacy Plumbing is centrally located to provide fast service to North Dallas and surrounding suburbs. If you are looking for a North Dallas area plumber please call us today or complete our Online Request Form.

Our Work is Our Word.

Quote Mark
Quote mark
Recent Reviews of Water Heater Services