- BBB A+ Rated
- Mesquite Chamber of Commerce Member
- 30+ Years Experience
Water Heater Repair and Installation in Grand Prairie, TX
James Armstrong Plumbing repairs, replaces, and installs water heaters in Grand Prairie homes. We install State water heaters, in both standard tank and tankless configurations.
James Armstrong is a Texas Master Plumber, License M-39428, with more than 30 years in the field and a BBB A+ rating held since 2018. We are based in Mesquite, about 40 minutes from Grand Prairie across Interstate 30.
If you smell gas near your water heater, stop. Leave the building without flipping any switches or using your phone inside. Once you are outside and away, call 911. Then call Atmos Energy at 866-322-8667, which is the gas utility for Grand Prairie. Call us at 214-918-6109 once the area has been made safe.
For everything else, call 214-918-6109 to book a service call.
Licensed Master Plumber
License #M39428
The “Armstrong Clean Promise"
No mess, no stress — that's our guarantee.
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Our Services
Comprehensive Plumbing Solutions for Homes & Businesses
Most Requested 
Plumbing Repairs and Installation
Get fast help from a trusted plumber in the DFW for leaks, fixture installs, and upgrades. We restore your plumbing with smooth, reliable work.
Water Heater Services
From quick fixes to full replacements, our water heater services in Dallas-Fort Worth, keep your hot water steady. We work on all standard and tankless models.
Most Requested 
Drain Cleaning Services
Stubborn clogs disappear with our drain-cleaning solutions in Texas. We clear the buildup fully so your drains flow the way they should.
Sewer Line Plumbing
Our team handles sewer line plumbing in the DFW , with careful inspection and precise repairs. We keep wastewater moving safely away from your home.
Gas Line Plumbing
Safe and reliable gas line plumbing in the DFW, is just a call away. Whether it’s a leak, repair, or new line, we follow strict safety standards.
Emergency Service
Emergency Service — Available 24/7
Burst pipe? Major leak? Don’t wait. Our emergency team serves the entire DFW area around the clock.
Technician available now
Why Choose Us
Why DFW Homeowners Choose James Armstrong Plumbing
Licensed & Certified Technicians
Our plumbers are fully licensed, professionally trained, and committed to delivering quality workmanship that meets today’s industry standards.
Transparent, Upfront Pricing
No hidden fees and no surprises. Just clear, honest pricing you can trust before we begin any repair or installation.
Fast & Friendly Service
We respect your time. Our technicians arrive promptly, work efficiently, and treat you and your home with courtesy and care.
The Armstrong Clean Promise
Floor protection, shoe covers, and a meticulous cleanup on every job. If your home isn’t cleaner than we found it, we pay for the cleaning.
5-Star Rated by Homeowners Like You
Local families choose us for reliable plumbing and friendly service. Your comfort, safety, and satisfaction are the reasons we do what we do.
Emergency Response Available
Afterhours emergency calls accepted. Call (214) 918-6109.
Grand Prairie water is hard, and your water heater pays for it
The City of Grand Prairie reports an average water hardness of 132 parts per million, or 7.7 grains per gallon, in its own water quality reporting. The Water Quality Association classifies anything from 7.0 to 10.5 grains per gallon as hard water.
Here is what that does inside a tank. Calcium and magnesium come out of solution when the water is heated and settle on the bottom of the tank as scale. That layer sits between the burner or the element and the water it is supposed to heat. The unit runs longer to reach the same temperature, the bottom of the tank runs hotter than it was designed to, and the glass lining degrades faster. On an electric unit, scale builds directly on the element and burns it out.
You hear it before you see it. A popping or rumbling sound during a heating cycle is water flashing to steam underneath the scale layer. That noise means the tank has been accumulating sediment for a while.
Flushing the tank once a year is the single cheapest thing a Grand Prairie homeowner can do to get the rated life out of a water heater. Most people never do it, which is why most water heaters here do not reach the years printed on the label.
A lot of Grand Prairie is due at the same time
Citywide the median home was built in 1992, and 22.5 percent of the housing stock went up between 2000 and 2009. A conventional tank water heater typically lasts 8 to 12 years in this water.
Do that math on a house built in 2005. The original unit failed years ago, its replacement is now at or past the end of its own life, and the homeowner has usually forgotten which one they are on. That is the most common water heater call we take from south Grand Prairie, out of Mira Lagos, Lakeridge, Grand Peninsula and the neighborhoods around Lynn Creek Park.
North of Interstate 30, in the older stock around downtown, Dalworth, and Bear Creek, the houses date from 1940 to 1969 and the problem is different. The heaters have usually been swapped several times, but the supply lines feeding them may still be original galvanized, and a replacement is the right moment to look at that rather than the wrong moment to ignore it.
Repair or replace
Repair usually makes sense when the unit is under about eight years old and the failure is a component: a thermostat, a heating element, a thermocouple, a gas control valve, or a leaking fitting at the top of the tank.
Replacement is the honest answer when the tank itself is leaking. Water coming from the body of the tank means it has corroded through from the inside, and there is no repair for that. Shut off the water supply to the heater and the gas or breaker feeding it, then call.
Replacement is usually also the better call when the unit is past 10 years, the repair cost is approaching half the cost of a new unit, or the heater has already been repaired once recently.
We will give you the repair number and the replacement number and let you decide. If repair is genuinely the better value, that is what we will tell you.
Where the unit is installed changes everything
In a lot of Grand Prairie homes, especially two story houses on the south side, the water heater sits in an attic or an upstairs closet.
That placement is normal in Texas and it is fine until the tank fails. When a heater in a garage lets go, you get a wet garage floor. When a heater in an attic lets go, water comes down through the ceiling into finished rooms, and the damage bill is many times the cost of the heater.
Two things matter on those installations. The drain pan underneath needs to be intact and its drain line needs to actually be routed to somewhere outside, not just terminated in the attic. And the shutoff valve needs to be reachable without a ladder and a flashlight during an emergency.
We check both on every attic and upstairs unit we work on, whether you asked us to or not.
Meet James Armstrong
Meet the Master Plumber Serving Grand Prairie: James Armstrong
James Armstrong has been a Mesquite-resident Master Plumber since 1995. What began as helping neighbors fix leaky faucets turned into a career — and eventually a family business, built on one simple rule: treat people right, do the job with integrity, and always stand behind your work. Today, James and his crew serve Grand Prairie, Sachse, Garland, and the broader DFW metro from the Mesquite headquarters at 844 Dalworth Dr.
“In thirty years of plumbing across the DFW metro, including Grand Prairie, the drain calls almost always come down to two things: tree roots in the older neighborhoods, and grease and hair buildup in the newer developments. We camera-inspect first, then choose hydro-jetting or snaking based on what we actually see — not on what gets you to the highest invoice.”
James Armstrong, Master Plumber • Texas License M-39428 • Founder, James Armstrong Plumbing
Every job comes with the Armstrong Clean Promise — we leave your home cleaner than we found it, guaranteed. No excuses, no mess, no shortcuts. It’s the kind of commitment that’s earned us thousands of repeat customers and a reputation across the DFW metroplex for honest, reliable work.
Emergency Calls Accepted After Hours & Weekends as well.
Our Process
What to Expect When You Call
Call or Book Online
Speak with a real person, not a call center. We schedule at your convenience.
Same-Day Inspection
A licensed plumber evaluates your issue on-site. No guesswork.
Upfront Quote
You approve the price before work begins. The number you see is final.
Clean, Expert Work
Armstrong Clean Promise — we leave your home better than we found it.
Follow-Up Guarantee
We check in within 24 hours and follow up to ensure everything holds.
No hassle estimate · No obligation · Real person answers
Service Areas
Serving Communities Across Dallas-Fort Worth
- Allen
- Anna
- Arlington
- Azle
- Balch Springs
- Bedford
- Benbrook
- Blue Mound
- Blue Ridge
- Burleson
- Celina
- Colleyville
- Combine
- Dallas
- Everman
- Fairview
- Farmersville
- Flower Mound
- Forest Hill
- Fort Worth
- Frisco
- Garland
- Grand Prairie
- Plano
- Richardson
- Rowlett
- Sunnyvale
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FAQ
Frequently Asked Questions
Have questions? We’ve got answers. Can’t find what you’re looking for? Give us a call anytime.
A conventional tank unit typically lasts 8 to 12 years here. Grand Prairie water averages 7.7 grains per gallon according to the city's own water quality reporting, which is hard water, and scale buildup shortens tank life. Flushing the tank once a year is the cheapest way to reach the upper end of that range.
It means sediment has built up on the bottom of the tank and water is flashing to steam underneath it. It is not an emergency, but it is a sign the unit is working harder than it should and losing efficiency. A flush may help. If the unit is already past 10 years, it is usually telling you to plan a replacement.
Almost never. Leaking from the body of the tank means it has corroded through and it needs replacement. Shut off the water supply to the heater and the gas or breaker feeding it, then call us at 214-918-6109.
It can be, with one condition. Hard water is harder on a tankless heat exchanger than on a tank, so a tankless unit here needs descaling on a regular schedule. If you will keep up with that, the longer life and space savings are real. If you will not, a tank unit is the more honest recommendation.
We install State water heaters in both tank and tankless configurations.
Not worried, but you should know two things. The drain pan under the unit needs to be intact and its drain line needs to run somewhere outside the house rather than ending in the attic. And you should know where the shutoff is before you need it at two in the morning. We check both on every attic installation we work on.