Tankless Water Heater Installation & Repair
Hot water that doesn't run out.
A tankless water heater heats water as you use it, so there’s no tank to run dry. CR Plumbing installs, repairs and services tankless units across DFW, gas and electric. Maybe you’re replacing an old tank, chasing an error code or finally getting yours descaled. Either way, you’ll get a licensed plumber and a price before we start.
Licensed Installers
Our plumbers are licensed in Texas and install gas and electric tankless units to code. That includes the venting, gas line and electrical work they depend on.
Smart Controls and Diagnostics
Most newer units show error codes, and many connect to a phone app. We'll show you how to read yours.
Space-Saving Designs
A tankless unit mounts on the wall. That frees up the floor space a 40 or 50 gallon tank takes up in your garage or closet.
Energy-Efficient Performance
No tank to keep hot means no standby heat loss. Ask us about ENERGY STAR models if lower bills are the goal.
Tankless Water Heater Services for DFW Homes
A tank heater keeps 40 or 50 gallons hot around the clock, whether anyone’s home or not. A tankless unit skips all that. When you open a hot tap, water runs through a heat exchanger, a gas burner or electric elements fire up, and the water comes out hot until you shut it off. No tank, no standby heat loss, and no cold shower because two people showered back to back.
There’s one thing every tankless owner in North Texas should know. Our water is hard, and minerals build up inside the heat exchanger over time. That restricts flow, makes the temperature swing and eventually trips an error code. It’s the most common reason a tankless unit starts acting up here, and a yearly descaling prevents most of it.
We handle the whole job: installation, repair and maintenance. We’ll also tell you when tankless isn’t the right call. In some homes, a conventional tank water heater is simpler and costs less. Our water heater services page covers both.
Tankless Water Heater Installation
Tankless Water Heater Repair
Error codes, lukewarm water or no hot water at all. We find the cause, whether it’s scale, a sensor or ignition, and fix it. |
Tankless Water Heater Maintenance
OUR Tankless Water Heater SERVICES
Since “Tankless Water Heater” is a leaf node, here’s a complete overview: Tankless water heaters heat water directly without storing it in a tank, delivering hot water the moment you need it. CR Plumbing, Heating and Air Conditioning specializes in retrofitting existing homes across Argyle and the surrounding area with tankless systems that provide endless hot water while using less energy. Whether you’re looking to eliminate morning shower delays or reduce your monthly energy bills, we help you select the right model based on your home’s size and hot water needs. Our technicians ensure proper gas or electrical setup, venting, and drainage for optimal performance. We also handle warranty registration and routine descaling services.
Call now for fast plumbing fixes and dependable comfort—one trusted team, one easy call!
Tankless Water Heater Repair, Installation and Maintenance
Signs Your Tankless Water Heater Needs Attention
The big one is water that’s lukewarm or swings between hot and cold mid-shower. After that, look for an error code on the display, hot water that takes forever to arrive, a unit that clicks and tries to fire but doesn’t, or reduced flow at the tap. Most of these trace back to scale or a sensor problem, and most are fixable. One safety note: if you smell gas near a gas unit, leave the house and call your gas utility first.
Tankless Water Heater Repair
Tankless units are compact, but there’s a lot going on inside them. A tankless water heater technician has to read error codes, check flow and gas pressure and know what each sensor does. The usual suspects are scale in the heat exchanger, a clogged inlet filter, a dirty flame sensor, a blocked vent or condensate drain, and a failed flow sensor or thermistor. Then there’s the “cold water sandwich,” where you get a short blast of cold between two hot draws. That’s often a flow or setting problem, not a defective unit.
Bring us the code if there’s one. We’ll find the cause and tell you what it takes to fix. If the heat exchanger has failed on an older unit, we’ll tell you that too.
Tankless Water Heater Installation
The unit you choose matters less than getting it sized right. We look at how many fixtures run at the same time (a shower, a dishwasher and a washing machine, say) and how much the water has to be heated. Water here arrives warmer than in colder states, so a unit can often keep up with less heating power than you’d expect. Then we mount it, run the gas line or electrical supply, install the venting, set up the condensate drain where it’s needed, add service valves for easy flushing and test it. We also handle the permit.
Gas or Electric Tankless?
Gas units are the usual pick for whole-home hot water. Electric units are simpler to vent, but they pull a lot of power. Here’s what each one asks of your house:
| Gas Tankless | Electric Tankless | |
|---|---|---|
| What it needs | A larger gas line than a tank heater, venting through the wall or roof, a power outlet, and a condensate drain on high-efficiency models | Several heavy-duty circuits, often a panel upgrade, and no venting |
| Good for | Whole-home use and bigger households | Smaller homes, point-of-use heaters and homes without gas |
| Watch out for | Gas line size and the vent route | Electrical capacity at the panel |
Replacing a tank with a tankless usually means upsizing the gas line or adding venting, so it costs more up front than a like-for-like tank swap. We’ll walk through what your house needs before we quote.
Tankless Water Heater Replacement
A tankless unit that’s been maintained can last 15 to 20 years. If yours is older than 12 or so and the heat exchanger is cracked or leaking, replacement usually beats another repair. If it’s younger, repairing it is often the better call. We’ll give you both numbers when it’s close. If you’d like to compare against a standard tank, see our tank water heater page.
Tankless Water Heater Maintenance
In hard-water North Texas, this is the visit owners skip most often. Once a year, we flush the heat exchanger with a descaling solution, clean the inlet filter, check the vent and condensate drain and run a diagnostic. That takes about an hour and clears out the mineral scale before it clogs anything. Skipping it is the most common reason tankless units fail early. Many manufacturers also expect it for warranty purposes.
Where We Work
We install and repair tankless water heaters from our base in Argyle to Fort Worth, Westlake, Southlake and Flower Mound. We also work in Denton, Lewisville, Coppell, The Colony, Grand Prairie, Grapevine, Keller, Carrollton, Irving and Arlington. See the full list on our service areas page.
Frequently Asked Questions
How does a tankless water heater work?
When you open a hot tap, a flow sensor notices the water moving and fires the unit. A gas burner or electric elements heat the water as it passes through a heat exchanger, and the unit shuts off when you close the tap. There’s no stored water, so nothing sits around heated.
What are the benefits of switching to a tankless water heater?
Hot water that doesn’t run out, no standby heat loss, a unit that mounts on the wall, and a longer life, typically 15 to 20 years against 8 to 12 for a tank. The tradeoffs are a higher install cost and the yearly maintenance that hard water calls for.
How long do tankless water heaters typically last?
Around 15 to 20 years if they’re flushed every year. In hard water, skipping that can cut it short.
Can a tankless water heater supply enough hot water for my whole home?
Yes, if it’s sized right. A tankless unit is limited by flow, in gallons per minute, not by tank size. A properly sized one handles several showers at once, but an undersized one will struggle. We size it by what runs at the same time in your house. Very large homes sometimes use two units.
What maintenance does a tankless system require?
Once a year, we flush the heat exchanger with a descaling solution, clean the inlet filter and check the vent and condensate drain. In hard water, that’s the one thing that matters most.
Will a tankless water heater reduce my energy bills?
Usually, yes. There’s no tank to keep reheating all day. How much you save depends on how much hot water you use, and lower-use households tend to save more. For a very high-use home, the difference is smaller.
Should I choose gas or electric?
If your home has gas, a gas unit is the usual choice for whole-home hot water. Electric units work for smaller homes or places without gas, but they need a lot of electrical capacity. The table above shows what each one asks of your house.
Why is my tankless water heater showing an error code?
Codes point to a problem with ignition, flow, a sensor, the vent or scale. Check the code on the display or app, turn the unit off and on once, and if it comes back, call us. If you smell gas, leave the house and call your gas utility first.
How it Works
Assessment
We evaluate your household size, hot water demand, and existing system.
Implementation
Install and connect tankless heater with code-compliant fittings.
Quality Check
Flower Mound
3121 Cross Timbers Rd #11 Flower Mound, TX 75028
North Richland Hills
4925 Davis Blvd Suite 201 North Richland Hills, TX 76137
Richland Hills
3113 Elm Park St. Richland Hills, TX 76118
Argyle, TX
2231 Berniece Jones Rd. #103 Argyle, TX 76226