Water Heater Pros DFW
(214) 367-6309

24/7 Emergency · Typically under 60 minutes

Tankless Water Heater Installation in Dallas, TX

Convert to tankless or install new. Sized right the first time. Serving Dallas and surrounding DFW cities.

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  • Typically under 60 minutes response (most calls)
  • Licensed Texas master plumbers in your area
  • Tank, tankless, gas, electric. Every brand.
  • 24/7 Emergency service

Hot water out? Call now. 24/7 Emergency, answered live.

(214) 367-6309

  • Licensed Texas plumbers

    Licensed Texas master plumbers in your area

  • Insured & bonded

    Liability and bond on every job

  • Live phones, 24/7

    No voicemail. Real person, every call.

  • Typically under 60 minutes

    Most jobs on-site within the hour

  • 24/7 Emergency

    Nights, weekends, holidays

Dallas tankless water heater installation: what you need to know

Tankless conversions and new installs done right. The plumber sizes the unit to your actual hot water needs, runs the gas line and venting to spec, and pulls the permit. Startup and walkthrough included.

Tankless installation done right is straightforward. Tankless installation done wrong is a yearly headache for the next 15 years. The difference is sizing, gas line capacity, venting, and pulling the permit. We dispatch licensed Texas plumbers who do tankless installs every week, not once a year, and who know the DFW code requirements city by city.

Sizing is the part most homeowners miss. Tankless units are rated by gallons per minute (GPM), not gallons stored. The plumber calculates your peak demand based on bathrooms, kitchen, laundry, and incoming water temperature in the winter (DFW gets cold groundwater in January and February that affects sizing). Get the size wrong, and the unit runs cold mid-shower for the next 15 years. Get it right, and you'll never run out.

Tank-to-tankless conversion adds a few requirements over a tank install. The gas line often needs to be upsized to handle the higher BTU draw. Venting changes from atmospheric to direct-vent or power-vent. Most cities require a pulled permit and inspection. The plumber handles all of it. Total install runs 4 to 8 hours depending on the conversion complexity.

Don't wait. Talk to a plumber now.

Call now: (214) 367-6309 Or request a callback

Whatever you've got, we handle it

The plumber works on every common setup. If yours isn't listed, call. Chances are they handle it too.

  • New Tankless Installation

    New construction, addition, or first-time install. The plumber pulls the permit, sizes the unit, runs the gas and vent, and handles the inspection.

  • Tank-to-Tankless Conversion

    Replacing an existing tank with a tankless. Gas line resize, vent reroute, expansion tank update. Permit and inspection included.

  • Whole-House vs Point-of-Use

    Whole-house is the standard for residential. Point-of-use units are sometimes added at a far bathroom or addition where running a long hot-water line doesn't make sense.

  • Gas vs Electric Tankless

    Gas tankless is the default in DFW because of capacity. Electric tankless works for point-of-use or smaller homes. The plumber will tell you which fits your situation.

How it works

  1. 1

    Call or request a callback

    Tell us what's wrong, where you are, and how urgent it is.

  2. 2

    Get matched to a licensed TX plumber

    In your city, usually dispatched within minutes. Typically under 60 minutes on-site for most calls.

  3. 3

    On-site quote and repair

    Diagnostic up front, transparent pricing, most jobs finished the same visit.

Need tankless water heater installation? Request a callback.

We'll match you with a licensed plumber in your city, usually within 15 minutes during business hours.

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Tankless Water Heater Installation: cities we serve

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Don't see your city? Call us anyway. We cover most of DFW.

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Tankless Water Heater Installation: common questions

Quick answers about service from Water Heater Pros DFW.

How long do water heaters last in DFW?

Tank water heaters last 8 to 12 years. Tankless go 15 to 20 if you flush them every year. DFW's hard water knocks 1 to 3 years off either if the unit never gets serviced. If yours is past 10 and acting up, you're better off replacing it than throwing money at repairs.

Should I repair or replace my water heater?

Under 10 years old, one failed part? Repair it. Past 10 years with the tank itself leaking, multiple repair calls, or your gas bill creeping up? Replace it. The plumber on the call will tell you straight which side you're on.

Why is my water heater making noise?

Popping or rumbling? That's sediment trapped under the heating element, flashing to steam. Real common in DFW because of the hard water. A flush usually clears it. If the noise comes with rusty water or shorter showers, the tank's probably done.

Why don't I have any hot water?

Gas unit? Probably a pilot light, thermocouple, or gas valve. Electric? Check the breaker first, then the heating element. Either way a licensed plumber can tell you in 30 minutes. Most fixes are done the same visit.

Why does my hot water smell like rotten eggs?

Sulfur bacteria reacting with the magnesium anode rod inside your tank. Swap the anode for an aluminum/zinc one and the smell usually goes away. If the cold water smells too, the problem is your water supply, not the heater.

Why is my T&P (temperature & pressure) valve leaking?

A T&P valve that drips usually means high water pressure or thermal expansion. The fix is normally an expansion tank. Leaking hard and constant? Don't touch it. That valve is the only thing keeping your tank from blowing up. Call a plumber today.

What size water heater do I need for my DFW home?

Rule of thumb: 40-gallon tank for 1 to 3 people, 50 for 3 to 4, 65 to 80 for 5 or more. Tankless is sized by gallons-per-minute, not gallons stored. The plumber will size yours based on your bathrooms, fixtures, and water temperature coming in.

How does DFW's hard water affect water heaters?

DFW water is loaded with calcium and magnesium. That stuff settles at the bottom of tank heaters and crusts up the heat exchangers in tankless units. Result: less efficiency, more popping, shorter lifespan. Flush your tank once a year. Descale your tankless once a year. Both add years.

Can I install a water heater myself?

Don't. Texas requires a licensed plumber for water heater installs, and most DFW cities require a pulled permit too. DIY voids your home insurance and fails inspection at resale. For gas units it's genuinely dangerous. The few hundred bucks you save isn't worth the risk.

Still have questions? Most answered in 60 seconds on the phone.

Call now: (214) 367-6309 Or request a callback

Need tankless water heater installation now? Call. Most jobs on-site within the hour.

(214) 367-6309