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Customer Approved Since 1983 — Family-Owned & Operated

Tankless Water Heater Installation in Arlington, TX

Unlimited hot water, a 20+ year lifespan, and lower energy use. We size, install, and maintain tankless systems built to survive North Texas hard water.

(888) 802-0005
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Tankless in North Texas: What Actually Matters

Tankless water heaters are the right choice for many North Texas homes — but not all of them. The marketing makes them sound like magic: endless hot water, lower bills, a tiny footprint. All of that can be true, but only when the unit is sized correctly for your household, your gas line can deliver enough volume, and your maintenance plan accounts for our hard water. The tankless units that run beautifully for 20+ years are the ones that were sized right and descaled every year.

The single most critical factor here is mineral buildup. Tankless units heat water through narrow passages in a heat exchanger, and those passages scale up far faster in hard water than a tank does. Skip the annual descaling and a tankless unit in a hard-water area will lose efficiency within a couple of years and can fail prematurely. That's why we bring water softening into every tankless conversation — a softener protects the investment and the manufacturer warranty.

We install Navien, Rinnai, and Noritz — the brands that have proven themselves in our conditions. Condensing Navien units are a popular pick for their efficiency and available recirculation. We handle gas line sizing, venting, electrical, condensate drainage, and the permit, so the whole system is done right and to code.

Tank vs. Tankless: The Real Math

A high-efficiency tank costs $1,200–$2,000 installed and lasts 8–10 years in our water. A tankless unit costs $3,000–$5,000 installed and lasts 20+ years with maintenance. For a single person or a couple, the payback on tankless can stretch past ten years — a tank is the better value. For a household of four or more with simultaneous demand (two showers plus the dishwasher), tankless typically pays off in five to seven years through energy savings and skipped replacement cycles.

  • Tankless installation — Navien, Rinnai, and Noritz units sized to your household demand
  • Gas line upsizing — most homes need a larger line to deliver enough BTU for tankless
  • Proper venting — stainless or PVC venting to manufacturer spec, routed to code
  • Recirculation systems — near-instant hot water at distant fixtures
  • Annual descaling — flushing the heat exchanger to keep hard-water scale from killing the unit
Navien tankless water heater installed on a utility wall by Ernie's Plumbing

Quick Info

Typical Cost

$3,000–$5,500

Timeline

1-day install

Warranty

12-yr heat exchanger

Know the Warning Signs

Signs You Need Tankless Water Heater Installation

Catch these early to avoid a bigger, more expensive problem down the line.

Running Out of Hot Water

If your household routinely runs out with a tank, tankless provides a continuous supply — no more timing showers around each other.

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Tank Is 10+ Years Old

If you're due for a replacement anyway, it's the ideal moment to evaluate tankless instead of buying another tank you'll replace in a decade.

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High Energy Bills

Tanks heat and reheat water around the clock. A tankless unit only fires when you open a hot tap, cutting standby energy waste.

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Tight Utility Space

Tankless units mount on a wall and free up the floor space a tank occupies — handy in a packed garage or utility closet.

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Planning to Stay Long-Term

Tankless payback runs about five to seven years. If you're staying 10+ years, the long-term economics strongly favor it.

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Adding a Bathroom or Remodeling

Increasing your home's hot-water demand is a natural trigger to evaluate tankless, which scales to demand without needing a bigger tank.

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Transparent from Start to Finish

How Our Service Works

01

Home Assessment

We evaluate your hot-water demand, inspect gas line capacity, and identify the best unit location and venting route.

02

Right-Size the Unit

We calculate the gallons-per-minute you need at peak simultaneous use. Undersizing is the number-one reason tankless installs disappoint.

03

Professional Install

Gas line upsizing, mounting, venting, electrical, condensate drainage, and recirculation if desired — typically completed in a day.

04

Setup and Education

We program the temperature, walk you through the controller, and set up your annual descaling schedule so the unit lasts.

The Ernie’s Difference

Why the DFW Metroplex Trusts Ernie’s

Proper Sizing, Not Guessing

We calculate your real peak demand. An undersized unit delivers lukewarm water when you need it most — we prevent that.

Gas Line Expertise In-House

Most tankless installs need a gas line upgrade. We handle it ourselves, permit included — no separate gas plumber.

Hard-Water Planning

We always discuss softener protection for the heat exchanger. In our water, that's what preserves the warranty and the unit's life.

Annual Maintenance Program

Our descaling service keeps the unit efficient. Without it, hard water will shorten a tankless heater's life dramatically.

Got Questions?

Tankless Water Heater Installation FAQ

Answers from our master plumbers — based on real questions from the DFW Metroplex homeowners.

A quality tankless installation in the Arlington area runs $3,000–$5,500, depending on the unit (Navien, Rinnai, or Noritz), gas line modifications, venting, and whether you add a recirculation pump. That includes the permit and inspection. We give an exact quote after the home assessment.

Need Tankless Water Heater Installation?

Call us 24/7 for same-day service. Free estimates on all projects. No hidden fees, no surprises — just honest plumbing.

(888) 802-0005

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