Licensed Austin Plumbers Since 2012·License M40109·Same-Day Scheduling·Hablamos Español
Water heater installation by Rooter-Man of Austin
Home/Services/Tankless Water Heaters

Tankless water heaters in Austin, installed and maintained right.

Endless hot water and lower bills, if the unit is sized, vented, and maintained for Austin's hard water. We install, repair, and descale tankless systems, and we tell you honestly when a tank is still the better buy.

New customers save 5% $100 off water heater install Mention online. Valid through Dec 31, 2026. Cannot be combined.
Licensed M40109 · Warranty-Backed · Bilingual · Calls Answered 24/7
Licensed M40109Texas-licensed plumbing pros
Local Since 2012Family-owned in Greater Austin
Same-Day SchedulingOn the schedule today when we can
Warranty-BackedEvery job stands behind our guarantee
Hablamos EspañolFull bilingual service
What we handle

Tankless Water Heaters, end to end.

Tankless installationGas and electric tankless units sized for the household and installed to code, with $100 off.
Tankless repairError codes, ignition problems, and fluctuating temperature diagnosed and fixed.
Descaling & maintenanceAnnual flushing that keeps hard-water scale from choking the heat exchanger.
Tank-to-tankless conversionGas line, venting, and electrical requirements evaluated honestly before you commit.
Commercial tanklessHigh-demand systems for restaurants and multi-unit properties.
Honest fit adviceIf tankless does not fit your home or your usage, we say so and show you the math.
Water heater installed by Rooter-Man of Austin, real job photo
The Austin angle

Tankless in Austin needs a maintenance plan.

A tankless unit heats water on demand through a narrow heat exchanger. Austin's hard water leaves scale in that exchanger, and without an annual descale the unit loses efficiency, throws error codes, and fails early. Most tankless complaints we see come down to skipped maintenance or an undersized install.

We size the unit to how your household actually uses hot water, confirm the gas supply and venting can support it, and set you up on a flushing schedule. If a conventional tank is still the smarter spend for your home, we tell you that first.

How it works

Simple, honest, same-day when we can.

1

Call Us

Our line is answered around the clock at (512) 645-1441. Tell us what is going on and we give you the next available options, often same-day.

2

Upfront Diagnosis & Pricing

A licensed plumber inspects the real problem and explains it plainly, English or Spanish. You see the price before any work begins. No surprises, no upsell pressure.

3

The Job Done Right

We do the work cleanly and to code, test it, and leave your space the way we found it. Every job is backed by our warranty.

Neighbors trust us

What Austin homeowners say about Rooter-Man.

★★★★★

"Josh and his team did a great job replacing our water heater. We called on a Saturday, and by Sunday afternoon we had a new water heater installed. Thank you!"

Gabe R.
★★★★★

"Highly recommend. Joshua explained everything very clearly and gave great advice. He updated our water heater so it was to code, and the work was great!"

Katie G.
★★★★★

"Eddie made time and came over the same day. He was thorough in diagnosing my water heater issue and finding its root cause. If I ever have a plumbing issue, I'm definitely calling Rooter-Man."

William N.
4.9★★★★★1,200+ Google reviews
Read our reviews on Google Yelp All reviews
Save on your next service

Current Rooter-Man offers.

Rooter-Man mascot
$100 OFF

Water Heater Install

Replacing or installing a water heater? Take $100 off with Rooter-Man.

Cannot be combined with any other coupon. Restrictions may apply. Valid Jan 1 through Dec 31, 2026. Call to Claim (512) 645-1441
5% OFF

For New Customers

New to Rooter-Man of Austin? Save 5% on your first service.

Cannot be combined with any other coupon. Restrictions may apply. Valid Jan 1 through Dec 31, 2026. Call to Claim (512) 645-1441
Good to know

Frequently asked questions.

Is a tankless water heater worth it in Austin?+

For many homes, yes: endless hot water, lower standby losses, and a longer service life. The catch is hard water. A tankless unit here needs annual descaling to keep working the way it should. We walk through your usage and the install requirements and give you a straight answer.

Why does my tankless water heater go cold or throw a code?+

The most common causes are scale in the heat exchanger, a clogged inlet filter, ignition or gas supply problems, or a unit that is undersized for simultaneous use. We diagnose the actual cause before recommending a repair.

Can I switch from a tank to tankless?+

Often, yes. Gas tankless units usually need a larger gas line and different venting, and electric units need significant electrical capacity. We evaluate all of it up front so there are no surprises in the quote.

Is there $100 off a tankless install?+

Yes. The $100 off water heater install applies to tankless installs too, valid through Dec 31, 2026. It cannot be combined with other coupons.

Can I call any time?+

Yes. Our phone line is answered 24/7, so you can call day or night to describe the problem and get on the schedule. Our crews run during regular service hours, and we work to get a licensed plumber out at the first available appointment, same-day whenever possible.

Ready when you are

Endless hot water, done right.

Licensed M40109, family-owned since 2012. Tankless sized and installed to code, maintained for hard water, and backed by our warranty. $100 off installs through 2026.

Calls answered 24/7 · Hablamos Español
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