Tankless Water Heater Services
Tankless Water Heater Services in Austin, TX
Endless hot water, lower energy bills, and a 20+ year lifespan. Our master plumbers install, service, repair, and descale all major tankless brands — gas and electric.
Why Go Tankless?
A tankless water heater heats water on demand — there's no storage tank, no standby heat loss, and no running out of hot water. When you turn on a faucet, cold water flows through a high-efficiency heat exchanger and comes out hot instantly. When you turn it off, the unit stops. That's why tankless units can cut energy bills by up to 30% compared to a standard tank.
Tankless units also last longer — 20+ years versus 8–12 for a tank — and take up a fraction of the space, freeing up garage or closet square footage. For Austin homes with hard water, the key is proper installation and annual descaling: the heat exchanger needs to be flushed once a year to prevent mineral buildup that kills efficiency and triggers 'no hot water' calls.
ADL Plumbing handles the full tankless lifecycle: new installation (including gas line upgrades, venting, and electrical), gas-to-tankless conversions, repair of all major brands, and the annual descaling service that keeps your unit efficient and under warranty.
Is Tankless Right for Your Home?
Our Tankless Process
Demand Assessment
We calculate your home's peak hot water demand — how many fixtures might run simultaneously — and size the tankless unit accordingly. An undersized tankless is worse than a tank; we make sure yours is right.
Conversion Planning
For tank-to-tankless conversions, we assess gas line capacity, venting requirements, and electrical needs. We plan every modification before we start, so there are no surprises.
Expert Installation
We install the unit, run gas and water lines, install proper venting, make electrical connections, and pressure-test everything — all permitted and to code.
Annual Descaling
We provide and recommend annual descaling service to flush the heat exchanger, preventing mineral buildup that kills efficiency and voids warranties.
Tank vs. Tankless
Tank Water Heater
The familiar, budget-friendly workhorse. Lower upfront cost, simple to service, stores 30–80 gallons of hot water.
- Lower upfront investment
- Simple, fast repairs
- Works during power outages (gas)
- Familiar to every plumber
- Reliable 8–12 year lifespan
Tankless Water Heater
On-demand, endless hot water with a smaller footprint and higher efficiency. Higher upfront cost, lower monthly bills.
- Endless hot water on demand
- 20+ year lifespan
- Lower energy bills (up to 30%)
- Saves floor space
- No standby heat loss
Tankless Water Heater Experts in Austin, TX
Austin's hard water is the single biggest factor in tankless performance and longevity. The minerals in our water — calcium and magnesium — build up inside the heat exchanger over time, insulating it from the water and reducing efficiency. Without annual descaling, a tankless unit in Austin will lose efficiency, trigger error codes, and eventually fail — long before its 20-year design life.
We install and service tankless water heaters across Austin, Round Rock, Pflugerville, Georgetown, Buda, Kyle, and Del Valle. Our master plumbers are certified on all major brands — Rinnai, Navien, Rheem, Takagi, Bosch, and more — and we provide the annual descaling service that keeps them running.
Considering a tankless water heater in Austin, TX? We'll help you decide if it's the right choice for your home and install it to perform for decades. Call (512) 965-9154.
Tankless Water Heaters FAQ
How much does a tankless water heater installation cost?
The cost depends on the unit size, whether it's a new installation or a tank-to-tankless conversion (which requires gas line, venting, and electrical upgrades), and the brand. We give you a flat upfront price that includes the unit, permit, all modifications, and old-unit removal — no surprise add-ons.
Will a tankless water heater provide enough hot water for my whole house?
Yes — if it's properly sized. We calculate your peak demand (how many fixtures might run at once) and match the unit's flow rate in gallons per minute. A correctly sized tankless unit delivers endless hot water to every fixture in your home simultaneously.
How often does a tankless water heater need descaling?
In Austin's hard water, we recommend annual descaling. The service flushes the heat exchanger with a descaling solution to remove mineral buildup. Skipping it is the #1 cause of premature tankless failure and warranty denial in Central Texas.
Can you convert my tank water heater to tankless?
Yes. Tank-to-tankless conversions are one of our most common installations. We assess your gas line capacity (tankless units need more gas volume than tanks), plan the venting, handle any electrical requirements, and install the new unit — all under one permit.
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Plumbing Emergency?
We answer 24 hours. 7 days. Every day.
Burst pipe, no hot water, or a slab leak won't wait — and neither do we.