Tankless Water Heater Installation in New Braunfels

Typical range

about $1,600–$4,500 installed

Conversion time

4 to 6 hours

Lifespan

15 to 20 years

Descale

at least once a year

A tankless heater warms water only as it flows, so the shower doesn't run out halfway through the third person in line. Tell us about your home and you'll get a call right back to size the tankless water heater and plan the switch. You'll get a price before any work starts, whether it's a first install, a conversion from a tank, or a worn-out tankless.

Why do homeowners switch to tankless?

The draw is simple: hot water that keeps coming. There are practical reasons too.

• No more running out: back-to-back showers and a full bathtub stay hot.
• Space: a wall-mounted tankless water heater about the size of a suitcase frees the closet or garage corner.
• Longer life: A.O. Smith and Rheem cite 15 to 20 years (opens in a new tab), against a typical 8 to 15 for a tank.
• No tank to split: nothing stores 50 gallons of water waiting to leak into an attic.
• Weekend homes: no tank heating water all week for nobody.

Efficiency matters less than most ads suggest. ENERGY STAR gas tankless water heaters (opens in a new tab) carry a Uniform Energy Factor (UEF) of at least 0.95, and the saving depends on how much hot water the house actually uses.

Is tankless right for your home?

Tankless suits most homes, but not every home suits every unit. These are the signs it fits well, and the ones to talk through first.

• Good fit: the home has natural gas, the household uses a lot of hot water, or the old tank is due anyway.
• Talk it through: an all-electric home with a small or full panel, where a whole-house electric unit may need a costly upgrade.
• Talk it through: a far bathroom that already waits a long time for hot water, since tankless doesn't fix a long pipe run on its own.
• Not a fit: a budget that can only cover a like-for-like tank today. A tank replacement is the quicker, lower-cost path.

Household size is the other half. A couple in a small home gains less than a family of five whose 50-gallon tank empties before the last shower.

Does tankless work with New Braunfels hard water?

It does, with care. New Braunfels water is very hard, and a tankless heat exchanger is a narrow passage that scale loves. New Braunfels Utilities (NBU)'s 2019 water quality report (opens in a new tab), based on 2018 data, listed 8.1 to 19.5 grains per gallon, averaging 15.1; NBU's later reports publish no figure.

Left alone, that mineral plates the coil. The warning signs are error codes, cycling under load, and eventually a dead exchanger. Three things make tankless work here anyway:

• Isolation valves: service valves with flush ports, fitted at install. A quote without them is worth questioning.
• A descale at least yearly: Navien (opens in a new tab), Rinnai and Rheem all call for it, and once a year is the minimum in water this hard.
• A softener or scale filter: it stretches the time between descales; weigh the cost before deciding.

Not every home here drinks NBU water. Meyer Ranch has its own utility district and western River Chase runs on wells, so ask how hard your own supply is.

Gas, electric or propane tankless

The fuel your home already has decides most of this. CenterPoint provides natural gas to many parts of the city, but not all of it.

• Gas whole-house: the usual choice where there's natural gas. It heats far more water per minute but often needs a larger gas line and its own vent.
• Electric whole-house: no vent or gas pipe, but a very heavy electrical draw. Many panels lack the room, and the upgrade can cost as much as the heater.
• Point-of-use electric: one small unit at a far sink or bath, a sensible middle ground for all-electric homes.
• Propane: workable on acreage once the tank and regulator are confirmed.

Only Veramendi has a confirmed natural gas provider (CenterPoint). Anywhere else, look for a gas meter before assuming; the gas and electric page walks through it.

How much does tankless installation cost?

Most homeowners pay about $1,600–$4,500 for a tankless water heater, installed. Extras such as the permit, an electrical upgrade or haul-away of the old tank typically add a few hundred dollars more.

Tankless ranges are compiled from national cost guides and rounded; read how they are calculated.

A conversion from a tank sits above a tankless-for-tankless swap, because the gas line, vent or circuit usually changes. NBU offers no water heater rebate of any kind, tankless included.

Where the heater goes matters too. A wall close to the old tank and the gas meter keeps the gas line and vent runs short, and short runs keep the price down.

What a tankless install includes

Sizing is by flow, not gallons. Add up the fixtures that run at once on a busy morning; the unit has to cover that while lifting cold winter water to a comfortable temperature.

1. Call or text (830) 243-5644, or fill in the quote form. Say how many bathrooms you have and which fuel the home uses.
2. You'll get a call right back to size the heater by flow and check the gas line or panel.
3. You'll get a price before any work starts, with the permit and any upgrade listed separately.
4. Old tank out, unit on the wall. Gas line upsized or circuit run, then the vent, isolation valves and condensate drain.
5. Fired, adjusted and permitted. A conversion typically takes 4 to 6 hours.

Undersizing is the most common tankless complaint: a shower goes lukewarm the moment the dishwasher starts. Size for the busiest morning, not the average one.

Tankless across New Braunfels

Tankless requests lead from newer homes: model homes at the Overlook at Creekside, builder upgrades in Veramendi, whole-house tankless heaters for large custom homes in Copper Ridge and Vintage Oaks, retrofits in Havenwood at Hunters Crossing, and weekend places around Canyon Lake. Anywhere in 78130, 78132 or 78133, get your price.

Comparing tankless with a tank first? Read tankless vs tank, or browse the water heater FAQ for permits and pricing.

Last updated: October 2, 2026