Circulates white vinegar through the heat exchanger for 45 to 60 minutes to dissolve calcium scale. A garden-hose flush does not do this properly, and it is the difference between a real descale and a rinse.
Tankless Water Heater Services New Braunfels TX homeowners call first
When your tankless unit quits mid-shower, Comal Crest Plumbing delivers tankless water heater services New Braunfels TX residents rely on for fast, code-correct fixes. We handle tankless water heater repair New Braunfels TX, full installs, and annual descaling for homes across Comal County.
Serving new braunfels and nearby areas.
How big is the tankless job?
Repair
A failed part like an igniter, flow sensor, or gas valve gets replaced and tested.
- 1. Descale Annual flush of the heat exchanger, inlet filter clean, and a temperature test.
- 2. Repair A failed part like an igniter, flow sensor, or gas valve gets replaced and tested.
- 3. Install New unit, venting, gas line, and permit, planned in writing first.
Drag the needle to compareTouch and drag the needle
- 30Services from one local team
- 20Areas served around new braunfels
- Test firstWe measure flow and temperature before quoting.
- Flat priceYou approve the number before we start.
What is included in a tankless service call
Every tankless service call includes a full diagnostic, a written price, and a test run before we leave.
Work order
Tankless Water Heater Services- Full diagnostic and error-code read: We pull the fault history, check inlet and outlet temperatures, measure flow in gallons per minute, and test gas pressure at the unit. You get the findings explained in plain language, not a printout you have to decode.
- Heat exchanger descaling: We isolate the unit, circulate white vinegar through the exchanger with a recirculating pump for 45 to 60 minutes, then flush and neutralize. This is the core of tankless water heater maintenance New Braunfels Texas homeowners need every year.
- Inlet filter and flow sensor service: We pull the inlet filter, clean or replace it, and test the flow sensor. A clogged filter or a fouled sensor is behind a large share of the no-hot-water calls we run in New Braunfels.
- Igniter, flame sensor, and gas valve check: We test the ignition sequence and confirm the flame sensor reads correctly.
- Venting and condensate inspection: We check the intake and exhaust for blockages, confirm the condensate trap drains freely, and make sure the venting meets Uniform Plumbing Code and International Plumbing Code requirements for the unit's BTU rating.
- Temperature and flow test at fixtures: We run hot water at the kitchen, each bath, and any laundry tap, and confirm the unit holds within 2 degrees of setpoint. If a fixture is starving the unit, we find it before we leave.
What the first visit covers
First visit
We read the fault history, measure flow and temperature, inspect the venting and condensate, and explain what we find.
Tankless service for your home
We keep hot water running for New Braunfels households.
No hot water
Diagnose the code and replace the failed part.
Lukewarm showers
Descale the exchanger and restore temperature rise.
Tank to tankless
Swap the old tank and upgrade the gas line.
Annual descale
Flush the exchanger before hard water scales it.
Tankless service for your business
We keep hot water flowing for New Braunfels businesses.
Restaurants
Multi-unit banks sized for peak demand.
Salons
Continuous hot water through back-to-back clients.
Small hotels
Scheduled service so guests never lose hot water.
Tankless Water Heater Services New Braunfels TX explained
A tankless unit is a machine, and New Braunfels water is hard on it. Servicing it on schedule costs far less than replacing a scaled-out heat exchanger.
Tankless water heater services New Braunfels TX is the repair, installation, and maintenance work that keeps a tankless unit heating water on demand instead of storing it in a 40- or 50-gallon tank. That covers everything from clearing a scale-clogged heat exchanger to running a new gas line and venting for a Navien or Rheem replacement. We test flow rates, check the igniter and flame sensor, flush the exchanger with white vinegar, and confirm the unit holds its rated temperature rise before we pack up.
Calcium builds inside the heat exchanger, flow drops, and the burner short-cycles until you get lukewarm water or an error code. If you have been searching for tankless water heater services in New Braunfels TX near me and keep landing on call centers, we are the local shop that actually stocks the descaling kit and the common igniter and flow-sensor parts on the truck.
- What it is
- Repair, descaling, and installation for tankless water heaters.
- When it helps
- No hot water, lukewarm showers, error codes, or a new install.
- What you get
- A diagnosis, a flat price, and a tested unit.
How our tankless service call runs
Every job follows the same five steps, whether it is a 90-minute descale or a full replacement.
Tools and methods we use on tankless units
Each method answers a different question. Together they leave very little to guess.
Makes leak-free copper and PEX connections on gas and water lines without an open flame. Faster and safer in a tight utility closet, and it lets us tie into existing pipe cleanly.
Pinpoints leaks under a unit or behind a wall without tearing out drywall. We use it on every call where water is showing up but the source is not obvious.
Reads combustion air and exhaust on condensing units to confirm the unit is burning clean and the venting is correct. Required for a proper commissioning on a new install.
Standard gear for gas and water connections on a tankless swap. We keep both on the truck so a stuck fitting does not turn into a second trip.
When New Braunfels homeowners call us
A family of five in Veramendi runs out of hot water every school morning, and the tankless unit throws a code by the third shower.
We measure the unit's flow rate and gas pressure, descale the exchanger, and check whether the unit is sized for three simultaneous…
HomesA homeowner in Gruene is converting a garage utility closet and wants the old 50-gallon tank gone to free up space for a water softener.
We remove the tank, run new venting and a gas line upgrade for a Navien condensing unit, and tie in a softener…
HomesA property manager near Downtown New Braunfels has three rental units with tankless heaters that keep failing inspections and generating tenant complaints.
We put all three units on a yearly descaling schedule, replace the inlet filters, and correct the venting on one unit that…
BusinessesA homeowner in River Chase wakes up to no hot water and a code 11 on a Rheem unit that is six years old.
We come out the same morning, find a failed igniter and a scaled exchanger, replace the igniter, and descale the unit.
Homes
How tankless service runs in New Braunfels
New Braunfels sits on some of the hardest water in Central Texas, and that shapes every tankless job we run.
Downtown New Braunfels
Older homes with galvanized supply lines and tight utility closets. Tankless installs here often need a gas line upgrade and creative venting to meet code.
Gruene
Historic building stock means venting clearances and condensate routing need extra attention. We plan the vent path before we order the unit.
River Chase
Larger homes with high fixture counts. Sizing matters here, and we measure flow demand before recommending a unit.
- Downtown New Braunfels
- Gruene
- River Chase
- Vintage Oaks
- Veramendi
From problem to finished result.
Slide to compare the photo with an illustrative inspection view. It is generated from the photo, not a measurement.
PhotoScaled Navien back to full flow
Before: A six-year-old Navien in Gruene was throwing code 11 and delivering lukewarm water. The homeowner had never descaled it, and the heat exchanger was choked with calcium from hard New Braunfels water.
After: We descaled the exchanger with a recirculating pump, replaced the inlet filter and igniter, and tested the unit at 8.2 gallons per minute with a 65-degree temperature rise. The code cleared and hot water held at 120 degrees.
Tank to tankless in River Chase
Before: A River Chase family of five had a 50-gallon tank that ran out of hot water by the third morning shower. The utility closet was cramped and the gas line was sized for the old tank.
After: We removed the tank, upgraded the gas line, installed a Rheem condensing unit with new venting, and added a water softener ahead of the heater. The closet gained 11 square feet and hot water now holds through all three showers.
Rental units off the emergency list
Before: A Downtown New Braunfels property manager had three tankless units failing inspections and generating tenant no-hot-water calls every few months. None had been serviced in over two years.
After: We descaled all three, replaced the inlet filters, and corrected the venting on one unit that was not to code. All three passed inspection, and the manager has had zero tenant hot-water complaints in over a year.
Tankless problems we fix every week
Most tankless calls come down to five failures, and four of them trace back to New Braunfels hard water.
Unit runs but water stays lukewarm
Left alone, the exchanger can crack and total the unit.
Error code and no hot water at all
Codes 11, 12, and 52 on Navien units usually point to ignition or flow faults.
Water pooling under the unit
A leak can come from a compression fitting, the condensate trap, or a cracked heat exchanger.
Unit fires when no one is using hot water
A running toilet or a failed recirculation pump can trigger the heater constantly.
Not enough hot water for two showers
An undersized unit or a restricted gas line cannot keep up with demand.
Why New Braunfels homeowners go tankless
A tankless unit done right pays you back in endless hot water, lower gas bills, and a footprint small enough to free up a closet.
Endless hot water
A properly sized tankless unit delivers continuous hot water at 120-140 degrees, so back-to-back showers, a load of laundry, and the dishwasher can all…
Lower energy bills
Tankless units only fire when you open a tap, which cuts standby heat loss that a tank loses 24 hours a day.
Reclaims floor space
Wall-mounted units free up 9 to 12 square feet of garage or utility closet space a tank used to eat.
Longer service life
With annual descaling, a tankless unit lasts 20 years or more versus 8 to 12 for a tank.
What you get in writing
Clear records you can keep and share.
Diagnostic findings
The fault code and what caused it.
Flat price quote
The number you approve before work starts.
Service record
The descale date written on the unit.
16 years on New Braunfels water heaters
Comal Crest Plumbing has been fixing and installing water heaters in Comal County since 2010.
Fault history
The unit's stored error codes tell us what failed and how often.
Flow rate
Gallons per minute at the outlet shows whether the exchanger is scaled.
Gas pressure
Pressure at the unit confirms it can fire at full rating.
Is your New Braunfels area covered?
Type your ZIP code or town. If you are outside the list, call and ask.
new braunfels ZIP codes
- 78132
- 78130
- 78131
- 78135
Towns we serve.
Based in new braunfels and covering the places around it. Pick one for local details.
What New Braunfels customers say
Our Navien started throwing an error code and we had no hot water for two days. Comal Crest came out the same afternoon, pulled the unit apart, and found the heat exchanger scaled solid. They also showed me how to check the filter myself between visits.
We replaced a 12-year-old tank with a tankless unit and Comal Crest handled the whole thing, including the new venting and the gas line upgrade. They gave us a written price before starting and it did not change.
I manage several rental units and the tankless heaters were a constant headache until we put them on a yearly descaling schedule with Comal Crest. They show up when they say they will, send a photo report after each service, and I have not had a single no-hot-water call from a tenant in over a year.
Tankless water heater questions we hear every week
Short answers for the first few minutes. The team can cover the rest.
Still have a question?
Describe what you are seeing and we will point you to the right next step.
(737) 707-1110A standard descale is on the low end. A heat exchanger replacement or a swap from tank to tankless sits at the top. You get the exact price in writing before we start.
Comal Crest Plumbing does, and we have been doing it in Comal County since 2010. If you want a local shop instead of a national call center, call us at (737) 707-1110.
Once a year, and in New Braunfels we recommend doing it each spring before the summer demand hits. Hard Hill Country water deposits calcium in the heat exchanger fast, and a yearly tankless water heater descaling New Braunfels Texas flush keeps the unit at its rated flow. Skip two years and you risk a clogged exchanger, error codes, and a repair bill that costs more than three descales.
Yes. We keep same-day slots open for no-hot-water calls across New Braunfels and the surrounding ZIP codes, including 78130, 78132, and 78135. We text you a window and an arrival estimate.
Other work we handle alongside tankless service
Other services from the same team.
Get tankless water heater services New Braunfels TX today
(737) 707-1110No hot water is not a wait-until-Monday problem.
Call Comal Crest Plumbing
Reach us at (737) 707-1110 any time, day or night. For standard repairs we book same-day slots and call ahead with a real arrival window. For emergencies, we dispatch immediately. You can also email info@comalcrestplumbing.com and we will get back to you the same business day.