Pool Heater Problems We Fix

A heater lets you swim in spring and fall, and keeps a spa warm on cool Hill Country nights. When it stops working, it is usually one of a few common problems.

• Heater will not turn on. Often low water flow, a dirty filter, a bad pressure switch, or a power problem.
• Heater turns on, then shuts off. This can be a dirty filter, a bad sensor, or a gas supply problem.
• Water never gets warm enough. The heater may be too small, scaled up inside, or the thermostat may be off.
• Error code on the screen. We read the code and test the part it points to.
• Clicking, banging, or a burning smell. Turn the heater off and have it checked.
• Water leaking from the heater. Often a cracked heat exchanger or worn fittings.

Hard Water and Pool Heaters

New Braunfels water is very hard. Calcium can build up inside a heater, the same way it does on pool tile. That makes the heater work harder and can lead to early failure. Keeping your water balanced, with calcium tested every week, helps your heater last longer. See water chemistry balancing.

Types of Heaters We Work On

Heater type	How it works	Good for
Gas heater	Burns natural gas or propane	Fast heating, spas, cool months
Heat pump	Pulls heat from the air, uses electricity	Lower running cost in warm months
Solar heater	Uses the sun to warm water	Stretching the swim season

We work on common brands found on local pools, including Pentair, Hayward, Jandy, and Raypak.

Pool Automation Repair

Many pools here have an automation system that controls the pump, heater, lights, and cleaner from a panel or a phone app. When it acts up, the whole pool can stop working right.

We fix:

• Control panels that will not turn things on or off
• Phone apps that stopped connecting
• Failed relays and bad sensors
• Wrong pump and heater schedules
• Freeze protection that does not turn the pump on in cold weather

Check Freeze Protection Before Winter

Freeze protection turns your pump on when the air gets near freezing, so water keeps moving and pipes do not crack. If the sensor or setting is wrong, the pump stays off on a freezing night. We test it so you know it works before the first cold snap.

Heater and Automation Repair Cost

Job	Typical price range*
Service call and diagnosis	$95 – $150
Sensor, switch, or igniter replacement	$200 – $500
Control board replacement	$450 – $1,000
Automation relay or sensor repair	$150 – $450
New gas heater or heat pump, installed	$3,500 – $7,500

*Approximate ranges for the New Braunfels area. Your exact price depends on the brand, model, and parts, and is confirmed before any work starts.

Helpful Pool Guides

Pool freeze protection checklist · Pool opening and closing in Texas

Frequently Asked Questions

Why will my pool heater not turn on?

The most common cause is low water flow from a dirty filter or full baskets. Other causes include a bad pressure switch, a tripped breaker, or a gas supply problem.

Is it worth repairing an old pool heater?

If the heater is under about 8 to 10 years old and the problem is a sensor, switch, or igniter, repair usually makes sense. If the heat exchanger is cracked or the heater is very old, replacing it is often the better deal.

Gas heater or heat pump: which is better here?

A gas heater warms water fast and works in any weather. A heat pump costs less to run but works best when the air is warm. Many owners here use a heat pump to stretch the swim season and gas for a spa.

How do I know if my freeze protection works?

On many systems you can set the freeze temperature higher than the current air temperature and see if the pump turns on. We test this during a visit so you know it works before winter.

Do you repair pool automation apps and panels?

Yes. We repair control panels, relays, sensors, and app connection problems, and reset schedules for the pump, heater, and lights.

Related Services

Pool pump repair · Pool equipment repair · Salt water pool service · Filter cleaning

Get Your Heater Checked

Tell us the heater brand and what it is doing, or the error code on the screen. We will send a price range and next steps.

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