Pool Heater Repair Cost
Pool heater repairs run $200–$900 for most faults, and considerably more for a heat exchanger. That last one is usually the point at which replacement becomes the better value.
Typical national range
$200–$900
Common single-component heater repairs including a service call — igniter, sensor, control board or similar. Heat exchanger work runs considerably higher.
What this project needs measured
Measurements are only requested when they change the price of the work you selected. Everything below is collected inside the estimator — you can enter dimensions you already know or measure as you go.
Required
No measurement required
This project is diagnosed from symptoms and equipment details rather than dimensions.
Cost by fault
| Fault | Cost |
|---|---|
| Igniter or flame sensor | $250–$800 |
| Pressure switch | $200–$500 |
| Control board | $300–$900 |
| Gas valve | $300–$800 |
| Heat exchanger | $400–$2,500 |
| Heat pump refrigerant or reversing valve fault | $300–$1,500 |
| No power (breaker, transformer) | $150–$500 |
When to stop repairing
- The heat exchanger is corroded or leaking — usually the single most expensive repair on the unit.
- The heater is over twelve years old and needs a major part.
- The repair quote exceeds roughly half a replacement heater.
- It has needed repeated repairs in the last two seasons.
How to read a PoolSavr estimate
- Step 1
Instant estimate
Based on your project selections and general pricing assumptions. Useful for deciding whether a project is realistic.
- Step 2
Measured estimate
Uses your pool, spa, or deck dimensions to price the work against the areas actually being resurfaced, tiled, or replaced.
- Step 3
Contractor proposal
Prepared by a licensed professional after inspecting the site. This is the only number that becomes a contract.
PoolSavr is an estimating and matching platform. We do not perform pool work ourselves — licensed local professionals do. Contractors pay PoolSavr for qualified project leads, which is how the estimating tools stay free for homeowners. A PoolSavr estimate is a planning range, never a guaranteed quote — read thefull estimate disclaimer.
Frequently asked questions
- How much does pool heater repair cost?
- Most component repairs — igniter, sensor, control board, gas valve — run $200–$900 including the service call. A heat exchanger is more, at $400–$2,500, and often makes replacement the better option.
- Is heat exchanger repair worth it?
- Rarely on a heater over ten years old, since the cost approaches or exceeds half of a new unit. On a younger heater with good service history, it can still be worthwhile.
Ready to see what your project costs?
Start with the work you are considering. You will get a preliminary range before anyone asks for your phone number, and you decide whether to request a contractor review at the end.