---
title: Radon Fan Replacement Cost
canonical: "https://radonmitigationyorkpa.net/radon-guide/radon-fan-replacement-cost/"
pubDate: "2026-10-01T00:00:00.000Z"
updatedDate: "2026-10-03T00:18:00.000Z"
author: Radon Mitigation York PA
description: "How much radon fan replacement costs, what drives the price, signs your fan is failing, and when a repair makes more sense than a new fan."
---

# Radon Fan Replacement Cost

Radon fan replacement cost usually falls between about $200 and $600, according to national cost guides such as Angi, which lists an average near $350. Our fan replacement price in York is $300 to $550. For full systems, see our [York radon mitigation prices](/radon-mitigation-cost/). The final number depends on the fan size, how easy it is to reach, and whether anything else needs repair.

## How much does fan replacement cost?

The fan is the only moving part in most radon systems, so it is the part that wears out. A replacement job includes the new fan, labor to remove the old one, new rubber couplings if needed, and a check that the system is pulling suction again.

Angi breaks the cost down by fan size:

| Fan size (airflow) | Published cost range (Angi) | Our price |
|---|---|---|
| Low airflow (50 to 100 CFM) | $200 to $350 | $935 to $1,320 |
| Standard (100 to 200 CFM) | $300 to $500 | $935 to $1,320 |
| High airflow (200 to 300 CFM) | $400 to $600 | $935 to $1,320 |
| Multi-fan systems | $600 to $1,200 | $935 to $1,320 |

These are third-party averages. A written quote after we look at the system sets the real price.

## What changes the price

Several things push a fan swap up or down:

- **Fan model.** A matching replacement is simplest. If the old model is discontinued, the new fan may need different couplings or a slightly different mount.
- **Location.** Fans mounted on the outside wall at ground level are quick to reach. Attic fans or fans high on a two-story wall take more time and sometimes a tall ladder.
- **Fan size.** Homes with tight soil or several suction points use stronger fans, and those cost more.
- **Electrical.** A worn plug, switch or weatherproof box may need replacing too.
- **Code issues.** If the original install did not meet current Pennsylvania and ANSI/AARST practice, such as a discharge point that is too low, it may make sense to fix that during the visit.

## Signs your radon fan is failing

Most radon fans last about 5 to 10 years, according to both Angi and HomeGuide. Watch for these signs:

1. **The manometer reads zero.** If the liquid in the U-tube gauge is level, the fan is not pulling suction.
2. **New noise.** Grinding, rattling or humming often means worn bearings.
3. **The fan is silent.** Check the breaker and switch first. If it has power and still does not run, it has likely failed.
4. **A higher radon test.** A retest that climbs back toward or above 4.0 pCi/L can point to a weak fan.
5. **Water at the fan.** Condensation should drain back down the pipe. Water leaking from the fan housing can mean a cracked case or bad seal.

## Repair or replace?

Most radon fans are sealed units, so they are replaced, not rebuilt. Repairs make sense when the fan is fine and something around it is not, such as a loose coupling, a cracked pipe, a tripped breaker or a failed switch. Those fixes usually cost less than a new fan.

If your system is in an older York home with a stone or block foundation, the fan may have been undersized from the start. In that case a stronger fan, or an extra suction point, can be the better fix. Our guide on [why older homes cost more to mitigate](/radon-guide/older-home-radon-mitigation-cost/) explains why those houses often need more airflow.

## After the new fan goes in

A fan swap is not finished until you know the system works again. We check the manometer reading and look for leaks at the couplings. A follow-up radon test is a good idea, since EPA guidance is to test after any mitigation work, and the [EPA radon page](https://www.epa.gov/radon) has general guidance on retesting.

You can find out more about the service itself on our page about [radon fan replacement in York](/services/radon-fan-replacement-repair/), including what we check on every visit.

## How to make your next fan last longer

- Keep the discharge clear of leaves, nests and ice.
- Do not cover or box in an outdoor fan.
- Check the manometer once a month. It takes five seconds.
- Retest every couple of years, and after big renovations.

## Key takeaways

- National guides such as Angi put fan replacement at about $200 to $600, with an average near $350.
- Our York price is $300 to $550, set by a written quote.
- Most fans last about 5 to 10 years.
- A zero manometer reading, new noise or a rising test result are the main warning signs.
- Retest after any fan replacement.

## Frequently Asked Questions

### Can I replace a radon fan myself?

Pennsylvania requires DEP certification for anyone who mitigates radon for someone else. A homeowner working on their own system is a different case, but a wrong fan or a poor seal can undo the system. A certified installer also checks the rest of the system.

### Is a noisy radon fan dangerous?

A noisy fan is not dangerous by itself, but it often means the fan is wearing out. Check the manometer and plan for a replacement before it fails.

### Do I need a new radon test after a fan replacement?

It is a good idea. A test confirms the new fan brings your level back below the EPA action level of 4.0 pCi/L.

## Next step Call [(717) 356-3035](tel:+17173563035) any time for a same-day callback and a free written quote on your fan.