Keep your pool system performing at its best with the Hayward Blower Vacuum Switch.

The Hayward IDXLBVS1930 Blower Vacuum Switch is a genuine OEM safety component designed for compatible Hayward pool and spa heaters. This specialized vacuum switch monitors negative pressure (vacuum) generated by the blower or inducer motor and confirms that adequate airflow is present before allowing the heater to ignite.

Proper vacuum detection helps ensure that combustion air is being drawn correctly through the heat exchanger and venting system. If airflow is insufficient due to blocked vents, blower failure, or plumbing restrictions, the switch prevents the heater from firing—protecting internal components and minimizing safety risks.

Have questions before you order? Our team is happy to help you pick the right part.