A/B Insert for HG3890 Push Button
The A/B insert is a precision-engineered replacement component designed to fit the HG3890 Herga push-button control system. It restores full functionality to your spa’s air switch, ensuring reliable operation between settings.
Key Features
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Direct OEM Fit
Precisely replaces original insert for HG3890 Herga air switch, guaranteeing seamless compatibility and long-term reliability -
Durable Construction
Crafted from robust, spa-grade plastic materials to withstand repetitive use and exposure to typical spa environments . -
Simple to Install
Easily snaps into the HG3890 push button mechanism—no tools required. Ideal for quick field repairs or maintenance work. -
Cost-Effective Maintenance
Allows repair of the push-button assembly without replacing the entire air switch unit—saves time and money. -
Widely Available
Sold by trusted spa-parts suppliers, it’s a reliable spare part for spa technicians and DIY enthusiasts
Technical Details
Specification | Description |
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Compatibility | HG3890 Herga Push Button air switch |
Component Type | A/B selector insert |
Material | Spa-grade plastic |
Installation | Push-fit into existing HG3890 assembly |
Pack Configuration | Single-unit component |
Why Use This Insert?
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Restores full A/B switch functionality without full unit replacement
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Extends service life of HG3890 push-button assemblies
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User-friendly installation—no specialist tools or expertise needed
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Smart spare part for maintenance kits or part inventories