HEATER FINDER

Search by heater part number, Horizon number, Hydro-Quip number, manufacturer, spa/control system, model, or any known cross-reference. The Finder checks every reference field in one search.

Before ordering: Always confirm voltage, kilowatt rating, plumbing size, sensors, pressure switch configuration, plug style and overall heater compatibility. If your old heater is discontinued, the Finder will direct you to the final available replacement whenever one is listed.

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Heater Knowledge Base

What Is Balboa M7 Heater Technology?Learn how Balboa M7 dual-sensor heater technology works and why it matters when identifying a replacement. How Do I Find My Heater Number?See where to look for heater identification and which numbers are most useful when matching a replacement. How To Replace Your Spa Heater YourselfReview the basic replacement process and the compatibility details to confirm before installation.

Helpful Heater Articles

Why Your Hot Tub Is Not Heating: Common Causes And What To Check First

A hot tub that will not heat can be frustrating, especially when the water stays cold even though the spa appears to have power. In ...

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How To Choose The Right Replacement Spa Heater

Choosing the right replacement spa heater is important because the heater must match your hot tub’s control system, plumbing, voltag...

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Replacing A Hot Tub Temperature & High Limit Sensor

Not Sure Which Sensor You Need? Use our Temp Sensor Finder to search for a compatible temperature sensor, ...

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A Complete Guide To Spa Heater Replacement

A hot tub heater is one of the most important parts of your spa system. Without it, your hot tub quickly becomes little more than a ...

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What Does Balboa M7 Technology Mean In A Hot Tub Heater?

Balboa M7 technology is one of the most common heater and sensor designs found in modern hot tubs that use Balboa spa control system...

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Balboa Spa Heater Replacement: OEM Vs. Aftermarket Therm Heater Assemblies

When a spa heater fails, many hot tub owners assume they need the exact original Balboa heater assembly that came with the spa. That...

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Still need help finding your heater? Send us every part number visible on the heater, the spa/control-system information, voltage and kW rating, plus clear photos of the heater and its connections. You can also call 800-918-9143 during normal business hours. Get help finding a heater.