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

How To Tell If Your Spa Heater, Sensor, Or Circuit Board Is The Problem

When a hot tub stops heating, it can be difficult to know which part is actually causing the problem. The heater may seem like the o...

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How To Extend The Life Of Your Spa Pump, Heater, And Control System

Your spa pump, heater, and control system are three of the most important parts of your hot tub. The pump moves water, the heater ke...

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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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View All Heater Articles

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.