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Hot Tub & Spa Heaters
We stock on the shelf a wide range of replacement heaters for hot tubs and spas. There are two main types of heaters fitted to hot tubs, Flow Thru or Low Flow. Flow Thru heaters generally require a large water flow to function correctly and have straight assembly tubes with either 1.5" or 2" plumbing union connections. Low flow heaters work in a very different way, they most commonly will have long 1" diameter heater tubes and water will be circulated through them by a small quiet 24 hour circulation pump.
Balboa flow through heaters are the most common found in Europe and 90% of low flow heaters where manufactured by Laing. Therm Products now produce a large range of replacement heaters for many older heater brands, including Laing's models.