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Spa & Hot Tub Heater Assemblies and Manifolds

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Cal Spa UV Lamp Bulb 15W LIT16000381 – Vita Pool Supply
Cal Spa XL 5.5kW Flo - Thru Heater Assembly 26 - 0011 - 7S - K – Vita Pool Supply

Cal Spa XL 5.5kW Flo-Thru Heater Assembly 26-0011-7S-K

Cal Spas
$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
In stock

Cal Spa XL 5.5kW Flo-Thru Heater Assembly 26-0011-7S-K Heater Assembly, Flo-Thru, Cal Spa XL Series, 5.5Kw, 15" Long, Incoloy Brand: Cal Spas Heat...

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$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
Cal Spa UV Lamp Bulb 15W LIT16000381 – Vita Pool Supply
Cal Spa XL 5.5kW Flo - Thru Heater Assembly 26 - 0011 - F - RS - K – Vita Pool Supply

Cal Spa XL 5.5kW Flo-Thru Heater Assembly 26-0011-F-RS-K

Cal Spas
$169.99 - $169.99
$169.99
$169.99 - $169.99
$169.99
In stock

Cal Spa XL 5.5kW Flo-Thru Heater Assembly 26-0011-F-RS-K Heater Assembly, Flo-Thru, Cal Spa XL Series, 5.5Kw, 15" Long, Titanium Brand: Cal Spas H...

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$169.99 - $169.99
$169.99
$169.99 - $169.99
$169.99
Cal Spa 5.5kW Flo - Thru Heater Assembly 26 - H0021 - 7S - K – Vita Pool Supply
Cal Spa 5.5kW Flo - Thru Heater Assembly 26 - H0021 - 7S - K – Vita Pool Supply

Cal Spa 5.5kW Flo-Thru Heater Assembly 26-H0021-7S-K

Cal Spas
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
In stock

Cal Spa 5.5kW Flo-Thru Heater Assembly 26-H0021-7S-K Heater Assembly, Replacement, 2.25" x 15.75", 5.5kW, Cal Spa Brand: Cal Spas Heater Length: 1...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
Cal Spa 4.0kW Flo - Thru Heater Assembly 26 - 0165 - 5S - K – Vita Pool Supply
Cal Spa 4.0kW Flo - Thru Heater Assembly 26 - 0165 - 5S - K – Vita Pool Supply

Cal Spa 4.0kW Flo-Thru Heater Assembly 26-0165-5S-K

Cal Spas
$179.99 - $179.99
$179.99
$179.99 - $179.99
$179.99
In stock

Cal Spa Replacement 4.0kW Flo-Thru Heater Assembly 26-0165-5S-K Heater Assembly, Replacement, 2.25"x16.25", 4.0kW, Cal Spa Brand: Cal Spas Heater...

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$179.99 - $179.99
$179.99
$179.99 - $179.99
$179.99
Cal Spa UV Lamp Bulb 15W LIT16000381 – Vita Pool Supply
Cal Spa XL 2.5kW Flo-Thru Heater Assembly 26-0011-3S-K

Cal Spa XL 2.5kW Flo-Thru Heater Assembly 26-0011-3S-K

Cal Spas
$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
In stock

Cal Spa XL 2.5kW Flo-Thru Heater Assembly 26-0011-3S-K Heater Assembly, Flo-Thru, Cal Spa XL Series, 2.5Kw, 15" Long, Incoloy Brand: Cal Spas Heat...

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$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
Cal Spa UV Lamp Bulb 15W LIT16000381 – Vita Pool Supply
Cal Spa 5.5kW Flo - Thru Heater Assembly 26 - 2001 - 7S - K – Vita Pool Supply

Cal Spa 5.5kW Flo-Thru Heater Assembly 26-2001-7S-K

Cal Spas
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
In stock

Cal Spa 5.5kW Flo-Thru Heater Assembly 26-2001-7S-K Heater Assembly, Replacement, 2.25"x15", 5.5kW, Cal Spa w/Insulation Wrap Brand: Cal Spas Hea...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
Cal Spa UV Lamp Bulb 15W LIT16000381 – Vita Pool Supply
Cal Spa 2.5kW Flo - Thru Heater Assembly 26 - 2001 - 3S - K – Vita Pool Supply

Cal Spa 2.5kW Flo-Thru Heater Assembly 26-2001-3S-K

Cal Spas
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
In stock

Cal Spa 2.5kW Flo-Thru Heater Assembly 26-2001-3S-K Heater Assembly, Replacement, 2.5Kw, 2.25" x 15" w/Insulation Wrap Brand: Cal Spas Heater Leng...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
Cal Spa UV Lamp Bulb 15W LIT16000381 – Vita Pool Supply
Cal Spa XL 4.0kW Flo - Thru Heater Assembly 26 - 0011 - 5S - K – Vita Pool Supply

Cal Spa XL 4.0kW Flo-Thru Heater Assembly 26-0011-5S-K

Cal Spas
$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
In stock

Cal Spa XL 4.0kW Flo-Thru Heater Assembly 26-0011-5S-K Heater Assembly, Flo-Thru, Cal Spa XL Series, 4.0Kw, 15" Long, Incoloy Brand: Cal Spas Heat...

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$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
Cal Spa Replacement 5.5kW Flo - Thru Heater Assembly 26 - 0165 - 7S - K – Vita Pool Supply
Cal Spa Replacement 5.5kW Flo - Thru Heater Assembly 26 - 0165 - 7S - K – Vita Pool Supply

Cal Spa 5.5kW Flo-Thru Heater Assembly 26-0165-7S-K

Cal Spas
$179.99 - $179.99
$179.99
$179.99 - $179.99
$179.99
In stock

Cal Spa Replacement 5.5kW Flo-Thru Heater Assembly 26-0165-7S-K Sundance Spas has added “Heater ON” and “High Limit Tripped” lights to improve the ...

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$179.99 - $179.99
$179.99
$179.99 - $179.99
$179.99

Keep your spa warm and inviting all year long with our hot tub heater assembly collection. A reliable spa heater makes it easy to enjoy the perfect water temperature every time, so you can relax without worry. These heater assemblies are built for durability and simple installation, helping your spa run smoothly season after season.

Whether you’re upgrading an old unit or replacing a part, our hot tub heater assemblies give you peace of mind and total control over your spa’s warmth. Plus, pairing your heater with the right spa controller can make managing your hot tub even easier.

Browse our selection and find the perfect spa heater to keep your hot tub cozy and inviting. With the right setup, all that’s left is to sink in, unwind and let your spa do the work.