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Spa Heater Problems

If your spa heater has stopped working, the most likely cause is a problem with either your spa heater element or your spa controller (the heater is usually built into the spa controller)

If your original heater housing needs replacement, check out our SpaGuts Universal Heater Assembly.

Checking Your Spa Heater Element

First, open up the heater and take a look at the heater element. If it has a broken or burnt-looking spot on it or in any other way doesn't look pretty similar to a new one, you probably just need a new heater element. Damaged heater elements are the most common spa problem. The damage comes from improper water chemistry. Fortunately, this is a relatively simple repair, and our universal spa heater element fits most spa heaters.

Checking Your Spa Controller

Unfortunately, if your heater element looks okay, you have to be an electrician to diagnose the problem, which is either going to be in the heater unit or in the heater controls. We can't diagnose it for you, but we can tell you that it will probably cost you, depending on where you live, around $60 to have someone diagnose it, and around $150 to repair it - if it's repairable. For not much more you can buy and install a brand-new Spa Guts spa controller, but if your spa equipment is more than 8 years old, you should consider replacing the entire spa pack.

Spa controllers typically last about 10 years and comprise most of the cost of a spa pack. A whole new spa pack is typically only $595 to $800, so you need to get at least a couple years' more life out of your old spa pump and blower to make it worth fixing the old controller. If your spa pack is over 8 years old, that's a bad bet. We recommend buying a whole new spa pack so you can enjoy years of trouble-free spa use. More about new spa packs.

Spa Guts Spa Heaters

Like most spa heater manufacturers, Spa Guts spa heaters are built into the spa controller. That's because, other than the easily replacable spa heater element, there's not much that can go wrong with a spa heater that is not caused by a problem with the spa controller. With no more than a few adjustments of your hot tub pack's plumbing, our replacement spa controller/heaters will fit your spa.

We carry both pneumatic (air-control) and electronic (digital) spa controller/heaters.

Most older and budget spas came originally equipped with pneumatic spa controllers. If you're replacing the controller and having to get out of the tub and open up the equipment access panel to adjust the spa's temperature really bothers you, now is the time to switch to a more convenient electronic spa controller.

Although electronic spa controllers are more convenient, and they cost only slightly more than our pneumatic spa controllers, for most people the pneumatic spa controller is the better choice. Pneumatic spa controllers are simpler and less prone to problems. Electronic spa controllers are run by electronics. Moisture and temperature extremes are bad for electronics. And moisture and temperature extremes are what spas are all about. So, if you do choose the convenience of an electronic spa controllers, avoid extreme weather exposure.

Select a spa heater:

  Image Description Brand Price  
 

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Flo-Thru Heater Element, Universal

If your spa fails to heat the water properly, the heater element should always be checked. ... 
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SpaGuts $39.00 configure  
           
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Flo-Thru Heater Element, Triple Bend, Centered Bulkhead, Incoloy, 5.5KW

Replacement Flo-Thru Heater Element, Triple Bend, with Centered Bulkhead, Incoloy Metal. Outputs 5.5KW on 220V, and 1.5KW on 110V. ... 
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Therm Product $49.99
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Flo-Thru Heater Element, Triple Bend Centered Bulkhead, Incoloy, 4.0KW (SP)

Replacement Flo-Thru Heater Element, Triple Bend, with Centered Bulkhead, Incoloy Metal. Outputs 4.0KW on 220V, and 1.0KW on 110V. ... 
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Therm Product $60.00
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  Image Description Brand Price  
 

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SpaGuts OEM Flo-Thru Heater Assembly, 5.5KW

This is our SpaGuts OEM Flo-Thru Heater Assembly that fits only SpaGuts and Hydro-Quip brand spa controllers. The OEM heater assembly is only available with 5.5kw Incoloy heater element. ... 
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Spa Guts $75.00
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  Image Description Brand Price  
 

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SpaGuts Universal Flo-Thru Heater Assembly

SpaGuts Universal Flo-Thru Heater Assembly works with many spa controllers that has a High Flow Flo-Thru Heater attached just like the picture shown. ... 
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SpaGuts $72.95 configure  
           
  Image Description Brand Price  
 

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SpaGuts Detached 5.5KW Flo-Thru Heater Assembly Replacement with Cords, 2"

Replacement 5.5KW Flo-Thru Heater Assembly for SpaGuts brand Electronic Controllers with Slide/Remote Heater model. The heater is pre-assembled with a 5. ... 
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SpaGuts $169.95
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  Image Description Brand Price  
 

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Balboa VS M7 Heater ASSY Replacement with Sensors, 5.5KW, 58083

Replacement Heater Assembly for Balboa's VS M7 model controllers.

Heater Dimensions are 15" L x 2" Diameter. ... 
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Balboa $131.95
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  Image Description Brand Price  
 

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Balboa VS M7 Heater ASSY Replacement with Sensors, 4.0KW, 58104

Replacement Heater Assembly for Balboa's VS M7 model controllers.

Heater Dimensions are 15" L x 2" Diameter. ... 
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Balboa $131.95
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  Image Description Brand Price  
 

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Balboa Heater ASSY Replc w/Pressure Switch and Sensor, 4KW, R5746, 58048

Replacement Heater for Balboa Heater Assembly with Pressure Switch and Sensor, 4KW, 58048. ... 
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Balboa $115.95
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  Image Description Brand Price  
 

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Replacement Gecko SSPA/MSPA Flo-Thru Heater Assembly, 5.5KW, 220V

Replacement Gecko SSPA/MSPA Flo-Thru Heater Assembly, 5.5KW, 220V. Stainless Steel heater housing. Incoloy 800 Heater Element. Includes pair of 2.0 inch heater split nuts. ... 
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Therm Products $92.95
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  Image Description Brand Price  
 

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Replacement Gecko SSPA/MSPA Flo-Thru Heater Assembly, 4.0KW, 220V

Replacement Gecko SSPA/MSPA Flo-Thru Heater Assembly, 4.0KW, 220V. Stainless Steel heater housing. Incoloy 800 Heater Element. Includes pair of 2.0 inch heater split nuts. ... 
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Therm Products $92.95
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  Image Description Brand Price  
 

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Cal Spas® XL Heater ASSY Resplacement with box, 5.5KW

This is a replacement Flo-Thru Heater Assembly and box with an internal 5.5KW heater element for Cal Spas® XL Heater Assembly. ... 
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Therm Product $119.90
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  Image Description Brand Price  
 

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Cal Spas® XL Heater ASSY Resplacement, Centered Wrap, Wet Element, 5.5KW

This is a replacement Flo-Thru Heater Assembly and Centered Insulation Wrap with an internal 5.5KW heater element for Cal Spas® XL Centered Heat Exchanger. ... 
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Therm Products $119.95
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  Image Description Brand Price  
 

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Cal Spas® XL Heater Assy, 5.5KW 220V Centered, 2003, Dry, HEA14100430 (SP)

Cal Spas® XL Heater Assembly with 5.5KW 220V Centered Dry Heater for 2003 Model Cal Spas. Cal Spas part number HEA14100430. Thermcore or Therm Product part number F2550-2001. ... 
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Cal Spas $199.95
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  Image Description Brand Price  
 

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Leisure Bay Spa Heater Exchanger Replacement, 4KW

Replacement Flo-Thru Heater Assembly and box with an internal 4.0KW heater element for Leisure Bay Spas Heater Exchanger, model F2400-1001. ... 
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Therm Product $199.00
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  Image Description Brand Price  
 

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Heater Assembly, 1.0KW 110V, 8.5 x 1.5, C1100-0210-1

Replacement Flow-Thru Heater Assembly with 1.0KW 110V Incoloy Heater Element, OEM part number C1100-0210-1. Includes cover plate for sensors, heater split nuts, heater tailpieces, and o-rings. ... 
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Therm Product $85.00
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  Image Description Brand Price  
 

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Canister Low-Flo Heater ASSY for Gatsby,Blue Ridge,Leisure Bay, 5.5KW

Replacement Canister Low-Flo Heater Assembly and box with an internal 5.5KW low density heater element for Gatsby, Blue Ridge, Leisure Bay, model 26-08175 and E2550-0301ET. ... 
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Therm Product $195.99
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  Image Description Brand Price  
 

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Double-Barrel Low-Flo Heater Assembly

SpaGuts Double-Barrel Low-Flo Heater Assembly is the replacement for Watkins No-Fault® low flow dual metal tube heater assembly. ... 
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Therm Product $199.95 configure  
           
  Image Description Brand Price  
 

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Low-Flow Tubular Heater Assembly, Square-back Style, 5.5KW

Replacement Low-Flow Tubular Style Heater Assembly with 3/4 inch barb fittings. This is a square-back style heater that replaces similar style Laing Low-Flow Tubular heaters. ... 
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SpaGuts $189.95
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  Image Description Brand Price  
 

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Low-Flow Tubular Heater Assembly, Trombone Style, 4.0KW

Replacement Low-Flow Tubular Style Heater Assembly with 3/4 inch barb fittings. This is a trombone style heater that replaces similar style Laing Low-Flow Tubular heaters. ... 
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Therm Product $189.95
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  Image Description Brand Price  
 

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Universal Inline Bath Heater, 110V

Bath Heaters for jetted bath tubs assures the water temperature will remain in your personal Comfort Zone for as long as you desire. ... 
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SpaGuts $109.95 configure  
           
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Universal T-Style Bath Heater, 110V

This is a T-Style bathtub heater designed to be installed on the pressure side of the bathtub pump. ... 
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SpaGuts $121.95
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Heater Split Nuts with screws (Pair)

Split nuts for use on heater housings. Sold as a pair, with screws.

Inside diameter of the 2 inch heater split nut is approximately 3 inch.
Inside diameter of the 1. ... 
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Waterway $14.95 configure  
           
  Image Description Brand Price  
 

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Heater Tailpieces with O-ring gaskets (Pair)

Screw on heater unions that attach to Heater Manifold for connection to plumbing. Comes with fitted rubber o-ring gaskets to prevent leakage.

Available for both 1.5 and 2. ... 
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SpaGuts $19.95 configure  
           
  Image Description Brand Price  
 

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Heater Uni-Nut Kit with 3/4" Barbed Tailpiece, 3"

Replacement Heater Uni-Nut Kit with 3/4" Barbed Tailpiece. Typically used for 3" Low-Flo Heaters. ... 
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Therm Product $29.95
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  Image Description Brand Price  
 

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Heater O-Ring Gaskets (12 pieces), 2.0"

Replacement 2.0 inch heater o-ring gaskets. This order is for a quantity of 12 pieces.

This item comes with a 90-day limited warranty.

 ... 
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SpaGuts $36.00
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  Image Description Brand Price  
 

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Heater Assy, Saratoga Low-Flo Vertical SS 4.0KW 220V 3/4" E2400-0420ET (SP)

Replacement 4.0KW 220V Heater Assembly for Saratoga Spas. This is a Low-Flo Heater Assembly, meant for mounting vertically onto the side of a spa controller. The heater terminals are about 6. ... 
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Therm Product $198.99
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  Image Description Brand Price  
 

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Canister Low-Flo Heater ASSY for Gatsby, Blue Ridge,Leisure Bay, 4.0KW

Replacement Canister Low-Flo Heater Assembly and box with an internal 4.0KW low density heater element for Gatsby, Blue Ridge, Leisure Bay, model 26-08174 and E2400-0301ET. ... 
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Therm Product $195.99
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  Image Description Brand Price  
 

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Canister Low-Flo Heater ASSY, Gatsby,Hurricane,Leisure, E2550-0202ET (SP)

Replacement Canister Low-Flo Heater Assembly with an internal Teflon Coated 5.5KW low density heater element for Gatsby, Hurricane and Leisure Bay Spas. ... 
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Therm Product $199.99
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  Image Description Brand Price  
 

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SpaGuts OEM Flo-Thru Heater Assembly, Titanium, 5.5KW (SP)

This is our SpaGuts OEM Flo-Thru Heater Assembly that fits only SpaGuts brand spa controllers. The heater metal housing and heater element are made out of Titanium. ... 
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SpaGuts $179.95
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  Image Description Brand Price  
 

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Flo-Thru Heater Element for Export Application, 2.0KW, 220V

Replacement 2.0KW 220V Incoloy Flo-thru Heater Element for Export Controllers. ... 
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Therm Product $49.00
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  Image Description Brand Price  
 

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Flo-Thru Heater Element for Export Application, 3.0KW, 220V

Replacement 3.0KW 220V Incoloy Flo-thru Heater Element for Export Controllers. ... 
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Therm Product $49.00
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  Image Description Brand Price  
 

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SpaGuts Universal Flo-Thru Heater Assembly, Titanium, 5.5KW (SP)

SpaGuts 5.5KW 220V Titanium Universal Flo-Thru Heater Assembly. The heater metal housing and heater element are made out of Titanium. Great for Salt Water Application. ... 
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SpaGuts $179.95
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