CSPA Electric Spa Heater 5.5 kW - CSPAXI55


Model # CSPAXI55

By Hayward Pool Products

  5 Average  



Model # CSPAXI55

Warranty 1 Year

Dimensions 11-5/8" x 7"

Alternate Part #'s CSPA-55, CSPAXI55, HAY-15-641, HAYCSPAXI55

Product Description

Hayward electric spa heaters contain all of the sophisticated features and capabilities of heaters twice their size. The electric heaters fit into compact spaces - even under spa skirts or steps. Like all Hayward heaters, they are easy to install and service.


  • Spas/hot tubs


  • 304 stainless steel tank
  • Service-ease design gives simple access to internal controls
  • Heater on indicator light 
  • UPS Shippable

Product Specifications

5.5 kW
240 V
1 1/2 in.

?     Asked on 6/2/2019by Yana

I have 5000 gallons pool. Do you think it will be enough to heat it up

A  Answered on 6/8/2019 by InyoPools Product Specialist Michelle B.

Hello, We would recommend this one. http://www.inyopools.com/Products/02200013000490.htmThis is for a spa only.

?     Asked on 2/14/2019by Deacon Toles

Can this unit be used in a baptismal pool ?

A  Answered on 2/15/2019 by InyoPools Product Specialist Michelle B.

Hello, Yes, you would be able to if the plumbing allows it.

?     Asked on 5/28/2018by Btu

how many BTUs is this heater? Thank you

A  Answered on 5/29/2018 by InyoPools Product Specialist Alex V.

Hello, The heater is not rated in terms of btu's. It is listed at 5.5 kW heater. 

?     Asked on 9/13/2017by Jeff Boyd

The literature indicates it is for up to 400 gallon spas. I'm hoping to use it on a 1,500 gallon (therapy pool) that sits in a heated shed. Am I just asking for trouble going with something that seems to be undersized? My thinking is that if the room is heated to 65 degrees I shouldn't have a terrible time heating it to 90 degrees as the 400 gallon is probably for heating a spa sitting outside in 20 degree weather to 100 degrees.

A  Answered on 9/14/2017 by InyoPools Product Specialist Lennox H.

Hi, Jeff Boyd. Undersizing a heater or any equipment will cause the unit to be over worked causing it to fail. I would recommend the Electric Spa Heater 11 kW - CSPAXI11 model.

?     Asked on 5/24/2017by WL

Can this pump be used on a soft sided Coleman pool with steel frame...9'x18'?

A  Answered on 5/26/2017 by InyoPools Product Specialist Lennox H.

Hi, WL. This unit is an electric heater, not a pump. With the correct pvc connections and size pump, it will be able to heat a 9'x18' pool depending on the desired pool temperature.

?     Asked on 1/26/2017by Inyo Visitor

Will the CSPAXI55 work on 208v 3 phase power

A  Answered on 1/26/2017 by InyoPools Product Specialist Scott W.

No, that heater works on 240V.

?     Asked on 6/29/2015by Jeff Horvath

How long does it take to heat (indoors) 800 gallons from 74 F to 84 F

A  Answered on 6/30/2015 by InyoPools Product Specialist Lennox H.

Hi Jeff, Based off of the infomation I've gathered from the Hayward CSPA Series Heater literature, it would take about 3.5 hours for the Electric Spa Heater 5.5 KW to raise a 800 gallon spa 10 degrees.

?     Asked on 6/4/2015by Inyo Visitor

What is the weight of this heater.

A  Answered on 6/4/2015 by InyoPools Product Specialist Joe S.

This unit weighs 25 pounds

?     Asked on 4/24/2015by Inyo Visitor

Can this heater be used for a above ground pool?

A  Answered on 4/24/2015 by InyoPools Product Specialist Robert M.

This could be used on a very small (12') above ground pool.

?     Asked on 2/3/2012by Guest

Can this heater be used outdoors?

A  Answered on 2/3/2012 by InyoPools Product Specialist Patrick P.

According to Hayward, this spa heater is rated for both indoor and outdoor use.

?     Asked on 5/10/2009by Guest

What is the size and inlet sizes of these units?

A  Answered on 5/10/2009 by InyoPools Product Specialist Patrick P.

The inlet size on this heater is designed for 1.5" pipe. The heater measures 11 5/8" Tall X 6 1/4" Wide X 6 5/8" Deep.

?     Asked on 8/16/2006by Guest

How many amps does this heater needs on the electrical requirements.

A  Answered on 8/16/2006 by InyoPools Product Specialist Patrick P.

 It requires 50 amp electrical service