Spapak Electric Spa Heater / 11 KW - 001640



Model # 001640

By Raypak

  4.34 Average  



Model # 001640

Product Description

When electricity is the energy choice Raypak is the quality choice -- dependable, trouble-free, performance-proven - with corrosion-free, 100% copper and bronze waterways. Two compact models - 5.5kw and 11kw - built to last by the company renowned for reliability.

SpaPak spa/hot tub electric heaters furnish sustained heat to provide the maximum benefits of hydrotherapy...including stress reduction, relaxation and arthritis/pain relief.


  • Longer Life
    Because all waterways are corrosion-free copper and bronze - not aluminum. And, SpaPak features large size, heavy duty Incoloy heating elements that lasts far longer than ordinary water heating elements.
  • Troublefree
    Because SpaPak has extra quality and safety built-in - a pressure switch to prevent operation without water flow, a high limit temperature control to prevent overheating and a dependable quality thermostat.
  • Easy to Install
    With a compact design that fits into small spaces. Standard size, full flow 1-1/2" inlet and outlet connections are conveniently located. External current leak protectors are not required.
  • One Year Limited Warranty
    Against defects in materials and workmanship (see written warranty for details). In addition, every SpaPak is thoroughly tested before shipment.
  • Sizing Guide

The following table shows the heating capability for each model in temperature rise per hour with a given amount of water. For example, the 11kw unit will raise the temperature of 450 gallons of water 10 degrees Fahrenheit in one hour. To determine the gallonage of your spa, multiply the surface area x average depth x 7.5.

Product Specifications

11 kW
240 V
1 1/2 in.
Dimension A:
23-1/8 in.
Dimension B:
15 in.
Dimension C:
11 in.
31 lbs.

?     Asked on 8/18/2017 by Greg

Will this work with a salt water chlorine generator in my 8' x 30" vinyl sided round above ground pool?

A     Answered on 9/27/2017 by InyoPools Product Specialist Lennox H.

Hi, Greg. This heater will work with the proper installation and size filtration system. 

?     Asked on 5/28/2017 by JOHN


A     Answered on 5/29/2017 by InyoPools Product Specialist Alex V.

John, Both would last the same amount of time. The main this is to closely monitor the chemical levels so that the water is not corrosive to the heater. You can purchase an extra element to keep on hand as a back up.

?     Asked on 3/19/2017 by Nick Johnson

Is 15 gpm (900 gph) the required flow to keep the 11 KW heater on or is it higher for the 11 KW model?

A     Answered on 3/20/2017 by InyoPools Product Specialist Andy O.

Hello Nick- The Spapak Electric Spa Heater / 11 KW - 001640 will require a minimum flow rate of 15 gpm and a maximum flow rate of 60 gpm.

?     Asked on 12/26/2016 by Roberto Navarro Pons

How many gallons is the max to heat?

A     Answered on 12/27/2016 by InyoPools Product Specialist Andy O.

Hello Robert- This is a spa heater, so there isn't a set size for these heaters. I wouldn't use this on more than a 900 gallon spa.

?     Asked on 9/23/2016 by Jady

I have a spa heater ELS 1102-2 volts 240 amps 46. I am wondering how much electricity it will consume if you run it 24/7 in the winter time. This is our average temperature in the winter time: November (5 C/41 F, -2 C/28 F) ; December (0 C/32 F, -6 C/21 F), January (0 C/32 F, -7 C/19 F), February (3 C/37 F, -5 C/23 F) ; March (9 C/48 F, -2 C/28 F). Could you please tell me how to calculate the electricity consumption ? Thank you tons! Jady

A     Answered on 9/28/2016 by InyoPools Product Specialist Lennox H.

Hi Jady. To calculate how much it will cost to operate this unit you can use the following steps. 01) Amps x Volt = watts 02) Watts / 1000 = kW 03) kW x Hours = Usage 04) Usage x kW rate = Cost

?     Asked on 9/1/2016 by tim

when heating spa can you just put it on circulate or do you need the full pump on?

A     Answered on 9/16/2016 by InyoPools Product Specialist Stacey M.

Hello Tim, to heat your spa full unit/pump needs to be on.

?     Asked on 8/2/2016 by Steve

i work at a hotel. and my spa motor went out this weekend. replaced it today and now i have a flashing code. could you tell me what it means

A     Answered on 8/16/2016 by InyoPools Product Specialist Stacey M.

Hello Steve, you might just need a diagnostic run on it from Raypak 805-278-5300, was it the same model that you had previous or different?

?     Asked on 7/12/2016 by lARRY McAllister

I have an older Jaquzzi spa with electric water heater. Model # is Els-11002.Did they change the numbering subsequently to Els-1102? they are bot h 11KW, 240v All the information on the element is as follows. 6550561,,E83,,731xj0005,,240v,,,11000w. Are the new elements compatable with the older models?

A     Answered on 7/17/2016 by InyoPools Product Specialist Lennox H.

Hi Larry, The model numbers have changed but the parts are the same. The Raypak 11 Kw Element (001802F) is the element used with this unit.

?     Asked on 9/2/2015 by MIke

What are the electrical requirements for this product? Standard outlet or something more substantial? Also, would this be a sufficient product for an 8,000 gallon above ground pool? Currently my pool is too much in the shade and only gets to about 76 degrees from limited solar blanket exposure. Would like to increase at least 10 degrees. Any idea about cost to increase a pool this size 10-12 degrees as mentioned? Thanks.

A     Answered on 9/7/2015 by InyoPools Product Specialist Lennox H.

Hi Mike, You can find the electrical requirements Raypak SpaPak 552 & 1102 Tech Data Sheet. It has 1-1/2" NPT male connections.  The Spapak Electric Spa Heater / 11 KW would not be suitable for an 8,000 gallon pool. You will need multiple unit or go with the Hayward Heat Pro Heat Pump 50k BTU Digital Display Above Ground Pool.

?     Asked on 8/20/2015 by Robert

I have a 400 gallon built in spa located outside in Michigan. Which size heater would be appropriate?

A     Answered on 8/24/2015 by InyoPools Product Specialist Lennox H.

Hi Robert, For a 400 gallon spa the Spapak 5.5KW Electric Spa Heater would be the appropriate size but the Spapak 11KW Electric Spa Heater will heat the spa faster.

?     Asked on 5/19/2015 by

What is the amps for the 11kw unit?

A     Answered on 5/20/2015 by InyoPools Product Specialist Patrick P.

The Raypak 11 kw spa heater draws 46 amps.

?     Asked on 3/12/2015 by David

My hot tub is a side extension of my main (in ground concrete) pool. Can this unit be placed exposed to the elements alongside my pump/filter equipment?

A     Answered on 3/12/2015 by InyoPools Product Specialist Andy O.

Hello David, the spapak Electric Spa Heater part #001640 is rated for both indoor and outdoor installations.

?     Asked on 1/3/2013 by Guest

Is this a single phase or 3 phase heater?

A     Answered on 1/3/2013 by InyoPools Product Specialist Patrick P.

The 001640 Spapak Electric Spa Heater is single phase 240-volt.

?     Asked on 7/14/2012 by Guest

How high can I set the water temperature to with this heater?

A     Answered on 7/14/2012 by InyoPools Product Specialist Patrick P.

The Raypak 001640 spa heater has a high limit thermostat is factory set at 104°F.

?     Asked on 9/29/2006 by Guest

For the 5.5KW unit how much water flow is required through the heater(570gph)?

A     Answered on 9/29/2006 by InyoPools Product Specialist Patrick P.

The flow should be maintained above 15 GPM (900 GPH).  Failure to do so will cause the pressure switch to drop out, and the heater will become inoperative.


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