By Raypak



Model # 001640

Alternate Part #'s 46-197-1050, ELSR11022

Product Description

Spapak Electric Spa Heater / 11 KW - No Longer Available, See E3T Electric Digital 11kW Pool/Spa Heater - 017122 as alternate replacement option.



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
  • 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.



APPLICABLE WARRANTY PERIODS If the Heater is installed in a single family residential dwelling, the Applicable Warranty Period for the Heater and its parts is one (1) year If the Heater is installed anywhere other than a single family residential dwelling, the Applicable Warranty Period for the Heater and its parts is ninety (90) days.


LABOR AND SHIPPING COSTS This Limited Warranty does not cover any travel time or other labor costs for repairs or replacements arising from defects in the Heater or its parts. This Limited Warranty does not cover any shipping costs to and from Raypak’s designated service provider or from the installation site

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 6/22/2018by Hans W Jenau

How long does it take to heat an inground jacuzzi of 900 gallons by 25 degrees with the Spapak Electric Spa Heater? When the jacuzzi is not in use can the power be shut off at the heater?

A  Answered on 6/22/2018 by InyoPools Product Specialist Lennox H.

Hi, Hans. It will take this unit approximately, 5-1/2 hours to heat 900 gallons of water 25 degrees. 

?     Asked on 6/7/2018by Jonathan

I have a 15,000 gallon in-ground pool. What kind of heat pump would you recommend? Or could I run the Raypak 001640 Spa-Pak 11kw 240V for 24 hours to get the desired temp since its a smaller unit?

A  Answered on 6/13/2018 by InyoPools Product Specialist Lennox H.

Hi, Jonathan. We will need additional info in order to size a heat pump for your pool. I will need your city. the desired temperature, run time and the operation months. You can also use the Raypak Heater Sizer. This 11kW heater will not effectively heat your pool. 

?     Asked on 5/24/2018by Robert Mosher

how long will it take to heat an ice cold 16x48 above ground pool that holds 5000gallons of water

A  Answered on 5/26/2018 by InyoPools Product Specialist Lennox H.

Hi, Robert. It depends on what temperature it's heated too. This unit can increase your pool temperature by about .75 to 1 degree an hour. 

?     Asked on 4/2/2018by Andy

Is there an optimal flow rate for this heater? I know 60 is the max, would 60 get the spa up to temp the fastest or would a lower flow rate be more efficient? I have a variable speed pump and an inline flow meter. Therefore I can adjust the flow.

A  Answered on 4/4/2018 by InyoPools Product Specialist Lennox H.

Hi, Andy. This unit is designed to heat efficiently with a max flow rate of 60 GPM. The flow switch cannot be adjusted outside 15-60 GPM. 

?     Asked on 3/26/2018by Jared

I have an in-ground pool/spa. I plan to only heat my spa by isolating the spa when using the heater, only circulate water through the spa. My question is when I am not using the spa I plan to have the heater powered down, it would be to expensive to heat the pool. Is it okay to still have water circulating through the heater when it is off? Also is it okay to have no water circulating through it if i plan to have a valve to completely shutoff the heater when not using it. Thank you

A  Answered on 3/27/2018 by InyoPools Product Specialist Lennox H.

Hi, Jared. Yes, its okay to have no water or water circulating through the heater when it's not in use.

?     Asked on 3/8/2018by ELAINE MINKOFF

my pool is an above ground oval 4 ft high 12 feet wide and 18 ft long. will this heater keep it warm enough ? i currently have a hayward gas heater and i don't like it. i have had 3 in the last 10 years. i now only want a heater that is only electric.

A  Answered on 3/8/2018 by InyoPools Product Specialist Lennox H.

Hi, Elaine, This unit will not be adequate, I would recommend an Above Ground Pool Heat Pump.

?     Asked on 8/18/2017by 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 5/28/2017by 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 3/19/2017by 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 12/26/2016by 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 9/23/2016by 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 9/1/2016by 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 8/2/2016by 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 7/12/2016by 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 9/2/2015by 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 8/20/2015by 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 5/19/2015by Inyo Visitor

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 3/12/2015by 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 1/3/2013by 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 7/14/2012by 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 9/29/2006by 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.


Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Nut Drivers, Adjustable Wrench, PVC Fittings and glue

Hot Tub Leaked, Controller time clock failed, the Heater box rusted and the element faled

Written on 1/23/2018 by Guest

Most would tear it out, but for $2,300 with new lighting and a few bugs ironed out, the hot tub is at it's best in years.
Although the Spapak 11KW Spa heater went in easy, I thought the heater was faulty as it failed to heat past 86 degrees and AC indicator would not illuminate, and half the dual breaker would trip. A write up in the trouble shooting steps showed that the over pressure switch trip point comes set for a single speed pool pump during the vendor testing. The two speed hot tub pump would over pressurize and trip the relay. All it took is a 1/4 turn counter clockwise till the relay released (Clicked). Now it is working great and the tub will run up to 102 degrees, which has been great on these cold winter days....getting out into the cold breeze is the only hard part.

Were these instructions helpful? 


Review Summary

 (Average 3.86  out of 5 stars)
7 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

The Most Recent Reviews