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Heaters

Complete Heater Units





Free Shipping2-Year Warranty
Welome to HotTubWorks' spa heater assembly shop. Here, you'll find the largest selection of original equipment quality hot tub heaters at the best prices anywhere.
  • Stainless steel housing construction assures corrosion-free service
  • Incoloy element provides best corrosion resistance and value
  • Complete heater assembly carries HotTubWorks exclusive 2 year warranty
  • Factory built, tested and quality assured. No assembly problems.

as low as $69.95



You can match your heater three ways:

1. By Brand


If you know the original spa pack or control brand, you can start by looking up the spa heaters that match your brand and then eliminate from there.



2. By Popularity


Most spas use one of the six heater assembles shown here. These include two "universal" heater assemblies that can fit a variety of spas. You may be able to match your heater visually from one of these six, then click on the photo to check the details.

Description
 Price
  
All photos, click to enlarge
Heater Assembly #1 Most Popular
Heater Assembly
4.0kw, 240v, with pressure switch tap, 15"
Replacement for Balboa 4.0kw
 $114.99
 More Info
Heater Assembly #2 Most Popular
Heater Assembly
240V 5.5kW 15"
Replacement for Balboa M7
 $114.99
 More Info
Heater Assembly #3 Most Popular
Heater Assembly
Cal Spas XL Box 4.0kw 15" 240v
 $144.99
 More Info
Heater Assembly #4 Most Popular
Heater Assembly
Brett EM100, EM190, and pre-97 HydroQuip, 5.5kw, 15"
 $69.99
 More Info
Low Flow Heater Assembly #5 Most Popular
Low Flow Heater Assembly
Laing 240V 5.5KW/4.0KW Low Flow Heater
 $249.00
 More Info
Low Flow Heater Assembly #6 Most Popular
Low Flow Heater Assembly
Laing 240V 5.5KW/4.0KW Low Flow Heater
 $249.00
 More Info
Heater Assembly Universal
Heater Assembly
Assembly 5.5kW 240v moveable mounts
 $114.99
 More Info
Heater Assembly Universal
Heater Assembly
Assembly 4.0kW 240v moveable mounts
 $114.99
 More Info

3. By Vital Statistics


If you want an exact match of your heater assembly and you don't know your pack brand, you can use the diagram below to match the measurements of your heater. All measurements are from the left flange of the assembly to a terminal, a stud, a pressure switch or the thermal well (if present). Please note that these measurements can be +/- 1/16th of an inch.

Heater Diagram

measurements in inches
SKU
 A
 B
 C
 D
 E
 F
 G
 H
 I
1-HA-B24040W
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 8 1/8
 n/a
 n/a
1-HA-B24055PC
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 1 15/16
 n/a
 n/a
1-HA-B24055S
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 n/a
 5 1/4
 4 1/2
1-HA-B24055U
 15
 5 11/16
 6 15/16
 2 13/16
 3 1/4
 9 7/8
 6
 3 1/8
 n/a
1-HA-B24055XL
 15
 4 11/16
 5 9/16
 9 15/16
 12 1/16
 n/a
 13
 1 5/16
 3 1/8
1-HA-B24055P
 15
 5 1/5
 5 3/4
 2
 12
 n/a
 3
 6 7/8
 5
1-HA-B24055A
 15
 4 5/16
 5 9/16
 1 15/16
 7 11/16
 n/a
 2 7/8
 8 9/16
 n/a
1-HA-B24055AR
 15
 5 11/16
 6 15/16
 2 3/16
 12 3/16
 n/a
 4 1/4
 3 1/16
 n/a
1-HA-B24055K
 12
 3 3/16
 4 7/16
 2 1/8
 10 11/16
 n/a
 9 3/8
 5 5/8
 3 1/4
1-HA-B24055W
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 8 1/8
 n/a
 n/a
1-HA-B24040XL
 15
 4 11/16
 5 9/16
 9 15/16
 12 1/16
 n/a
 13
 10 5/16
 3 1/8
1-HA-B24040U
 15
 5 5/8
 6 7/8
 3 3/16
 8 3/16
 11
 9 13/16
 6
 3 1/8
1-HA-B24040S
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 n/a
 5 1/4
 4 1/2
1-HA-B24055M
 15
 4 5/16
 5 9/16
 2 9/16
 9 3/4
 n/a
 n/a
 2 11/16
 6
1-HA-B24040V
 13 1/4
 4 1/2
 5 3/4
 3 7/16
 9 13/16
 n/a
 3 3/16
 7
 6
1-HA-B24055D
 13 1/4
 4 9/16
 5 13/16
 1 3/4
 10 7/16
 n/a
 3 1/8
 6 11/16
 4 7/8
1-HA-B24055T
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
1-HA-B24055Q
 15
 4 5/16
 5 9/16
 1 7/8
 11 7/8
 n/a
 2 7/8
 2 11/16
 6
1-HA-B24055B
 15
 4 5/16
 5 9/16
 1 15/16
 9 1/8
 n/a
 3
 6 7/8
 5
1-HA-B24055C1
 15
 4 5/16
 5 9/16
 6 9/16
 11 3/4
 n/a
 2 11/16
 2 3/4
 6
1-HA-B24055SD
 15
 5 5/16
 6 9/16
 8 1/8
 n/a
 n/a
 9 3/4
 6
 3 1/8
1-HA-B24045G
 15 1/2
 4 5/16
 5 9/16
 1 15/16
 9 3/4
 11 7/8
 12 3/4
 2 3/4
 6
1-HA-B24055G
 15 1/2
 4 5/16
 5 9/16
 1 15/16
 9 3/4
 11 7/8
 12 3/4
 2 3/4
 6
1-HA-B24045R
 15
 5 1/4
 6 1/2
 1 15/16
 10 15/16
 n/a
 3 5/8
 4 9/16
 3 1/8
1-HA-B24055R
 15
 5 1/4
 6 1/2
 1 15/16
 10 15/16
 n/a
 3 5/8
 4 9/16
 3 1/8
1-HA-B24055C
 19
 4 5/8
 5 7/8
 6 15/16
 16 1/2
 n/a
 3 3/8
 2 1/2
 6
1-HA-B24055E
 15
 4 5/16
 5 5/16
 2 3/16
 12 1/4
 n/a
 3 1/8
 6 7/8
 5
1-HA-B24055N
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 12 15/16
 6
 3 1/4
1-HA-B24040N
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 12 15/16
 6
 3 1/4
1-HA-B12015N
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 12 15/16
 6
 3 1/4
1-HA-B24040T
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
1-HA-B24040E
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 12 5/16
 6
 3 1/4
1-HA-E24055LS
 23.25
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
1-HA-E24060LHS
 17
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
 n/a
1-HA-B24040PC
 15
 4 5/16
 5 9/16
 n/a
 n/a
 n/a
 1 15/16
 n/a
 n/a

About Free Shipping: With the exception of spa covers, we do not charge for shipping anywhere in the Continental US. As is customary in our business for orders under $100, we have a $4.99 handling charge to help us cover the cost of packing materials and labor in packing your order. Please click here to see our complete shipping policy.