Heaters
Complete Heater Units
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.
Smart Low-Flow Heater Assembly. Titanium Element. 5.5Kw. 240 volts. Sundance Spa model years 2000+
High Limit Disc used with this heater: 2
Replacement for item 6500-310 Smart Low-Flow Heater Assembly. Titanium Element. 5.5Kw. 240 volts. Sundance Spa model years 2000+
High Limit Disc used with this heater: 2
Heater. Watkins PDR No-Fault 6000 Series. 6kw. Titanium element
115 volt or 230 volt applications. Sensors used with this heater: High
Heater Assembly, Balboa M7, 5.5kw, 15 inch x 2 inch, w/ sensors, split nuts, gaskets, and 2 inch Male B Thread x 2 inch Socket tailpieces
Balboa heater for VS series controls w/sensors, Balboa 58083
Heater Assembly, Balboa M7, 4.0kw, 15in x 2in w/ sensors, split nuts, gaskets, and 2inMBT x 2in S fittings
Balboa heater for VS series controls w/sensors, Balboa 58104
Heater Assembly, Balboa, 4.0kw, 15 inch x 2 inch, w/ pressure switch, sensor, split nuts, gaskets, and 2in MBT x 2in S fittings
Used on VALUE & LE SYSTEMS.
5.5 KW Heater w/pressure switch tap 15 inch, Balboa 50096, with high limit sensor compartment (not showing)
Low Flow Heater Assembly
Laing: 240V, 5.5KW, Low Flow Heater
Low Flow Heater Assembly
Laing 240V 5.5KW/4.0KW Low Flow Heater, 6500-063
Heater Assembly
Brett EM100, EM190, and pre-97 HydroQuip, 5.5kw, 15"
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.

|
SKU |
A |
B |
C |
D |
E |
F |
G |
H |
I |
|
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-B24040E |
15 |
4 5/16 |
5 9/16 |
n/a |
n/a |
n/a |
12 5/16 |
6 |
3 1/4 |
|
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-B24040T |
15 |
4 5/16 |
5 9/16 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
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-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-B24040W |
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-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-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-B24055B |
15 |
4 5/16 |
5 9/16 |
1 15/16 |
9 1/8 |
n/a |
3 |
6 7/8 |
5 |
|
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-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-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-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-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-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-B24055M |
15 |
4 5/16 |
5 9/16 |
2 9/16 |
9 3/4 |
n/a |
n/a |
2 11/16 |
6 |
|
1-HA-B24055MA |
15 |
4 5/16 |
5 9/16 |
1 7/8 |
11 7/8 |
n/a |
2 7/8 |
5 7/8 |
3 1/4 |
|
1-HA-B24055P |
15 |
5 1/5 |
5 3/4 |
2 |
12 |
n/a |
3 |
6 7/8 |
5 |
|
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-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-B24055S |
15 |
4 5/16 |
5 9/16 |
n/a |
n/a |
n/a |
n/a |
5 1/4 |
4 1/2 |
|
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-B24055T |
15 |
4 5/16 |
5 9/16 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
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-B24055W |
15 |
4 5/16 |
5 9/16 |
n/a |
n/a |
n/a |
8 1/8 |
n/a |
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-E24055LS |
23.25 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
1-HA-E24060LHS |
26 1/2 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
6500-310 |
|
|
|
|
|
|
|
|
|
|
73790 |
19 3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
B50067 |
|
|
|
|
|
|
|
|
|
|
B58016 |
15 |
4 1/4 |
5 1/2 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
B58019 |
15 |
6 1/2 |
7 3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
B58083 |
15 |
6 1/2 |
7 3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
B58104 |
15 |
6 1/2 |
7 3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
B58048 |
15 |
6 1/2 |
7 3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
1-HA-B24055FF |
|
|
|
|
|
|
|
|
|
|
B50096 |
15 |
6 1/2 |
7 3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
E2400-0300ET |
29
3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
E2550-0300ET |
30
3/4 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
|
6500-301 |
|
|
|
|
|
|
|
|
|
|
6500-310-J |
|
|
|
|
|
|
|
|
About Free Shipping: We do not charge for standard 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. A $225.00 surcharge applies to spa covers shipped to Alaska or Hawaii. Shipping costs to Alaska, Hawaii and Canada are determined by weight. Please click here to see our complete shipping policy.
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