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Heaters



Free Shipping2-Year Warranty

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.

Description
Our Price
All photos, click to enlarge

Smart Low-Flow Heater Assembly. Titanium Element. 5.5Kw. 240 volts. Sundance Spa model years 2000+
#1 Most Popular: Sundance Smart Titanium Low Flow 6kw Heater
Smart Low-Flow Heater Assembly. Titanium Element. 5.5Kw. 240 volts. Sundance Spa model years 2000+
$173.67
$173.67
More Info
Replacement for item 6500-310 Smart Low-Flow Heater Assembly. Titanium Element. 5.5Kw. 240 volts. Sundance Spa model years 2000+
#1 Most Popular: Sundance Smart Titanium Low Flow 6kw Heater
Replacement for item 6500-310 Smart Low-Flow Heater Assembly. Titanium Element. 5.5Kw. 240 volts. Sundance Spa model years 2000+
$124.35
$124.35
More Info
Heater. Watkins PDR No-Fault 6000 Series. 6kw. Titanium element
#2 Most Popular: Watkins No-Fault 6000 Titanium Low Flow 6kw Heater
Heater. Watkins PDR No-Fault 6000 Series. 6kw. Titanium element
115 volt or 230 volt applications. Sensors used with this heater: High
$255.2
Heater Assembly - Balboa M7
#3 Most Popular: Balboa M7 5.5kw
Heater Assembly - Balboa M7
$121.59
$121.59
More Info
Heater Assembly, Balboa M7, 4.0kw, 15in x 2in w/ sensors, split nuts, gaskets, and 2inMBT x 2in S fittings
#4 Most Popular: Balboa M7 4.0kw
Heater Assembly, Balboa M7, 4.0kw, 15in x 2in w/ sensors, split nuts, gaskets, and 2inMBT x 2in S fittings
$121.32
$121.32
More Info
Heater Assembly, Balboa, 4.0kw, 15 inch  x 2 inch, w/ pressure switch, sensor, split nuts, gaskets, and 2in MBT x 2in S fittings
#5 Most Popular: Balboa Value/LE 4.0kw
Heater Assembly, Balboa, 4.0kw, 15 inch x 2 inch, w/ pressure switch, sensor, split nuts, gaskets, and 2in MBT x 2in S fittings
$111.44
$111.44
More Info
Heater Assembly. Balboa. 5.5kw. 15 inches long x 2 inch ID. with Pressure Switch and Split Nuts
#6 Most Popular: Balboa 5.5kw w/ Pressure Switch
$102.93
$102.93
More Info
Low Flow Heater Assembly
#7 Most Popular: Laing Low Flow 5.5kw
Low Flow Heater Assembly
$111.51
$111.51
More Info
Low Flow Heater Assembly
#8 Most Popular: Laing Low Flow 4.0kw
Low Flow Heater Assembly
$131.07
$131.07
More Info
Heater Assembly
#9 Most Popular: Universal 4.0kw
Heater Assembly
$55.46
$55.46
More Info
Heater Assembly
#10 Most Popular: Standard 5.5kw
Heater Assembly
$52.29
$52.29
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-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 $7.95 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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