Flow through heaters are tube style heaters with an internal heating element.
These tubes range in length from 8" - 19", the most common length of spa heater is 15".
Heater tubes are also listed by diameter; 1.5", 2" or 2.5" which refers to rough ID of the heater tube nothing else. Split nuts must follow these guidelines.
As most spa builders do not make their own heaters, they are manufactured by Thermproducts which was formally known as (RMF Related Metal, Aquatemp, Thermocore). This makes replacements easy to find & readily available. If you do not succeed in matching a part number for your heater just let us know & we'd be happy to help.
Regularly stocked heaters will have a 'Click Here' that takes you to that heater on www.spapartsshop.com Heaters which aren't too common will have [Special Order Heater] that just means we'll need to order one in for you. Special orders usually take 7-10 days. Contact us for ordering details.
Some heaters have the elements welded in, these heaters cannot have the element replaced on its own. But if you want to save your self some money Spa Parts Shop also carries an extensive selection of replacement heater elements.
Unless otherwise listed Pressure Switches, Thermostats & Hi limits are not included with the heater tubes. It would be wise to replace the pressure switch when replacing the heater.
| C2550-F002 [Special Order Heater] 5.5kw 240v 2″ x 19″ Flow Thru Heater Replaces F2550-0002 | |
| C2400-1008ET [Special Order Heater] VITA 4.0kw 240V 2″x17.5″ Flow Thru Heater | |
| C2400-0119 [Special Order Heater] SUNDANCE/MARQUIS 4.0kw 240V 2″x15″ L Shape Heater | |
| C2400-0736 [Special Order Heater] LA – ADVANCED 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: 48-3400-10-736H | |
| C2400-0309 [Special Order Heater] HYDRO QUIP 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: 20-00278-C | |
| C2550-2300 Click Here to View CORRECT TECH 5.5kw 240V 2″x12.5″ Flow Thru Heater Replaces: C2550-2300ET | |
| C2400-0503-TPS Click Here to View 4kw 240v 2″ x 15″ Dual sensor heater for Free Flow systems Replaces: 58001 | |
| C2400-0807-F [Special Order Heater] 4kw 240v 2″ x 15″ Dual sensor heater for Free Flow systems Replaces: 58085 | |
| C2550-0304A Click Here to View BRETT EM100 & EM190 / ACURA / ACC / ACTION / SPLASH / PDC / HYDRO QUIP 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-0304TI, (-1 or PD or ET-PD), C2550-0314 (ET or EP), 20-00430, 20-00417, 20-00307, B24055E, B24055E, 48-3300-10-304H | |
| C2400-0304 [Special Order Heater] BRETT EM100 & EM190 / ACURA / ACC / ACTION / SPLASH / PDC / HYDRO QUIP 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: C2400-0304TI, (-1 or PD or ET-PD), C2400-0314 (ET or EP), 20-00433, 20-00434 (4.5kw), 20-00454, 20-00317, B24040E | |
| C2550-1056 Click Here To View ACURA 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-1056TI, B24055A | |
| C2550-1054 [Special Order Heater] ACURA / ACC 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-1054TI, C2550-1054TI-1 | |
| C2400-1054 [Special Order Heater] ACURA / ACC 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: C2400-1054TI, C2400-1054TI-1 | |
| C2550-1004 Click Here To View ACC 5.5kw 240V 2″x12″ Flow Thru Heater Replaces: C2550-1004TI, C2550-1004TI-1 | |
| C2400-1004 [Special Order Heater] ACC 4.0kw 240V 2″x12″ Flow Thru Heater Replaces: C2400-1004TI(-1), C2450-1004, B24040KX | |
| C1100-0210-1 [Special Order Heater] BALBOA 1.0kw 120V 1.5″x8.5″ Flow Thru Heater Used on Sundance | |
| C2100-0210-1 [Special Order Heater] BALBOA 1.0kw 240V 1.5″x8.5″ Flow Thru Heater Used on Sundance | |
| C2550-0535 [Special Order Heater] BALBOA 1st GEN 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 48-3300-10-535H / C2550-0735 / C2550-0537 / C2550-07352 / 48-3300-10-435H / C2550-0435 | |
| C2400-0535 Click Here to View BALBOA 1st GEN 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: C2400-C2839-2, C2400-0537, C2400-0735, C2400-07352, C2400-0435, 50081, 50067, B240040LB (Light Leader) | |
| C2550-0809 Click Here to View BALBOA LE 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 58027 | |
| C2400-0809 [Special Order Heater] BALBOA LE 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: 58029 | |
| C2550-0807 Click Here to View BALBOA DUAL SENSOR TAPS 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 58002, 58016 | |
| C2400-0807 Click Here for Details BALBOA DUAL SENSOR TAPS 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: 58103, 58032 | |
| C2550-0033 [Special Order Heater] BRETT / CALDERA 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 48-3300-10-033HB | |
| E21100-3100 Click Here To View BRETT – PINNACLE HURICANE 11kw 240V 3″x15″ Flow Thru Heater Single Element | |
| E21100-3150 [Special Order Heater] BRETT – PINNACLE HURICANE 11kw 240V 3″x15″ Flow Thru Heater Dual Element | |
| C2550-0066ET-A [Special Order Heater] BRETT / GATSBY 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 20-00319, 22-5020 | |
| B21100-2012 [Special Order Heater] BRETT – PINNACLE 11kw 240V 2″x14″ EM1000 Flow Thru Heater Dual Element | |
| 20-00517 [Special Order Heater] COATES 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-0517 | |
| 20-00518 [Special Order Heater] COATES 4.0kw 240V 2″x15″ Flow Thru Heater | |
| C1100-0216 Click Here For Details COLEMAN 1.0kw 120V 1.5″x10″ Flow Thru Heater Replaces: 20-00450 | |
| C2500-2311 [Special Order Heater] CORRECT TECH / INGENIOUS PROD 5.5kw 240V 2″x11″ Flow Thru Heater Replaces: C2550-2311ET, 20-00635, B24055Y | |
| C2400-2311 Click for Details CORRECT TECH / INGENIOUS PROD 4.0kw 240V 2″x11″ Flow Thru Heater Replaces: C2400-2311ET, 20-00634, B24040Y | |
| C2500-2315 [Special Order Heater] CORRECT TECH 5.5kw 240V 2″x14.5″ Flow Thru Heater Replaces: C2550-2315ET, 20-00486 | |
| C2400-2315ET [Special Order Heater] CORRECT TECH 4.0kw 240V 2″x14.5″ Flow Thru Heater Replaces: C2400-2315ET, 20-00484 | |
| C2400-2300ET Click for Details CORRECT TECH 4.0kw 240V 2″x12.5″ Flow Thru Heater | |
| C2600-C1774-1 [Special Order Heater] EMERALD / CONWAY 6.0kw 240V 1.5″x16″ Flow Thru Heater | |
| C2550-3600ET-G [Special Order Heater] GECKO 5.0kw 240V 3″x15″ Dual Element Flow Thru Heater | |
| C2450-3101ET [Special Order Heater] GECKO 4.5kw 240V 3″x15″ Flow Thru Heater | |
| C2550-3602ET-G [Special Order Heater] GECKO 5.5kw 240V 3″x15″ Flow Thru Heater | |
| C2550-0601 Click for Details GECKO 5.5kw 240V 2″x15″ M Class Flow Thru Heater Replaces: C2550-0601ET, B24055LAS, B24055LASD, B24055U, 20-00250, 20-00251, 20-00249, & 20-00270 | |
| C2400-0601 Click For Details GECKO 4.0kw 240V 2″x15″ M Class Flow Thru Heater Replaces: WATKINS C2400-C3330-1A, WATKINS C2400-C2695-1, B24040LAS, 20-00294, NORDIC C2695-1, C2400-0601ET, 20-00271, 20-00280, 20-00281, 20-00292, 20-00296, & 20-00410 | |
| C2550-0800 Click For details GECKO 5.5kw 240V 2″x15″ S Class Flow Thru Heater Replaces: C2550-0800ET, B24055GM, 20-00272, & 20-00274 | |
| C2400-0800 Click for Details GECKO 4.0kw 240V 2″x15″ S Class Flow Thru Heater Replaces: C2400-0800ET, B24040GM, 20-00284, & 20-00285 | |
| C2550-0155 Click For Details HERCULES 5.5kw 240V 2″x18″ Flow Thru Heater Replaces: C2550-0157, C2550-0154, & 48-3300-10-154H; 48-3300-10-155H | |
| C2550-0309 [Special Order Heater] HYDRO QUIP 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-0309ET, 20-00287C, & B23025R1 | |
| C2550-0307 Click here for details HYDRO QUIP 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-0307ET, 20-00227, 20-00328 | |
| C2450-0307 Click For Details HYDRO QUIP 4.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2450-0307ET | |
| C2400-0307 [Special Order Heater] HYDRO QUIP 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: C2400-0307ET | |
| C2550-0002 [Special Order Heater] HYDRO QUIP 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-0002ET, 20-00224 | |
| C2400-0002 [Special Order Heater] HYDRO QUIP 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: C2400-0002ET | |
| C21100-3077 [Special Order Heater] HYDRO QUIP 11kw 240V 3″x19.25″ Dual Element Flow Thru Heater | |
| C1100-1200-1 Click for Details HYDRO QUIP 1.0kw 120V 2″x10″ Flow Thru Heater | |
| C1100-0012 [Special Order Heater] JUMP KING 1.0kw 120V 1.5″x8.5″ Flow Thru Heater Replaces: 48-3400-30-01-012 | |
| C2400-0001 [Special Order Heater] 4.0kw 240V 2″x12″ Flow Thru Heater Replaces: 48-3600-10-001H | |
| C2550-0736 Click for Details LA – ADVANCED 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: B24055LA2, 48-3300-10-736H | |
| C2550-0071 [Special Order Heater] LA – ADVANCED 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: B24055LA, 48-3300-10-071H | |
| C2550-0073 [Special Order Heater] MADDOX ENT. 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 20-00326, C2550-0073-S (Set), C2550-0072 | |
| C2400-0073 Click For Details MADDOX ENT. 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: 20-00247, C2400-0073-S (Set) | |
| C2400-C2550-2 [Special Order Heater] NORDIC 4.0kw 240V 2″x15″ Flow Thru Heater | |
| C2550-0313N Click for Details NUWAVE/WEST COAST 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 20-00348, B24055C1 | |
| C2400-0313N [Special Order Heater] NUWAVE/WEST COAST 4.0kw 240V 2″x15″ Flow Thru Heater | |
| C2550-0213N Click for details NUWAVE/WEST COAST 5.5kw 240V 2″x19″ Flow Thru Heater Replaces: C2550-0213, 20-00406, B24055C, 48-3300-10-013H | |
| C2400-0213N [Special Order Heater] NUWAVE/WEST COAST 4.0kw 240V 2″x19″ Flow Thru Heater | |
| C2550-0256 Click for details SBSG 5.5kw 240V 2″x15″ Flow Thru Heater LX20/25/30 Replaces: C2550-0256ET, 48-3300-10-256H | |
| C2400-0256 [Special Order Heater] SBSG 4.0kw 240V 2″x15″ Flow Thru Heater LX20/25/30 Replaces: C2400-0256ET | |
| C2550-0056 Click for details SUNDANCE/SBSG 5.5kw 240V 2″x15″ Flow Thru Heater AP1 & LX15 Replaces: C2550-0056ET, B24055Q(QC), 20-00227, C2550-0556 (SC), C2550-0556 | |
| C2400-0056 Click for details SUNDANCE/SBSG 4.0kw 240V 2″x15″ Flow Thru Heater AP1 & LX15 Replaces: C2400-0056ET, B24040Q(QC), 20-00354, C2400-0556 | |
| C2550-1002 Click for details SUNDANCE/SBSG 5.5kw 240V 2″x12″ Flow Thru Heater AP4 & LX10 Replaces: C2550-1002ET, 48-3300-10-002H / 48-3300-10-003H | |
| C2400-1002 Click for details SUNDANCE/SBSG 4.0kw 240V 2″x12″ Flow Thru Heater AP4 & LX10 Replaces: C2400-1002ET, 48-3600-10-002H | |
| C2550-0120 Click for Details SUNDANCE/SBSG 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: 48-3300-10-120H / 6500-211 | |
| C2550-0267ET Click for Details SUNDANCE/SBSG 5.5kw 240V 2″x15″ Flow Thru Heater Replaces: C2550-0267 | |
| C2400-0267ET [Special Order Heater] SUNDANCE/SBSG 4.0kw 240V 2″x15″ Flow Thru Heater Replaces: C2400-0267 | |
| C2550-0119 Click Here to View SUNDANCE/MARQUIS 5.5kw 240V 2″x15″ L Shape Heater Replaces: 48-3300-10-119H | |
| C2550-0104 Click Here to View SUNDANCE 5.5kw 240V 2″x12″ Flow Thru Heater | |
| C2400-0104 [Special Order Heater] SUNDANCE 4.0kw 240V 2″x12″ Flow Thru Heater | |
