Vertical Low Flow spa heaters are tube or canister style heating tubes mounted to the spa frame or control box. Low flow heaters operate through their own plumbing separate from jet pumps.
Low Flow heaters can usually be identified by their small tubing (3/4" or 1") and presence of a circulation pump.
As hot tub companies do not typically make their own spa heaters, they'll usually purchase them in bulk from companies that manufacture heaters. The largest dedicated heater manufacture is Thermproducts which was formally known as (RMF Related Metal, Aquatemp, Thermocore). Most spa companies have their heaters under private label.
This makes it easy to find replacements. If you do not succeed in matching part numbers from your heater just let us know & we'd be happy to help.
Stocked heaters have a 'Click Here Link' that will take you to that specific heater on www.spapartsshop.com Heaters which aren't too common will have [Special Order Heater] which means we'd have to order one in for you. Special orders usually take 7-10 days. Contact us for ordering details.
| C3314-1 Click Here SUNDANCE 5.5kw 240V 3″x13″ Vertical Low Flow Plastic “Smart” Heater | |
| E2550-3314 Click Here 5.5kw 240V 3″x13″ Vertical Low Flow Heater (with box, & wires) | |
| E2400-0420ET Click Here SARATOGA 4.0kw 240V 3″x13.5″ Vertical Low Flow Heater (3/4″x90° barbs) Replaces: E2400-0421ET, 20-00540, E2550-0540ET / E2400-0540ET | |
| E2550-0320ET Click Here SARATOGA 5.5kw 240V 3″x13.5″ Vertical Low Flow Heater (3/4″x90° barbs) Replaces: E2550-0320, E2550-0320+ | |
| E2400-0320ET (SPECIAL ORDER, Contact us for details) Or Use 5.5Kw above SARATOGA 4.0kw 240V 3″x13.5″ Vertical Low Flow Heater (3/4″x90° barbs) Replaces: E2400-0320, E2400-0320+ | |
| C2400-C3037-2 (SPECIAL ORDER, Contact us for details) SARATOGA 4.0kw 240V 2″x13.5″ Vertical Low Flow Heater (3/4″x90° barbs) Replaces: C2400-C3037 | |
| E2300-0542ET (SPECIAL ORDER, Contact us for details) SARATOGA 3.0kw 240V 3″x13″ Vertical Low Flow Heater (3/4″x90° barbs, dual elements) Replaces: E2300-0321, E2300-0321ET, 20-00542 | |
| E2550-0520ET (SPECIAL ORDER, Contact us for details) COUNTRY LEISURE 5.5kw 240V 3″x13.5″ Vertical Low Flow Heater Replaces: E2550-0520 | |
| E2550-0028C Click Here 5.5kw 240V 3″x10″ Vertical Low Flow Heater Clearwater / Artesian (w/pressure switch, bare cord, 1″ barbs) Replaces: 26-08112, 26-08116, 26-08103, 26-08106, E2550-0028 | |
| E2400-0028C (SPECIAL ORDER, Contact us for details) 4.0kw 240V 3″x10″ Vertical Low Flow Heater (w/pressure switch, bare cord, 1″ barbs) Replaces: 26-08108, 26-08118, 26-08119, 26-08109 | |
| 26-08235 (SPECIAL ORDER, Contact us for details) MAAX 3.6kw 240V 3″x15″ Vertical Low Flow Heater (w/dual element, & pressure switch) | |
| E2360-0245 (SPECIAL ORDER, Contact us for details) MAAX 3.6kw 240V 3″x15″ Vertical Low Flow Heater (w/dual element, & pressure switch, with 1.5″ inlet) Replaces: 26-08245 | |
| E2550-0300ET Click Here GATSBY 5.5kw 240V 3″x7″ Vertical Low Flow Heater (w/pressure switch, and cord) Replaces: 26-08174, E2400-0301ET | |
| E2400-0300ET Click Here GATSBY 4.0kw 240V 3″x7″ Vertical Low Flow Heater (w/pressure switch, and cord) Replaces: 26-08174, E2400-0301ET | |
| E2400-1001 (SPECIAL ORDER, Contact us for details) LEISURE BAY 4.0kw 240V 3″x17.5″ Vertical Low Flow Heater (with wet element) Replaces: F2400-1001, 58042, 58042 | |
| E2550-0120C (SPECIAL ORDER, Contact us for details) DYNASTY 5.5kw 240V 3″x12″ Vertical Low Flow Heater (with box, pressure switch, 1″ barb, 1″ socket) Replaces: 26-08125 (3/4″ barb), 26-08147 (Sunbelt), 26-08120 (Dynasty), 26-08153 (3/4″ barb), 26-08155 (JJ plug), 26-08156 (plastic enclosure) | |
| E2400-0120C (SPECIAL ORDER, Contact us for details) DYNASTY 4.0kw 240V 3″x12″ Vertical Low Flow Heater (with box, pressure switch, 1″ barb, 1″ socket) Replaces: 26-00155, 26-08121, 26-08145, 26-08146, 26-08159, 26-08157 (3/4″ barb) | |
| 26-08116 (SPECIAL ORDER, Contact us for details) MAAX SPAS 3.0kw 240V 3″x9.5″ Vertical Low Flow Heater (with pressure switch, amp plug cord, 1″ barbs) | |
| 26-08114 (SPECIAL ORDER, Contact us for details) MAAX SPAS 4.0kw 240V 3″x9.5″ Vertical Low Flow Heater (with pressure switch, amp plug cord, 1″ barbs) Replaces: 26-08115, 26-00102 | |
| E2550-0029C Click Here 5.5kw 240V 3″x9.5″ Vertical Low Flow Heater (with pressure switch) Replaces: 26-08107, 26-00107 | |
| E2400-0007 Click Here NUWAVE 4.0kw 240V 3″x9.5″ Vertical Low Flow Heater Replaces: 20-00514 | |
| E2400-0004 Click Here D1, CRYSTAL PURE 4.0kw 240V 3″x10″ Vertical Low Flow Heater Replaces: 48-3600-40-004 | |
| E2200-0004 (SPECIAL ORDER, Contact us for details) D1, CRYSTAL PURE 2.0kw 240V 3″x10″ Vertical Low Flow Heater | |
| E2550-0351ET Click Here SBSG 5.5kw 240V 3″x9″ Vertical Low Flow Heater (with 1″ barbs) Replaces: E2550-0351 | |
| E2400-0351ET (SPECIAL ORDER, Contact us for details) SBSG 4.0kw 240V 3″x9″ Vertical Low Flow Heater (with 1″ barbs) Replaces: E2400-0351 | |
| 26-00257 Click Here MAAX, SAVANNAH 4.0kw 240V 3″x10″ Vertical Low Flow Heater Replaces: 26-00254 | |
| 26-00255 (SPECIAL ORDER, Contact us for details) MAAX, SAVANNAH 5.5kw 240V 3″x10″ Vertical Low Flow Heater | |
| E2550-0114ET (SPECIAL ORDER, Contact us for details) ARTESIAN, MAJESTIC 5.5kw 240V 3″x13″ Vertical Low Flow Heater (w/bulkheaded coated element, box & cord) Replaces: E2550-0114, E2550-0014, E2550-0014ET | |
| E2400-0114ET Click Here ARTESIAN, MAJESTIC 4.0kw 240V 3″x13″ Vertical Low Flow Heater (w/bulkheaded coated element, box & cord) Replaces: E2400-0114, E2400-0014, E2400-0014ET, 48-3600-40-014 | |
| E2550-0001 Click Here CALDERA 5.5kw 240V 3″x11″ Vertical Low Flow Heater (with two dry wells) Replaces: 48-3300-40-001 | |
| E2200-0001 (SPECIAL ORDER, Contact us for details) CALDERA 2.0kw 240V 3″x11″ Vertical Low Flow Heater (with two dry wells) | |
| E2550-0101 Click Here CALDERA 5.5kw 240V 3″x11″ Vertical Low Flow Heater Replaces: E2550-0101ET | |
| E2400-0101 (SPECIAL ORDER, Contact us for details) CALDERA 4.0kw 240V 3″x11″ Vertical Low Flow Heater Replaces: E2400-0101ET, 48-3300-40-101 | |
| E2550-0115ET (SPECIAL ORDER, Contact us for details) ARTESIAN, MAJESTIC 5.5kw 240V 3″x13″ Vertical Low Flow Heater (with 3/4″ barbs, bulkheaded & coated element) Replaces: E2550-0115, E2550-0015, E2550-0015ET | |
| E2400-0115ET Click Here ARTESIAN, MAJESTIC 4.0kw 240V 3″x13″ Vertical Low Flow Heater (with 3/4″ barbs, bulkheaded & coated element) Replaces: E2400-0115, E2400-0015, E2400-0015ET | |
| E2550-1000 Click Here SUNDANCE 5.5kw 240V 3.5″x13″ Vertical Low Flow Heater (with 3/4″ barbs) Replaces: C2783-1 | |
| E2400-0003 Click Here D1 SPAS “SLCV” 4.0kw 240V 3″x10″ Vertical Low Flow Heater (with 3/4″ barbs) Replaces: 48-3600-40-003 | |
| E2200-0003 (SPECIAL ORDER, Contact us for details) D1 SPAS “SLCV” 2.0kw 240V 3″x10″ Vertical Low Flow Heater (with 3/4″ barbs) | |
| E2550-0012 Click Here SBSG/Dynasty 5.5kw 240V 3″x11″ Vertical Low Flow Heater – (with 3/4″ barbs) | |
| E2400-0012 Click Here SBSG 4.0kw 240V 3″x11″ Vertical Low Flow Heater (with 3/4″ barbs) Replaces: 48-3600-40-012 | |
| E2300-0012 (SPECIAL ORDER, Contact us for details) SBSG 3.0kw 240V 3″x11″ Vertical Low Flow Heater (with 3/4″ barbs) | |
| E2400-0027 (SPECIAL ORDER, Contact us for details) PINNACLE 4.0kw 240V 3″x10″ Vertical Low Flow Heater (with 3/4″ barbs) | |
| E2400-0201ET (SPECIAL ORDER, Contact us for details) CALDERA 4.0kw 240V 3″x11″ Vertical Low Flow Heater (with 3/4″ barbs) Replaces: E2400-0201 | |
| E2450-0127ETX Click Here DM, VITA SPAS 4.5kw 240V 3″x11″ Vertical Low Flow Heater (with two pressure switch taps) Replaces: E2450-0127ET, E2450-1127ET | |
| E2400-0127ETX Click Here DM, VITA SPAS 4.0kw 240V 3″x11″ Vertical Low Flow Heater (with two pressure switch taps) Replaces: E2400-0127ET, E2400-1127ET, E2400-0126ET, E2400-0026, E2400-1127 | |
| E2300-0127ETX (SPECIAL ORDER, Contact us for details) DM, VITA SPAS 3.0kw 240V 3″x11″ Vertical Low Flow Heater (with two pressure switch taps) Replaces: E2300-0127ET, E2300-0126ET | |
| E2550-0202ET Click Here GATSBY, HURRICANE, LEISURE BAY 5.5kw 240V 3″x9″ Vertical Low Flow Heater (with 1″ barbs & coated element, 12″ wires) Replaces: E2550-0202-1, E2550-0202, E2550-0202ET-1, E2550-0204, E2550-0204ET, E2550-0102ET, 26-00141 | |
| E2400-0202ET (SPECIAL ORDER, Contact us for details) GATSBY, HURRICANE, LEISURE BAY 4.0kw 240V 3″x9″ Vertical Low Flow Heater (with 1″ barbs & coated element, 12″ wires) Replaces: E2400-0202-1, E2400-0204, E2400-0204ET | |
| E2550-020XET Click Here PINNACLE, LEISURE BAY, HURRICANE 5.5kw 240V 3″x9″ Vertical Low Flow Heater (with 1″ barbs & coated element) Replaces: E2550-020X, E2550-020X-1, 26-00100, 48-3300-40-020 | |
| E2400-0021-NP (SPECIAL ORDER, Contact us for details) CLEARWATER SPAS 4.0kw 240V 3″x10″ Vertical Low Flow Heater (with 1″ barbs) Replaces: E2400-0021ET, E2400-0021, E2400-0021ET-1, 26-00110 | |
| E2400-0221 Click Here CLEARWATER SPAS 4.0kw 240V 3″x10″ Vertical Low Flow Heater (with 3/4″ barbs) | |
| E2550-0203ET (SPECIAL ORDER, Contact us for details) 5.5kw 240V Vertical Low Flow Heater Replaces: E2550-0203 | |
| E2400-0203ET (SPECIAL ORDER, Contact us for details) 4.0kw 240V Vertical Low Flow Heater Replaces: E2400-0203 |
