Low Flow Spa Heaters, 1" Tube Style

Lo Flow hot tub heaters rely on a circulation pump to carry out heating and filtration. Jet pumps function separately & are installed on their own plumbing.

As most tub builders do not make their own heaters, they [heaters] are usually manufactured by Thermproducts which was formally known as (RMF Related Metal, Aquatemp, Thermocore) under private label. This makes replacements easy to find & readily available once part numbers can be found. 
If you do not succeed in matching part numbers from 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.

	C6746-1 (SPECIAL ORDER, Contact us for details) 4KW 120/240v Hawkeye Spa Complete Square heater with cord &  pressure switch Replaces: SEH-4100-NHW-6746
	C3554-1 (SPECIAL ORDER, Contact us for details) COMFORT LINE Spa 1.2kw 240V Low Flow 17″ Straight Heater  (w/26″ cord. Min flow rate 10GPM)
	C3554-2 (SPECIAL ORDER, Contact us for details) COMFORT LINE Spa 2.7kw 240V Low Flow 32″ Straight Heater  (w/26″ cord. Min flow rate 10GPM)
	C3554-3 (SPECIAL ORDER, Contact us for details) COMFORT LINE Spa 4.0kw 240V Low Flow 41″ Straight Heater  (w/26″ cord. Min flow rate 10GPM)
	C3226-1A Click Here JACUZZI, SUNDANCE Spas 4.0kw 240V Low Flow Trombone Heater  (26″x6″ dual element w/26″ 3-wire pigtail cord, & built in TCO) SEH-4300-NHCW-6699
	C3473-1 Click Here CALDERA, WATKINS Spas 4.0kw 240V Low Flow Trombone Heater  (26″x6″ dual element w/24″ pigtail cord & off angle box w 3/4″ barb &  pressure switch cord) IHH-4300-NHW-7340, SEH-4300-NHW-6596
	C3556-1 Click Here D1 Spas 5.5kw 240V Low Flow Trombone Heater  (26″x6″ dual element attaches to Laing pump, w/3ft cord & special plug Comes with RPL5-6300K pump kit) PEH-4326-NH-6000, PEH-5556-NHW-6388
	C3556-2 (SPECIAL ORDER, Contact us for details) ABER-PACIFIC Spas 4.0kw 240V Low Flow Trombone Heater  (26″x6″ dual element attaches to Laing pump, w/3ft cord & special plug Comes with RPL5-6300K pump kit) PEH5526-NH-6742, PEH-5526-NH-6340-PEH-5556-NHW-6388
	C3474-1 (SPECIAL ORDER, Contact us for details) 4.0 kw 240V Low Flow Square Back Heater  (low profile w/3amp cord and pressure switch w/cord.  Min flow rate 10 gpm)
	C3238-1A Click Here ABER-PACIFIC Spas 5.5kw 240V Low Flow Square Back Heater  (20″x16″x14″ w/32″ pigtail cord) SHH-5500-NHCW6938
	C3550-1 Click Here D1, GECKO, BAY SPAS 5.5kw 240V Low Flow Square Back Heater (21″x14.5″ dual element with 4 wires, wraps around  Gecko M class control box, with TCO, & plate) SHH-5500-NH6871, SSH-5200-NH-6785, NHH-5500-NH-7328, SHH-5500-NH-6771
	C3549-1 (SPECIAL ORDER, Contact us for details) ABER-PACIFIC, ARTESIAN, DYNASTY, GECKO Spas 5.5kw 240V  Low Flow Square Back Heater  (21″x14.5″ dual element with 4 wires, wraps around Gecko  M class control box.  See diagram on tech page) SHH-5500-NH-6727, C3242-1A
	C3236-1A Click Here ARTESIAN, ATERA, HYDRO QUIP, SANTA BARBARA,  LA SPAS 4.0kw 240V Low Flow Square Back Heater  (26″x14″ with 26″ cord. Pressure switch tap on side is plugged) SEH-5500-NHW-6698-6676, SEH-5500-NHW-7007, PEH-5526-NWH-6938 SEH-4100-NHCW-7130, SHH-5500-NH-6739, SEH-5500-NHW-6692/7154, SEH-5500-NHW-6652, SEH-5500-NHCW-6632 SHH-4100-NH-6739, SEH-5500-NHW-6659
	C3229-1A Click Here SUNDANCE Spas 5.5kw 240V Low Flow Square Back Heater  23″x10″x15″ – 3 wires with folk connectors & built-in TCO.  Can use C3229-2A heater and change wire connectors SEH-550-NH-6699
	C3229-2A Click Here SUNDANCE Spas 5.5kw 240V Low Flow Square Back Heater  23″x10″x15″ for Jacuzzi only – with spade connectors For Jacuzzi ony up through model year 2007. SEH-5500-NH-6698
	C3548-1 (SPECIAL ORDER, Contact us for details) D1 Spas 5.5kw 240V Low Flow Heater (with built in TCO) SEH550-NHC-7300, SEH-5200-NH-6757, SEH-5500-NH-6144
	7211 (OBSOLETE) LAING “TRUMPET” 6.0kw 240V Low Flow Heater OBSOLETE – To be replaced by C3564-1 heater with manual reset high limit
	6758 (OBSOLETE) LAING “TRUMPET” 4.0kw 240V Low Flow Heater OBSOLETE – To be replaced by C3564-2 heater with manual reset high limit
	C3564-1 Click Here 6.0kw 240V Heater With Manual Reset Hi limit IHH-4000-NHCW-6759, IHH-4000-NHCW-7211.0
	C3564-2 Click Here 4.0kw 240V Heater With Manual Reset Hi limit IHH-4000-NHCW-6758
	C3160-1 WATKINS 6.0kw 240V PDR Heater Proprietary item, contact WATKINS distribution network for purchasing information.
	C3160-2 WATKINS 4.0kw 240V PDR Heater Proprietary item, contact WATKINS distribution network for purchasing information.
	72795 HOT SPRINGS 6.0kw 240V No Fault Heater (with sensor cord) Proprietary item, contact Hot Spring distribution network for purchasing information.
	73039 HOT SPRINGS 4.0kw 240V No Fault Heater (with sensor cord) Proprietary item, contact Hot Spring distribution network for purchasing  information.