Heater, Low Flo, After Market, 6KW Heater Assembly

Item #: 73790-AM
$363.03

This 6kw PDR Titanium Heater is the after market replacement heater for all 1995-now Hot Spring and Tiger River spa models. It includes the High-Limit and Control Thermistors, thermistor adapters, wire clips, 1/4 inch barbed adapter, and a small section of 1/4 tubing for the bleed line.

Please note: This is the after market heater, for the OEM part please use 73790.

This part can be found on many Limelight, Hot Spring, Tiger River models from 1995 to 2019

View compatibility table & diagrams

View OEM
SKU: 73790-AM Categories: , Tags: ,

Description

What’s included: PDR heater, control and hi limit thermistor, thermistor adapters, wire clips, 1/4″ barbed adapter, & small section of 1/4″ tubing for bleed line.

This after-market 6kw PDR heater is a great option for people looking for a less expensive alternative to the original heater OEM heater. This heater hooks up to 3/4 inch tubing and has a 1/4 inch nipple on the back of the heater for a bleed line to connect.

This replacement heater doesn’t have a plug on the end of the power cord like on the 1995-1996 spas. In most applications, the heater is connected directly inside the spas control box. If your existing heater plugs into the bottom of your control box, you may need to utilize the cord end (plug) from your old No Fault heater and splice it onto a PDR.

What is the difference between the OEM and Generic PDR heaters?
There is no technical difference between the OEM and generic PDR heaters. Both heaters have a a 12 month warranty. The only non-technical difference is price, and the OEM heater does not come with the high-limit and control thermistors.

Note: The 73791-AM can be used as an alternative to this heater in a spa that’s wired 230 volts. Some service techs prefer the 4kW PDR to this 6 kW siting that it puts less strain on old/weakening 30 amp GFCI breakers.
73790-AM draws 25 amps (wired 230 volts)
73791-AM draws 16 amps (wired 230 volts)

Tip: You can also utilize the cord end (plug) from your old No-Fault heater and splice it onto a PDR if needed.

*Your existing heater may look like one of these discontinued heaters below:

Used 1995-1996   Both Hot Spring & Tiger River (No-Fault 1500 & 5500)

Used 1997-2003  Hot Spring only (No-Fault 6000)

Used 1997-2003  Both Hot Spring & Tiger River (No-Fault 4000 & 6000)

Note#1: This PDR (power-down-reset) heater eliminates the manual reset button, which means that you never need to remove the equipment door to reset the heater. Simply power down the spa for 30 seconds by either tripping off the GFCI breakers in the subpanel (on 230volt models) or unplugging the spa (115volt models). Yay for this massive improvement! There is something about the manual reset circuitry on heaters that causes them to expire prematurely. This heater replaces all heaters in all 1995-now Hot Spring, Tiger River and Limelight hot tubs which includes the No-Fault 6000 heaters, Watkins No-Fault 5500 and the No-Fault 1500 cartridge-style heater.

Note#2: The inlet thermistor port on these style heaters may require a wrench to thread in the thermistor.

Replacement Hint: It’s easier to replace a heater if the spa is drained. However, some folks leave the water in the spa, disconnect the vinyl tubing from their old heater and insert wine corks into the ends of the vinyl tubing. This ensures a minimal amount of water loss during the change out. Clever repair techs use radiator hose pinch-off pliers to clamp off the tubing.

View compatibility table & diagrams

Ref. Diagram
# 1 PDR Heater (Limelight 2019 - 2019) View Diagram
No Fault 5500 Cartridge Heater 1995-1996 (Hot Spring 1995 - 1996) View Diagram
# 2 No Fault Heater 1997-2002 (Hot Spring 1997 - 2000) View Diagram
# 2 No Fault Heater (Limelight 2012 - 2017) View Diagram
brand model years
Limelight Beam I (BMI) 2019
Hot Spring Grandee (G) 2007
Hot Spring Prodigy (H) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring Prodigy (HN) 2019
Hot Spring Sovereign (I) 2007, 2008, 2009, 2010
Hot Spring Sovereign (II) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring Sovereign (IIN) 2019
Hot Spring Jetsetter (J) 2007, 2008, 2009, 2010
Hot Spring Jetsetter (JJ) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring Jetsetter JJN (JJN) 2019
Hot Spring Highlife Jetsetter NXT (JTN) 2014, 2015, 2016, 2017, 2018, 2019
Hot Spring Vanguard (V) 2007
Hot Spring Vanguard (VV) 2007, 2008, 2009, 2010, 2011, 2012, 2013
Limelight Beam II (BMII) 2019
Hot Spring Classic (F) 1995, 1996
Hot Spring Classic 230v. (FH) 1995, 1996
Hot Spring Grandee (G) 1995, 1996
Hot Spring Grandee (GQ) 1996
Hot Spring Prodigy (H) 1995, 1996
Hot Spring Sovereign (I) 1995, 1996
Hot Spring Sovereign 230v. (IH) 1995, 1996
Hot Spring Sovereign 230v. (IHQ) 1996
Hot Spring Sovereign (IQ) 1996
Hot Spring Jetsetter (J) 1995, 1996
Hot Spring Jetsetter (JQ) 1996
Hot Spring Highlife (K) 1995, 1996
Hot Spring Summit (R) 1995, 1996
Hot Spring Landmark (S) 1995, 1996
Tiger River Siberian (L) 1995, 1996
Tiger River Khyber (LH) 1995
Tiger River Bengal (M) 1995, 1996
Tiger River Manora 230v. (MH) 1995, 1996
Tiger River Tondi Round (P) 1995, 1996
Tiger River Tondi Round 230v. (PH) 1995, 1996
Hot Spring Classic (F) 1997, 1998, 1999, 2000
Hot Spring Classic (FQ) 1997, 1998, 1999, 2000
Hot Spring Grandee (G) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Grandee (GQ) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Prodigy (H) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Prodigy (HQ) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Sovereign (I) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Highlife Limited Edition (ILE) 2002
Hot Spring Sovereign (IQ) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Jetsetter (J) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Jetsetter (JQ) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Landmark (S) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Landmark (SQ) 1997, 1998, 1999, 2000, 2001, 2002
Hot Spring Vanguard (V) 2001, 2002
Hot Spring Vanguard (VQ) 2001, 2002
Tiger River Caspian (CHP) 2004
Tiger River Caspian (CPN) 2003
Tiger River Siberian (L) 1997, 1998, 1999, 2000, 2001, 2002
Tiger River Siberian (LA) 1997
Tiger River Siberian (LQ) 1999
Tiger River Bengal (M) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Tiger River Bengal (MA) 1997
Tiger River Bengal (MM) 2005
Tiger River Bengal (MQ) 1999
Tiger River Sumatran (N) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Tiger River Sumatran (NA) 1997
Tiger River Sumatran (NQ) 1999
Limelight Bolt (BLT) 2012, 2013, 2014, 2015, 2016, 2017
Limelight Beam I (BMI) 2018

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