Name: PDR Titanium Heater After Market, 4kW - Backyard Plus
SKU: 73791-AM
Price: 500.00 USD
Availability: InStock
Rating: 5.00 (2 reviews)

PDR Titanium Heater After Market, 4kW

Sku: 73791-AM

Rated 5.00 out of 5 based on 2 customer ratings

(2 customer reviews)

$500.00

This AFTER MARKET 4kW PDR Titanium Heater is the current replacement for all 2003-2009 4kW No Fault Heaters and comes with both a high limit and control thermistor. If you’re replacing a 76228 Titanium Heater (pressure switch version) you’ll need to add a pressure switch bypass jumper.

This part can be found on many Hot Spring, Limelight, Tiger River models from 1994 to 2025

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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 4kW PDR Titanium Heater is the current replacement for all 2003-2009 4kW No-Fault Heaters. If you’re replacing a 76228 Titanium Heater (pressure switch version) you’ll need to add a pressure switch bypass jumper 72768. For the 6kW (6000 watt) version, please see the 73790.

What is the difference between the OEM and the After Market PDR heaters?
There is no technical difference between the OEM and the after-market PDR heaters. Both heaters have 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.

Reference: 26-C3160-2S

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2 reviews for PDR Titanium Heater After Market, 4kW

Based on 02 rating(s)

02 Customer(s) recommended this item

Quality

100 %

Price

100 %

Service

100 %

Reviewed by 01 customer(s)

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Paul
Great support and just the product I needed

. Was able to self service and get my Hot Spring spa up and running without a costly service visit. Thanks for the info and great videos backyardplus!

March 10, 2025

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Anonymous
Works great

A great replacement for the OEM and less likely to leak now that the pressure switch is contained.

March 10, 2025

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Ref.	Diagram
# 1	PDR Heater (Hot Spring 2017 - 2019)	Shop by Diagram
# 2	No Fault Heater (Hot Spring 2007 - 2018)	Shop by Diagram
# 2	No Fault 5500 Cartridge Heater 1995-1996 (Hot Spring 1995 - 1996)	Shop by Diagram
# 2	No Fault Heater 1997-2002 (Hot Spring 1997 - 2002)	Shop by Diagram
	Heater Factory Install (1994) (Hot Spring 1994 - 1994)	Shop by Diagram

brand	model	years
Hot Spring	Aria NXT (ARN)	2022
Limelight	Flair (FLR)	2022, 2023, 2024
Limelight	Flash (FSH)	2022
Hot Spring	Grandee (GG)	2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring	Grandee NXT (GGN)	2022, 2023
Hot Spring	Envoy (KK)	2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring	Envoy NXT (KKN)	2022, 2023, 2024
Limelight	Pulse (PLS)	2022
Limelight	Prism (PSM)	2022
Hot Spring	Vista (SS)	2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Hot Spring	Triumph (TRHN)	2019
Hot Spring	Vanguard (VV)	2014, 2015, 2016, 2017, 2018
Hot Spring	Vanguard NXT (VVN)	2022
Hot Spring	Aria (AR)	2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring	Classic (F)	1994
Hot Spring	Classic 230v. (FH)	1994
Hot Spring	Prodigy (H)	1994
Tiger River	Caspian (CHP)	2004, 2005, 2006, 2007, 2008, 2009, 2010
Tiger River	Siberian (L)	2003, 2004
Limelight	Gleam (GLM)	2013, 2014, 2015, 2016, 2017
Limelight	Glow (GLW)	2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
Hot Spring	Aria (AR)	2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring	Grandee (GG)	2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring	Envoy (KK)	2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Hot Spring	Vista (SS)	2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Tiger River	Caspian (CHP)	2005, 2006, 2007, 2008, 2009, 2010
Limelight	Beam II (BMII)	2018
Limelight	Flair (FLR)	2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Limelight	Flash (FSH)	2018
Limelight	Gleam (GLM)	2013, 2014, 2015, 2016, 2017
Limelight	Glow (GLW)	2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
Limelight	Pulse (PLS)	2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Limelight	Prism (PSM)	2018
Hot Spring	Classic 230v. (FH)	1995, 1996
Hot Spring	Grandee (G)	1995, 1996
Hot Spring	Grandee (GQ)	1996
Hot Spring	Sovereign 230v. (IH)	1995, 1996
Hot Spring	Sovereign 230v. (IHQ)	1996
Hot Spring	Highlife (K)	1995, 1996
Hot Spring	Summit (R)	1995, 1996
Hot Spring	Landmark (S)	1995, 1996
Tiger River	Khyber (L)	1995, 1996
Tiger River	Manora 230v. (MH)	1995, 1996
Tiger River	Tondi Round 230v. (PH)	1995, 1996
Hot Spring	Grandee (G)	1997, 1998, 1999, 2000, 2001, 2002
Hot Spring	Grandee (GQ)	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
Tiger River	Caspian (CHP)	2005
Tiger River	Siberian (L)	2003, 2004
Hot Spring	Highlife (K)	1994