This 2014 No-Fault PDR Titanium Heater is the newest factory upgrade replacement heater from the makers of Hot Springs spas. Its double-pass sleek design replaces all previously discontinued heater styles. The double-pass feature efficiently heats the water in two stages and oh what a perfect job it does! Now factory approved and warrantied for all 115 volt 1.5kW and 230 volt - 6kW installations for all 1995-now Hot Springs and Tiger River spa models. For 4kW, 230 volt applications see the 73791 PDR. Your existing 3/4" vinyl tubing will attach to this heater with no worries. The thermistors have different thread sizes to insure they can't accidentally be reversed when re-installing them into this new PDR heater. The also have different tips on the ends of the wire to insure they can't accidentally be plugged into the wrong port on the IQ Control Box.
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 in to the bottom of your control box, you may need the appropriate adapter. Adapters are listed next to your spa model on the chart below.
Note: The 73791 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 draws 25 amps (wired 230 volts)
73791 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 heater may look like one of these discontinued heaters below:|
Both Hot Spring
& Tiger River
(No-Fault 1500 & 5500
Hot Spring only
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 sub panel (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 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 insures a minimal amount of water loss during the change out. Clever repair techs use radiator hose pinch off pliers to clamp off the tubing.
Check Serial Number Compatibility
Check Country Compatibility
- Please select the country
- United States of America1|120|60
- Antigua and Barbuda10|230|50
- Cape Verde37|220|50
- Cayman Islands38|120|60
- Costa Rica45|110|60
- Czech Republic49|220|50
- Dominican Republic53|110|60
- El Salvador57|120|60
- Falkland Islands61|220|50
- Faroe Islands62|220|50
- French Polynesia67|220|50
- Georgia, Republic of70|220|50
- Macedonia, Republic of112|220|50
- Netherlands Antilles134|220|50
- New Caledonia135|220|50
- New Zealand136|230|50
- Norfolk Island141|230|50
- Northern Ireland142|230|50
- Saint Kitts159|230|60
- Saint Lucia160|240|50
- Saint Vincent and the Grenadines161|230|50
- San Marino163|220|50
- Sao Tome and Principe164|220|50
- Saudi Arabia165|230|50
- Slovak Republic170|220|50
- Solomon Islands172|240|50
- South Africa174|220|50
- Sri Lanka176|230|50
- Saint Helena177|230|50
- Saint Pierre and Miquelon178|115|60
- Syrian Arab Republic184|220|50
- Trinidad and Tobago192|115|60
- United Arab Emirates200|230|50
- Great Britain201|240|50
- British Virgin Islands208|110|60
- Channel Islands214|240|50
- Puerto Rico215|120|60
- US Virgin Islands220|120|60
- American Samoa224|120|60
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Aloha Got the thermostat part a couple of days ago and installed it with no problems and have been enjoying the use of our spa again , Thanks for the quick delivery and prompt service . Bob
Your site is very easy to navigate, purchasing was very easy, and the shipment was well package and received quickly. I really appreciate being able to find all this stuff for a 14 year-old spa. Thanks
We received order very quickly and we received the correct item(s)in our order, so far everything is working great and we are happy with our order and the product ordered as well as reasonable prices that you offer.
S. A. ,
Substitute parts worked as described. The shipping was on time. Tub is now working fully again. Directions we very clear to understand.
It was exactly what we needed and now our spa is working properly. . . well well find out after it starts getting cold! ;)
The part we ordered came quickly and worked well, but the best part was the YouTube video that demonstrated how to take out the old and put in the new. Much easier to follow the video than the instructions that came with the heater relay. I also liked how easy it was to find the exact part needed. Decent price, too.
B. Z. ,
You properly diagnosed the problem with my hot tub and suggested the parts I should replace. I received the parts in a couple of days and replaced them per your instructions. My hot tub now works perfectly. Thanks for your help.
W. K. ,
Thanks exactly what I needed, ordered, and packaged very well. Only issue encountered was poor delivery service by UPS, not under your control. Thanks again Walt