Question about Jacuzzi RapidHeat In-Line Heater U395000 [ Bathtubs and Whirlpools,

1 Answer

Can Jacuzzi Rapid Heat inline heater be installed upside down?

I'm in the process of installing a Jacuzzi Rapid Heat inline heater on my whirlpool bathtub. Unfortunately, it does not fit normally on the suction line due to a jet just above it. Can the heater be installed upside down? Also, are these heaters directional spacific as to which end is the water input and output?

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  • Jacuzzi Master
  • 719 Answers

You do not want to install any heater upside down because if any debris gets inside the heater pressure switch while it is running it will NOT shut off once the pump shuts off.


Rod
US Parts Center
888-521-6183

Posted on Feb 19, 2013

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: Rapid Heater for Jacuzzi

The light is supposed to be on when the tub is full of water and the pump comes on. Make sure the heater is plugged into a seperate breaker, it cannot be on the same line as the pump.
Look on the heater for a label. If your heater is installed on the discharge side of the pump it should say "pressure heater" on it. If it is installed in front of the pump it should say "Vacuum Heater" on it.
Once installed, fill the tub with water and turn the pump on. If it is installed in the correct position the light will come on when the pump turns on.

Posted on Feb 24, 2009

John Hartsek

  • 63 Answers

SOURCE: Need to heat water up more

I had same problem... fixed by turning hot water tank up to 145 degrees...but PLEASE do not do this if you have young children..that is hot and will burn!.. but does work(did this 8 years ago!)

Posted on Mar 16, 2009

Anonymous

  • 16 Answers

SOURCE: No heat with Rapid Heat U395000 Jacuzzi jetted tub

when you changed the heater did you make sure you also changed out the temp sensor cause most of the time calciun builds up an is the reason for both the heater an sensor to fail calcium is ok at temps above 93.6 degrees but as soon as the temp drops below this point it will come out of solution an start to harden on the element an sensor.Always make sure to that you are getting power from the spa pack to the heater check for voltage at the main leads on the heater just because it says its on does not always mean you are getting power to the heater.Always remember with spas the problem lies where the power dies.sometimes it can even be your main top side controls they can go bad an indicate the heat is on but will not relay that to the heater.make sure you got the correct kilowatt heater also an that you have the correct one in terms of 240v or 110v also from the thousands of heaters i have replaced in spas over the years i always check to see if i am getting the correct omhs reading before i install them should be around 8-10 for a 110 an 12-13 for a 240

Posted on Mar 27, 2010

uspartscente

US Parts Center

  • 719 Answers

SOURCE: How do I ground my rapid heat in-line jacuzzi tub

connect it to one of the copper water lines. that will do the trick

Posted on Sep 06, 2010

uspartscente

US Parts Center

  • 719 Answers

SOURCE: I have a new Jacuzzi

The bath heater you have is not designed to HEAT water - they only Maintain what you start with.
You need to start the bathtub with the hot water you want. It will only heat about 1-2 degrees an hour.

Posted on Jan 12, 2011

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MY JACUZZI DOESN'T SEEM TO HAVE ANY PLACE TO PUT A HEATER AND IT IS TOO COLD HERE TO USE IT VERY MUCH. IT IS AN OLDER MODEL. IS THERE A HEATER THAT WE COULD USE TO PUT HEAT IN OUR JACUZZI. AM I MISSING...


In line heaters will not HEAT the water, they will only maintain the temperature inside the tub within a few degrees. You should not try to install the heater yourself, it would be best to have a plumber come over and give you a quote on how much it would be to install it. A plumber can look at the tub, see if there is a place that the heater can be CUT IN to the pipes, and install it. You likely won't get it to work. The inline heaters are required to be put on a GFCI circuit because they are powered in a wet environment. Unless your tub is not hardwired in to the house, and you actually have a GFCI circuit under the tub. But like I said, these do not heat the tub, they only maintain. And the life of these is not very long if you use soaps and shampoos in the tub while the heater is on. It won't take any time at all for the oils to build up on the elements, rendering it useless.

Apr 28, 2011 | Jacuzzi RapidHeat In-Line Heater U395000 [...

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Hello, a few months ago I installed a jacuzzi tub with a Rapid Heat heater. I'd like to clean the tub either by the bleach/detergent method or the granule cleaning packet method. My question is should I...


Any recommended (see the tub instructions) cleaning product should be fine in the heater -- and the higher temperature of the "cleaning solution" should enhance the process. Just be sure to flush the tub's entire system with clean water before you bathe in it again!

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I have an older Jacuzzi with 4 corner spa jets. There is no inline heater in it. Since it takes about 180 gallons of water to fill it I would like to add an inline heater so that the heat can be maintained...


I have the same problem. I talked to Jacuzzi technical support and they said that they don't sell a product that will retrofit (they make the couplings a custom size to prevent this.) It's really a drag since I really don't want to install a whole new tub just to maintain water temperature. I haven't given up so if you found a solution please post.

Feb 18, 2011 | Jacuzzi RapidHeat In-Line Heater U395000 [...

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I have a new Jacuzzi tub with a Rapid In-Line Heater. When I fill the tub the water the initial temp is 67 degrees. The heater only increases the temp to 71 degrees. What is wrong with the heater ,if...


The bath heater you have is not designed to HEAT water - they only Maintain what you start with.
You need to start the bathtub with the hot water you want. It will only heat about 1-2 degrees an hour.

Jan 08, 2011 | Jacuzzi RapidHeat In-Line Heater U395000 [...

1 Answer

How do you know if a heater is compatible with your whirlpool tub?


look at the heater you have. it will say either Pressure Inline Heater or Vacuum Heater. The pressure heater installs after the pump and the vacuum heater will install before the pump in the suction line.

Dec 16, 2010 | Jacuzzi RapidHeat In-Line Heater U395000 [...

1 Answer

Need to heat water up more


I had same problem... fixed by turning hot water tank up to 145 degrees...but PLEASE do not do this if you have young children..that is hot and will burn!.. but does work(did this 8 years ago!)

Mar 15, 2009 | Jacuzzi RapidHeat In-Line Heater U395000 [...

1 Answer

Rapid Heater for Jacuzzi


The light is supposed to be on when the tub is full of water and the pump comes on. Make sure the heater is plugged into a seperate breaker, it cannot be on the same line as the pump.
Look on the heater for a label. If your heater is installed on the discharge side of the pump it should say "pressure heater" on it. If it is installed in front of the pump it should say "Vacuum Heater" on it.
Once installed, fill the tub with water and turn the pump on. If it is installed in the correct position the light will come on when the pump turns on.

Feb 22, 2009 | Jacuzzi RapidHeat In-Line Heater U395000 [...

1 Answer

Rapid Heat Bath Heater - indicator light on but not heating water


Bathtub heaters will not produce the heat out a the jets like you would feel coming out of a return jet in a swimming pool.
Bathtub heaters will ONLY maintain whatever temperature water you put in there. they only heat 1-2 degrees an hour. that is for a 1500 watt heater. Many heaters today are only 650 watt or perhaps 700 watt.

Feb 21, 2009 | Jacuzzi RapidHeat In-Line Heater U395000 [...

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