UCEDER Hot Tub LX H20-Rs1 Thermostat 110V 2kw with Adjustable Temperature Thermostat for Some hot tubs,Underground Small Pool &Bathtub（Suggest Connect 20A Adapter or Breaker
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Saturday, Dec 20
Recently Viewed
Size: H20-RS1 110V 2KW
Features
- Requires a 20A circuit(Connect 20A adapter or breaker),with 1.5" outlet , min 0.35MPA pressure,suggest work with at least 0.25HP,suitable small bathtub & spa tub /hot tub 2 KW /110V-120V.No plug, just 3 cables,Black Cable is Live,White Cable is Neutral,Green Cable is Grounded.
- We suggest water capacity not more than 400 US gallon,the heater won't work if it exceeds the standard, see the picture 2.
- We suggest the pump not less than 200 wat (3600 L/ h), small pump will cause the heater cannot work,see the picture 3.
- Make sure the mount direction is correct,arrow direction is the water flow direction,wrong direction will not make the heater work. see the picture 4.
- A quick method for detecting heating pipe damage,see the picture 5.
- When the heater doesn't work,use a multimeter to test the 4 points to determine which component is damaged,see the picture 6.
- If have any issues with heater,please take some photo of the using environment,including installation direction,set temperature,pump and water capacity,we will help you troubleshoot.
Product Dimensions: 7 x 7 x 8 inches
Item Weight: 3 pounds
Manufacturer: pool spa part
Item model number: 159l
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Dec 20
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I bought this for my 8' stock tank pool to make it a hot tub during the winter. I read other mixed reviews that had also bought it for converting a stock tank pool to a hot tub. I gave it a try because I didn't want to setup a propane instant hot water tank setup. It did take a couple trips to the local hardware store to get all the proper fittings but I got it all connected and up and running. I did run into the same problem at first of the heater not kicking on so I tried taking the top cover off like others said they did and I tricked the switch to be on. Also I did have to plug it into a 20 amp plug. While I was trying different things, I had changed the filter on the Intex 1500 filter pump and noticed the flow switch was working like it should so I put it back together with no modifications and it works great, I just change the filter every 2 to 3 weeks and have no issues. I did also buy a Bayite temperature controller plug and plugged the filter pump into it on the heat plug and have the temp set to turn off at 100° and have it kick back on at 98°. I did have to change the plug on the Intex filter pump to a non GFI plug because every time the temperature control plug shut off when it reached 100° the GFI plug on the pump would pop off. I have had no issues in 2 months now and am loving it. It did take a few days to get up to temp, I live in the foothills of California and the temp here recently has been in the high 50's to low 60's during the day and mid to high 30's overnight and it keeps it to temp with no problems. I have a blue bubble cover and a black 8' pool cover on it to help keep in the heat.
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Reviewed in the United States on November 29, 2022 by Nicole
UPDATE: It turns out that these heaters all have a poorly designed thermostat that burns out due to combination of corrosion and heat. I've since modified both of the units I purchased to utilize an external theromostat device and now they both function without issue. Original Review: It worked really well and heated my 300gal hot tub quickly and maintained temperature even during some very cold days. Last week it stopped heating the tub. I thought maybe it wasn't getting enough flow so I replaced my filter (it was still relatively new and not clogged) but still wouldn't work. Today I bypassed the paddle switch that detects flow, no change in wattage (item was pulling 0 wattage). Multimeter tested all circuitry... no tripped internal breaker, the dial had a good ohm range, continuity throughout all wires.... tested heater element, no continuity or resistance.... The heater elements burned out... only a month after buying it. Not happy!
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Reviewed in the United States on June 19, 2021 by Gregory Taylor
This thing is great but it’s not made for small pools so you’ll need to be crafty. I have mine connected to a 10x30 pool and is heated to 84-88 degrees. First it’s meant to be hardwired for 20amps but I put a 15amp plug on it which is plugged in to a 15amp GFCI outlet and have not had any power issues. Make sure to put the white wire on the proper side. Examine your outlet if you need to. Next, the PVC couplings, be prepared to spend time finding the parts to connect your pool hoses but it can be done relatively cheap at your hardware store. Also, metal o-ring clamps will help a lot to eliminate any leaks. I upgraded to a stronger pump filter, it’s still not quite enough to trigger the flow lever. Others have added a metal washer to create a bit more surface area but I decided to super glue a lego brick under it which means I have to be very careful and ensure it’s only plugged in when the pump is running otherwise it will pop the heater’s hot circuit (under the little screw cap) and potentially break the unit. This is how I broke my first unit. The most important concept to consider is the relationship between heating your pool and water flow. As water is flowing through, the water is picking up a little bit of heat from the coils each time and then going back in the pool and sharing that little bit of heat with the rest of the pool. The little pump will not move the water fast enough to warm the pool. I upgraded to the 1500 gph and to 1.5” hoses using hose adapters. You also should start with warm water otherwise it’s 2-3 days of running 24 hours to get the pool warm. After it’s warm it needs about 6-8 hours a day to keep it warm and surprisingly I didn’t see a huge difference in my power bill. Last connect to output of the filter pump; after the water has been filtered. No need to get leaves and dirt stuck on the heating element. Good luck.
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Reviewed in the United States on July 11, 2020 by Jay Jay