Mxmoonant Hot Tub Thermostat, 2KW 110V Spa Bathtub Heater Thermostat with Temperature Control for 400 Gals Hot Tub, Whirlpool Bathtub, Spa, Small Pool (No Plug)

Awful, rusted out within a week and a half. Never really heated well, but we were using it for a small above ground pool. Shouldn't rust out from the inside anyway.

I bought a whirlpool tub several years ago and installed it in my den (i.e. my getaway) bathroom. It's a great tub but the problem with it is the water cools down too fast. Sitting in it for any period of time any longer than what a bath would normally take allows the water to become uncomfortably cold. You can't really enjoy the benefits of the whirlpool features. You can keep adding hot water, but that gets old. When I saw this great hot tub heater by Mxmoonant, I was instantly excited to get it installed ASAP! It turns out that the tub plumbing has a little section that is removable in order to insert an in-line heater! Who knew? What a difference a little circulating heat will do. Now there is no need to hurry out of the tub because it's getting too cold. Now all I have to worry about is my fingertips getting waterlogged! Well made, quality heater. I recommend it!Review for: Mxmoonant Hot Tub Thermostat, 2KW 110V Spa Bathtub Heater Thermostat with Temperature Control for 400 Gals Hot Tub, Whirlpool Bathtub, Spa, Small Pool (No Plug)

I actually have this working on an extension cord using a very heavy duty extension cord plugged into a 20amp breaker. Its hard to tell if this thing is running or not so i wish there was a status light when the heater was actually running. I have one of those inflatable Intex hot tubs and the internal heater died so i replaced it with this combined with the "VEVOR Swimming Pool Pump 1/2 HP 110V pump" suggested. I must warn you the Vevor pump does not come with useable connectors for US sized PVC pipe so you need to also get "Waterway Plastics 2 Pack of 400-4060" I have yet to confirm these fit my vevor pump however someone in its reviews already did. i ordered a set of "Waterway Plastics 2 Pack of 400-4060" to rebuild my water supply and outlet pipes. I can confirm that the large threaded connectors on this heater and the Vevor pump suggested are the same thread however the adapters that came with the Vevor pump did not fit US PVC pipe.. I had to epoxy an adapter into them which worked but i am getting a lot of cavitation since this pump is way overpowered for this setup. I am redoing the water supply and outlet pipes to reduce restrictions. also i may add a speed controller to the pump to slow it down a bit. My little hot tub was at 110F degrees this morning!!! If you plan to modify your inflatable hot tub it is not super easy but very doable.

Cheap Thermostat does not last as others have said But I wanted to try as it had the Safety Features I wanted and ease of Installation...lasted about 3 Months and the Thermostat went out replaced with a better one only to have the Flow Switch burn out....Today I orderedSpaGuts 25-150-0002 Universal Inline Bath Heater Kit, 1.5KW, 110V, 7x1.5 inches, with Built-in Vacuum SwitchLooks better built and hopefully will have Luck with this one!!

Paired this with a 3000gph sand filter pump to heat our small (~1600 gallon) pool.Obviously, this is not designed to heat that much water to spa heat levels... but I accidentally left it on one day and overnight and the water was uncomfortably hot for a swimming pool (but not hot enough for a spa :D).It works very well for our use. Takes about 4~5hours of running it during a sunnier day to get our pool to a comfortable level of heat. Should have absolutely no problem heating a spa.Recommended.

Product worked as should for little over a month, then started leaking water from where the electrical cord entered. It tripped the ground fault breaker. Could not find any means of contacting company. Amazon was helpful with h a credit since it was past the return window.

Great replacement part and easy to change. Works great and it is at a reasonable price.

I was ordering a heater on the Amazon site and a Ventor pump was recommended for a circulation pump I had to wait for it but it does not 1 1/2" PVC how frustrating!