Thermowell Thru-Wall Spa Drywell

Thermowell Thru-Wall Spa Drywell
Thermowell Thru-Wall Spa Drywell
Thermowell Thru-Wall Spa Drywell

Thermowell Thru-Wall Spa Drywell

Regular price $12.95
  • Low stock - 10 items left
  • Inventory on the way
Ships next business day.

Mini Thermowell Assembly is a high quality through-wall spa drywell for accurate thermostat temperature control.

  • Drywell (3/8" ID)
  • Nut
  • Wall gasket
  • Rubber split bulb bushing

Product notes: Accepts 5/16" to 3/8" diameter probe. 1-1/8" mounting hole. For accurate sensing, locate dry well at average depth, midway between waterline and bottom of footwell.

400-4427, 09-0044B

Customer Reviews

Based on 7 reviews
I would definitely buy this item again if needed.

The Hot Tub Drywell Sensor Mount that I purchased works great, was easy to install and cost me a reasonable amount to purchase. SpaDepot delivered the item promptly and at a good price. I am very pleased.

cactus jim
Fits perfectly. no leaks ,

Great service , fast shipping , right price!!!!

David Schoss

I couldn't find a thru wall housing for a 1/4"" Sensor that I was sent with a new controller. I finally called your tech support. They steared me to this one. It came in a timely. Shipping was a flat rate that wasn't outrageous. Everything worked well. I did have to make the hole in the tub bigger. They tell you that in the instructions. People are siliconing every thing. No need for that. It is a dry well so water isn't getting inside of it. It comes with a gasket. Just have to make sure you put it on the water side. Put it in there. Tighten it up. Then put your sensor in. Simple as that. I don't think I'll ever do any controller that doesn't have a sensor in the tub vessel. to much variance between the readout & the actual water temperature

Tight fit

First, was unable to insert sensor into well. Was able to drill out without ruining sides, so turned out fine.

Jim the runner


Just what I needed, arrived quickly

It for the dimensions very snug as you would want it to. Very easy to figure out, apply sealant, and set. After it dried I measured probe. It was hard to get in because it needs to be to help completely seal. You do not want it to leak. I used a small smear of olive oil it went in, then put sealant on. It didnt leak.

Great service from Spa Depot.

First Thermowell was not correct size and the promptly sent me a replacement. Great people to work with and their service is fast.