Insulate Hot Tub To Save Significant Amount Of Money


It is a well-known fact that hot tubs can waste a lot of energy, both when they are filled and during the filling phase. The heater constantly keeps running to compensate for the heat that has escaped through the pipes and walls.

But, since we all want to save money, there are some things we can do to make the tub lose less heat. In this article, we will show you how to insulate the hot tub. This will save you lots of money, no matter how often you use your spa.

Why Insulate Hot Tub

Adding insulation under the tub will serve as a gap sealer, which will, in turn, hold the heat and significantly decrease its loss. If the heat has nowhere to escape, it means your tub will be hot for longer. Consequently, you will spend less electricity reaching the desired temperature, which will save you a significant amount of money in the long run.

Insulation is also inexpensive, which is another major bonus. In addition to being economic, hot tub insulation is very easy to install. There is no need to call professional service because you can do it on your own in just a few simple steps.

The amount of insulation you need depends on your climate. In case you live in a warmer climate, such as Southern Carolina, you do not need much. On the other hand, if you live in the North, you will typically need more than a few layers.

In case you would like to buy fiberglass insulation, it will come unfaced or faced, which means it comes with a paper backing. You need to be careful if you want to insulate a hot tub with unfaced insulation. It can cause serious itching, so you should always wear gloves as well as long-sleeved shirts.

You could also choose to get rigid hot tub insulation. They provide high R-values and are typically pink boards that are used to line the inside of the tub. On the other hand, you could go with a spray foam product. You will be able to fill every small crack and hole with expanding foam. If you would like to get a natural product, you can search for different options, such as recycled textiles or denim.

Hot Tub Installation Guide

Things you will need:

  • Foam pipe sleeves
  • A screwdriver
  • Cable ties
  • Insulation that comes in layers (layered insulation)
  • Safety glasses

Installation Steps

Open the side of the tub. This part may be protected with gravity clips, which makes it possible to lift the panel and then pull it off. On the other hand, it can be protected with screw clips, which you will need to turn using a screwdriver until you notice they are unlatching.

The next step is wrapping foam pipes around the plumbing pipes of the tub. Bear in mind that the pipes’ inside diameter correlates to the pipes’ outside diameter. In case you are unsure which pipes are hot water pipes, you should fill the tub and turn on the heater. If you feel that a pipe is warm, it means that it is used for hot water.

Coldwater pipes will remain cold no matter if the heater is running. Next, wrap the foam sleeves around the pipes which are used for hot water. Most sleeves come with built-in taped joints that are going to join when they are in place. Always makes sure that the seam of the sleeve faces down. Wrap the foam sleeves so they are sealed with cable ties or metal tape. Also, they should be one foot apart.

You should place the layered hot tub insulation along all tub walls. Always use the insulation of the highest R-value. You can also use standard fiberglass insulation, but you will have to wear safety glasses in this case. Use a utility knife to cut the insulation into pieces, and then place it along with your spa.  The level of insulation protection depends on how many layers you can achieve.

To complete the insulation process, you should get a well-insulated spa cover. Make sure it is placed properly so no extra heat can escape the tub. Also, you can get a special floating tub blanket which can add more insulation.

 If you want to go even further, you can also get a spa cover cap. It will protect the tub cover even further during those long and cold winter nights. If your spa cover is protected and in its place, it means the insulation will do its job and save you lots of money.



Q: Can You Add Insulation to a Hot Tub?


Yes, you can add insulation to a hot tub. You can either choose from fiberglass insulation, rigid insulation, foam insulation, or natural insulation. Adding insulation will trap the heat which is likely to escape, and also protect the heater and pumps during a power outage.

Q: How Do I Insulate My Hot Tub for the Winter?


You should add a protective layer of insulation, either inside the tub or around the hot water pipes. One or two layers is enough if you live in a warm climate. If you live in a colder climate, you should add more layers. You could also add a protective blanket for more protection.

Globo Surf Overview

Hot tubs can spend a lot of energy, especially if they are not properly taken care of. That is why it is important to learn that only one simple trick can save you a significant amount of money. You should add enough layers of insulation to your tub for it to be more energy-efficient.

You can either place the insulation inside the tub or you can wrap the insulation over the pipes. Just make sure you locate the hot water pipes. Also, if you live in a colder climate, add more layers of insulation. To finish it off, place an adequate cover over your spa.

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Globo Surf
My name is David Hamburg. I am an avid water sports fan who enjoys paddle boarding, surfing, scuba diving, and kite surfing. Anything with a board or chance I can get in the water I love! I am such a big fan I decided to start this website to review all my favorite products and some others. Hope you enjoy!