Outdoor hot tub insulation at cold temperatures - Spa Natural
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Outdoor hot tub insulation

Outdoor whirlpool insulation 2 | SPA Natural

Outdoor hot tub insulation with heat recovery. Each of our whirlpools is well insulated, because the outdoor whirlpool insulation is a feature that reveals qualitative and sustainable differences between models and brands for you. We deliberately do not use "full foam insulation" according to the outdated principle, but we still offer it if you as a customer insist on it. We will gladly explain the advantages and disadvantages in detail. The heat recovery of the pumps keeps the whirlpool free warm like a thermos flask. So we do it with many models, but there are of course other variants, please read on, so that you have understood the subject of insulation quickly and do not have to devote much further to the subject.

Insulation and energy costs for hot tubs and swim spas

This topic is not about optics, but only about bare numbers, which should be expressed in monetary terms. Since this is unfortunately not worth mentioning, we would just like to tell you that an outdoor hot tub or swim spa unfortunately consumes electricity, no matter which insulation variant was now used. The solution is called air heat pump or heat exchanger if necessary, everything else is unfortunately not proportionally purposeful. Either way, the question is whether you are aiming for winter use, because if not, the big issue of insulation and energy costs is a very small issue for you. You are now certainly a little unsettled and ask yourself why then the big topic and why is just here so much talked, written and told. It is relatively simple and if we have explained it to you also understandable. The heat rises as ever upwards and escapes for the most part over the cover into the open air. Accordingly, one tries to prevent or minimize evaporation, because exclusion is physically impossible. Now we want to improve the insulation around and under the whirlpool, which as a loss area tends to have the lower losses. The problem which exists here now is a completely different one than expected. We could achieve positive effects by using rock wool or glass wool or other materials, but it gets too warm in the spa for the technology and pumps and we run the risk of damaging them. Unfortunately, the savings are not in proportion to the replacement and therefore we do not recommend the use of additional layers of insulation. However, we will be happy to help you demonstrate the outdoor hot tub or swim spa insulation perfectly, or recommend which option would make the most sense for you based on your anticipated usage.

Insulation variants for whirlpools

There are the following models as insulation variants, which are touted and sold as "unbeatable":

  1. Full foam - the spa is sprayed full of foam (PU foam) and the entire interior is a huge chamber with foam.
  2. Partial foaming of 0.2-2.0 cm is applied to the inner shell and double aluminum-flex foil is applied to the outside of the frame, as well as the frame itself as 4-fold insulation.
  3. A thermal insulation board is placed on the frame (instead of the Alu-Flex foil) and the floor is also partially covered with it, mostly green or blue Styrodur boards.
  4. Partial chambers are created by thermal insulation panels inside the spa, the bottom is not taken into account. This creates individual intermediate chambers that do not allow other intermediate chambers to cool when the side panel is opened.

First of all, the nice thing is that we are happy to offer you any of these options and explain them to you personally. The only thing you should know about them is that none of them offers you a really significant advantage, as an energy-saving house might.

The Outdoor Hot Tub and Swim Spa Insulation Story

Usually outdoor hot tub insulation is handled with cheap PU foam. This is a big mistake. If you ever need to get to your hot tub, whether it is to perform maintenance or replace an LED lamp, you can not get to the hot tub. The PU foam is always in the way and makes us and our fitters despair.

In addition, we have developed a better insulation for an outdoor hot tub. We use the onion technique, which is also used by our fellow people in the coldest places in the world. A double layer of insulation on the outside (frame) keeps the waste heat from the equipment inside the hot tub. So, a light layer of insulation on the inside shell will warm it up even more. You could think of it like a permanent fireplace and our hot tub or swim spa is the cooking pot in the bunch. The acrylic with its 4 layers is also heat-permeable from below and stores the heat from above.

Nordic Caps are also high on the list of insulation for hot tubs here. With any outdoor hot tub, heat is known to rise to the top. So if reasonable insulation does not prevail here, we have done everything in vain. With the Nordic Caps with 12cm thick Tempex and high quality synthetic leather with Silk finish, we keep everything exactly where it belongs, in the pool. Each Nordic Cap cover is walkable and provides extra protection for children and animals. You can also attach the Nordic Cap (thermal cover) with integrated clips as a child safety device.

Every outdoor hot tub is equipped with this insulation. Spa Natural stands for sustainability.

If you want another technique, ask us and we will offer it to you!

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