A hot tub is a great way to relax, but it can cost a lot to run if heat is lost from the sides. A hot tub insulation jacket is one of the best ways to prevent that loss, which can save you money on operating costs.
In addition to hot tub insulation jacket your portable hot tub, it is also a good idea to put insulation on the ground underneath the cover. This can help prevent debris such as bugs or yard waste from getting into the water.
The first step in insulating your hot tub is to purchase a thermal blanket. These are typically oversized sheets that you can cut down to size for a customized fit. Some are made specifically for your hot tub but generic versions work just as well. These can be a bit of a pain to install but once they’re on they do a fantastic job of locking in heat and protecting the shell from damage.
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Some manufacturers use a different type of insulating method, known as perimeter foam, which covers the cabinet of your hot tub rather than the shell itself. This allows waste heat from the heater and pumps to be trapped while still allowing plumbing to be exposed for easier repairs. This option tends to be more expensive than a standard foam insulation but is well worth the investment for long term savings.
Another recent innovation in hot tub insulation is FiberCor, which is a wool-like non-hazardous material that fills all the voids in your cabinet for a more efficient and less leaky insulation. This is the insulation used by Hot Spring and offers superior insulating capabilities over spray in foam.