Bubble covers

Old 11-01-17, 05:03 PM
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Question Bubble covers

Are those blue bubble covers you lay on the water effective in helping to hold in the heat? We got our new hot tub last year and so far haven't bought one. We also keep our hard cover on all of the time.
Old 11-01-17, 06:44 PM
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The hard cover with the 3" foam? If so, that's really all you need. The bubble covers are great if you don't have an insulated top. My parents had one on a pool and it extended the season several weeks at least. It was nice because it allowed sunlight through to warm the water, but kept evaporation and heat loss down.
Old 11-01-17, 08:41 PM
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The bubble covers are great to transfer the suns heat into pool water. I don't think they should be used on a spa as they will allow more heat out than in. Using an insulated foam cover would be more effective.
Old 11-02-17, 05:19 AM
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If you already have a rigid cover I would not bother with a bubble cover. It's kinda big and a wet mess to store when you want to use the spa. And, the bubble cover has very little R value compared to a rigid cover that's several inches thick. If your spa was a poured concrete or gunnite without a cover then the bubble cover would help a lot. It will help with heat retention but it's biggest benefit would be to limit evaporation.
Old 11-02-17, 03:34 PM
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Yea, the hard cover is 4" tapering down to 3". (foam) We used a bubble and hard cover with our last hot tub. It lasted for 22 years. We went through several bubble covers.
Old 11-03-17, 12:14 AM
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If you are referring to the covers that look like bubble wrap save your money they are useless. I have tried them, invest in a good solid cover!

If you are in a cold weather area,. like we are, the 6" covers are worth the extra cost to keep in more heat.

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