Hot Tub Forum

Original => Hot Tub Forum => Topic started by: donl1150 on July 11, 2013, 10:42:51 pm

Title: Thermal blanket for the winter?
Post by: donl1150 on July 11, 2013, 10:42:51 pm

This newbie just finished up the installation of our very first spa.  We have a HotSpring Vanguard and it is installed inside a screened in porch.  We live in central Minnesota so our summers can get 100 plus degrees and winters might get to minus 40 degrees or so.  (So why DO we live here you ask?........must be the low taxes - WRONG!)

Even though we have just begun enjoying our soaks, I am thinking winter is not far away.  I have not seen many posts about the benefits of a floating closed cell thermal blanket in addition to the regular cover.  Are there things that should be considered other than the obvious savings in energy bills?  (Our electric rates are about .12-.13/kWhr).  Are there any negatives to using them; such as chemical problems, adverse effects to the primary cover, etc?  Are there some manufacturers that are better than others?  Would like to hear comments/advice from others, particularly those in the northern climes.  Thanks

Don

Title: Re: Thermal blanket for the winter?
Post by: Tman122 on July 12, 2013, 08:00:00 am

A floating thermal blanket will help to reduce heat loss in the most crucial area of a hot tub in winter. The cover. 70% of your heat loss will be from the top. And they actual help to reduce the damage your sanitizer has on the underside of your cover.

While they are a pain in the butt to remove and reinstall during your soaks they are worth the cost. Get a foam one versus a bubble one.

Oh and I live in Northern Minnesota.

Title: Re: Thermal blanket for the winter?
Post by: Dr. Spa™ Ret. on July 12, 2013, 09:21:58 am

Some preliminary testing by a "major" spa manufacturer empirically showed that a good floating blanket (1/4" thick at minimum) adds about R-10 when used with a standard cover.

Title: Re: Thermal blanket for the winter?
Post by: vangoghsear on July 12, 2013, 11:02:52 am

Not to say there aren't other nice ones out there, but I happened across these at what I believe may be Dr Spa's website (the same logo as his avatar).  I'm not affiliated, so I thought I would plug it for him.  They look pretty good to me.

I've researched the material and it should work and hold up well with spa water conditions.

http://www.rhtubs.com/covers/floating.htm (http://www.rhtubs.com/covers/floating.htm)

Title: Re: Thermal blanket for the winter?
Post by: TwinCitiesHotSpring on July 12, 2013, 12:13:41 pm

its a Minnesota gathering in here  ;D

Title: Re: Thermal blanket for the winter?
Post by: donl1150 on July 12, 2013, 09:02:55 pm

Are there any issues with it icing up once you take it off to have a winter dip?  I can picture rolling it up, setting it off to the side and then have it freeze solid while you are soaking.  Maybe you just put the 'log' back on the water and it will automatically uncurl?

Title: Re: Thermal blanket for the winter?
Post by: Tman122 on July 12, 2013, 09:08:53 pm

Once you set it in the water it thaws in seconds.