Model # SP57/11C

Internet #100139225

Store SKU #417920

Store SO SKU #923710

null Fiberglass Water Heater Insulation Blanket
0077578023946

Fiberglass Water Heater Insulation Blanket

  • For use with both gas and electric water heaters
  • Reduces water heater recovery time to save energy
  • Durable fiberglass body with R-10 insul.,Fits up to 60-gal tank
$21.57 / each
If you buy 3 or more
$19.41 / each
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Frequently Bought Together

Product Overview

  • For use with both gas and electric water heaters
  • Reduces water heater recovery time to save energy
  • Durable fiberglass body with R-10 insul.,Fits up to 60-gal tank
The Thermwell Products Co. Inc. Fiberglass Water Heater Insulation Blanket fits up to a 60-gal. tank. It is compatible with both gas and electric water heaters. This blanket helps you save energy by reducing your water heater's recovery time.
  • For use with both gas and electric water heaters
  • Fits up to a 60-gal. tank
  • Insulates a water heater
  • Reduces water heater recovery time to save energy
  • Durable fiberglass body with R-10 insulation

Product Overview

  • For use with both gas and electric water heaters
  • Reduces water heater recovery time to save energy
  • Durable fiberglass body with R-10 insul.,Fits up to 60-gal tank
Model #: SP57/11C
Sku #: 417920
Internet #: 100139225

The Thermwell Products Co. Inc. Fiberglass Water Heater Insulation Blanket fits up to a 60-gal. tank. It is compatible with both gas and electric water heaters. This blanket helps you save energy by reducing your water heater's recovery time.

  • For use with both gas and electric water heaters
  • Fits up to a 60-gal. tank
  • Insulates a water heater
  • Reduces water heater recovery time to save energy
  • Durable fiberglass body with R-10 insulation

Specifications

Dimensions

Product Depth (in.)
3
Product Height (in.)
48
Product Width (in.)
75

Details

Finish Family
White
Material
Fiberglass/Vinyl
Product Type
Blanket/Jacket
Product Weight (lb.)
4.95lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
180 days

Specifications

Dimensions

Product Depth (in.)
3
Product Height (in.)
48
Product Width (in.)
75

Details

Finish Family
White
Material
Fiberglass/Vinyl
Product Type
Blanket/Jacket
Product Weight (lb.)
4.95lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
180 days

Questions & Answers

What's the r rating on the water heater blankets?

Asked by: janb
So this is very confusing. The Frost King SP57/11C comes in BOTH R=11 and R=10 varieties. Mind blowing. Same model number SP57/11C, different R-value. If you search online you can find different versions of the packages. The R=11 variety is 3.5 inches thick vs 3 inches for the R=10, at least as I've seen it. I've found both versions at Home Depot at the same time. I think the R=10 is more common.
Answered by: Chucks
Date published: 2017-02-14

why not just buy bag of r-13 insulation and cut it in pieces and tape it to fit around any water heater.

Asked by: thinker
I suppose you could but buy some extra tape. Results might not be as neat.
Answered by: Jimmy
Date published: 2017-01-24

Can I use the silver duct tape to tape the insulation?

I bought this blanket at Home Depot, and it doesn't contain the tape that was supposed to come with the kit. Someone must've bought it and then returned it. Anyway, since this was the only one left in the store, instead of returning the item, can I use the silver duct tape to tape it together? Will there be any safety issues?
Asked by: KT
I did use some extra duct tape to complete installation.
Answered by: Jimmy
Date published: 2017-01-24

my water heater is a 40 gal. and I am having a hardtime finding a blanket to fit. do you carry a blanket at least 70 to 72 in. ?

i have a 40 gallon water heater. will this blanket fit?
Asked by: klite
I just used this on my 40 gallon tank and it fit without a problem.
Answered by: Neuf350Z
Date published: 2015-09-20
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Customer Reviews

Fiberglass Water Heater Insulation Blanket is rated 3.3 out of 5 by 90.
Rated 1 out of 5 by from Just put this thing on and regret it. I am not opposed to using fiberglass in areas of low or no ... Just put this thing on and regret it. I am not opposed to using fiberglass in areas of low or no traffic such as attics, inside walls, ceilings or floors. In an area such as a basement or utility room, I would not want my children or pets in the vicinity of fiberglass particles. This water heater blanket has exposed fiberglass on all edges. True, you can tape them-up- if you buy extra insulation tape. During installation however, fiberglass fibers will be released in the air and end up who knows where. I could see them flying around when I looked up at the light. No where on the package does it state (for the lay person) to use breathing protection. Only in the "how to" video is that referenced. I wish I would have known of the water heater blanket made from denim prior to purchasing this one, but it is not offered for sale in the brick and mortar stores for some odd reason. It is less than $10 more than the fiberglass option and without the potential worry of harming anyone's lungs or skin. The R-value of the denim blanket is lower, but you could save time and money by forgoing the dust mask, gloves, and coveralls in favor of the denim option. It makes no sense for me to remove the fiberglass blanket now, as I would just throw around more fiberglass. So it will stay there, sealed up a much as possible, until I am forced to remove it for some reason; like a home inspector wanting the specs, or the water heater needing some service. I will order the denim version next time.
Date published: 2017-08-07
Rated 2 out of 5 by from Too small for a 50 Gallon water heater with a circumference of 65 inches. You would think this b... Too small for a 50 Gallon water heater with a circumference of 65 inches. You would think this blanket with a length of 75 inches would do it, but no. It's about 10 inches too short. For a 50 gallon water heater with a circumference of 65 inches you need a blanket that is at least 85 inches long.
Date published: 2016-12-08
Rated 2 out of 5 by from Skimpy This product, while useful in containing some heat loss, is not as advertised or pictured. 1. There were no tabs to affix top as indicated 2. 48" depth isn't enough- barely the length to thermo box, leaving a good 12-18" to the bottom of unit 3. 75" width is just enough for my 40 gallon heater. A 400 lb. gorilla may be required to wrap a 60 gallon heater. 4. As a previous reviewer suggested, a mask and gloves should be worn when handling fiberglass 5. It should be noted that the blanket must be wrapped UNDER the copper relief tube for best fit 6. The print on the directions is too small and difficult to read. 7. Directions are printed on the shrink wrap bag containing the blanket. Use care in cutting the bag to avoid obscuring the directions. 8. The tape included is cheap and difficult to manage. Suggest use of white duck tape.
Date published: 2011-11-01
Rated 3 out of 5 by from Barely Fits around 50 gal water heater Package says fits up to most 60 gal water heaters. It barely fit around my 50 gal. I have an electronic Whirlpool water heater and it kept messing up due to the cold so that is why I bought this. It does serve the purpose of covering up the digital display and keeping it warm. It actually did not completely fit around my water heater. There is probably a 2-3 inch gap where I had to tape it to the water heater all the way down for it to stay. If I would have stretched it probably would have fit, but if you compress insulation it decreases its R-value which defeats the purpose. I also must say that the tape that comes with it works extremely well.
Date published: 2013-12-14
Rated 1 out of 5 by from Waste of money This doe not fit my 50gal tank. It's way too short in height and wrapping around. It's a mess to even bother removing it to return to the store. The outer side of this insulation has a very thin plastic covering which tears easily. The tape is useless. There is no backing on the inner side, it is just bare Fiberglas itchy mess. Don't waste your money.
Date published: 2013-01-26
Rated 3 out of 5 by from It'll do Width & length is barely enough for my 40 gal heater. If you're going to cover even part of the top, you won't be able to cover the entire length as well. Directions say there are tabs on one end to attach the top portion. There were none. Also, should tell the installer to wear gloves and eyewear (fiberglass). MAKE SURE YOU USE THE TAPE INCLUDED IN THE PACKAGE! Duck tape does not hold very well.
Date published: 2011-11-22
Rated 3 out of 5 by from Does not fit stated sizes and messy Horrendous amount of fiberglass "dust". Much more so than any fiberglass insulation I've installed. After installing this my hands and clothing sparkled like they had been sprinkled with glitter. "Tools" needed should include a respirator. Had measured my water heater so I knew what size I was looking for but this certainly won't fit the advertised size...unless "fit" no longer means completely covers. Too soon to tell how much this will save on the heating bills but adding insulation is never a waste in the long run. Might be better off using left over home insulation (with backing) if you have any.
Date published: 2013-12-11
Rated 2 out of 5 by from not great The product is exactly as stated in terms of materials and dimensions; however it does not fit as advertised. First off, do not size the jacket by water heater capacity as the instructions suggest. They say this fits up to 60 gallons, but mine is 50 gallons and this thing didn't even come close to fitting. The height is perfect at 72 inches, but the width (length that wraps around) is way too small. It says to wrap it around and mark where it overlaps - it was over a foot short of even coming together. To know if it will fit your heater, measure the height and circumference of your heater, then compare that to the jacket's actual dimensions. I ended up turning mine the wrong way so that the two ends did overlap a bit when wrapped around. This then left about a foot exposed at the bottom. Better than nothing and I can always get an extra strip to wrap around the bottom later. Make sure you cover every bit of skin when installing these. Definitely where a mask and eye protection (preferably goggles) as the adjustment of this will shed a lot of fibers. If I had to do it again I honestly believe it would be easier to buy a couple rolls of insulation and wrap 3-4 around the heater covering it in sections. That may sound like more work but I believe wrapping one small/manageable sheet around at a time and taping it would be easier than dealing with one huge, awkward-to-handle sheet in a very confined space.
Date published: 2013-01-21
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