Thermwell SP57-11C Water Heater Blanket Fits Up to 60 gallon Tank

by Thermwell

Product Description

Frost King, 3" x 48" x 75" Vinyl Faced Fiberglass Water Heater Insulation Blanket, R Value 10.0, Fits Up To 60 Gallon Tank, Plastic Tape, For Gas, Oil Or Electric Water Heaters.

Product Details

• Product Dimensions: 19.5 x 20 x 25 inches ; 5 pounds
• Shipping Weight: 5 pounds (View shipping rates and policies)
• ASIN: B000BPCWQY
• Item model number: SP57-11C
• Average Customer Review: 3.3 out of 5 stars  See all reviews (14 customer reviews)
• Amazon Best Sellers Rank: #5,712 in Home Improvement (See Top 100 in Home Improvement)
  • #12 in Home Improvement > Rough Plumbing > Water Heaters & Parts > Water Heaters

Customer Reviews

Most Helpful Customer Reviews

24 of 25 people found the following review helpful:

4.0 out of 5 stars Works well, R-value doubtful, wear gloves, January 19, 2009

By 

Joe Airaudi (Texas) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Thermwell SP57-11C Water Heater Blanket Fits Up to 60 gallon Tank (Misc.)

I got this product through Amazon because my local Home Depots don't sell them here in Austin. The product is just as described, it's basically fiberglass insulation with vinyl on either side. It is NOT sealed together, the way a down blanket is, it's more of a loose sandwich. It's easy to cut with sharp scissors, and you'll need to cut no matter what size water heater you have. Couple of things to note:
- I chose this model because it had the highest R-value (R10) in the description of any blanket/jacket I'd seen. The R-value was mysteriously missing from the product packaging, so now I doubt it was that high. You'd think they would capitalize on being 30% more efficient than the next model..
- I thought, since there is no warning to the contrary, that this was the kind of fiberglass you can handle with your bare hands without getting itchy. It's not, so wear gloves
For the money, I say get one, it can't hurt. Even though my water heater was cool to the touch while on, I can tell it's getting toasty under the blanket.

16 of 18 people found the following review helpful:

5.0 out of 5 stars Great product!, February 8, 2008

By 

John Ehr - See all my reviews
(REAL NAME)   

This review is from: Thermwell SP57-11C Water Heater Blanket Fits Up to 60 gallon Tank (Misc.)

Works great on a 50 gallon tank...installed in last then 15 minutes! Not problem and easy to install. I did 2 of them in about 20 minutes. All you need is a pair of scissors.

34 of 48 people found the following review helpful:

1.0 out of 5 stars Don't buy it!, January 29, 2009

By 

Ashish Shah "Damodar" (NJ) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Thermwell SP57-11C Water Heater Blanket Fits Up to 60 gallon Tank (Misc.)

I purchased this product based on other reviews. Well, this 75" blanket doesn't fit on my 50 gallon heater. I thought I was smart to measure the tank's circumference before ordering it, but I forgot one thing.

The circumference of the tank is 75", and so I thought it would be a perfect fit. Well, it turns-out that the blanket is 3.5" thick and so I forgot to compensate that the blanket's thickness will reduce the overall length as I wrap it around the heater. So now it's 1 foot short and I can't close both of the ends.

Besides looking ugly, it wouldn't be effective in its job to save energy. Now I will have to go look for an insulation piece 1 foot x 4 feet long from Home Depot to cover the silly opening.

It's funny that they're advertising this product for 60 gallons when it doesn't wrap my 50-gallon tank that has 75" circumference. I suggest you measure your tank first and then add at least 12" on top of it to get a total blanket length you need. Good luck!