Qty:1
Thermwell SP57/11C Water ... has been added to your Cart
Include

1-Year Power & Hand Tools Extended Protection Plan

from Asurion, LLC

  • Delivered by e-mail, register and file claims online or by phone
  • Coverage includes free replacement after manufacturer's warranty expires, with no deductibles
  • Easy reimbursement via Amazon.com gift card in as little as 24 hours (see details)
  • Coverage includes free shipping
  • Fully transferable with gifts, cancel anytime, full refund in the first 30 days

Other Sellers on Amazon
Add to Cart
$16.99
+ $8.11 shipping
Sold by: toolboxsupply
Add to Cart
$25.90
+ Free Shipping
Sold by: ShopChanute
Add to Cart
$27.10
+ Free Shipping
Sold by: BIC Warehouse
Have one to sell? Sell on Amazon

Thermwell SP57/11C Water Heater Blankets

3.7 out of 5 stars 91 customer reviews
| 6 answered questions

List Price: $25.99
Price: $25.41 & FREE Shipping on orders over $35. Details
You Save: $0.58 (2%)
In Stock.
Ships from and sold by Amazon.com.
  • Enter your model number above to make sure this fits.
  • 3.5-inch-by-48-Inches-by 75-inches
  • Reflective value is 10
  • Double sided foil and fiberglass
See more product details
24 new from $16.44

A Full Selection of Hydraulic, Pneumatic & Plumbing Products
pipe fittings
Pipe Fittings
seals
Seals
hydraulic valves
Hydraulic Valves
flow control and filtration products
Shop all
$25.41 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Thermwell SP57/11C Water Heater Blankets
  • +
  • Scotch Aluminum Foil Tape 3311 Silver, 2 in x 10 yd 3.6 mil (Pack of 1)
Total price: $31.94
Buy the selected items together

Special Offers and Product Promotions

  • Working on a home project? Need some help? Check out Amazon Home Services and get a $20 Amazon Gift Card when you book your first service. Learn more


Product Description

Product Description

Thermwell SP57/11C Water Heater Blanket. Fits up to 60-gallon water heater. 3-Inch tall by 48-inch wide by 75-inch tall

From the Manufacturer

The Frost King SP57/11C Water heater Insultion Blanket is fibergalss and foil on both sides for supreme insulation and fits most gas, oil or electric water heaters. Includes foiltape for easy installation. The reflective value is rated at 10.

Product Information

Technical Details

Part Number SP57-11C
Item Weight 5.5 pounds
Product Dimensions 10 x 10 x 25 inches
Item model number SP57/11C
Item Package Quantity 1
Batteries Required? No

Additional Information

ASIN B000BPCWQY
Customer Reviews
3.7 out of 5 stars 91 customer reviews

3.7 out of 5 stars
Best Sellers Rank #26,766 in Home Improvements (See top 100)
#36 in Home Improvement > Rough Plumbing > Water Heaters & Parts > Water Heater Parts
#2,975 in Home Improvement > Appliances > Large Appliance Accessories
Shipping Weight 5.8 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available February 17, 2007

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Reviews

Top Customer Reviews

Verified Purchase
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.
6 Comments 75 of 78 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
I purchased this at Home Depot because I didn't want to wait for it to ship. But with free shipping it would have been the exact same price. Okay, so let me address some "problems" people have raised in their reviews.

1) It does fit just fine. I have a 40 gallon gas hot water heater. Gas hot water heaters have no water in the bottom foot or so of the tank. That's where the burner is. Not only should you not insulate that portion because it won't gain you anything (only insulate where the water is) but you also risk blocking the air intake (very bad idea). A good rule of thumb to find where the bottom of the water is, look for the drain valve. It's installed at the bottom of the water tank. So I installed it with the 48" as the height and the 75" to wrap around. I was left with a good 5-6 inches overlap, so clearly room for a larger tank. Also, you don't want to insulate the top of a gas tank as you risk obstructing air flow into the flue.

2) There is almost enough tape (-half star). I used one long piece to secure the vertical seam (48") and small pieces to secure it at the top. This used all the tape. I'd prefer a few more feet so I could secure it at the bottom (simply to seal in the fiber glass).

3) It's fiberglass, so long pants, long sleeves, gloves, and respirator are a must. When you finish, make sure to shake out your hair, throw clothes in laundry, and take a shower. Don't go walking around your house. I didn't notice a strong smell from it like other fiberglass products.

4) It would be improved by flaps (-half star). Besides one edge, the plastic facing is exactly the same size as the underlying insulation.
Read more ›
Comment 37 of 38 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
I figured that an item that fits "up to 60gal tank" would fit my meager 40gal. In the end, I did manage to get it to fit, but I had to cut it into multiple pieces. The 75" length was taller than my tank, but the 48" width was not enough to get around the circumference (and no, it would not even remotely fit if rotated 90 degrees). I cut off the excess from the height and taped it to the remainder to enhance the width, and with some stretching, managed to get it around my tank. The small amount of tape provided was enough to hold it all together, but not enough to completely cover the seams as indicated in the installation instructions. Also, the R-value probably suffered a bit from compressing the insulation so that it could fit the tank. They could've won a 5-star vote if they'd included a more reasonable size blanket and a sufficient amount of tape.
2 Comments 20 of 20 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
We noticed an immediate difference in the efficiency of our hot water delivery. One water heater is in the garage and the other in the attic, but both deliver a much better, more consistently heated water supply. This is the most cost effective energy saving project we have ever completed.
Comment 14 of 15 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
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.
Comment 27 of 32 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
CONS
- as other reviews this is too small for our boiler, but since our boiler is in the corner right at the two walls, I would not able to wrap it around the whole boiler anyways
- be ready for TONS and TONS of fiberglass dust after you are done everywhere in your garage - close car windows, doors to your house... (make sure to wear special clothes, respiratory mask, hat, glasses and gloves) - not exaggerating - you can argue that we are married with fiberglass these days - true - but even after adding blow-in (AttiCat) insulation to the attic it was not so messy job...
- more tape should be provided, used FlexFix from Nashua to fill the missing feets/meeters of tape needed

PROS
- after applying the insulated part is about 8F (4C) colder than the uninsulated part - so it really works (reason for 3 stars)

OTHER THOUGHTS
- let you wife know what you are up to so she does not feel surprised seing you hugging the boiler in the garage :) :) :)

Have fun!
1 Comment 10 of 12 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Most Recent Customer Reviews

Set up an Amazon Giveaway

Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more
Thermwell SP57/11C Water Heater Blankets
This item: Thermwell SP57/11C Water Heater Blankets
Price: $25.41
Ships from and sold by Amazon.com

Want to discover more products? Check out this page to see more: heater element