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Space-Age Material Reflective Water Heater Blanket - R3.5

$3136
  • Compatible with electric, oil, or gas water heaters
  • Designed to insulate the water heater for energy-efficient use
  • Features foil backing for enhanced insulation
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Product Overview

The Thermwell Products Co. Inc. Fiberglass R19 Equivalent Water Heater Blanket helps you save energy by making your gas, oil or electric water heater more efficient. The fiberglass blanket is backed with foil. That enhances insulation to an R19-equivalent level without adding excess bulk to your heater.
  • For use with gas, oil and electric water heaters
  • Fits up to a 60-gal. heater
  • Space-age blanket insulates your water heater for greater efficiency and energy savings
  • Reduces water heater recovery time
  • Durable fiberglass body with R19-equivalent insulation
  • Blanket is backed with foil that enhances insulation without adding excess bulk to your heater
  • Foil tape included
  • Click here to learn more about Eco Options and Energy Efficiency

Additional Resources

From the Manufacturer

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Specifications

Dimensions

Product Depth (in.)1 inProduct Height (in.)75 in
Product Width (in.)48 in

Details

ApplicationAir,Water HeaterCompatible Brand/ModelNo
Finish FamilySilver MetallicFor Use WithElectric Tank,Gas Tank
MaterialFoil & FiberglassPack Size1
Product TypeBlanket/JacketProduct Weight (lb.)3.25 lb
Returnable90-Day

Warranty / Certifications

Manufacturer Warranty90 days

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 3.8
    out of 346 reviews
  • 67%recommend this product
Filter by:
Showing 1-10 of 346 reviews
NOT long enough!
Very easy to install but blanket wasn't long enough to reach around my tank! I have a new 50 gallon Rheem-PROE50M2RH95 electric water heater, measures 70" around. Instructions state the blanket is 75" long, was about 5" short of the ends coming together. I didn't have to trim any off or leave openings for access panels. I'm guessing the 3" thick insulation takes up the needed length. Future productions need to be 80" long! I have 98% of tank covered, guess that's better than nothing.
by
    • Recommended
    Too small for hot water heater
    Product is good but you will need two of them to fit your hot water heater
    by
    • Verified Purchase
    Serious Energy Savings
    Made a great water heater jacket! Was simple to work with. After applying some reflective foil-clad bubble insulation, I fashioned battens (of the same stuff) to create an air gap. The Frost King insulation, then, was applied as the 'outer jacket.' It was light enough to be easily supported, while comprising the air-sealing layer of that composite cross-section. Thus I benefit from the combined R-values of the (1) bubble foil, (2) air gap (substantial!), and (3) the Frost King, itself. I immediately saw a reduction in energy consumption. Even though my water heater tank is a well-insulated (from the factory) heat pump-driven model. Do spend money on good wide tape compatible with the mylar facing. Apply it neatly and thoroughly without creases. I was able the use semi-rigid foam and outline "service ports" in the insulation jacket where it was pre-cut for foreseeable maintenance access; allowing it to be re-sealed and re-used in the future.
    by
      • Recommended
      2 found this review helpful
      Easy to install. Tape was of good quality and adhering to the heaters surface. Minimal cutting. O...
      Easy to install. Tape was of good quality and adhering to the heaters surface. Minimal cutting. Overall The water temperature did get hotter, proving its working.
      by
      • Verified Purchase
      • Recommended
      This is R10. I did have to tape it to the top of the electric water heater cause it kept slipping...
      This is R10. I did have to tape it to the top of the electric water heater cause it kept slipping off. I did it alone but would be easier if two people did it. Used the scrap peices for the top of it.
      by
        • Recommended
        Came with everything needed to install on to the heater. Instructions followed simple and easy. A...
        Came with everything needed to install on to the heater. Instructions followed simple and easy. As instructions state protect yourself with clothing, gloves, and glasses to protect from fiberglass. Even a light mask for the mouth will help. I added a little tape around the openings to protect, trim and help hold it in place. Fifteen / Twenty minute install time.
        by
        • Verified Purchase
        • Recommended
        Installed this on a 40 gallon electric water heater in about 20 minutes. Fit very well. Covered...
        Installed this on a 40 gallon electric water heater in about 20 minutes. Fit very well. Covered entire vertical surface and only overlapped a few inches so I did not trim it at all. Only had to cut a slit at bottom for drain valve. Did not cut out for thermostats. I will do that only when I need to. I can feel the thermostat covers thru the insulation so it should be easy to do if required. Since I did not trim I had nothing for the top. I will do that with rigid foam I have left over from a different project. They claim the insulation is 3" but not after being folded, rolled and vacuum packed. I doubt you get the claimed R10 insulation value but it's better than most others I looked at in competitor's stores around here in South Texas.
        by
          • Recommended
          1 found this review helpful
          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.
          by
            14 found this review helpful
            "Up to" 60 Gallons...if you by the correct model number
            I couldn't help but notice how almost everyone commented on the fact that there wasn't enough material. Pay attention to the model number - SP57-11C. If you go to the Frost King website, you'll see there's another model SP60 which is 90 inches round vs. 75 inches. That's the model that fits up to 60 gallons.
            by
              21 found this review helpful
              Easy install
              Easier to install with a little help from a 2nd person to hold it in place while cutting/taping in place.
              by
              • DIY
              • Recommended
              3 found this review helpful
              Showing 1-10 of 346 reviews