TLDR Review: Frost King Water Heater Insulation Blanket
Pros
- •The design and quality have stayed consistent for 30 years, proving it’s a reliable choice.
- •Vinyl covering is durable and effective at protecting the insulation.
- •Flexible enough to compress and shape into sharp edges, making installation in tight spaces easier.
- •Versatile use beyond just water heaters, such as insulating whole house fans or wrapping pipes.
- •Provides strong insulation, significantly reducing heat loss and improving water heater efficiency.
- •Fits Rheem and similarly sized water heaters well, including larger 6allon models.
- •Comes with very sticky vinyl tape to help secure seams, though additional tape may be needed.
- •Overall good quality material that holds up well once installed.
Cons
- •The fiberglass insulation is fragile and itchy, releasing irritating particles that stick to skin, hair, and surfaces; wearing full protective gear (gloves, mask, long sleeves) is a must.
- •Fiberglass edges break down quickly and the foil covering can rip easily if not handled carefully.
- •Tape included may run out before finishing seams, requiring you to buy extra HVAC foil tape or duct tape.
- •No detailed instructions included; beginners benefit from watching tutorial videos before installation.
- •Installation can be tricky around water heater controls and pipes, and is easier with two people.
- •The blanket arrives folded and compressed, requiring slow careful unrolling to avoid damage or excessive fiberglass dust.
- •Doesn’t include duct tape which many users consider necessary to get a secure fit.
Bottom Line
If you want a no-nonsense, proven insulation blanket with solid performance and versatility, the Frost King SP60 delivers well—especially for standard and larger water heaters like Rheem models. Just be ready to suit up with protective gear and stock up on extra tape, as the fiberglass can be frustratingly itchy and the supplied vinyl tape isn’t always enough. For those who want slightly easier handling or fewer fiberglass dust issues, considering alternative insulation types might be worth it, but if you want dependable R10 insulation at a fair price, this is a classic choice.
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