---
product_id: 82520888
title: "SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic"
brand: "smartjacket"
price: "718 zł"
currency: PLN
in_stock: true
reviews_count: 4
category: "Smart Jacket"
url: https://www.desertcart.pl/products/82520888-sj-80-5mm-polyethylene-water-heater-blanket-insulation-fits-20
store_origin: PL
region: Poland
---

# 40% heat loss reduction Non-toxic & fiberglass-free Fits 20-80 gallon tanks SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic

**Brand:** smartjacket
**Price:** 718 zł
**Availability:** ✅ In Stock

## Summary

> ♨️ Wrap it right, save big—your water heater’s new power move!

## Quick Answers

- **What is this?** SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic by smartjacket
- **How much does it cost?** 718 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/82520888-sj-80-5mm-polyethylene-water-heater-blanket-insulation-fits-20)

## Best For

- smartjacket enthusiasts

## Why This Product

- Trusted smartjacket brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Friendly & Safe:** Non-toxic polyethylene insulation with zero fiberglass—protect your home and the planet.
- • **Slash Your Energy Bills:** Cut water heater ON time by up to 29%, saving nearly $90/year on electricity alone.
- • **Pro-Grade Thermal Shield:** 5mm thickness with R-value 7.1 slashes heat loss by 40%, keeping water hotter longer.
- • **Smart Installation Design:** Innovative air gap system maximizes insulation efficiency—don’t miss out on full savings!
- • **Universal Fit, Effortless Upgrade:** Designed to snugly fit all 20-80 gallon gas or electric tanks with easy installation.

## Overview

The SJ-80 Water Heater Blanket is a 5mm thick, Energy Star certified polyethylene insulation wrap that fits 20-80 gallon tanks. It reduces heat loss by 40%, boasts an R-value of 7.1, and is non-toxic with no fiberglass. Easy to install with a unique air gap design, it delivers up to 29% energy savings, helping you cut costs and carbon footprint while enhancing home comfort.

## Description

SmartJacket SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic - Insulation Hot Water Heater - desertcart.com

Review: Great buy - Fits great. My heater has the controls on the front side and an overflow unit on top, so I had to do some creative patching, but it looks fine. There were more than enough product and tape for my 50-gallon heater. Hopefully this will help in this cold snap. There are adhesive strips on the cover, and it also includes metal tape. It was very easy to install, looks to be of good quality and a decent thickness.
Review: Saves a lot of money but takes a lot of time - I have my water heater on a timer that has some strict requirements that I can measure. It has to come up to 140 F. Then stay hot enough to get through a shower late at night and run almost entirely out of hot water after the shower. To meet these goals required 54 total minutes of ON time with no insulation on the water heater at all. I only have a 30 gallon tank so I nearly wrapped the outside twice, plus the top once. The timer now requires 38 minutes of ON time to hit the same objectives. That's a 16 minute savings for a 3800 watt heater per day. I pay 24 cents per kw, so it saved 16/60H X 3.800Kw X 365 X $0. 24/KwH = $88.76 saved per year. 16/54=29% saved The downside was hours of installation, as my heater is in a confined cabinet, and it also takes time to cut openings for the electrical panels and then retape them. Because of the confined space, all in it took about 5 hours. However, my water heater is inside my living space, I live in a hot climate year round, and all of the lost heat has to be cooled. The kitchen in which my water heater is located is about one degree colder when the air conditioning is held constant. The reduction in cooling savings is probably an additional $90 per year. So $180 per year for a 30 gallon tank is pretty significant. Note that most of these commenters installed it incorrectly. This isn't a "blanket", it requires an air gap between the water heater and this wrap. The product comes with slits that allow you to fold it back twice in one direction and two sets of double sided tape on either two edges (for the bottom piece you HAVE to install first) or one edge that becomes the TOP of the upper piece that you must install over the bottom piece. Before you install it, remove just the OUTER paper backing of one entire edge. Now fold the outer part back and then fold it back again, tucking it underneath itself. The net result is the second paper backing is now on the edge, and the edge is raised to provide the proper air gap. Do this with the other outer edge if there is paper backing. Now it is ready to install by removing what used to be the inner paper backing and apply the edges snugly to the water heater, leaving an air gap between the material between the raised outer edges and the water heater. The air gap provides about 90% of the insulating capability of the product. Ignoring this will mean losing 90% of the savings. Next install the other pieces the same way with the smaller top piece only having one raised outer edge to allow you to install that raised outer edge on top, with the bottom being installed over the raised outer edge of the piece you installed previously below it. Next tape everything, and not with the included tape. The included tape is worthless, you'll need to buy your own aluminum tape. Taping everything after I taped the top down actually generated about 1/5 of the savings I outlined above, as I did not initially tape everything as it seemed snug. Then later I taped everything and was able to reduce the timer settings further.

## Features

- Save Money, Energy and Help the Environment!!! SAVE 2x MORE WITH OUR PRODUCT!!! 5MM THICKNESS!!!
- R-VALUE 7.1!!! Reduce Heat Loss by 40% !!! Recover Your Investment in a few month!!!
- Fits All 20 to 80 Gallon Tanks / Fits Gas or Electric Water Heater
- Easy to Install and Easy to Clean , Contains no Fiberglass, Non toxic / Non carcinogenic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0041871AY |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #41,388 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #97 in Water Heaters & Parts |
| Coverage | 20 to 80 gallons |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,195) |
| Date First Available | August 28, 2010 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 2.13 pounds |
| Item model number | SJ-80 |
| Manufacturer | IMP |
| Part Number | SJ-80 |
| Product Dimensions | 84 x 24 x 0.04 inches |
| Size | up to 80 Gallons |
| UPC | 793573761507 |

## Product Details

- **Brand:** SmartJacket
- **Item Thickness:** 5 Millimeters
- **Material:** Polyethylene (PE)
- **Product Dimensions:** 84"L x 24"W
- **Recommended Uses For Product:** insulating water heaters

## Images

![SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic - Image 1](https://m.media-amazon.com/images/I/61omtcLz1jL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great buy
*by D***E on January 29, 2026*

Fits great. My heater has the controls on the front side and an overflow unit on top, so I had to do some creative patching, but it looks fine. There were more than enough product and tape for my 50-gallon heater. Hopefully this will help in this cold snap. There are adhesive strips on the cover, and it also includes metal tape. It was very easy to install, looks to be of good quality and a decent thickness.

### ⭐⭐⭐⭐⭐ Saves a lot of money but takes a lot of time
*by C***. on August 26, 2025*

I have my water heater on a timer that has some strict requirements that I can measure. It has to come up to 140 F. Then stay hot enough to get through a shower late at night and run almost entirely out of hot water after the shower. To meet these goals required 54 total minutes of ON time with no insulation on the water heater at all. I only have a 30 gallon tank so I nearly wrapped the outside twice, plus the top once. The timer now requires 38 minutes of ON time to hit the same objectives. That's a 16 minute savings for a 3800 watt heater per day. I pay 24 cents per kw, so it saved 16/60H X 3.800Kw X 365 X $0. 24/KwH = $88.76 saved per year. 16/54=29% saved The downside was hours of installation, as my heater is in a confined cabinet, and it also takes time to cut openings for the electrical panels and then retape them. Because of the confined space, all in it took about 5 hours. However, my water heater is inside my living space, I live in a hot climate year round, and all of the lost heat has to be cooled. The kitchen in which my water heater is located is about one degree colder when the air conditioning is held constant. The reduction in cooling savings is probably an additional $90 per year. So $180 per year for a 30 gallon tank is pretty significant. Note that most of these commenters installed it incorrectly. This isn't a "blanket", it requires an air gap between the water heater and this wrap. The product comes with slits that allow you to fold it back twice in one direction and two sets of double sided tape on either two edges (for the bottom piece you HAVE to install first) or one edge that becomes the TOP of the upper piece that you must install over the bottom piece. Before you install it, remove just the OUTER paper backing of one entire edge. Now fold the outer part back and then fold it back again, tucking it underneath itself. The net result is the second paper backing is now on the edge, and the edge is raised to provide the proper air gap. Do this with the other outer edge if there is paper backing. Now it is ready to install by removing what used to be the inner paper backing and apply the edges snugly to the water heater, leaving an air gap between the material between the raised outer edges and the water heater. The air gap provides about 90% of the insulating capability of the product. Ignoring this will mean losing 90% of the savings. Next install the other pieces the same way with the smaller top piece only having one raised outer edge to allow you to install that raised outer edge on top, with the bottom being installed over the raised outer edge of the piece you installed previously below it. Next tape everything, and not with the included tape. The included tape is worthless, you'll need to buy your own aluminum tape. Taping everything after I taped the top down actually generated about 1/5 of the savings I outlined above, as I did not initially tape everything as it seemed snug. Then later I taped everything and was able to reduce the timer settings further.

### ⭐⭐⭐⭐ Fairly easy to install and fit my extra large 40 gallon water heater with plenty of room to spare. Hopeful on the cost savings.
*by B***C on November 3, 2014*

Just installed the blanket so cannot yet speak to any improved effeciency or cost savings but it was fairly easy to install and plenty of material was provided in order to fit my 40 gallon water heater (I found that it is an extra large 40 gallon and other blankets were not sufficient). The self adhesive tape on the insulation panels was the only problem I encountered. My water heater is in a small closet in my garage so getting the insulation around the heater was a bit of a challenge (which I expected) but trying to get the tape backing peeled off was very challenging as it kept tearing off. I finally just gave up on the self adhesive tape and as long as it stayed in place I didn't worry about it too much. I use all of the aluminum foil tape to ensure it stayed in place and am pretty confident it will. The insulation was easy to cut but it was also easy to rip as it was not really durable so some caution is advised. Overall, I was able to install it by myself with minimal effort (took about 30 minutes, which included cutting the pieces to fit and taping the snot out of it to ensure it stayed in place. Now I am just waiting to see if the money and effort was worth it in my gas bill.

## Frequently Bought Together

- Water Heater Blanket Insulation, "NON FIBERGLASS", Fits up to 80 Gallons, Energy Star Certified, Satisfaction Guaranteed
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- Duct Tape Heavy Duty Waterproof, Premium Aluminum Foil Tape (2"*65Feet,3.9mil), Silver Metal Ducting Tapes, High Temperature, Dryer Vent Insulation Tape for Ductwork, Sealing, Patching, Furnace, HVAC

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-15*