--- product_id: 51933488 title: "FE650-40 Watt Fermentation Heater" brand: "fermwrap" price: "₹ 7032" currency: INR in_stock: true reviews_count: 8 category: "Ferm Wrap" url: https://www.desertcart.in/products/51933488-fe650-40-watt-fermentation-heater store_origin: IN region: India --- # 115V Input 0.25 lbs Weight 40W Power FE650-40 Watt Fermentation Heater **Brand:** fermwrap **Price:** ₹ 7032 **Availability:** ✅ In Stock ## Summary > 🔥 Keep Your Yeast Cozy This Winter! ## Quick Answers - **What is this?** FE650-40 Watt Fermentation Heater by fermwrap - **How much does it cost?** ₹ 7032 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/51933488-fe650-40-watt-fermentation-heater) ## Best For - fermwrap enthusiasts ## Why This Product - Trusted fermwrap brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Perfect Pairing:** Compatible with temperature controllers for precise brewing. - • **Clear Visibility:** Transparent design lets you monitor your fermentation process. - • **Lightweight & Portable:** Weighs just 0.25 lbs for easy setup anywhere. - • **Energy Efficient Design:** Only 40 watts to keep your fermentation on point. - • **Stay Warm, Ferment Right!:** Ensure optimal yeast activity even in chilly conditions. ## Overview The FE650-40 Watt Fermentation Heater is designed to maintain optimal yeast temperatures during cold months, featuring a lightweight design, energy-efficient operation, and compatibility with temperature controllers for precise brewing. ## Description Keep your yeast happy and your ferment warm during those cold winter months with this flexible heater wrap! Unlike those old heater belts, the FermWrap covers a wide area of your carboy or fermentation vessel, promoting an even heat distribution (11" tall x 25" wide.). Using tape to adhere, the FermWrap can be attached directly to your fermenter, or can be used to heat the space in a box (or refrigerator) that the fermenter is in. Depending on your configuration and insulation, you can increase the temperature of your ferment from 5-20 degrees Fahrenheit. This differential can be increased by using our carboy bag to insulate a carboy (this has been tested). To decrease the temperature differential, stick only a portion of the FermWrap to the fermenter. With 40 watts of heat spread over almost two square feet it provides gentle even heating. Draws 40 watts. 115 V. For greater results, we recommend a temp controller and carboy thermowell for the ultimate in fermentation temperature control. Or for the best control, use the dual stage control and carboy thermal well, as well as a refrigerator, to control both the high and low temps. This is the original FermWrap(TM) manufactured and wired by Fermentap in the USA. Be aware there are now some imitations being sold coming from China that have the electrical wire connections, where the cord meets the heat wrap, sealed with silicone. The FermWrap uses the proper electrical clip connections which are safer and will last longer. Review: Works great - I attach mine to my fermenters with reusable vinyl tape. Works fine and doesn't fall off. I've tried masking tape, and it seems to release every few days and required re-application. My basement is at 55F ambient. The thermometer pulled out of the thermowell, resulting in the heater running for 24 hours strain. In a 55F ambient basement, it heated the wort up to 91F. That's a 36F increase! Of course it ruined the batch, but goes to show just how well this performs. Do not be alarmed if you feel this wrap on the fermenter and parts of it are not warm. Those are spots where the fermenter is absorbing heat effectively. It's to be expected and is not a defective unit. Review: Works great, but isn't as big as it looks in the picture. - It isn't apparent from the picture or description, but this doesn't fit around a standard 5 gallon carboy. In fact, it doesn't even go all the way around my 3 gallon carboy. I suspect the picture actually shows 2 of these, one on each side. However, it still heats well. I have one holding my 3 gal carboy at 70 degrees in a room that gets as cool as 64 degrees, and it isn't on all the time so I suspect it could easily heat it past that temperature. ----- UPDATE: I ran a test and put 3.25 gal of water in a 5-gal plastic ale-pail, put this wrap around it, and let it run for a few hours. My water was at about 82F out of the tap when I started, and the ambient temp of the room was 69F. The single FermWrap was able to raise the temp of the water in the bucket to 98F before I called the test quits. Temp probe was submerged in the middle of the water. Pretty impressive! Based on this, I raised my rating to 5 star. ## Features - Keep your yeast warm during the winter months - 40 watts - 115 v - Works great with a temperature controller ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B074D9FCQ8 | | Amperage | 0.35 Amps | | Brand Name | FermWrap | | Color | Clear | | Customer Reviews | 4.4 4.4 out of 5 stars (314) | | EU Spare Part Availability Duration | 1 Years | | Form Factor | Rectangular | | Fuel Type | Electric | | Global Trade Identification Number | 00843200117976 | | Heat Output | 40 Watts | | Heating Coverage | 2 square feet | | Heating Element | Coil | | Heating Method | Convection | | Indoor Outdoor Usage | Indoor | | Item Dimensions D x W x H | 2.5"D x 2.5"W x 2.5"H | | Item Weight | 4 ounces | | Manufacturer | FermWrap | | Max Temperature Setting | 20 Degrees Fahrenheit | | Min Temperature Setting | 5 Degrees Fahrenheit | | Model Number | FE650 | | Number of Speeds | 1 | | Part Number | FE650 | | Power Source | Electric | | Recommended Uses For Product | Home Brewing & Fermentation Temperature Control | | Room Type | Kitchen/Basement/Home Brewing Area | | Smart Home Compatibility | Not Smart Home Compatible | | Special Features | Adjustable Temperature, Portable | | UPC | 843200117976 | | Unit Count | 1.0 Count | | Voltage | 115 Volts | ## Product Details - **Brand:** FermWrap - **Color:** Clear - **Form Factor:** Rectangular - **Indoor/Outdoor Usage:** Indoor - **Special Feature:** Adjustable Temperature, Portable ## Images ![FE650-40 Watt Fermentation Heater - Image 1](https://m.media-amazon.com/images/I/61SbeDoLB5L.jpg) ## Questions & Answers **Q: Is there a way to safely get the probe into the brew without contamination?** A: Yes there's a way, I made a very effective DYI thermowell with a piece of 3/8" x 20" pvc plumbing water faucet supply line by heating the straight end with a torch just to soften (not burn) and pinch the heated end quickly with a pair of locking pliers to crimp the end forming a water tight seal under $2.00 **Q: How does this compare to a seedling mat for the same purpose?** A: I think it would work well for many things. Mine are working well for keeping my brew warm. It would work for seedlings too or for keeping your chicks warm. Take note that the wiring where it attaches to the mat is a little bit vulnerable to breakage but if careful it will be fine. I use two of these and they work beautiful. **Q: would this heat a small martha tent for fermentation adequately and safely?** A: Maybe, the FermWrap is made to raise the temp 20 degrees of room temp. It is not made to heat something in a cold environment. It depends on the room temp. I use it in the winter when my basement is in the 50's. I can put it around my fermenter and drape some towels over it and it will easily keep it at 68 degrees. Hope this helped. **Q: Can this item be also used at 220V with the proper plug?** A: No ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by R***B on May 22, 2020* I attach mine to my fermenters with reusable vinyl tape. Works fine and doesn't fall off. I've tried masking tape, and it seems to release every few days and required re-application. My basement is at 55F ambient. The thermometer pulled out of the thermowell, resulting in the heater running for 24 hours strain. In a 55F ambient basement, it heated the wort up to 91F. That's a 36F increase! Of course it ruined the batch, but goes to show just how well this performs. Do not be alarmed if you feel this wrap on the fermenter and parts of it are not warm. Those are spots where the fermenter is absorbing heat effectively. It's to be expected and is not a defective unit. ### ⭐⭐⭐⭐⭐ Works great, but isn't as big as it looks in the picture. *by R***S on May 7, 2015* It isn't apparent from the picture or description, but this doesn't fit around a standard 5 gallon carboy. In fact, it doesn't even go all the way around my 3 gallon carboy. I suspect the picture actually shows 2 of these, one on each side. However, it still heats well. I have one holding my 3 gal carboy at 70 degrees in a room that gets as cool as 64 degrees, and it isn't on all the time so I suspect it could easily heat it past that temperature. ----- UPDATE: I ran a test and put 3.25 gal of water in a 5-gal plastic ale-pail, put this wrap around it, and let it run for a few hours. My water was at about 82F out of the tap when I started, and the ambient temp of the room was 69F. The single FermWrap was able to raise the temp of the water in the bucket to 98F before I called the test quits. Temp probe was submerged in the middle of the water. Pretty impressive! Based on this, I raised my rating to 5 star. ### ⭐⭐⭐⭐⭐ Great for keeping your kombucha at the right temperature *by L***E on February 8, 2025* We are using this for our kombucha with a temperature controller, and has been working perfectly! ## Frequently Bought Together - FermWrap FE650-40 Watt Fermentation Heater - Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A - #6.5 Stopper Thermowell 15" Long --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/51933488-fe650-40-watt-fermentation-heater](https://www.desertcart.in/products/51933488-fe650-40-watt-fermentation-heater) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-05-07*