--- product_id: 51933488 title: "FE650-40 Watt Fermentation Heater" brand: "fermwrap" price: "£44.45" currency: GBP in_stock: true url: https://www.desertcart.co.uk/products/51933488-fe650-40-watt-fermentation-heater store_origin: GB region: United Kingdom --- # 115V safe power 2 sq ft coverage 40W gentle heat FE650-40 Watt Fermentation Heater **Brand:** fermwrap **Price:** £44.45 **Availability:** ✅ In Stock ## Summary > 🔥 Keep your brew cozy and your yeast thriving all winter long! ## Quick Answers - **What is this?** FE650-40 Watt Fermentation Heater by fermwrap - **How much does it cost?** £44.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/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 - • **Made in USA Quality:** Original FermWrap with trusted craftsmanship, not a cheap imitation - • **Flexible Application:** Attach directly or heat the surrounding space for versatile setups - • **Safe & Durable Design:** Proper electrical clip connections ensure long-lasting, safe use - • **Even Heat Distribution:** Wraps 11"x25" for consistent warmth across your fermenter - • **Precision Temperature Boost:** Raises fermentation temps by 5-20°F for optimal yeast activity ## Overview The FE650-40 Watt Fermentation Heater by FermWrap delivers gentle, even heat over a 2 sq ft area using 40 watts at 115 volts. Designed for home brewers, it raises fermentation temperatures by 5-20°F, ensuring optimal yeast performance during cold months. Its flexible wrap design attaches easily to fermenters or can heat the surrounding space, and it features safe, durable electrical connections made in the USA. Perfect when paired with temperature controllers for precise fermentation control. ## 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. ## 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 ## 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.co.uk/products/51933488-fe650-40-watt-fermentation-heater](https://www.desertcart.co.uk/products/51933488-fe650-40-watt-fermentation-heater) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-20*