I bought one of these, and it's been on high for the last 8 hours and feels barely warm. How long until fully heated?

In the winter my house is cold, I keep my heating pad on the medium setting and my heat strip on the kombucha jar says 78 degrees. You can't go by how hot the pad feels, your jar will feel warm if the pad is working .

can this be used with a 2.5 gallon jar for continuous brew?

It won't work as well with 2.5 gallons. It's designed to be used on a 1-gallon jar. That being said, you will be able to raise the temperature with the wrap on high - it just depends on what temperature you are going for and how cold you keep your house. Also, keep in mind you will have to find a way to secure it as the strap is designed to fit around a 1-gallon vessel. Thanks for the question!!

Does this come with a temperature gauge?

You bet it does. The temperature gauge is an LCD gauge that will stick to the side of your vessel. Thanks for the question!

Is this ul or etl certified? i don't like leaving electronics on for long periods of time if there are no safety standards in place.

I don't know, but I do know that it's perfectly safe to use constantly and for consecutive batches since that is what I did these past cooler/cold seasons and shall do again these upcoming ones.

Heating Wrap | Desertcart UK

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Description

🔥 Brew Boldly, Stay Cozy: The Ultimate Kombucha Heating Wrap 🌿

LIQUID SAFE DESIGN - Engineered to be spill-proof and safe around your fermenting liquids, so no worries during your brew sessions.
PRECISION BREWING CONTROL - Three tailored temperature settings ensure your kombucha ferments perfectly year-round without guesswork.
TEMPERATURE STRIP FRIENDLY - Leave the wrap on while monitoring your brew’s progress with easy access to your temperature gauge.
ALL SEASON BREWING ESSENTIAL - Reliable warmth for the entire fermentation cycle, making cold-weather brewing effortless and consistent.
PERFECT FIT FOR 1 GALLON VESSELS - Designed specifically to snugly wrap standard 1-gallon brewing jars, maximizing heat efficiency.

The Hemlock Home Brewing Kombucha Heating Wrap is a North American 120V heating mat designed specifically for home kombucha brewers. It fits 1-gallon vessels perfectly and offers three precise temperature settings optimized for year-round fermentation. Safe to use around liquids and compatible with temperature strips, it supports the entire brewing process with reliable, energy-efficient warmth, making it a must-have for consistent, professional-quality kombucha at home.

Specifications

ASIN	B07W1B44DV
Batteries required	No
Best Sellers Rank	#51,446 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #9 in Brewing Heaters & Temperature Controls
Customer Reviews	4.6 4.6 out of 5 stars (1,206)
Item Weight	11.3 ounces
Package Dimensions	6.85 x 3.7 x 3.58 inches

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