8.25" Floating Thermometer for Homebrewing Beer & Wine Making Review (2026)
Updated September 14, 2026 · Research-based review
Our verdict
This 8.25 inch floating thermometer, sold as CentralBrewShop, reads about negative 5 to 220 Fahrenheit and floats upright in a bucket or kettle for a quick check. It is compact and battery-free, but the unbranded listing gives little accuracy detail. Our score of 7.0 out of 10 places it in the lower half of the guide.
An 8.25" floating thermometer for homebrewing beer and wine making, a buoyant tool for quick temperature checks.
Price range: $ (Budget)
What we liked
- + 8.25" size is a good fit for buckets and kettles
- + Floating design stays upright and visible in the liquid
- + Works for beer, wine and even cheese or yogurt making
Trade-offs
- - Compare accuracy against name brand floating thermometers
- - Can drift toward the kettle edge where readings differ
Who this thermometer suits
This floating thermometer fits a homebrewer who wants a compact, inexpensive way to spot-check temperature while steeping grains, cooling wort or making wine and does not need a probe long enough to reach the center of a large kettle. At 8.25 inches it is shorter than the 12 inch dial thermometers in this category, which makes it easier to fit into a smaller bucket, pot or 1 gallon fermenter without the probe crowding the space. It also gets described as useful beyond beer and wine, including cheese and yogurt making, so anyone doing occasional dairy fermentation alongside homebrewing gets some added use from one tool. Brewers who want documented accuracy specs or a recognizable brand name backing the thermometer may want to compare it against branded alternatives before buying, since this listing is fairly bare on manufacturer detail.
What the size and scale actually offer
The thermometer measures 8.25 inches with a weighted, alloy steel housing built to keep it floating upright rather than tipping onto its side in liquid, and the printed scale reads Fahrenheit from about negative 5 to 220 degrees, a range covering everything from cold storage checks up to boiling. It is an analog design with no digital display, battery or calibration screen, keeping it simple to use straight out of the package. The internal fill used in this style of floating thermometer is generally not intended for contact with food or drink, so if the glass or housing cracks, the batch it was floating in should be discarded rather than salvaged. Because the listing itself does not name a specific manufacturer beyond the CentralBrewShop storefront, exact accuracy tolerances are not published.
Using it day to day and keeping it working
Drop the thermometer into wort, must or wash and let it settle before reading, since floating analog thermometers respond more slowly than a digital probe and can take a minute to stabilize on a true reading. Because it can drift toward the edge of a kettle or bucket rather than staying centered, check that it is not resting against a hot wall, which can skew the reading a few degrees warmer than the liquid's actual temperature. Rinse it after each use and store it somewhere it will not get knocked around, since the housing protects the glass element but is not rated for rough handling. Treat any breakage as a reason to discard the batch rather than continue, given the internal fill is not food-safe.
Trade-offs against other brewing thermometers
In the site's brewing thermometers guide, this model ranks fifth of seven at 7.0, behind the Home Brew Ohio and HomeBrewStuff 12 inch dial thermometers tied at 8.4, the Tilt wireless hydrometer at 8.1 and the Craft A Brew 9 inch glass floating thermometer at 7.6, but ahead of the Home Brew Ohio venting dial thermometer at 6.8. Compared with the Craft A Brew model, this one is slightly shorter and built around a weighted steel housing rather than plain glass, which may make it a bit more resistant to tipping, though both share the same basic floating design and the same slow-settling downside compared with a digital probe. Against the clip-on dial thermometers at the top of the guide, this floating style remains easier to use in a bucket or open fermenter but cannot reach the center of a deep kettle the way a long probe can.
Verdict and who should pick something else
Choose this thermometer if you want a compact, inexpensive floating option for spot-checking temperature in a bucket, small kettle or 1 gallon fermenter, and you are comfortable with an unbranded listing that does not spell out accuracy specs. It earns a middle-of-the-guide score because it does the basic job without adding cost, even if it lacks the documentation of a name-brand model. If probe length and reaching the center of a full-size kettle matter more to you, the Home Brew Ohio or HomeBrewStuff 12 inch dial thermometers are the stronger choice. Buyers who want a well-documented brand history should look at the Craft A Brew floating thermometer instead, which carries a recognizable homebrew name.
Frequently asked questions
What temperature range does this thermometer read?
The printed scale covers roughly negative 5 to 220 degrees Fahrenheit, spanning cold storage checks up to a full boil.
Is the internal liquid food-safe if the thermometer breaks?
No, the fill used in this style of floating thermometer is not intended for contact with food or drink, so discard the batch if the housing or glass cracks.
Can this thermometer be used for things besides beer and wine?
Yes, its compact floating design also gets used for cheese and yogurt making, since it works in any liquid where a floating temperature check is useful.
How does it compare to the Craft A Brew floating thermometer?
Both float freely and settle more slowly than a digital probe, but this model uses a weighted steel housing and a slightly shorter 8.25 inch length, while the Craft A Brew version is plain glass and carries a more established brand name.
Prices change often, so check the current price and availability on Amazon.
Check price on AmazonHome Brew Craft may earn a commission from the link above.