Best Cheap Wood Moisture Meters Under £20 in the UK

You do not need to spend a lot to stop burning wet wood. A cheap wood moisture meter under £20 is all it takes to tell a ready log from one that needs another summer in the store, and for occasional home use a budget pin meter does that job perfectly well. This guide picks the best sub-£20 options in the UK, explains exactly what you give up compared with a pricier meter like the Stihl, and shows how to get an accurate reading so your few pounds are not wasted. If you want the full range including premium units, see our best firewood moisture meters UK roundup.

Is a cheap moisture meter accurate enough for firewood?

For firewood, yes. Every affordable meter is a pin type: two probes press into the wood and the meter reads the electrical resistance between them. Water conducts and dry wood does not, so a wetter log reads higher. That is all you need to answer the only question that matters, which is whether a log is above or below the 20% ready-to-burn line.

A cheap meter will not match a lab instrument, and it can drift a percent or two, but firewood does not need that precision. The difference between a ready log at 18% and a wet one at 30% is huge and obvious on any working pin meter. Where budget meters fall down is durability, display quality and species accuracy, not the basic pass-or-fail reading.

The best cheap wood moisture meters under £20

Prices move, so treat these as the sub-£20 segment rather than fixed figures, and always confirm the current price before buying.

Dr.Meter pin meter: the reliable budget default

The Dr.Meter is the one most people reach for at this price. It reads across a wide moisture range, switches between wood modes, and is accurate enough to sort ready logs from wet ones with a clear numeric display. It is not rugged and the screen is basic, but as a first meter that simply confirms whether your wood is ready, it is hard to fault for the money. Check the current price on Amazon UK.

Proster wood moisture meter: best cheap pick for mixed species

If you burn a real mix of oak, ash, birch and softwood, the Proster is worth the small step up within the budget bracket. It covers multiple wood-group modes and reads up to high percentages, so it copes better with varied timber than the simplest meters. A capable, low-cost all-rounder. Check the current price on Amazon UK.

Brennenstuhl Damp Detector MD: best if you also check household damp

Sitting at the top of the budget range, the Brennenstuhl doubles as a firewood tester and a damp meter for walls, plaster and floors. If you want one cheap device that handles logs and general household damp, it is the versatile choice rather than a firewood specialist. Check the current price on Amazon UK.

Silverline and other supermarket-cheap meters: fine, with one catch

The very cheapest meters, such as the Silverline, do work for a quick firewood check. The catch is that some ship needing separate batteries, often LR44 button cells, so factor that in and have spares ready. At this price you are buying a basic go or no-go tool, which for occasional users is genuinely all that is required. Check the current price on Amazon UK.

Whichever you choose, buy from the Amazon UK listing and check the current price there rather than trusting any figure quoted elsewhere, because prices in this bracket change constantly.

What you give up versus a pricier meter

Spending more, for example on a Valiant or a Stihl, buys you three things a sub-£20 meter usually lacks: a backlit or colour display that is easy to read in a dim log store, tougher build with better pins for heavy seasonal use, and slightly more consistent accuracy across species. None of that changes the core reading for firewood. If you only test a few logs now and then, the cheap meter is the sensible buy. If you check a whole winter’s worth of wood every year, the extra durability of a mid-price unit can be worth it, as we cover in the full moisture meter roundup.

How to get an accurate reading from a cheap meter

A budget meter gives a good reading if you use it right, and a misleading one if you do not.

1. Always test a freshly split face. The outside of a log dries first, so pressing the pins into bark or a weathered end reads far too low. Split a log and test the fresh inner face.
2. Push the pins in across the grain. Firm contact across the grain gives the truest resistance reading.
3. Test several logs. Check a few from different parts of the stack, not just one, so you get a representative picture rather than a lucky dry sample.
4. Aim for 20% or below. That is ready to burn, with 15 to 18% ideal. Above 20% the wood is harder to light and coats your glass and flue in tar.
5. Mind the batteries. If readings look erratic, a weak button cell is a common cause on the cheapest meters.

Do you need to spend more?

For most households, no. A cheap wood moisture meter under £20 pays for itself the first time it stops you loading a wet log, because burning damp wood wastes heat, blackens your glass and raises the risk of a chimney fire. If your cheap meter keeps reading high, the answer is better seasoning, not a pricier meter. The tool is doing its job by telling you the wood is not ready yet.

Frequently asked questions

Is a cheap wood moisture meter under £20 accurate enough for firewood? Yes. Budget pin meters measure resistance between two probes and are accurate enough to tell a ready log from a wet one, which is all firewood needs. They can vary a percent or two and are less rugged than premium units, but they reliably show whether wood is above or below the 20% ready-to-burn threshold.

What is the best cheap moisture meter for firewood? The Dr.Meter is a dependable budget default, the Proster is a good cheap pick if you burn mixed species, and the Brennenstuhl Damp Detector MD is worth it if you also want to check household damp. All are widely available on Amazon UK in the sub-£20 bracket. Check the current price before buying.

Why does my cheap moisture meter read differently each time? Usually because you are testing different surfaces or a weak battery. Always split the log and test the fresh inner face across the grain, check several logs, and replace the button cell if readings look erratic. Cheap meters are consistent enough for firewood when used on a freshly split face.

Do cheap moisture meters need batteries? Many do, and some of the cheapest ship without them, often needing LR44 button cells. Check the listing before you buy and keep spares, because a flat or weak cell is the most common cause of odd readings on budget meters.

What moisture reading means firewood is ready to burn? 20% or below is ready to burn, with 15 to 18% ideal. Above 20%, wood is harder to light, gives less heat and produces more smoke and creosote. Even the cheapest meter shows this clearly, provided you test a freshly split face rather than the dry outer surface.

Where to go next

For the full range including mid-price and premium meters, read our best firewood moisture meters UK guide. For the official standard your wood should meet, the government-backed Woodsure Ready to Burn scheme and HETAS both explain firewood moisture in plain terms.