Best firewood splitter: how to choose a log splitter

Start with your wood, not the machine

Searches for the "best log splitter" or "best firewood splitter" turn up long ranked lists, but no single machine is best for everyone. A splitter that is ideal for someone splitting a little straight-grained softwood for a weekend fire is the wrong tool for someone heating a farmhouse with knotty hardwood all winter.

Before you look at any model, answer three questions:

1. What wood do you split? Straight-grained wood with few knots splits easily. Stringy, twisted or knotty wood, and wood from crotches where branches meet the trunk, takes far more force.
2. How big are your rounds? Note the widest diameter and the longest length you usually cut. The splitter must physically fit your longest pieces.
3. How much do you split each year? A little for ambiance, part of your heat, or all of your heat. Volume decides how much time and effort a machine saves you.

The firewood BTU chart is a good place to see which species you are likely burning. Dense hardwoods give more heat per piece, but they are often the ones that are hardest to split by hand.

Types of firewood splitters

Manual tools: axe, maul, wedge and kindling splitter

A splitting maul or a splitting axe, plus a sledge and wedge for stubborn rounds, is still the cheapest way to split firewood. There is no fuel, no cord and almost no maintenance. The cost is your time and your body. For a small yearly volume and wood that splits cleanly, it may be all you need.

For kindling, a manual kindling splitter is a fixed blade set in a frame: you place a small piece on the blade and strike the top with a mallet. It keeps your hands away from a swinging hatchet, which is why many people prefer it for making kindling indoors or near the stove.

Some manual splitters use a lever or a sliding weight instead of a swing. They reduce the risk of a glancing blow but still depend on your strength.

Electric log splitters

An electric splitter uses an electric motor to drive a hydraulic pump. It is quieter than a gas machine, produces no engine exhaust and needs no fuel or oil changes for an engine. That makes it practical in a garage doorway, a shed or a yard close to neighbours.

The trade-offs: it needs a suitable outlet, it is usually less powerful and slower than larger gas units, and it is generally built for smaller rounds. Check the manufacturer's instructions on circuit requirements and extension cords before you buy; an undersized cord or a shared circuit can stall the motor or trip the breaker. If you are unsure about your electrical supply, ask an electrician.

In Quebec, this machine is commonly called a fendeuse à bois électrique, and it is a frequent choice for homeowners who split their own wood near the house.

Gas hydraulic splitters

A gas splitter uses a small engine to drive a hydraulic pump. These machines range from compact homeowner units to towable models built for large rounds and long days. They work anywhere, including at the edge of a wood lot far from an outlet, and larger models handle bigger and tougher wood.

The trade-offs are noise, weight, fuel, engine maintenance and exhaust. Never run a gas engine in a closed garage, shed or other enclosed space: engine exhaust contains carbon monoxide.

How to read tonnage claims

Hydraulic splitters are sold by tonnage: the force the ram can push the log into the wedge. Searches like "20 tonne log splitter" show how much buyers focus on that one figure. Tonnage matters, but it is not the whole story.

• More tonnage helps with tough wood. Knotty, twisted or very large rounds need more force. If your wood is mostly straight-grained and modest in diameter, you may not need the top of the range.
• Cycle time matters as much as force. Cycle time is how long the ram takes to go out and come back. A slow machine with high tonnage can feel tedious on a big pile. Look for the cycle time on the spec sheet.
• Log capacity is a hard limit. The maximum log length and diameter tell you whether your rounds will fit at all. Measure what you actually cut.
• Ratings are not always measured the same way. Tonnage figures come from the manufacturer, and not every brand calculates them the same way. Compare spec sheets from the same retailer, read the owner's manual, and ask the dealer what wood and diameters the model is meant for.

Work out how much wood you split a year

Yearly volume is the clearest way to decide between a maul, an electric splitter and a gas machine. If you split a little, a powered splitter may sit idle most of the year. If you heat with wood all winter, the time and strain a good splitter saves adds up every season.

The simplest way to measure it is to look at what you burned last winter. Measure the length, height and depth of your stack (or of the stack you plan to build), and the calculator below turns it into cords, face cords, cubic feet and cubic metres.

If you are not sure what a cord is, or how a face cord differs, see how big is a cord of wood. To estimate how much you need for a season, try the firewood calculator.

Horizontal, vertical or both

Most homeowner splitters work horizontally: you lift each round onto a beam at about waist height. That is fine for small and medium rounds.

Many larger machines can tilt to a vertical position. In vertical mode you roll a heavy round into place instead of lifting it, which saves your back on big pieces. If you regularly handle rounds too heavy to lift comfortably, a convertible horizontal and vertical model is worth considering.

Features worth paying for

• A log cradle or catch tray so split pieces do not fall at your feet.
• A four-way wedge option that splits a round into several pieces in one stroke, useful for high volume and smaller pieces. Check that the machine is rated for it.
• Auto-return on the ram so the ram retracts on its own, which speeds up each cycle.
• Wheels and a tow hitch suited to how you will move it. Check whether a towable model is approved for road use where you live before towing it on public roads.
• Good access to filters, fluid fill and drain so routine maintenance is easy.

Buying a log splitter in Canada

Canadian buyers have a few extra things to think about.

• Parts and service. Before you buy, ask whether wedges, hoses, seals and engine parts are stocked in Canada and whether a local shop can service the machine. A cheap import with no parts support can sit broken for a season.
• Canadian-made splitters. If buying Canadian-made matters to you, check the country of manufacture on the label or spec plate and ask the dealer directly. "Sold in Canada" or a Canadian brand name does not always mean made in Canada.
• Cold-weather use. Hydraulic fluid and engine oil behave differently in the cold. Check the owner's manual for the fluid and oil the maker recommends and for any cold-weather starting or warm-up instructions.
• Manual in French. In Quebec, ask for a French manual and French safety labels so everyone using the machine can read them.
• Recalls. Search Health Canada's recalls site (recalls-rappels.canada.ca) for the brand and model, and in the US search the Consumer Product Safety Commission (cpsc.gov). Do this for used machines too.
• Rent before you buy. Many equipment rental shops rent log splitters by the day. Renting once is a cheap way to learn which size and type suits your wood.

If you buy firewood rather than split it all yourself, the firewood sellers directory lists local sellers. Remember that splitting wood does not change the rules on moving firewood; see the guide to emerald ash borer and firewood rules.

Safety basics before the first split

A log splitter is a powerful machine. Read the owner's manual in full, and follow it over any general advice, including this article.

• One operator at the controls. Keep children, pets and helpers well clear while the ram moves. Never let one person load while another works the controls.
• Hands off the wedge and ram. Never steady a log with your hand while the ram moves, and never reach in to clear a jam while the machine can cycle.
• Check for hydraulic leaks safely. Pressurized fluid escaping from a pinhole can inject fluid under the skin. Never feel for leaks with your hand; use a piece of cardboard, and get medical help right away for any injection injury, even if it looks minor.
• Protective gear. Wear eye protection, gloves, sturdy footwear and hearing protection around engines, as the manual recommends.
• Stable footing. Set the splitter on level, firm ground with the wheels chocked.
• Exhaust. Run gas engines outdoors only, away from doors and windows.

If you split wood as part of a job or a firewood business, workplace safety rules may apply. In Quebec, check with the CNESST; elsewhere, check with your provincial or state occupational health and safety agency.

Questions