Air Cooled Vs Liquid Cooled Lawn Mower | Which One Is Better

Post Disclaimer

We independently review everything we recommend. The information is provided by Air Cooled Vs Liquid Cooled Lawn Mower | Which One Is Better and while we endeavour to keep the information up to date and correct, we may earn a commission if you buy something through links on our post. Learn more

Have you been puzzling over the distinction between Air Cooled Vs Liquid Cooled Lawn Mower? These two engines, in terms of design, have a considerable difference. In comparison to the liquid-cooled mower, the air-cooled model is more compact and lighter. However, the liquid-cooled model is more substantial and heavier.

This means that both lawnmower engines have their advantages depending on your budget, the size and longevity of your lawn as well as your temperature preferences. So let’s compare air vs. liquid-cooled lawn mowers today to see which one will make a better grass pal for you!

Air Cooled Vs Liquid Cooled Lawn Mower

If you compare their designs, you won’t notice many notable differences. The designers want to make air-cooled engines smaller than those with liquid cooling systems. As a result, lawnmowers with air-cooling systems appear smaller than those with liquid cooling. The air-cooled lawn mower may be conveniently stored in a crowded area because of its small size. The other, though, will require more storage room.

Their valves’ design quality is the same, nevertheless. In most of their engine series, they use OHV (Overhead Valve) designed valves. The manufacturers install these valves in the combustion chamber of the cylinder head. Such constructions increase the power output of the engines. The liquid-cooled mower engine should provide heavy-duty riding performance. Such a liquid system-based engine is the most dependable for industrial use. More than 1500 hours of riding performance are possible with it.

However, with proper maintenance, air-cooled ones often offer 1000 to 1200 hours of riding performance. The substantial weight and larger size of the liquid-cooled mower engine may make it challenging to slide the wheels when riding. However, you do not have to battle when sliding or turning it on difficult terrain with the compact air-cooled ones.

Comparison Between Air Cooled Vs Liquid Cooled Lawn Mower

Lawn Mowers: Air Cooled Vs Liquid Cooled

This type of lawn mower engine has been around for almost a century. However, air-cooled engines are a more recent development. As a consequence, there are some important differences between the two. Air-cooled and liquid-cooled engines have distinct advantages and disadvantages, as outlined below.


When comparing the lifespan of an air-cooled engine with that of a liquid-cooled engine, the liquid-cooled engine is the winner. Due to the water or liquid cooling system, the mower does not generate a lot of heat. The liquid-cooled motor will keep the mower cooler than any other engine type, even if it does overheat.

This means that when it comes to friction, the liquid engines don’t produce as much of it as the gas ones. Additionally, the commercial mower engine and other components will last longer as a result. As a result, liquid-cooled lawnmowers tend to survive longer and run more frequently than air-cooled models.

The air-cooled lawnmower flywheel’s fans aren’t powerful enough to keep the engine or system cool. As a result, these engines are likely to overheat. In addition, the system’s fans use a significant amount of power. Engines wear down quickly as a result. You’ll have to replace it sooner than you thought.

Differences In Maintenance

There are occasions when a liquid-cooled lawnmower needs to be serviced because it is heavier and more modern. Liquid-cooled engine difficulties may include this negative. A good place to start learning about Kawasaki liquid-cooled engine issues is on the internet. However, air-cooled engines don’t require as much cleaning or maintenance as liquid-cooled engines.

The liquid-cooled mower’s water pump, rubber hoses, antifreeze, and water jackets must be free of any dirt or clogs at all times. In addition, you should polish the blades at least 3 times a year for the best outcome. Air-cooled engines on the other hand just need to have their blades replaced annually.

Comparison Of Riding Qualities

With the liquid-cooled mower engine, you can expect heavy-duty riding performance. A liquid system-based engine like this is the most dependable for industrial applications. It can last for more than a year of riding.

On the other hand, an air-cooled motorcycle can last up to 1200 hours with good care. Because of the mower’s weight and size, it may be difficult to slide the wheels while riding the liquid-cooled engine. With air-cooled models, on the other hand, you don’t have to worry about sliding or rotating it on uneven ground.

Differences In Design

There isn’t much of a difference in their designs if you compare them side by side. Air-cooled engines are designed to be more compact than liquid-cooled engines. As a result, air-cooled lawnmowers appear to be smaller than those powered by liquid-cooled motors. The air-cooled lawn mower is easy to store in a busy area because of its small design. The other, on the other hand, necessitates additional storage space.

Their valves, on the other hand, share the same level of design quality. They use OHV (Overhead Valve) valves on the majority of their engine series. These valves are installed in the combustion chamber of the cylinder head by the manufacturers. The increased power is a benefit of such engine layouts.

Air-Cooled Vs Water-Cooled Engine

Because they depend on the vehicle moving to provide their cooling, air-cooled engines often struggle to keep a constant temperature. Water-cooled machines replace their cooling fins with channels that allow coolant to move through the engine block, cylinders, and cylinder head.

Which Is The Better Air-Cooled Or Liquid-Cooled Engine?

Compared to liquid-cooled engines, air-cooled engines use less fuel, are less expensive, and take up less engine area. Compared to air-cooled engines, liquid-cooled engines have higher maintenance expenses. Although more straightforward to use and offer a better riding experience, liquid-cooled vehicles are more likely to leak.


Here we conclude all about Air Cooled Vs Liquid Cooled Lawn Mower. Choosing a lawnmower engine from among the many available options can be extremely difficult. However, before making a purchase, consider this air-cooled versus liquid-cooled lawn mower engine comparison. You’ll be able to make a more informed decision and do so more quickly.

Finally, no lawnmower engine can meet the needs of every lawn care professional or homeowner. If you’re looking for a light-duty engine that’s easy to transport and store, then air-cooled engines are the best option. However, if you are looking for a heavy-duty lawn care product, the liquid ones may be just what you need!

Frequently Asked Questions

When it comes to cooling, what’s better: air or liquid?

An air-cooled engine lacks the torque and power that a liquid-cooled one has. Liquid-cooled engines have greater temperature control since they are cooled by liquids. Liquid-cooled engines are more expensive and take up more room, whereas air-cooled engines are more fuel-efficient and require less space in the engine.

What is the main drawback of air-cooled engines?

The negative is that larger engines produce more heat, making efficient air cooling more difficult. This is why the fastest 911s typically rely on high tuning levels with higher rpm and a greater specific capacity rather than significantly expanded displacement to achieve their speeds.

To what extent do fans make a difference?

An air-cooled engine has several advantages. Coolant leaking is not an issue with air-cooled engines. As a result, they are often lighter than liquid-cooled engines. Unlike liquid-cooled engines, they don’t have to worry about coolant freezing.

Why are Harley-Davidsons not cooled by liquid?

When used in engines with liquid cooling, the metal was supposed to absorb heat and then dissipate it. The Harley-Davidson Twin Cam 103 engine has massive cylinder heads and fins to keep it cool. Even with this engine, touring motorcycles still required an oil cooler.

Similar Posts