Determining whether you want a gas air compressor or an electric air compressor is one key choice in selecting an air compressor. This decision depends on your specifics needs, requirements, and application.
Gas-powered compressors are the best, if not
the only option on sites where a lot of air is needed and there is no
electricity. During the framing phase of new construction, this is seen most
often.
Usually, these compressors are wheeled for
portability because of the extra weight of the gas engines and the bigger pumps.
They weigh from 120 to 200 pounds. Unless there is a lift gate or ramp, it will
likely take two people to safely load and offload the compressor onto the truck
at this weight.
This article will explain the differences
between gas and electric compressors as well as what each is better suited to.
Gas Compressors
These compressors use gasoline to generate
power. There are a few reasons to choose them over electric ones, the main one
being the lack of an electrical hookup. You might need an extension cord if the
site where you need to use the compressor is distant. Some electric compressors
can’t function that way. If you have a gas unit, all you need to do is fill up
the gas tank and get to work.
Another difference is that gas compressors
don’t have an automatic mechanism to power them up or shut them down. They have
a pilot unloader valve that closes and opens depending on the internal tank pressure.
This mechanism makes it possible for gas compressors to operate without
interruption. It makes the perfect for jobs requiring continuous pressure. They
are usually used for heavy-duty applications and tend to feature heavy-duty
design.
Not Used Indoors
Gas compressors are not safe to use indoors.
They work fine outdoors, where fumes and noise are not much of a problem. Gasoline
is highly flammable and proper maintenance is a must.
Gas compressors tend to be very large, which
is another drawback. The whole transportation process becomes an issue.
Electric Compressors
Even with all their advantages, gas
compressors still aren’t as popular as electric ones. Electric ones are easier
to use, cheaper, and more convenient. You’re better off with an electric
compressor if the job site has a power outlet. Electric compressors are neither
bulky nor heavy unlike gas models. They are much smaller and lighter. They come
in various sizes and styles, which makes them highly versatile.
Most electric units have an easy, intuitive “start-stop”
switch. This starts the motor when the pressure drops below a specific value and
shuts down the motor when the tank pressure reaches its upper limit. When there
are no power tools attached to the compressor, the switch will also do the same. Make Sure you
check AirCompressorsUSA to know
more about electric compressor features.
Not Used with Extension Cords
Admittedly, the most obvious drawback of an
electric unit is that one cannot attach an extension cord to it. If there’s no
place to plug it in, even the most powerful electric compressor is going to be
useless. Electric units are great for trimming and finishing work and indoor
repairs, but not for heavy-duty jobs. Gas compressors are far noisier than
electric units, which provide very quiet operation sometimes.
Electric Compressor Motor Types
Most electric air compressors that are
available for sale have either an induction motor or a universal motor. DIY
enthusiasts should opt for universal-motor compressors. There are some improvements
in design beginning to introduce these motors into the industrial arena as
well.
Induction motors are heavier than universal
motors, putting them at a disadvantage when it comes to consumer preference. Another
disadvantage of induction motors is they start up slower than universal ones.
As a result, the peak amperage is significantly shorter. Amperage protects your
motor from excessive amp draw and prevents annoying trips to the breaker.
The gap between induction and universal-motor
technology is constantly narrowing. When choosing a compressor, be sure to
consider the options.
The life cycle of an induction-motor
compressor is normally twice that of a universal motor one. That said, the
former is typically more expensive than the latter. Given the efficiency of an
induction motor, it will offer a higher CFM than its universal counterpart. The
induction motor may well be the compressor to choose for those on a more
generous budget, who can provide a dedicated circuit.
Configurations
Air compressors are available in a number
configurations, the most common of which include horizontal air
compressors, wheelbarrow air compressors, twin tank air compressors, air
compressor generator combo units, and vertical air compressors.
Specifications
Remember to look at the PSI or CFM of each
compressor. PSI is the pounds per square inch and CFM is cubic feet per minute
that the unit provides in terms of airflow. You’ll want to match your tool power
to your air compressor’s power as much as possible.
Your unit needs enough air pressure to supply
a number of air-powered tools. Thus, it needs more than the air pressure
requirements of your most powerful tool. This is very important because your air
compressor has to put out a pressure that’s sufficient to power all your tools at
the same time.
Power and Size
Most gas compressors are the wheelbarrow type
with an engine and twin tanks, which is good for keeping up with heavy jobs
outside. The heavier you go in power and size, the noisier the unit will be.
It’s a good idea to opt for an electric generator as long as you have access to
power. These are less noisy and more fuel and power efficient. You don’t need
to refill the tank.
Screw Type
The main air compressor types use rotary and reciprocating
screws. The latter are best and most commonly used indoors. Rotary screw
compressors are good for construction sites and industrial applications because
they can provide a steady air supply. They’re better for applications where
compressors need to be running continuously.
No matter what type of compressor you end up
choosing, be sure to take the type of jobs, pricing, and usage area into
account. You’ll be able to select the best electric or gas air compressor for
your needs as long as you weigh each component carefully before making a
purchase.
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