air conditioners

During the hot summers, almost everyone turns to the cold comfort provided by air conditioning.

But what many people don’t realize – or chose to overlook – is the environmental harm air conditioning brings with it.

According to The Guardian“vehicle air conditioners in the United States alone use 7 to 10 billion gallons of gasoline annually” and due to “demand in warmer regions, it is possible that world consumption of energy for cooling could explode tenfold by 2050, giving climate change an unwelcome dose of extra momentum.”


Environmental Consequences

So what does this mean for the environment?

Most air conditioners in homes (and businesses) are run from fossil fuels like coal. Not only do the fossil fuels release carbon emissions, but energy is also lost in generating and transmitting electric power.

Needless to say, it takes more energy to cool down a house than to heat up a home.

Stan Cox, author of Losing Our Cool: Uncomfortable Truths About Our Air-Conditioned World, told The Independent:

“Air conditioning’s environmental damage is not limited to emissions of greenhouse gases and ozone-depleting chemicals. Lavish deployment of indoor climate control may indeed make it possible for us to live anywhere on the planet, but is that wise?”

That’s not to say that we should all be sweating in discomfort all summer long, but we definitely need to be more fiscal with air conditioning.

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If air conditioning practices don’t change, our planet may be in big trouble.

According to Guus Velders of the Netherlands’ National Institute for Public Health and the Environment and his colleagues, refrigerants (fluids essential in air conditioners that absorb and release heat efficiently at the right temperatures) that accumulate in the atmosphere between now to 2050 will add another 14 to 27 percent to the increased warming caused by all human-generated carbon dioxide emissions.


Eco-Friendly Air Conditioning Tips

Eco-friendly air conditioning is becoming more widespread as air conditioner manufacturers phase out ozone-depleting refrigerants in their products in order to meet new government regulations.

A number of technological innovations are also making AC units greener.

Consumers should be researching for the most energy efficient and the up-and-coming models that may be a worthy investment.

For instance, Mitsubishi Electric Corp’s “ZW series” of household air conditioners are programmed to automatically switch to a low-power consumption mode when nobody is in the room.

Whether by purchasing units with energy-saving technologies or by improving a home’s energy efficiency, here are seven ways to make air conditioners more environmentally-friendly.


1. Size Matters

An under-sized air conditioner not only won’t keep the home cool but will keep trying, wasting electricity and running up the household’s energy bills.

A too-small unit won’t be able to balance the air cooled in the unit’s condenser with the humid, expended air that the evaporator draws out from the home.


2. Two-Stage Compressors

It’s the compressors of an air conditioning unit that typically uses the most electricity.

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Compressors have to work hard to squeeze out the heated vapors so that the refrigerant returns to its cooled state. Two-stage compressors automatically compress less on cool days and more when it’s hot, saving energy.


3. Customized Matched Systems

Some eco-friendly air conditioners achieve optimum energy efficiency by using one source of energy for cooling and another for heating.

Customizing each component of the system, from the thermostat to the indoors coils, creates systems based on a home’s individual heating and cooling needs.


4. Geothermal Heat Pumps

Geothermal heat pumps use the earth as a heat sink, capitalizing on the natural flow of heat from a warm area to a cool one. They can be up to 40 percent more efficient at cooling a home than conventional air conditioners.

While pricey to install, geothermal heat pumps recoup their upfront costs through savings on monthly energy bills.


5. Programmable Thermostats

Installing a programmable thermostat is one of the most affordable ways to green up an air conditioning system.

Homeowners can program the thermostat to remain off when no one is at home and to automatically turn on and cool the home for the household’s return.


6. Regular Maintenance

HVAC professionals should inspect and service air conditioning units at least once each year. Maintenance includes testing refrigerant pressure, accessing the unit’s air flow and checking for leaks.

HVAC specialist may also recommend modifications to increase the system’s energy efficiency.


7. Replacing Air Conditioners

Over 89 million heating and cooling systems in the United States were installed more than ten years ago. These systems operate well below the environmental and energy efficiency standards that are in place today.

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Sometimes the best option is to replace existing units with green air conditioners.


Other Alternatives

Other ways to cool your home include opening your windows and turning fans on to create air flow, taking a shower or getting wet to cool off your body and consider optimizing your basement (which tends to be cooler).


Related infographic: Air Conditioning Facts & History

Air Conditioning Facts and History infographic
Infographic via airconco


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  2. […] thermostats and two-stage compressors also reduce energy consumption. Air compressors consume the bulk of the energy used by an air […]

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