The Effects of Extreme Heat on Air Conditioners

Air conditioners cool home interiors about 20 degrees cooler than outside temperatures.
Extreme heat conditions are defined as regional temperatures that remain 10 degrees or more over the normal highs for periods of several weeks. Most air conditioning units are manufactured to function in outside temperatures up to 100 degrees Fahrenheit and to keep your home about 20 degrees cooler inside than the outside temperature. After that maximum outside temperature has been reached, the cooling system begins to fail, increasing amounts of energy are consumed as the system attempts to cool the building, and the mechanical parts of the unit begin to fail.

Insufficient Cooling Capabilities

• If the outside thermometer is showing temperatures of 95 or higher, your air conditioner is running at maximum capacity. The coolest temperature you can expect the interior of your home to reach is about 78 to 80 degrees Fahrenheit. Lowering your thermostat will not help the air conditioner function better. Instead, the unit will continually run with little to no change in interior temperatures. The older the air conditioning unit, the harder the system has to work, and the poorer the cooling results. It's important to note that if your unit fails completely, you should go to a cooled location until your system can be repaired. FEMA reports that about 175 Americans die annually from extreme heat conditions, with the largest percentage of victims being the elderly, infants, young children and those who are obese or in poor health.

More Energy Consumption

• As temperatures climb, everyone in your city begins lowering their thermostats attempting to make the interior of their homes cooler. This increased demand for energy often causes power grids to overload, which, according to FEMA, leads to citywide power outages and complete power failure. During periods of extreme heat your utility bill can see a 50 percent increase because of the constant demand for energy by your cooling unit. TXU Energy recommends setting your thermostat no lower than 78 degrees Fahrenheit while the home is occupied, and 82 degrees Fahrenheit or higher when no one is home (this includes pets).

Increased Wear on the Unit

• Extreme heat conditions result in an air conditioning unit that constantly runs in an attempt to bring down the interior temperatures of your home. The air filters within the inside unit filter more dust and debris, clogging more quickly than normal. The fan on the exterior unit accumulates debris faster as it constantly revolves. Replace the inside filter at least once a month. Turn off the unit, and clean exterior fans with a long-handled brush. Gossett Heating and Air recommends adjusting a lawn sprinkler to water the exterior unit when temperatures reach over 95 degrees Fahrenheit to help lower the internal Freon temperature in the unit. They estimate a 10 percent decrease in your home's internal temperatures when the external unit is cooled with water. Older units (older than 12 years old) may not make it through the arduous conditions of extreme heat, and if these units do, the energy consumption will be higher than a more efficient, newer unit.

  
  

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  Air Conditioner Tips 

Tips to Replace Air Conditioner Units: The Savvy Consumer’s Guide

The federal government recommends that homeowners replace air conditioner units that are more than ten years old. The main reason for this, according to the Department of Energy and Environmental Protection Agency is “ENERGY STAR qualified air conditioners and heat pumps offer significant long-term energy savings.” Replacing central air conditioning units 10 years or older can save at least 20 percent on A/C energy use.

Below, you will find more tips to consider before replacing central air conditioner units.

1.     Up-front cost vs. long term savings

2.     Rebates or other incentives that can assist in your purchase

3.     The dependability and brand reputation of the air conditioner

Is ItTime to Replace Your Unit?

Here is a checklist from ENERGY STAR, that outlines when and why you may need to replace your A/C unit. Among the reasons listed are:

·         Your air conditioner is more than 10 years old: Older units may not be as efficient. New units can save up to 20 percent on cooling costs.

·         Your air conditioner needs frequent repairs and your energy bills are going up: Your cooling equipment may have become less efficient.

·         Your cooling system is noisy: You could have a problem with the indoor coil of your cooling equipment.

·         Your Home Energy Yardstick score is below five: Your home energy use is above average and you're probably paying more than you need to on energy bills.

Pay Yourself Back Fast

Upfront costs for your new, energy efficient air conditioner are offset over time by the energy savings you will see if you choose a high-SEER unit. This payback period (the period of time it takes before a consumer recoups, through lower utility bills, the price increase of the more efficient units) can be trimmed down with government or manufacturer rebate programs.

Some manufacturers offer incentives, such as rebates to “consumers who purchase and install a new heating and cooling system in their home—the better the system, the bigger the rebate.”

Look for Energy Efficiency

SEER (Seasonal Energy Efficiency Ratio) is an indicator of how efficient your unit will be. The higher the number, the more efficient the unit and the lower the operating cost. So, it is advisable to shop around for high-SEER units.

As you research high-SEER air conditioners, you will see that well-known, dependable brands rise to the top of the list of many consumer advocacy review sites (such as The Green Guide, owned by the National Geographic Society).

It’s pretty simple: to save money, replace air conditioner units with durable, trusted brands, high SEER ratings, lower operational and energy costs, and rebates.

For more information or a free estimate contact us at
Komfort Heating & Cooling today. (262-723-2662)


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