LEARN AND UNDERSTANDING AIR CONDITIONING AND ENERGY EFFICIENCY RATIO EER RATINGS

Portable Air Conditioner Efficiency Information Page

Each air conditioner has an energy-efficiency rating that lists how bounteous BTUs per hour are used for each watt of power it draws. For room atmosphere conditioners, this assessing is its Energy Efficiency Ratio, or EER. For central air conditioners, it is the Seasonal Energy Efficiency Ratio, or SEER. These ratings are posted on an Energy Guide Label, which must be attached in a visible place on all new air conditioners. Many air conditioner manufacturers are voluntary participants in its EnergyStar| labeling shortcut. EnergyStar-labeled appliances mean that they have superlative EER and oracle ratings.

How is EER Calculated?

The EER of an air conditioner is its British toasty units (BTU) rating over the wattage. For example, if a 10,000-BTU air conditioner consumes 1,200 watts, the EER is 8.3 (10,000 BTU/1,200 watts). The higher its EER is, the more efficient the air conditioning apartment is. However, normally a higher EER is accompanied by a higher price.

Would the higher Portable Air Conditioner EER Rating show Worth the Extra Cost?

Let's say that we are given a choice between two 10,000-BTU air conditioning units. matchless has an EER of 8.3 and consumes 1,200 watts, and its other has an EER of ten and consumes 1,000 watts. Let's also say that the price difference is $100. To calculate what the payback period is on the more expensive unit, you need to know:

1. About how various hours regarding year the unit will be operating

2. What the rate of a kilowatt-hour (kWh) is character your area

Let's say that you plan to use the air conditioner in the summer (approximately 5 months a year, depending on where you virtuous) also it commit be operating about 8 hours a generation. Let's besides say that the cost of a kilowatt-hour in your area is approximately $0.10. The difference in energy consumption between its dual units is 200 watts, which means that every five hours the less expensive unit will consume 1 further kWh (and consequently $0.10 more) than the additional expensive unit.

sniffy that there are 30 days in a month, you find that during the summer you are operating the air conditioner:

5 mo. x 30 days/mo. x 8 hr/day = 1200 hours

[(1200 hrs x 200 watts) / (1000 watts/kW)] x $0.10/kWh = $24.00

Since the more costly unit costs approximately $100 more, this means that right will take about four oldness for the more expensive apartment to break even.

Buyer Beware!

Not all BTU ratings charge be trusted. applicable because the BTU's are stated to be high on specific air conditioning units, it does not mean de facto is necessarily true. Some manufacturers cede exaggerate the BTU's on units to raise the possibility of selling the them further others commit be more conservative access regards to the BTUs, which leave cause the EER rating to be lower so the lower unstable air conditioner EER may be misleading. It is best not to comply the EER energy rating to serve as your specific criteria now selecting an atmosphere conditioning unit. Do the research on whatever unit you are considering for your home besides you will be happier with your purchase.

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