Fujitsu Split AC System in South Portland – What is a Cooling Degree Day?

A cooling degree day (CDD), also known as cooling degree days, is a formula measuring how hot it has been relative to a base temperature over a 24 hour period. The greater the number cooling degree day measurement, the more the air conditioner is likely to be running. Similar in concept is that of heating degree days. The main difference, of course, being that with heating degree days the furnace is the device expected to be working additional time.

AC Split System vs Package System in South Portland – Cooling Degree Day.

The way to find out the cooling degree day number is to use the high temperature and add it to the low temperature for the day in question. that number is then divided by two. For example, if the high one day is 90 degrees Fahrenheit (32 Celsius), and the low is 65 Fahrenheit (18 Celsius), the average temperature would be 77.5 Fahrenheit (25 Celsius). This average Fahrenheit temperature would then be subtracted from 65 Fahrenheit (18 Celsius). Although it is possible to calculate a cooling degree day from any temperature, this one was chosen as a comfortable middle. The result would be 12.5 cooling degree days for that particular day.

AC Split System in South Portland – Air Conditioning Units.

Still, for those who have been in a home for a while and are familiar with their air conditioning units, a cooling degree day number can provide a baseline figure for which to predict energy usage. This is especially true for those families whose habits or situations remain steady throughout most of the warmer months. While it may be possible to do this simply by looking at high and low temperatures, this formula provides an easy baseline and is fairly simple to remember.

AC Split System for Sale in South Portland – Energy Bill.

This can be especially important for people who want to make sure they are budgeting enough money each month for that next month's energy bill. Many times, utility bills can fluctuate wildly during warmer months as some months will be hotter than others. Keeping track of cooling degree days should help those who want a more accurate measure of what they will facing.