The requested URL /wordpress/?p=1658 was not found on this server.PACs typically fall in the middle ground compared with the costs of other cooling options. Portable air conditioners offer a distinct alternative to complex HVAC systems and basic cooling fans. These self-contained, mobile systems cater to spaces ranging in size from dens to garages, provided you have a nearby window through which to vent hot air. Like any electric cooling solution, however, the benefits provided by PACs come at a cost. The impact your PAC has on your electricity bill depends on the size of the unit, your utility provider's rate and other factors. Energy Estimates Portable air conditioners range from compact, rolling boxes to mini-fridge-size towers. Likewise, they vary greatly in energy ratings, which are measured in British thermal unit, the amount of energy needed to cool or heat one pound of water by one degree Fahrenheit. This measurement translates to how much heat your PAC can remove from the room each hour.

Especially compact PACs cool about 150 square feet and feature a BTU rating of about 7,500. Mid-range models cool about 300 square feet and output 10,000 BTUs while the largest PACs cover roughly 500 square feet and run at 14,000 BTUs. air conditioning units for schoolsConverting Energy to Cents Converting BTUs to kilowatt-hours, a measurement equal to one kilowatt of power consumption per hour, you'll find that a 7,500-BTU PAC consumes about 2.2 kWh, a 10,000-BTU unit 2.9 kWh, and a 14,000-BTU unit 4.1 kWh. ac outside unit hotAs of 2014, the U.S. Energy Information Administration estimates that one kilowatt-hour of energy usage costs about 16.18 cents in California, for instance. car ac repair nycAt this rate, running a small, medium or large PAC for eight hours a day would cost roughly $2.84, $3.75 or $5.31, respectively.

For 30 days of use, these figures come to $85.20, $112.50 and $159.30. Considering the Variables In addition to BTU ratings and hours of use, location plays a major role in PAC operating cost; for example, the EIA estimates that electricity costs 21.75 cents per kWh in New York, 9.78 cents in Tennessee and 12.74 cents in the District of Columbia, with a national average of 11.88 cents. A longer hose causes your PAC to use more energy, as it diverts hot air through the length of the hose. Similarly, MSN Real Estate estimates that a 10-year-old air conditioner is only about half as efficient as a newly purchased unit. In Comparison According to 2013 reports from the “Rapid City Journal,” running a portable air conditioner uses as little as one-eighth of the electricity required to run a central air-conditioning unit, which roughly translates to one-eighth of the cost, as well. Unlike central cooling, which cools the entire house, PACs cool only one room at a time. In 2013, Home Energy Pros -- “Home Energy” magazine's website -- noted that PACs offer roughly half the cooling power of window air conditioners.

Duke Energy estimates that ceiling fans consume about 23.4 kWh per month, placing them at an average operating cost of only $2.78 per month, according to EIA's 2014 national averages. However, ceiling fans only provide a breeze; they do not actually cool air. References Sylvane: Knowledge Center: Portable Air Conditioners Frequently Asked Questions (FAQ)U.S. Energy Information Administration Independent Statistics and Analysis: Electric Power Monthly: Table 5.6.A. Average Retail Price of Electricity to Ultimate Customers by End-Use Sector, by State, February 2014 and 2013 (Cents per Kilowatt-hour)Rapid City Journal: Is a Portable AC Unit Cheaper Than Central Air?Duke Energy: Electric Appliance Operating Cost ListHome Energy Pros: Warnings About Portable Air ConditionersMSN Real Estate: 27 Cheap Ways to Keep Your House Cooler Photo Credits Polka Dot Images/Polka Dot/Getty Images Suggest a CorrectionThis is a post by my husband Aaron who, thankfully, installed the window air-conditioner unit right next to the bed so it can blow on my pregnant self all night.

That thing is such as life-saver this summer!- Anna As summer rages on and the heat increases we all look for ways to stay cool. Most people, in their time of thermal distress, turn to the air conditioner, one of the more costly, but effective ways to stay cool. Granted, it will always be costly if you chose to use an a/c, but there are ways to keep the cost down. We use pretty much all these tips and they work great. Lets quickly dispel the biggest myth first. Is it cheaper to run the air conditioner all day or turn in on just when you get home? It works something like this. Heat likes to go where it’s not hot. When you hold your fridge door open too long, what happens? The motor kicks on to keep the fridge and everything inside of it cold. That’s because heat is rushing into the cold cavity of the fridge. Your house works the same way. If you are constantly cooling your house, heat is always looking to get in and the air conditioner has to constantly work to keep that heat out.

If you leave the a/c off during the day, the house will heat up and then stop heating because the heat is already where it wants to be. When you get home and turn on your a/c, the air conditioner has less heat to remove, so it uses less energy and less money. Or look at it this way: you can leave the a/c on all day and constantly remove heat or turn it on when you get home and remove it all at once. The most cost-effective (and environmentally friendly) technique is to just turn it on when you’re actually home. Now that that big ol’ myth is cleared up, lets look at 10 more ways to save money while using a costly air conditioning unit… 1. Raise the temperature a few degrees Did you know, according to Mr. Electric that “each degree below 78 degrees farenheit will increase energy consumption by 3-4%”? So, set the air conditioner a few degrees warmer and pay less. 2. Use the air conditioner in conjunction with a ceiling fan This may sound counter-intuitive to run two appliances at once, but ceiling fans are inexpensive to operate, and can help cool your body letting you raise the a/c temperature a few degrees.

A quick note on fans: ceiling fans (and fans in general) don’t actually make the air cooler. Fans work by blowing the hot air surrounding your body away from you. Its like when you blow on a hot spoonful of soup. You don’t have “arctic breath” you are simply blowing the heat off the food, so it gets cooler. That’s essentially what a fan does… it blows the heat your body is generating away from you. Plus, if you are sweating, the fan will cool you by evaporation. 3. Clean the air filter every week When the filter is clogged, the air conditioner has to work harder. The harder it works, the more money it costs you. It takes me just a few minutes to pop out the filter and clean it. 4. Cool only the rooms you are in. Why cool the kitchen when you are in the office on the other side of the house? Quick note: obviously, this isn’t always possible with central air conditioning. Central a/c is expensive and uses a lot of energy mainly because it’s cooling the entire house.

Window units, while still expensive are more economical. If you have central air in your house, try shutting the vents in the rooms you are not in so the cool air gets re-routed the rooms you are using. 5. Buy the right size air conditioner for the room Oversized a/c’s are inefficient and waste money. Sure, they might cool the room down a few minutes faster, but they use more energy. The converse is true too, a smaller air conditioner in a large room will have to constantly work to keep it cool. The proper size one will cool the room down, then it will shut off (if you have that feature activated which we recommend doing). Here is a handy guide on how to select the correct size of air conditioner unit for a room. 6. Use window shades and blinds to block direct sunlight The cooler you can keep your house, the less heat there is that has to be removed. Our old apartment was west-facing and a corner unit so every afternoon our living room got blasted by the sun. We ended up purchasing these white paper accordion shades from the home supply store for just $6 and cut them with scissors to fit the windows (overlapping them in spots to get the right fit).

We placed the paper shades behind the standard window blinds in the apartment and that really helped to keep the heat out. They were white, so not only did they help block the heat, they also helped to reflect the light away from our living room. 7. Seal the windows and doors Cold air that escapes is cold air that has to be replaced, and that means money is sliding on out of your place. Properly sealed doors and windows will help keep the costly generated cold air in. It works just the same in winter time with the heat. Save some bucks by getting a few draft blockers for the bottom of your doors. 8. Keep the back of the air conditioner unit clear and free of debris In order to get cold air out, you first have to suck in air. If the airflow is restricted, then the unit will have to work hard and that means it will hurt your pocketbook (what is a pocketbook anyway?). 9. Keep the lights turned off This is a good energy-saving tip any time of the year, but especially in the summer.