Include your email address to get a message when this question is answered.Be sure to compare the prices of different brands and models before settling on one.Look for an A/C unit with a comparatively long warranty.If you’re buying an A/C unit online, make sure you fully understand the online retailer’s return policy before making a purchase online, just in case you’re not 100 percent satisfied with your new unit.Purchase your room A/C unit at a store if you want in-person help.

wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Good for two or three rooms that are reasonably close together, especially when separate split-systems or a ducted system aren't suitable. Window ACs can be installed in rooms that have a window. What details are mentioned in an invoice when purchasing an air conditioner? Look for a model with a wide airflow range and multiple fan speeds: from very high – to help the room cool down quickly, to very low – so there's less noise and no unpleasant draught once you have the right temperature.Many newer-model air conditioners can be controlled remotely via an app on your smartphone.Look for large, well-spaced buttons with easy-to-read labels, and a big, easy-to-read LCD screen.The remote control should be easy to read and use with well-spaced buttons.This function adjusts the temperature in steps to a comfortable level for sleeping so the air conditioner doesn't work as hard (and is quieter) when you're sleeping.We recommend you point them up for cool air and down for warm. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. If you want to control your system remotely, look for a unit with a remote control or Wi-Fi functionality. The outdoor unit releases the heat and pumps the cooled refrigerant back to the indoor unit where the cycle continues. It's probably a safer bet to get a model slightly above the required capacity than slightly below it, as a little extra grunt may help in extreme temperatures. But the dust filter will only have a minimal effect, if any, on smoke and other very fine particles.Some air conditioners include an air purification filter based on ionisation. See our A single box unit, installed in a window or through an external wall. Energy captured would be wasted None passed the Greenhouse and Energy Minimum Standards ( A solar air conditioner will only use the energy it captures when Likewise, a room in Perth will probably need a more powerful air conditioner compared to an otherwise identical room in Sydney.A proper calculation takes all the room's details into account:Running costs for a medium-sized air conditioner ranges from around $400-$550 a year. Check council regulations before buying, and your strata rules if you live in an apartment, especially if the outdoor unit needs to be installed close to a neighbour's house.The fan circulates cooled or heated air around the room.