Room air conditioners are a popular choice for cooling homes due to their affordability and convenience. According to the U.S. Energy Information Administration, approximately 25 percent of all homes in the U.S. have a room air conditioner. But with so many options available, how do you choose the best one for your needs?
What Is a Room Air Conditioner?
A room air conditioner works by pulling in the air from the room and passing it through refrigerant coils to cool it. These units can cool areas as large as 1,600 square feet and also help remove moisture and filter the air. While they are not as efficient as central air conditioners, they are significantly less expensive to purchase and install.
What Are the Types of Room Air Conditioners?
When it comes to room air conditioners, most people think of portable and window units. However, there are other types available as well. Here are the four most common types:
Window Room Air Conditioners
Window air conditioners are the most popular choice for most homes. They are easy to install and require only a window and a power source. These units come in various sizes and are typically cost-effective. They also have easily accessible filters, making cleaning a breeze.
Portable Room Air Conditioners
Portable air conditioners are freestanding units that are easy to install. However, despite their name, they are not very portable due to their weight and attached vent hoses. These units work by pulling in hot air, cooling it, and then returning it to the space. The warm air and moisture are vented through a window or hole in the wall.
Wall- and Floor-Mounted Room Air Conditioners
Wall- and floor-mounted air conditioners, also known as ductless air conditioners or mini-split systems, come with two units. One unit is mounted on an interior wall, while the other is placed outside. These units work together to cool the air, releasing moisture and warm air outside. They are quiet, energy-efficient, and aesthetically pleasing. Floor-mounted units are great for people with respiratory issues as they can easily check and replace the filters.
Ceiling Recessed Room Air Conditioners
Ceiling recessed air conditioners, also known as cassettes, are ideal for large rooms or open floor plans. These units send the air in four directions at once and are recessed into the ceiling. While they require 10 inches of clearance for the housing to fit out of sight, they still need to be vented to the outside.
How To Choose a Room Air Conditioner
When selecting a room air conditioner, there are four essential features to consider:
Btu Rating
The British thermal unit (Btu) rating represents the amount of heat it takes to raise the temperature of a pound of water by one degree. To determine the appropriate Btu rating for your room, multiply the square footage by 20. If your area is heavily shaded, subtract 10 percent. If it receives a lot of sunlight, add 10 percent.
Venting
Proper venting is crucial for room air conditioners. Without proper ventilation to the outside, the hot air will remain inside and the unit won't effectively cool the space. Most room air conditioners require a window, door, or wall hole for venting. If setting up a venting system is not possible, consider a central AC system.
Cost
Room air conditioners vary in price depending on the type and Btu rating. Window units tend to be the least expensive, followed by portable units, and wall- and floor-mounted units. Consider your budget and the cooling needs of your space when making a decision.
Warranty
Most residential air conditioner manufacturers offer a five- or ten-year warranty on defective parts. However, these warranties usually do not cover labor costs. It's important to read the warranty terms carefully and consider investing in extended labor warranties and service contracts for additional coverage.
When it comes to cooling a room, room air conditioners offer a cost-effective solution. By considering factors such as Btu rating, venting, cost, and warranty, you can choose the best room air conditioner for your specific needs. Stay cool and comfortable all summer long!