choosing an air conditioner

Choosing An Air Conditioner

When it comes to choosing an air conditioner, there are so many options! Brands, sizes, features, ratings…how are you supposed to know which one to pick? Check out our tips below for not only how to choose an air conditioner, but choosing the perfect one for you and your home!

No “One Size Fits All”

First, it’s important to know that not all air conditioners are the same. They are sized according to their cooling capacity (which are expressed in BTU per hour), so your first consideration is to match the air conditioner to the room you want to cool. If the unit is too large, it will cool the space so quickly that the thermostat will shut the unit down without lowering the humidity level. If the unit is too small, it will overwork, but won’t cool the space. As a rule of thumb, air conditioners with a 15,000 BTU rating should be able to cool rooms up to approximately 875 sq. ft.

How Do You Know?

How do you know how much cooling capacity your space requires? This is dependent upon square footage, windows, sun exposure, insulation, room use, etc. Most units you’ll see in stores compare the square footage of the room to BTU capacity. However, you can use a simple air conditioning calculator available from The Association of Home Appliance Manufacturers to determine the cooling capacity of your space.


During the cooling season, your AC filter should be replaced every 3-4 weeks. For this reason, you should check the AC units you’re shopping for to see how easy (or hard) it is to replace the filter. If it is hard for you to reach or replace, the less likely you are to do it. Try to find one that simply slides up and down without any screws or other fasteners.


It may not be the first thing you think about, but control options are important when shopping for an air conditioner. Look for multi speed fans and adjustable thermostats. Both of these will help you achieve maximum comfort and switch to lower settings for a quieter operation. More precise control is offered by digital controls, with features such as preset scheduling and timers to control certain temperatures at certain times. This feature can ultimately save you money and your unit efficiency!


Another consideration should be energy efficiency. Manufacturers are required to list the energy rating directly on the unit, making an easy determination of energy efficiency. The EER, or Energy Efficiency Ratio, is the cooling capacity divided by the electrical power required to run the unit. The higher the number, the better. Any unit with an EER above 10 is extremely efficient. Of course, with a higher EER also comes a higher price tag.

Energy Star

If you have done any research on choosing an air conditioner, or if you’ve even examined one closely, you may have seen the Energy Star logo. What does this mean? The Energy Star program was created by the U.S. Department of Energy and the Environmental Protection Agency to award the most efficient appliances on the market. If you see that red logo, that means it is certified to be 15% more efficient than those meeting the minimum federal requirements.

Now’s The Time

At Bosworth, we are happy to be Dave Lennox Premier Dealers. This means we have access to the best Lennox promotions available, and are able to offer our customers significant savings on a qualifying system. Currently, you can save up to $1700 on a Lennox system from now until June 9, 2017. Learn more here or contact us today!

Comments 9

  1. It really is quite important to figure out just how much cooling you need for your home’s size like the article points out. This is important because choosing an air conditioner that is too large or too small could lead to an increase in your energy bills. If you’re still not sure, it might help to ask the company you’re buying the air conditioner from about which size they think will be the best fit for your home.

  2. I like that you mention how important it is to get the right size for you. My dad is looking to get a new air conditioner but honestly could use some tips. I’ll be sure to talk to him about finding a unit that will fit for his situation.

  3. My hubby and I are checking some air conditioning unit for our new home, and we want to make sure that we’ll choose the one that’s right for us. I like your tip on checking if the unit is energy efficient and if it has the energy star logo. You mentioned that this will ensure that the unit is 15% more efficient than those meeting the minimum requirements. Thanks for such helpful tip! I’ll share this with hubby!

  4. I do like your reminder to check for more precise control to be able to maximize the comfort we will be gaining from the AC unit. That’s perfect since we are going out later to purchase one since they’re way cheaper than purchasing them during summer. Additionally, we could have overlooked about the simple detail of how controls will help us enjoy our AC more if it weren’t for your tips. Thanks!

  5. Thanks for helping me better understand air conditioners and how to take care of them. My fiance and I are looking to move into a new place once I graduate school, but we had no idea how to take care of them. Just like you talked about here, the filter needs to be replaced every 3 to 4 weeks in order to keep the air conditioner working optimally. With that being said, I think that if your filter is working perfectly, you can save some money on cooling your home since it does not have to work as hard. Thanks again!

  6. Honestly, I appreciate that you mentioned about keeping the controls in consideration when choosing an AC unit as it would help you achieve maximum comfort if you know how to use its functionalities properly. That is a quite timely advice to have too as we are just about ready to look for an air conditioner next week to maximize the low demand for it due to the cold weather. Hopefully, we can find one that would fit us perfectly and is easy to handle. Thanks!

  7. I had no idea that it was recommended to replace your AC filters every 3-4 weeks during the hot seasons. It makes sense to think that as your unit is used more it would need more care with its filters. We are planning on getting a new AC and want to make sure we find the best one for our area.

  8. Thanks for mentioning how you need to replace the filter of your AC every 3 weeks when in use. It is important to remember that doing some research can help you find the best type of unit that can suit your needs properly. I can see how anyone looking into this would also want to consult with a professional they trust in order to find the best way to install and maintain your cooling system.

Leave a Reply

Your email address will not be published. Required fields are marked *