Selecting the right size air conditioner

Follow us on Social Media 

What size air conditioner do I need?

Working out what size Air Conditioner you need can be tricky if you don’t know the basics. Here are some air conditioning terms that will help provide the basics on how air conditioning works.

1. Air Conditioning Parts

  • Air conditioners have a compressor and condenser coil. They are housed in a unit outside of your home.
  • An expansion valve and evaporator which is located above your furnace or (HVAC) system inside your home.

2. How air conditioning worksLady on couch

Air conditioners work by cycling gas to liquid and then to gas again through the use of pressure. Air conditioning refrigerant begins the cycle as a low-pressure, low-temperature gas that enters the outside unit where it’s compressed into a high-pressure, high-temperature gas. At this point, the gas enters the condenser coil where the fan cools it into a high-pressure liquid that then flows through tubing to your HVAC unit.

Once it reaches your HVAC unit it enters the expansion valve which limits the flow of the liquid as it enters the evaporator. This expansion valve lets the liquid expand into a gas inside the evaporator coil, chilling it as air from the HVAC blower moves over the coil.

The refrigerant then heads back outside as a low-temperature, low-pressure gas to repeat the cycle again. The Air is being circulated through your home is being chilled after it is blown over the chilled coil and it is then circulated throughout your home. Your AC system continues to run until your desired temperature is reached. Your air conditioning unit both chills and dehumidifies the air in your home.

3. How to choose the right size unit.

The size of your air conditioning unit is a key factor in its efficiency and performance. Things you need to consider in selecting the size of your air conditioner are;

  • The total volume of your home’s living space
  • The size and volume of walls that are exposed to sun
  • The number of windows in your home, as well as their age and orientation
  • The age of your home
  • Is your home well insulated?
  • The quality and efficiency of your existing ventilation system and ductwork

4. Why does the size matter so much?

  • Having an air conditioning unit that is sized correctly will ensure your home stays cooler longer.
  • An air conditioner that is too big will certainly cool your home faster however it will shut off to soon and will cycle on and off more frequently costing more in the long run.
  • An undersized unit will not effectively cool your entire home. It will run continuously, wasting valuable energy.

If you’re unsure about the size or type of air conditioning unit that is right for you, feel free to give us a call. We’d be happy to walk you through the process to ensure you choose the most efficient system for your home. Get a FREE estimate today

You May Also Like…

Is Your AC Ready?

Is Your AC Ready?

Spring is coming! We promise. Now is the time to make sure your A/C is ready for the warmer temperatures...

read more

119 Reay Crescent
Winnipeg, MB R2K 3R2

Privacy Policy

This privacy policy discloses the privacy practices for Xtreme Temp Heating & Cooling Ltd.. This privacy policy applies solely to information collected by Xtreme Temp Heating & Cooling Ltd.. It will notify you of the following:

  • What personally identifiable information is collected from you, how it is used and with whom it may be shared;
  • What choices are available to you regarding the use of your data;
  • The security procedures in place to protect the misuse of your information; and
  • How you can correct any inaccuracies in the information.


We are the sole owners of the information collected. We only have access to/collect information that you voluntarily give us via email or other direct contact from you. We will not sell, share or rent this information to anyone.

We will use your information to respond to you, regarding the reason you contacted us. We will not share your information with any third party outside of our organization, other than as necessary to fulfill your request, e.g. to ship an order.

With your consent, we may contact you via email in the future to tell you about specials, new products or services, or changes to this privacy policy. You may opt out of any future contacts from us at any time.


You can do the following at any time by contacting us via our email address or phone number:

  • See what data we have about you, if any.
  • Change/correct any data we have about you.
  • Have us delete any personal database information we have about you.
  • Express any concern you have about our use of your data.


We take precautions to protect your information. When you submit sensitive information, your information is protected both online and offline.

Wherever we collect sensitive information (such as credit card data), that information is encrypted and transmitted to us in a secure way. You can verify this by looking for a closed lock icon at the bottom of your web browser, or looking for “https” at the beginning of the address of the web page.

While we use encryption to protect sensitive information transmitted online, we also protect your information offline. Only employees who need the information to perform a specific job (for example, billing or customer service) are granted access to personally identifiable information. The computers/servers in which we store personally identifiable information are kept in a secure environment.


Our Privacy Policy may change from time to time and all updates will be available by contacting us.

If you feel that we are not abiding by this privacy policy, you should contact Ed Letkeman, Owner immediately via telephone at 204 782-3401 or via email @


We use “cookies” on this site. A cookie is a piece of data stored on a site visitor’s hard drive to help us improve your access to our site and identify repeat visitors to our site. For instance, when we use a cookie to identify you, you would not have to log in a password more than once, thereby saving time while on our site. Cookies can also enable us to track and target the interests of our users to enhance the experience on our site. Usage of a cookie is in no way linked to any personally identifiable information on our site.


This web site contains links to other sites. Please be aware that we are not responsible for the content or privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of any other site that collects personally identifiable information.

Date: May 7, 2018

Company name: Xtreme Temp Heating & Cooling Ltd.

Printed name: Ed Letkeman, Owner