How to Choose the Right Size Air Conditioner

Excelsior Mechanical Plumbing, Heating & Air Conditioning • May 5, 2023

Installing an air conditioner in your home is an important decision that can affect your energy bills and comfort level. Choosing the right size air conditioner for your home is key to ensuring optimal performance, efficient operation, and cost savings. In this article, we’ll discuss how to calculate the size of air conditioner you need and the factors you should consider when making your selection.


Calculating The Right Unit Size

The size of an air conditioner unit is measured in BTUs (British Thermal Units). To accurately determine the size unit you need for your home, you must first measure the square footage of each room and then assess each room for additional factors such as insulation quality, number of windows, and sun exposure. Once these factors have been considered, add them together to get the total BTU output required for the entire area. You can also use a room-by-room sizing calculator to help make sure you’re getting an accurate result.


Factors To Consider When Selecting an Air Conditioner

When choosing an air conditioner unit, you will also want to consider its energy efficiency ratings and features such as adjustable cooling cycles and noise level ratings. Additionally, you may want to consider a two-stage or variable speed system if you live in areas with extreme temperatures or are looking for more comfort control options.


Professional Air Conditioning Installation Services

Proper installation of an air conditioning system is essential for achieving optimal performance and cost savings over time. An experienced HVAC technician from Excelsior Mechanical can help ensure that your new system is properly installed; this includes connection to ductwork, warranties on parts and labor, proper drainage planning, sound levels control plans and electrical service connections.

                                                                                                                                                                                                                                                                             

Making sure that you choose the right sized air conditioning system is key when building or upgrading your indoor environment at home or work. To ensure your system functions optimally with maximum energy efficiency rating it's important to consider all variables before making a purchase. Additionally, enlisting professional help from air conditioning professionals like Excelsior Mechanical can guarantee safe installation of all systems and components according to code standards. Contact us to discuss your specific AC needs today for more information! 

Share This Blog

Clean utility room with metal tanks, shelves, boxes, and a wall-mounted control panel
By Excelsior Mechanical Plumbing, Heating & Air Conditioning August 19, 2026
Planning to heat your Saskatoon garage this winter? Excelsior Mechanical explains the trenching and sizing rules you must know before installing a gas line.
Plumber tightening a faucet under a kitchen sink with a wrench
By Excelsior Mechanical Plumbing, Heating & Air Conditioning August 11, 2026
Are your water lines rusting from the inside out? Excelsior Mechanical shares four warning signs that your property needs a modern PEX plumbing installation.
Ceiling-mounted HVAC vent in a bright living room with white walls and curtains
By Excelsior Mechanical Plumbing, Heating & Air Conditioning August 5, 2026
Discover why your AC is blowing warm air just as summer peaks. Excelsior Mechanical explains refrigerant leaks and frozen coils in Saskatoon homes.
Wall-mounted heating system with white tank, red expansion tank, boiler, and manifold against wood paneling
By Excelsior Mechanical Plumbing, Heating & Air Conditioning July 21, 2026
Get your Saskatoon home ready as the weather cools. Discover essential hot water tank tips from Excelsior Mechanical Ltd to ensure reliable hot water and comfort all fall and winter.
Technician connecting wires inside a white HVAC unit on a ladder indoors
By Excelsior Mechanical Plumbing, Heating & Air Conditioning July 21, 2026
Looking to save on your energy bills this summer? Learn how high-efficiency furnace and AC upgrades can benefit Saskatoon homes. Discover key savings tips and local rebate options with Excelsior Mechanical Ltd.
Empty utility room with boilers, tanks, and exposed piping along a white wall
By Excelsior Mechanical Plumbing, Heating & Air Conditioning July 15, 2026
Upgrade your Saskatoon garage or workshop for year-round comfort. Discover the best HVAC solutions—and what to avoid—from Excelsior Mechanical’s local experts.
Technician installing a wall-mounted air conditioner in a white room
By Excelsior Mechanical Plumbing, Heating & Air Conditioning July 7, 2026
Stay cool during Saskatoon’s summer heatwaves with expert emergency AC tips from Excelsior Mechanical Ltd. Learn how to troubleshoot, stay safe, and when to call for fast professional repair.
Technician using gauges to service an air conditioner outdoor unit
By Excelsior Mechanical Plumbing, Heating & Air Conditioning June 17, 2026
Celebrate National Indigenous Peoples Day! See how Excelsior Mechanical supports Saskatoon communities and the next generation of tradespeople.
Hand using a screwdriver to open the side panel of a white air conditioner unit
By Excelsior Mechanical Plumbing, Heating & Air Conditioning June 9, 2026
Wondering how often to schedule AC service? Our experts explain annual maintenance schedules for reliable summer cooling in Saskatoon.
Person holding a tablet at a kitchen table, with a bright kitchen in the background
By Excelsior Mechanical Plumbing, Heating & Air Conditioning June 3, 2026
Thinking of upgrading to a smart thermostat? Discover how it helps manage Saskatoon’s variable summer temps and boosts your HVAC efficiency.