Need a new A/C unit? Picking an air conditioning unit may seem like a simple task, however, there is a lot to consider when choosing the right unit. Here are some tips you can follow to help you pick the right system for your home.


The Cooling Capacity of the Air Conditioning Unit

The cooling capacity of the unit depends on a variety of factors, some include:

  • The size of your home
  • The amount of rooms in your home
  • The amount of people in your home
  • How many windows are in your home and the amount of sunlight entering your home

Air conditioning units are measured in British thermal units (BTU’s) which is the amount of heat, measured in tons, they can remove from a home in one hour. Therefore, the larger your home is the more cooling power you will need. Below is a chart on how you can figure out how much BTU’s you will need to cool your home.

Area to be Cooled (sq. ft.) Capacity (BTU’s per hour)
700 – 1,000 18,000
1,000 – 1,200 21,000
1,200 – 1,400 23,000
1,400 – 1,500 24,000
1,500 – 2,000 30,000
2,000 – 2,500 34,000


Efficiency Rating

Air conditioning units are rated according to their seasonal energy efficiency ratio (SEER). The higher the SEER rating, the more efficient your unit will be. Nowadays, most quality air conditioning units have a SEER rating of 14 or higher, compared to 2006 when the SEER rating on units were only 10.

The size of the unit also depends on how efficient it will be. If the unit is too small, it won’t work properly on a very hot day and will constantly run in order to cool the house, which will result in an increase in your energy bill. If the unit is too large, it will not adequately remove humidity and will be a waste of energy if you are cooling a smaller space with a larger unit. When purchasing a new unit, look for qualified units since they are 15% more efficient than standard models.



The best advice we can give is to hire a professional. A lot of air conditioning units are not installed correctly which can lead to many problems in the future. Hiring a professional ensures that your unit will be installed correctly and perform efficiently.

Depending on the age of your home, you may need some duct work done when installing a new unit. If you have leaky ducts, you can lose up to 20% of your cooled air by it leaking into the attic or basement. A professional can make sure your ducts are sealed correctly and air isn’t leaking into the attic or basement. They can also check and install a filter on your unit. Filters help clean the air as it moves through the system and will reduce pollen and dust in the air inside your home. 9 out of 10 HVAC system failures are caused by dirt and dust.

Not to mention, all air conditioning units require refrigerant which is the chemical that creates cold air. People who handle this chemical must be licensed by the Environmental Protection Agency (EPA). Take it from us; it’s best to leave it to the pros.

At Absolute Comfort, our company is a participating contractor in the Heating and Cooling Incentive from the Ontario Power Authority. What does this mean for you? You can receive from $250 up to a $650 rebate from the Ontario Power authority on the purchase and installation of an eligible unit.



Prices on air conditioning units vary so it’s best to consult with a professional about what you need and ask about any additional features that may benefit your home. At Absolute Comfort, we offer the best products for you and your home. For example, a high quality Trane air conditioner from Absolute offers the best reliability and warranty protection, along with up to 15% savings a year on your cooling costs. The upfront costs of these units may seem expensive, but overtime the efficient system’s lower operating cost will more than pay for the higher upfront cost. This is a more affordable and environmentally friendly option.



Think of your air conditioning like your vehicle; it needs regular maintenance and check-ups in order to run properly. At Absolute Comfort, we offer a 24/7 call service to help answer all your questions or to stop by and fix or check what is needed. Book an annual inspection and one of our highly trained technicians can inspect your unit to ensure it is running as efficiently as possible. Call us today at 519-252-2699.