Air Conditioning FAQs: Answers to Common Questions about AC Systems

How Air Conditioner Systems Work
The process of air conditioning involves the extraction of sensible heat from the living space to produce a cooler and more comfortable indoor environment. This is accomplished through the operation of a central air conditioning system, which is comprised of two essential components - the Condenser (located outside) and the Evaporator Coil (located inside). These two units work in tandem, leveraging the properties of specialized refrigerants such as Freon (R-22) or R-410A to facilitate the transfer of heat from the return air to the outdoor environment, thus producing a cooler and more hospitable interior climate.
What is SEER in Air Conditioning and Why Does it Matter?
SEER stands for Seasonal Energy Efficiency Ratio. An in-depth look into what SEER means and how it can help homeowners choose more energy-efficient air conditioning systems for their homes. SEER, which stands for Seasonal Energy Efficiency Ratio, is a rating system developed by the Air Conditioning, Heating, and Refrigeration Institute (AHRI) to help consumers evaluate the energy efficiency of air conditioning systems. The SEER rating measures the cooling output of an air conditioning system over a typical cooling season, divided by the amount of energy it consumes during that period. The higher the SEER rating, the more efficient the air conditioner is in terms of energy consumption. Today, homeowners have a wide variety of air conditioning systems to choose from, ranging from mini-ductless units to forced air central air conditioners. These systems can have SEER ratings up to 27.2 for mini-ductless units and up to 25 for forced air central air conditioners, allowing homeowners to choose the most efficient option for their specific needs. Understanding the SEER rating can help homeowners make informed decisions when purchasing new air conditioning systems, as higher SEER ratings can lead to significant savings on energy bills over time.
What Is R-410A Refrigerant?
In 2009, the Environmental Protection Agency (EPA) began phasing out the use of R-22 (also known as Freon) due to its ozone depletion potential. This refrigerant had been widely used in air conditioning and refrigeration systems for many years. In its place, a more environmentally friendly refrigerant called R-410A was introduced. One of the main differences between R-22 and R-410A is that the latter operates at a higher pressure, which requires air conditioning systems designed to handle this increased pressure. R-410A also uses a special synthetic oil that is specifically formulated for use with this refrigerant. While R-410A is considered more environmentally friendly than R-22, it is still important to handle it properly and ensure it is not released into the atmosphere. HVAC technicians who work with R-410A must be trained and certified to do so, and proper procedures must be followed for safe handling, charging, and servicing of systems that use this refrigerant.
Should You Cover Your Air Conditioner During Winter?
Covering your air conditioner condenser unit during winter is a topic of debate among homeowners. While some experts suggest that it can protect the unit from snow and ice, others argue that it's not necessary and may even cause damage. Here are some pros and cons to consider before making a decision.
  • Protects from debris: A cover can prevent leaves, twigs, and other debris from getting inside the unit during winter months when it's not in use.
  • Prevents ice buildup: Covering the unit can help prevent ice from building up on the fan and other components, potentially causing damage.
  • Aesthetics: Some homeowners prefer the look of a covered unit rather than leaving it exposed.
  • Traps moisture: A cover can trap moisture inside the unit, leading to rust and other damage over time.
  • Provides a home for pests: A covered unit can become a home for rodents, insects, and other pests seeking shelter during winter months.
  • Damage during use: If a homeowner forgets to remove the cover before turning on the air conditioner, it can cause damage to the unit and potentially create a fire hazard.
In conclusion, covering your air conditioner during winter is optional and depends on personal preference. If you do choose to cover it, make sure to remove the cover before using the unit and regularly inspect it for any signs of moisture or pests.
What Types of Central Air Conditioners are Eligible for Government Rebates?
Please visit NRCAN for latest rebate information.
Do New Homes Qualify for Ontario Power Authority Incentives?
In general, you can run your air conditioner at any temperature that feels comfortable for you. However, it's important to keep in mind that setting your air conditioner to a very low temperature when the outdoor temperature is high can increase your energy bills and put a strain on your AC system. As a general rule of thumb, it's recommended to set your air conditioner to 78°F (25°C) or higher during the summer months. Additionally, it's important to note that there is a minimum outdoor temperature below which you should not run your air conditioner. Most air conditioners are not designed to operate at temperatures below 60°F (15°C). Running your air conditioner below this temperature can cause the evaporator coil to freeze, which can damage your AC system and decrease its efficiency. Overall, it's important to strike a balance between comfort and energy efficiency when running your air conditioner, and to take into account the outdoor temperature and the capabilities of your AC system.


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