6 Important Factors to Consider When Buying an Air Conditioning Unit

kevin Wu • July 15, 2022

6 Important Factors When Purchasing an Air Conditioning Unit

Picking the right air conditioning unit can be tricky. You can’t just walk into a store and buy the first thing you see. It would be best if you considered many things that might be helpful in the future. 


You need to pick the perfect one for your space that will fit your budget and serve its purpose. You might buy a cheap and small one that doesn’t exactly cool the entire room. And, worse—it might break down easily.


So, in this article, we will help you determine which is the right air conditioning unit for you and your place. Here are 6 important factors you need to consider in
buying an air conditioning unit. 


Check them out below!


The Important Factors to Consider on Air Conditioning Units

Keep these factors in mind when selecting the best AC for your needs. These will assist you in buying the best one and avoiding future AC problems. Here are the 6 most important factors to include on your checklist.


1. Type of Air Conditioning Unit

In the majority of rooms, we observe one of two types of air conditioners. Split-type or window type, that's what we're going to discuss in this section.


Window Type AC

A window-type air conditioner is the most basic kind of AC unit. It is a single unit with all parts and pieces inside one box or casing. This type of AC is usually mounted or put in a window and plugged into a regular electrical outlet.


A window air conditioner works the same way as any other kind of air conditioner. It uses its ability to cool air to eliminate heat and humidity in a room and bring
cool air into the room.


The most important consideration when selecting a window AC unit is size. If it's too small, such as 0.5hp, it'll have to work too hard to cool the room, and it won't feel cool enough. If it is too large, such as a 2.5hp size, it will cool the room too quickly without removing enough humidity, causing the room to feel sticky even when it is cool.


Split-type AC

A split-type unit AC is an air conditioning system that consists of two separate units. It has a part for the water or air-cooled condensing unit and a part for the air handling. 


The split-type air handling unit is installed in the air-conditioned room itself. In contrast, its condensing unit is then installed either in the engine room or mechanical space. To add to that, the condensing unit can be mounted outside as well.


It is also important to note that split-type air conditioners can be installed in more places. While window units typically require a specific size and shape for their window and block, the indoor portion of a split-type air conditioner can be installed on any wall in a room. This makes it simple to incorporate into any home's design.


2. Room Size

The performance of an air conditioner will also vary depending on the room it’s trying to cool. You must pick the right size for the room or space that will be utilized. The more horsepower (HP) you need, the bigger the area. Not only does the right power of your air conditioner affect how well it cools your room, but it also affects how much electricity it uses.


If your air conditioner is too small for the room, you'll sweat and have t-shirt stains. If it's too powerful, it will waste energy by overcooling the room, causing the air conditioner to switch on and off more often to maintain the desired temperature. You want to select the perfect size so you don't spend as much on your electricity bill while still cooling your space.


3. Cooling Capacity

The cooling capacity of an air conditioner means how strong the unit is or how much heat it can take out of a room per hour. You wouldn’t want to buy an AC that would take so long to cool a room or, worse, can’t make the room cool enough.


To calculate how much cooling the room can provide, multiply its size by 500 or 1000. (Sq.meter x 500). The simple chart below can help you determine how much horsepower and cooling capacity each of your rooms requires.


4. Inverter or Non-Inverter Option

Air conditioners may be the inverter or non-inverter types.


Inverters

Inverters manage incoming electrical current for your air conditioner's compressor. The room temperature affects their pace. Once the room is chilly enough, an inverter air conditioner will run at lower speeds, requiring less energy.


So, an inverter type will save you money if you plan on running your air conditioner for a long time, such as in your bedroom while you sleep or where you work. 


Non-inverter

Non-inverters, on the other hand, use fixed-speed compressors that shut down when the room temperature reaches the desired level. When the temperature in the room rises, you turn it back on. Air conditioners without inverters can consume a lot of electricity simply by turning on and off. This is especially true if it has been done for an extended period of time.


If you plan to use your AC for short periods, like an hour or two at a time, a non-inverter would suffice and be just as efficient, but non-inverter aircons are often more economical.


5. Energy Efficiency

Have you ever noticed that new air conditioners for sale have this yellow card attached to the front? 


These things show how well the air conditioner uses energy. It is attached because running an air conditioner is expensive and uses a lot of energy. So energy efficiency is something you should think about when buying an air conditioner.


Checking the paper for the EER, or Energy Efficiency Ratio is the best way to see how well an air conditioner works. The most important thing to know is that a higher EER means that the air conditioner is more cost-efficient and will cost less to run. You get to save on expenses and save on the environment, too!


6. Cost of Electricity

There are many things that can change how much energy your air conditioner uses. During the warm months, the average central air conditioner uses between 3000 and 3500 watts per hour. 


In very warm places, air conditioners can run at that level for most of the year. The energy used by your central air conditioner drops to about 750 watts per hour when it is on "fan-only" mode.


Air conditioners consume a significant amount of energy, but the exact amount depends on a variety of factors. That is why it is critical to thoroughly research the air conditioning unit you intend to purchase. This can result in lower consumption and maintenance costs.


Who to Call?

Now that you know how to pick the right air conditioning unit for your home, you may be wondering where to look for one—no need to go anywhere. Carver Metal Sheet Inc. is the most dependable HVAC provider in London. Visit Carver Sheet Metal Inc. today and see their air conditioning units and services.

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As climate patterns shift and summers grow hotter across Canada, homeowners are increasingly turning to air conditioning as a necessary part of daily comfort. But with that comfort comes a cost—both financially and environmentally. If you're tired of soaring electricity bills or want to reduce your household's energy use, investing in the best energy-efficient air conditioners in Canada is a smart move. This guide is here to help you understand what makes an air conditioner energy-efficient, what types are most suitable for Canadian homes, and which models top the charts in 2025. We'll also look at common misconceptions and practical insights to help you make an informed decision without relying on guesswork—or risky DIY installations. Key Takeaways Energy-efficient AC units can significantly lower electricity costs and reduce your carbon footprint. In Canada, features like Energy Star certification and high SEER ratings matter most. Choosing the right AC isn’t just about the unit—it's also about correct installation and expert servicing. Carver Sheet Metal in London, Ontario offers expert advice and trusted installation services for the best air conditioning units Canada has to offer. What Makes an Air Conditioner Energy-Efficient? Understanding SEER and Energy Star Ratings When evaluating energy-efficient air conditioner , the Seasonal Energy Efficiency Ratio (SEER) is a crucial metric. This number indicates how much cooling a system delivers per unit of energy consumed. In Canada, a SEER rating of 14 or higher is generally considered efficient. Many of the best air conditioning units Canada homeowners trust have SEER ratings well above 18. Energy Star certification is another key indicator. These models meet government-backed standards for efficiency without sacrificing performance. According to Natural Resources Canada, switching to an Energy Star-certified AC can reduce cooling costs by up to 30% annually. Central vs. Ductless vs. Portable Units There’s no one-size-fits-all solution. Central air systems are ideal for larger homes, especially those with existing ductwork. Ductless mini-splits offer more flexibility and room-by-room control, making them perfect for renovations or homes without ducts. Portable units, while convenient, often lag in energy efficiency. If you’re in a city like London, Ontario, with its mix of older and newer homes, it’s critical to match the type of unit to your home’s structure and insulation level. That’s why professional consultation is key—something Carver Sheet Metal excels at. Why Energy Efficiency Matters More in Canada Our Unique Climate Demands Better Tech Canadian summers can swing from mild to sweltering, depending on the region. While a basic unit might suffice for coastal areas, inland cities like London, Ontario often face sharp temperature spikes. An energy-efficient air conditioner adapts better to these fluctuations while keeping consumption low. Furthermore, Canada's electricity prices vary by province, with Ontario typically ranking among the higher cost zones. Investing in a high-efficiency AC helps mitigate those long-term costs. Environmental Impact The environmental benefit of using an energy-efficient system cannot be overstated. Less power usage means fewer emissions. With Canada targeting net-zero emissions by 2050, every household can contribute by upgrading their cooling systems. Features to Look For in 2025 Smart Thermostat Compatibility More units now pair with smart thermostats, allowing better temperature control and scheduling. This minimizes energy waste and improves comfort. Variable-Speed Compressors Unlike traditional systems that switch on and off, variable-speed compressors adjust gradually. This reduces energy spikes and prolongs the unit’s lifespan. Quiet Operation & Compact Design Noise may not be the first thing that comes to mind, but it affects your living space significantly. Modern energy-efficient models are quieter and better suited for family or multi-use spaces. Top 5 Energy-Efficient Air Conditioners in Canada (2025) While we’re not naming specific brands to stay focused on your needs rather than promotion, here's what the top-rated units on the market share: SEER Ratings of 18–26 These are among the highest on the market and ideal for long-term savings. Energy Star Certified Every top pick meets or exceeds government standards. Wi-Fi Connectivity Control via smartphone apps for better energy management. Multi-Stage Cooling Offers customizable comfort while using less electricity. Trusted Warranty Longer coverage usually signals quality parts and engineering. Each of these features contributes to lower operational costs and a reduced carbon footprint—goals every homeowner in Canada should prioritize. Why DIY Isn’t the Answer for Installation Energy-efficient systems are only as good as their installation. A poorly installed AC unit, no matter how advanced, can leak air, short cycle, or draw too much power—completely offsetting any potential savings. In fact, government and utility providers recommend professional installation not just for efficiency but also for safety and warranty compliance. Carver Sheet Metal offers precise and dependable services to make sure you get the most out of your investment. When it comes to comfort and cost, why take the risk? at Carver Sheet Metal is here to help you choose the best air conditioning units Canada has available. Located at 11245 Sunningdale Road E, London, ON, we proudly serve homeowners with expert advice and energy-smart installation. Call us today at (519) 555-3821 to schedule your consultation. Choose comfort. Choose savings. Choose Carver Sheet Metal. FAQs Q: How do I know if an AC unit is energy-efficient? A: Look for units with high SEER ratings and Energy Star labels. These certifications mean the product meets national standards for energy performance. Q: Is it worth the higher cost of an energy-efficient air conditioner? A: Yes. While the upfront price may be higher, the long-term savings on electricity bills and reduced maintenance usually pay off within a few years. Q: How much can I save annually with an efficient air conditioner? A: Estimates vary, but Canadian homeowners often save 20–30% on cooling costs when upgrading from older systems. Q: Do energy-efficient ACs work well in older homes? A: Absolutely. Many ductless models are designed for retrofit applications and can be installed without major renovations. Q: Should I size the unit myself? A: No. Proper sizing requires a load calculation that factors in your home’s size, insulation, windows, and more. Always consult a professional. Conclusion Choosing the best energy-efficient air conditioners in Canada isn’t just about comfort—it’s about smarter living. With energy prices on the rise and environmental concerns more pressing than ever, upgrading your AC unit can make a real difference.If you're in London, Ontario, and you're ready to stop guessing and start saving, we’re ready to help. Carver Sheet Metal brings professional insight, honest recommendations, and top-tier service to every home. Ready to experience comfort and efficiency? Give us a call and discover why we’re the trusted name in the best air conditioning units Canada has to offer.
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