Staying cool: A guide to choosing the right air conditioner for your home

When the summer heat rolls in, a reliable air conditioner can make all the difference in your comfort and energy bill. But with so many options on the market, how do you know which one is right for your home? Let’s break it down.

Types of air conditioners: What’s the difference?

Before you buy, it’s helpful to understand the most common types of AC systems:

Cools your entire home evenly using ductwork and a central unit.
Higher upfront cost, but efficient over time.
Best for larger homes with existing ductwork and those looking for whole-home, consistent cooling.

Provides zone-based cooling with individual room control.
Ideal for older homes, additions, or spaces without ductwork.
Energy efficient, often lowering bills long-term.
Best for homes without ducts or households wanting room-by-room temperature control.

Not permanent but usually stay put once installed.
Generally less efficient than central or mini-split systems, and may allow air leakage.
Best for cooling a single room or a small space.

Vented through a window and movable between rooms.
For short-term or occasional use, like a few hours at night for a more comfortable sleep.
Best for renters or anyone needing a temporary, movable cooling option.

Choosing the right air conditioner for your home

There’s no one-size-fits-all solution when it comes to air conditioner solutions. It all depends on your needs and home layout. Consider:

Home size: Larger homes need more cooling power.
Ductwork: Do you already have it, or need a ductless solution?
Usage: Are you cooling the whole home, or just one area?
Space: Do you have floor space for a portable unit?
Budget: Upfront and long-term costs vary.
Noise: Important for bedrooms and offices.

Energy efficiency: Keeping cool without the extra costs

Choosing an efficient unit lowers energy use and supports sustainability.
- For central and ductless systems, look for the ENERGY STAR® label and a high SEER (Seasonal Energy Efficiency Ratio).
- For window units, check for ENERGY STAR® and a high EER (Energy Efficiency Ratio.
- Portable units rarely meet ENERGY STAR® standards and aren’t rated with SEER or EER.
For systems with thermostats:
- Set your home to 25°C (77°F) for comfort and efficiency. It's cool enough to stay comfortable without overworking your AC.
- Raise it to 28°C or higher when you’re away to reduce unnecessary cooling.
- Manual units (like window or portable ACs) can simply be turned off when not needed.
To reduce how often your AC runs:
- Close your windows and blinds during the hottest part of the day.
- Use ceiling fans to help circulate air.
- Consider window films to keep indoor temperatures more consistent.

What does it cost to install an air conditioner?

Here’s a breakdown:

Type	Upfront cost	Installation	Operation costs
Central	$3,000 - $15,000+, especially if ductwork is required.	Requires professional installation and existing ductwork.	Efficient per square foot, but higher overall energy use due to whole-home cooling.
Ductless mini-split	$3,000 - $12,000, depending on the number of rooms they're installed in.	Requires professional installation, no ductwork needed.	Very efficient. Zoned cooling lowers energy use in unused spaces.
Window unit	$150 - $700	DIY installation, fits in a window.	Efficient for small spaces, but less so if using multiple units.
Portable unit	$250 - $800	DIY installation requires window venting.	Least efficient. Higher energy use due to less effective sealing.

Installation costs vary depending on your home setup and the type of system or unit you’re looking for. It’s worth shopping around and getting a few quotes before committing.

Final thoughts: Comfort meets efficiency

There’s no wrong choice when it comes to staying cool. Whether you’re looking for whole-home comfort, a budget-friendly option, or something in between, the best system is the one that fits your home, lifestyle and goals.
Thinking long-term and choosing an option that suits your home and habits is the key to staying chill all summer long.

Sources:
¹ Consumer Guide to Home Heating and Cooling

²2024 Energy Efficiency Ratings Explained: Understanding SEER, EER, and HSPF Ratings

³Ductless Mini Splits vs Central Air Conditioning: Which Is Better for Canadian Homes?

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