How Does Air Conditioning With a Heat Pump Work?

Air Conditioner Size

When choosing a new home air conditioner (“AC” for short), consider the size of the area that needs cooling, as larger spaces may require a more powerful unit. The thermal energy transfer capacity of a heat pump air conditioner is measured in British Thermal Units (BTUs), with higher BTU ratings indicating greater cooling power. Choosing a unit with the right BTU rating will help you maintain comfort and efficiency; an undersized unit may struggle to cool the space, while an oversized unit could lead to unnecessary energy consumption.

Energy Efficiency 

Energy efficiency is another key factor in reducing long-term energy costs. Air conditioning heat pumps with higher SEER2 (Seasonal Energy Efficiency Ratio), EER2 (Energy Efficiency Ratio), and HSPF2 (Heating Seasonal Performance Factor) ratings offer better performance while using less energy. SEER2 measures cooling efficiency, while HSPF2 evaluates a heat pump’s heating efficiency, making it essential for year-round comfort. The Daikin Atlantic product catalog provides updated efficiency metrics for each heat pump to help you make informed decisions when selecting the best system for your home.

Indoor Air Quality

Be sure to also consider the benefits of a system that provides both heating and cooling. In Atlantic Canada’s unpredictable climate, temperatures can shift from below freezing to double digits within days. A heat pump air conditioning system not only ensures year-round comfort but also helps regulate humidity and improve indoor air quality, contributing to a healthier living environment throughout the year.

There are many different kinds of air conditioners to choose from. Heat pump air conditioners come in ductless mini-split and ducted central air options, which we’ll review later on. Other traditional air conditioner options include window-hung air conditioners, and portable air conditioner units. 

Portable air conditioning units are easy to move and install, making them a convenient choice for single-room cooling. However, they come with some drawbacks: limited coverage for bigger spaces, reduced efficiency, and shorter durability. Additionally, they require extra storage space during the off-season. In contrast, powerful and highly efficient heat pumps are ideal for homes that need consistent, wide-area cooling coverage.

Air conditioning window units tend to be more affordable than heat pumps but, like portable units, they provide limited coverage and can be noisy. While these units are convenient for short-term use, heat pumps excel in long-term value, providing better efficiency, comfort, and year-round versatility. 

Mini-split air conditioners are ideal for homes without existing ductwork, or air ducts. These systems allow for zone-based cooling, meaning you can independently control the temperature in different areas of your home. Multi-zone systems can regulate multiple rooms, while single-zone units are an affordable option for cooling one space.

A ducted central air system requires existing ductwork to distribute cooled air throughout the home, ensuring consistent comfort across multiple rooms. This option is better suited for larger homes or that already have duct systems in place.

When choosing between the two, consider your home’s layout, size, and whether you need zone-based cooling control. 

Heat pumps have a higher upfront cost than window or portable AC units but offer long-term savings on both cooling and heating. Their energy efficiency helps lower utility bills over time, making them a smart investment. 

Financial incentives and rebates can also help offset the initial cost of buying a new heat pump. For homeowners in Atlantic Canada, there are federal, provincial, and manufacturer rebates available that make the cost of switching to an energy-efficient heat pump system more affordable. Our downloadable Guide to Heat Pump Rebates in Atlantic Canada is a great resource for getting to know what funding is available in your province.

In addition to rebates, the exact cost of a new heat pump AC system will vary based on factors like the device model and the installation complexity. Working with a certified Daikin dealer directly is the best way to find the right heat pump air conditioner for your home and budget!