Air Conditioners and Furnaces: How Do They Work Together?

HVAC stands for Heating, Ventilation, and Air Conditioning. It is a system used to regulate the temperature and air quality in a building. It typically consists of a furnace, air conditioner, heat pump, and air handler, as well as ductwork, dampers, and other components.

However, the more critical components are the furnace and air conditioners. They need to learn how they work together to ensure the home maintains proper circulation. But how do furnaces and air conditioners work together? Here are some ideas.

1. Sends Air Throughout the House

The furnace and air conditioner work together to send air throughout the home using a system of ducts. The furnace provides heated air while the air conditioner cools the air. The air is then distributed through the ducts to the various rooms in the home.

When the furnace and air conditioner work together, they create a comfortable environment for you and your family. During the summer months, the air conditioner cools the air while the furnace circulates the cooled air throughout the home via the ducts.

a. Forced Air

The furnace and air conditioner use a forced air system to distribute air throughout the home. Forced air is pushed through the ducts using a fan or blower. It is the most efficient way to ensure that the air is evenly distributed throughout the home and that no room is too hot or cold.

b. Central Air

Central air is the most common type of cooling system used in homes. It consists of a central air conditioning unit and a furnace. The air conditioning unit cools the air, and the furnace circulates it throughout the house. The air is distributed through the ducts and registers in each room, which is very efficient and can provide consistent temperatures throughout the home.

2. HVAC Systems Balance Temperatures

HVAC systems are designed to maintain a comfortable temperature in the home by balancing the air temperature and humidity levels. The air conditioner cools the air while the furnace warms it. The atmosphere is then circulated throughout the house using a fan or blower.

The thermostat controls the temperature and can be adjusted to maintain the desired comfort level in the home. Additionally, the system’s air filters help remove pollutants and allergens from the air.

3. Eliminates Warm Air

HVAC systems are designed to eliminate warm air in the home and replace it with cool air by using a compressor and evaporator coil, which cools the air and then circulates it throughout the house.

It helps keep the house at a comfortable temperature and can help reduce energy costs. Additionally, air filters help remove pollutants and allergens from the air, creating a healthier environment.

4. Improves Air Quality

HVAC systems are designed to improve air quality in the home. The air conditioner helps filter out dust, pollen, and other allergens that can contribute to allergies and other respiratory illnesses. The air conditioner also helps eliminate odours from the home.

The furnace also helps improve air quality by using a filter to remove pollutants from the air before circulating throughout the home. Additionally, the furnace can humidify the air, making it more comfortable.


HVAC systems are essential for keeping your home comfortable and energy efficient. They help regulate temperature, improve air quality, reduce energy costs, and keep your home safe. Maintaining your HVAC system is essential to ensure it functions correctly and efficiently.

Legacy Heating specializes in furnace and air conditioning maintenance in Edmonton and Calgary. We aim to help homeowners take care of their HVAC systems, prolonging the lifespan to a few more years to reduce replacement and repair costs. Learn more about our process by booking an appointment through our website today.

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