How Your System Works

Your HVAC system keeps your home comfortable all year round. But when it comes to comfort, there's more to consider than just temperature. Your heating and cooling system can purify your home's airflow, fine-tune its humidity levels and more. 

By understanding its primary components, you can better understand how your HVAC system operates. Review our HVAC Terms to get to know these components, how they can improve your home comfort and how they can add to your home's value. 

First, let's check out the different types of heating and cooling systems. 

Types of HVAC Systems

The configuration of your home's ductwork and type of energy supply determine the type of HVAC system your home can accommodate. Each system usually includes either a furnace or electric heat pump that provides heated air, an air conditioner that delivers cooled air, ductwork to allow warm and cool air to move throughout your home and a thermostat to control system functions. 

What makes each system different is how this equipment operates together. Residential heating and cooling is usually grouped into one of the system types listed below. 


  • Heating and Air Conditioning Split System
    A split system includes an air conditioning unit or heat pump installed outside your home and a furnace or air handler installed inside. A mechanical blower forces heated or cooled air through the ductwork. Your thermostat controls this conditioned air that moves through the ducts. 
  • Hybrid Heat Pump HVAC System
    An electric heat pump and a furnace are used in tandem in a hybrid heat pump system. When it's cold outside, the furnace heats your home. The heat pump acts as an efficient, additional heat source during milder weather and provides cool air when it's warm. Your thermostat controls the flow between components.  
  • Packaged Heating and Air Conditioning System
    Compact and efficient, residential packaged HVAC systems contain all the components of a traditional, split HVAC system but fit into a single, outdoor unit. This system is perfect for homes without a basement or homes that require a rooftop solution.

Other Factors

Besides heating and cooling, there are other factors related to HVAC operation that can affect your utility bills and help determine your home's health and comfort.

  • Energy Efficiency
    Determining the necessary system size for your home is an important step for achieving energy efficiency. Ratings like ENERGY STAR®, which was created by the U.S. Department of Energy (DOE) and the U.S. Environmental Protection Agency (EPA), can help you more easily identify efficient heating and cooling units. For HVAC systems, the label indicates products that save anywhere from 15% to 25% more energy than standard HVAC products.

    HVAC products that are energy efficient are good for both the environment and for saving money on your utility bill. Our simple guide to HVAC energy savings helps explore this topic.  
  • Thermostats and Smart Home Controls
    Your home thermostat controls your HVAC system. While all thermostats control indoor temperatures, some also integrate smart home features. Programmable thermostats improve your home's HVAC system efficiency, and Fraser-Johnston® takes this further with integrated voice control using Amazon Alexa and remote access and monitoring via a smart device (including Apple Watch®) in our advanced communicating thermostats. Many of our thermostats can also send notifications to your HVAC dealer to help keep your home comfort system running smoothly. 

    If you're deciding whether to repair or replace your HVAC system, it's important to first understand how your home comfort system works. A Fraser-Johnston® Certified Comfort Expert™ Contractor can help you find the perfect system. Find a Fraser-Johnston® dealer nearby using our Dealer Locator.

Speak with an Expert

Our Certified Comfort Experts are highly trained in home heating and cooling needs, and can provide you with a personalized solution that's right for your home.

Schedule a Home Consultation

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