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HVAC Basics

HVAC Basics for Beginners

An HVAC system is imperative to keeping your home or office cool in the summer and hot in the winter. When working correctly, you can accurately set the desired temperature in a breeze. However, ensuring that your system is working correctly starts with understanding the basics of an HVAC system.


One of the most commonly used parts of any HVAC system is the thermostat. On traditional HVAC systems, this was a dial looking knob that could be spun to the desired temperature. Over the years, thermostats have developed to incorporate smart technology. In fact, many thermostats can be controlled via your smartphone or other mobile devices. Many of these smart thermostats work to fine-tune the energy usage of your home or office so your system can be as energy-efficient as possible.


All HVAC systems, with the exception of the mini-split units, are attached to ductwork. This is essentially large tin piping that runs throughout the walls and floors of your home or office. You're more likely to see ducting exposed in an industrial setting on the ceiling. These tin pipes work to move air throughout your space and distribute it according to your zoning presets. You'll be able to locate the entrance to your ductwork via a number of vents strategically positioned throughout your home.

Heating Elements

The heating elements of your HVAC system will usually include a furnace and a heat exchanger. The furnace is one of the largest components of your HVAC system and is usually found in the basement. In industrial settings, this furnace may be a boiler. Located inside of the furnace is a heat exchanger. This component heats the incoming air into the furnace via the combustion chamber. The furnace then works to move the heated air into the ductwork throughout your home or office.

Cooling Elements

Your HVAC system will also have elements that assist in cooling the air throughout your home or office. These are mainly composed of the evaporator coil, condensing unit, and refrigerant tubes. Refrigerant is a substance that works to attract heat to an evaporator coil. This coil runs throughout the interior system to the condensing unit that is placed outside. It transports the hot air to the condensing unit that lets off the heat into the outdoors.

Call Us Today

An HVAC system is an important investment that can ensure your family or office stays comfortable throughout the year. If you have questions regarding HVAC systems, maintenance, or need assistance with your existing system, then simply give the experts at Romano Bros. Heating & Air a call today. We have experienced technicians that can handle all of your repair and maintenance needs with ease.