A lot goes on behind the scenes to ensure that a building’s systems run efficiently so that occupants are comfortable and safe. HVAC systems are a huge part of what keeps the inside of a building at an ideal temperature. Let’s break down everything about commercial HVAC systems to understand better how they function and keep our environment livable.
What is HVAC?
Heating, ventilating, and air conditioning (HVAC) equipment altogether performs the job of heating and cooling buildings. HVAC systems may also be responsible for providing fresh outdoor air to dilute interior airborne contaminants such as odors from occupants. A properly designed and well-maintained system will keep the indoor environment comfortable year round.
One important thing to note is that in New York City, due to limited rooftop space, water is mainly used for heat rejection during the cooling process (cooling towers, chilling, etc.). The following is a list of other HVAC components found in commercial buildings in New York and how they work together to keep your building at an ideal temperature.
- Air conditioner. The air conditioner is designed to dehumidify and remove heat from the area. The cooling is done using a refrigeration cycle.
- Condensing Unit. The condensing unit is connected to the evaporator coil. It is installed by contractors outside of your building and filled with refrigerant gas. When the refrigerant has been cooled to a liquid by the heat exchange, the condensing unit pumps the liquid to the evaporator coil to be evaporated into a gas.
- Compressor. Refrigeration is the process that allows air conditioners to remove heat from inside a building and carry it outside, thereby cooling the indoor temperature. In an air conditioner, refrigerant absorbs heat from a room in the evaporator coil, causing it to change from a cold liquid to a low-pressure, warm refrigerant gas. It is the job of the compressor to squeeze the refrigerant gas, reducing its volume and turning it to a high-pressure, hot gas.
- Air Handler. The air handler is used to condition or circulate the air as part of the HVAC system. An air handler usually contains a blower, heating or cooling elements, filter racks or chambers, sound attenuators, and dampers. Air handlers usually connect to ductwork that distribute the conditioned air through the building and return it to the handler.
- Chiller. A chiller removes heat from a liquid through a vapor-compression or absorption refrigeration cycle. This cooled liquid flows through pipes in buildings and passes through coils in air handlers, fan-coil units, or other systems, cooling and usually dehumidifying the air in the building. There are two types of chillers: air-cooled or water-cooled. Air-cooled chillers are usually outside and consist of condenser coils cooled by fan-driven air. Water-cooled chillers are inside a building and heat is carried by re-circulating water to a heat sink as an outdoor cooling tower.
- Evaporator Coil. The evaporator coil has the opposite role of the heat exchanger; it cools air when the thermostat is set to low temperatures.
- Ductwork. Ductwork refers to the system of ducts that transports air warmed or cooled by the system to the various areas of your building. Ducts are commonly made of lightweight aluminum.
How Long Should My Commercial HVAC System Last?
A commercial HVAC system is going to require the investment of several thousand dollars, and once you spend this money, you’ll want the equipment to last for a long time. You can expect an average lifetime of 10 to 15 years. By taking care of your system with regular HVAC maintenance, you can avoid costly repairs and ensure that your system lasts for a long time.
Is a High-Efficiency System Work the Extra Investment?
A high-efficiency commercial HVAC system can make a substantial difference in your monthly costs. When compared with regular models, high-efficiency HVAC systems can slash heating and cooling expenses by a substantial percentage.
Professional Commercial HVAC Services
Commercial HVAC companies provide professional services to manage all of your HVAC needs so that you don’t have to worry. A professional HVAC and Mechanical Contractor like React Industries can ensure that your commercial HVAC units are compatible with your building management systems. We provide commercial HVAC repair and commercial HVAC maintenance for your facility so that you can focus on what’s important; running your business. Contact React Industries today for professional HVAC services.