HVAC systems have the duty of delivering clean air to the environment to provide comfort when required, in addition to adjusting the thermal conditions of a place (usually indoors). Therefore, it would be helpful to have a rudimentary understanding of their parts, not only to appreciate the engineering skill that went into them but also to make it easier to discover potential requirements for your system to function as you like.
It’s critical to realize that HVAC serves multiple purposes and juggles numerous tasks simultaneously. In the summer, people rely on their HVAC systems to keep their homes and offices cool. The heating component of the system keeps them warm during the winter. But an HVAC system does more than regulate temperature; it also circulates clean air, removes airborne impurities, and helps save energy.
Your home’s cooling and heating system is known as the HVAC, or heating, ventilation, and air conditioning, system. The furnace in your HVAC system will keep you cosy in the winter and cool and comfortable in the summer. HVAC system components are provided by numerous Suppliers and Businesses.
Since everyone has grown more aware of their use of fossil fuels in recent years, energy consumption has become even more significant. Due to rising utility bills, new HVAC systems must be optimized for cost and efficiency to give the same results with less energy and money.
Parts of the HVAC system
The HVAC, or heating, ventilation, and air conditioning, system refers to your home’s heating and cooling equipment. The furnace part of the HVAC system will keep you cozy in the winter and cool and comfortable in the summer.
The thermostat deserves special attention because it controls a home’s HVAC system. It essentially functions as a thermometer, controlling when the furnace and air conditioner turn on, thanks to a direct connection to heating and cooling units.
Thermostats come in various designs, including programmed units that change the temperature automatically following a schedule you set. For zoning purposes, you might also choose to install additional thermostats.
2. Heat Exchanger
When your thermostat activates your furnace and heat from burning rises, your heat exchanger, a component of the furnace’s housing, absorbs heat and warms chilly air. All furnaces, including electric ones, have heat exchangers. This critical component is constructed of durable stainless steel with temperature-resistant alloys to avoid cracks and other damage. Additionally, specific versions come with a special duct that enables cool air to reach your heat exchanger more rapidly and keeps you comfortable.
A carbon monoxide leak from your heat exchanger could result in headaches, nausea, or even death. If you use a gas or wood furnace, you should install detectors in your kitchen and bedrooms because carbon monoxide has no taste or smell. Additionally, you should have a professional check out your heating and air conditioning system’s components for issues at least once a year.
3. Furnace and Blower Motor
The blower motor and furnace are two essential components of a residential HVAC system. Because of its size, the furnace typically needs a room in the attic, basement, or closet.
An energy source heats the air as it enters (natural gas, oil, or electricity). The blower motor then disperses the hot air via the ductwork and supply registers. Restarting the process, it draws cool air from the return registers. The blower motor frequently serves as the air conditioner’s distribution source.
4. Combustion Chamber
Your furnace adds air to the fuel inside a combustion chamber, also known as a burner, because oxygen must be available for proper combustion. When a tiny amount of an air and gas combination enters the combustion chamber in a gas furnace, the heating cycle begins. The mixture is then lit by a glow stick or pilot light, which causes a controlled fire to burn as more gas and air are introduced into the burner.
A pilot light is nothing more than a tiny tube that periodically emits a minute amount of gas to serve as a flame’s fuel, whereas a glow stick is an electronic igniting mechanism. While pilot lights must be relit if they burn out, glow sticks light automatically. Pilot lights are only found in older furnaces since they consume more gas than glow sticks. Additionally, if they burn out, they may produce carbon monoxide, posing a safety risk.
5. Evaporator Coil
Evaporator coil is an air conditioner with a split system interior. Usually, it is enclosed in a metal enclosure mounted to the furnace’s side or top. The coil, which resembles a car’s radiator, allows the refrigerant to flow while absorbing heat from the indoor air that flows over it. After the heat is turned off, cool air can circulate back into the living space.
Ductwork is necessary for forced-air heating and cooling to circulate conditioned air throughout the house. Although retrofits are occasionally feasible, initial construction is the best time to add ductwork. If possible, avoid ducts going through the attic, garage, or crawl area. To avoid being impacted by the significant temperature changes between these places and the living space, the ducts should be enclosed and insulated if this is unavoidable.