Heating, ventilation, and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics and heat transfer.
In the past, water heating was more efficient for heating buildings and was the standard in the United States. Today, forced air systems can double for air conditioning and are more popular.
Some benefits of forced air systems, which are now widely used in churches, schools and high-end residences, are
- Better air conditioning effects
- Energy savings of up to 15-20%
- Even conditioning
A drawback is the installation cost, which can be slightly higher than traditional HVAC services.
Energy efficiency can be improved even more in central heating systems by introducing zoned heating. This allows a more granular application of heat, similar to non-central heating systems. Zones are controlled by multiple thermostats. In water heating systems the thermostats control zone valves, and in forced air systems they control zone dampers inside the vents which selectively block the flow of air. In this case, the control system is very critical to maintaining a proper temperature.
HVAC maintenance is an indispensable part of owning an HVAC system. Well, these systems are composed of multiple mechanical and electrical components as well as the means to connect these components to each other in order to create the system, and therefore, it is clear that maintenance would be crucial for them to keep their performance at desired levels, as well as lowering heating and cooling repair or retrofit costs.
All modern air conditioning systems, even small window package units, are equipped with internal air filters. These are generally of a lightweight gauze-like material, and must be replaced or washed as conditions warrant. For example, a building in a high dust environment, or a home with furry pets, will need to have the filters changed more often than buildings without these dirt loads. Failure to replace these filters as needed will contribute to a lower heat exchange rate, resulting in wasted energy, shortened equipment life, and higher energy bills; low air flow can result in iced-over evaporator coils, which can completely stop air flow. Additionally, very dirty or plugged filters can cause overheating during a heating cycle, and can result in damage to the system or even fire.
In general, heating and cooling repair costs range between $150 to $450 on average. The heating and cooling repair cost is mostly on the AC service and then on the furnace service. Diagnostic tests could cost about $80 to $100. The average cost for AC service is about $320, and $270 for furnace services. Should your system require any tune-ups, they could cost between $80 to $120.
In order to avoid replacement and heating and cooling repair costs for the components of the HVAC system, some preventive precautions could be taken. This would help save money for the users of the HVAC system, keep the system’s reliability at desired levels, and also provide high quality air and comfort for the system users consistently.
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References:
https://www.linquip.com/blog/hvac-maintenance-hvac-service-checklist/
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