Hvac Units

 HVAC is the short form of heating, ventilation and air conditioning. Rather, to put it simply, it is a term used for centralized heating, ventilation and air conditioning. With the advent of the HVAC system convenient regulation of internal temperature of a building has become possible. Before the HVAC systems were introduced effective interior cooling or heating were limited to only a room or a specified zone with the help of localized heating or cooling. An HVAC unit offers interior cooling by drawing warm interior air into the system through a series of return air ducts. Similarly, heating is offered by HVAC systems. During heating as well cooling the interior, air is drawn and passed through a number of air ducts.

 Besides heating and cooling an interior space of a building an HVAC unit can also improve the quality of the interior air through filtration and ventilation. As has already been mentioned HVAC system draws interior air through a series of ducts, hence, the result is there is no stagnation of air. On the contrary air constantly circulates in and around the room. In the process it can also remove odors and excessive moisture from the air. As the interior air moves out through the ducts, many a times the stale inside air gets replaced with fresh outside air. Another advantage of the HVAC units is that as interior air is drawn towards the HVAC system it passes through a number of filtrates and the result is free from all air pollutants.

 Now let us have a look at the different kinds of HVAC systems that are available. In fact, in the recent times there has been enough innovation in the design and functionality of HVAC systems. Some of the common kinds of HVAC system are:

Single stage and Multi Stage HVAC systems: The single stage HVAC systems operate at full capacity even when there is no need. On the other hand, the multi-stage ones can operate at variable speed based on the temperature requirement.

Zoned HVAC systems can heat or cool specific areas of your home by controlling zone valves or zone dampers inside the vents or ducts. The result is you can cool or heat only specific areas of your home when you do not need temperature control in other areas.

 Humidity Control: Humidifiers and dehumidifiers can be added separately to heating and cooling systems to make the humid areas of the building more comfortable.

Heating systems in HVAC come as furnaces or radiant floor heating while cooling system is mostly in the form of air conditioners in various shapes and sizes.

Last but not the least, let us have a look at some of the important features of HVAC units that will make a home comfortable:

 • The design and type of duct work: It is a known fact that if the ducts are not sized and balanced properly the interior of the home will never be comfortable.

• The refrigerant that is to be used is R-410A

• Balanced dampers must be installed at some distance from the diff users and it needs to be certified by a qualified technician

• The location of the indoor as well as the outdoor unit plays an important role in maintaining the efficiency of the system. The location needs to be chosen with care so that the units do not get damaged.

• Higher the efficiency of the air conditioner, lower is the utility bill. Thus, it is always a good idea to buy an appliance which has a higher SEER rating.

• It is a good idea to install a filter dryer in an air conditioner liquid line. This increases the life of the compressor.

• Condensers that are made of single metal lasts better than the ones which have a combination of metals. This holds true especially in corrosive environments.

• For the air conditioner to function properly and to get optimum comfort you can either install an entering air diffused and a return air diffused or you can also install transfer grills or jump ducts

• The air filters should be located at a place which is easily accessible by the homeowners because air filters require maintenance and replacement at regular intervals.


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