Heating, Ventilation, and Air Conditioning
Fischer Mechanical can provide services for all types and sizes of HVAC systems. These services include: installation, maintenance, hot and chilled water pipes, low pressure steam lines, fan coil units, VAVs, chillers, boilers, valves and pumps, additions and system upgrades. Whatever the need is, Fischer Mechanical is able to provide the quality services necessary to complete the job.
Types of Systems:
Ductless Split Systems: Allows for heating and cooling. Does not require ductwork, so this system is great for new homes and additions to new homes. Also, great for light commercial offices and businesses. A split system is also very beneficial in small electrical and data rooms. They are very electrical efficient.
Explanation of a Heat Pump:
A system where the same relegation equipment is used to heat or cool a home or building. A heat pump removes heat from a conditioned space when cooling and dehumidification are required. It also adds heat to the conditioned space.
In a heat pump system, the water or air becomes the source of heat. The compressor pumps heat source into the space that requires to be heated. The refrigerant is made colder than the condenser water or outdoor air, so that heat flows from the heat source to the refrigerant.
Reasons for Heat Pumps:
-The biggest reason that heat pumps are used is because the system uses the same equipment for heating and cooling.
-Favorable in climates where the winters are mild or not very cold and summers are hot.
-The electricity power rate is reasonable, since heating and cooling is accomplished by the use of electricity.
-If in a location where natural gas or propane is expensive or not easily accessible, electricity is required for heat.
VRV/VRF Variable Refrigerant Volume / Variable Refrigerant Flow:
VRV and VRF are the same types of systems. In the 1980s Daikin had registered the VRV term as an official trademark. A VRF Air Conditioning System has been related to the “Rolls Royce” of air conditioning systems by many different authors and people. A VRF system uses refrigerant for heating and cooling. The system uses inverter compressors that allow for lower power usage for both heating and cooling. Several air handlers on the same refrigerant loop / circuit. There is the ability of expansion, which allows a VRV system can be used on small buildings and very large buildings.
Components of a VRV/VRF System:
-An Outdoor Unit (Can be one unit or multiple)
-Several Indoor Units (Ceiling Mounted Cassettes, Concealed Ceiling Units, and wall mounted units)
-Refrigerant Piping (Connecting the outdoor unit with components of the indoor units.)
How the VRV/VRF System works:
The system runs all on its own. This means that if a person decides to set the room or the building temperature at 72 degrees there will not need to be any adjustments. The system collects data and information from the outside and inside of the building and decides how to operate. There is no need to turn the system on heating or cooling mode. Since the system can adjust to the outdoor temperature, the system is very efficient.
Hydronic Heating and Cooling:
Hydronic heating and cooling is typically installed in buildings versus homes. The reason is the cost of installation in a home is very expensive due to the number of pipes that are required.
Hydronic heating and cooling is a system that has a boiler for the hot water and a chiller for the chilled water. The hot or chilled water is circulated throughout the building using pumps to bring the hot or chilled water to fan coil units. The fan coil units distribute the hot or cold air to the room.