duct work

Duct Work and High Ceilings | HVAC Duct Work Systems

Duct Work and High Ceilings | HVAC Duct Work Systems Duct Work and High Ceilings – I did not see any reference to my question and would appreciate a response as soon as possible, as due to medical situation, have to make a decision soon. We own an OLD house with 13′ ceilings in a large […]

Air Conditioning and Heating Sizing | HVAC Technical

Air Conditioning and Heating Sizing – How many tons of air conditioning and heating do I need per square foot? Rules of Thumb It is not uncommon for HVAC estimators or HVAC contractors to use various rudimentary techniques which are generally referred to as rules of thumb. Some will say on the low end you need […]

Outside Air Dampers with Energy Recovery | Energy Efficiency

Outside Air Dampers with Energy Recovery The dampers straight across are outside air dampers or make-up air coming from an energy recovery unit. According to the mechanical code commercial buildings require a certain amount of fresh air from the outside to maintain good IAQ for the occupants. An energy recovery unit allows it to be conditioned before being […]

Air Handler Water Coil Freeze Stat | Freezing Protection Control

Air Handler Water Coil Freeze Stat Air Handler Water Coil Freeze Stat – The HVAC Air Handler Freeze Stat is a low temperature limit control and it is used mainly in commercial systems in the duct work on economizers or in air handlers just before any coil especially water coils. It is a safety and […]

Chilled Water Pipe Vibration Isolators | HVAC Piping

Chilled Water Pipe Vibration Isolators Chilled Water Pipe Vibration Isolators – Vibration isolators protect the chilled water piping from receiving vibrations transmitted through the piping when the chillers are running. The vibrations can create problems not only for the chilled water piping but also for the buildings structure. The vibration isolators reduce or eliminate the […]

DDC Control Module for an Air Handling Unit | HVAC Control

DDC Control Module for an Air Handling Unit – This is a direct digital controls control module for an air handler that serves some VAV boxes in office spaces for a Data Center. This DDC control module includes analog and digital inputs and analog and digital outputs to handle all the control functions necessary to control […]

HVAC Reznor Heating System | LP Gas Unit Heater

HVAC Reznor Heating System | LP Gas Unit Heater HVAC Reznor Heating System LP Propane Gas Unit Heater – this Reznor unit heater provides heating for warehouses, garages, and other open spaces which can be heated with unit heaters. Unit heaters are ideal for big open areas which need heating without duct work being used […]

Air Conditioner Ductwork Leaks | HVAC Airflow

Air Conditioner Ductwork Leaks A good consideration when replacing the air conditioning system is the duct work. Duct work seems to be the most ignored part of an HVAC system but is a very important consideration in this age of new technology and higher energy efficient equipment being developed and manufactured. You can have the […]

VAV Air Handler | HVAC Zoning

 VAV Air Handler | HVAC Zoning VAV Air Handlers are ideal for providing zones in a commercial building. Office space typically has several offices and open areas that need to be conditioned for the comfort of the people working in those areas or offices. By installing VAV boxes and zoning the duct work from those […]

Dust Smoke Filter Banks | Indoor Air Quality

Dust Smoke Filter Banks | Indoor Air Quality These filter banks filter the exhaust air from a welding lab where lots of smoke, fumes and related dust ends up going through these smoke filter banks. Specialized filtering systems are commonly used in industrial areas where fumes, smoke, and dust can be hazardous to the health […]

Air Handler Unit Construction Phase | HVAC AHU

Air Handler Unit Construction Phase | HVAC AHU Air Conditioning and Heating AHUs provide air flow throughout the duct systems providing conditioned air throughout the spaces served by the duct work. Air conditioning and heating systems rely on air handlers to move the air throughout the system. The HVAC AHU also conditions the air. The air handler […]

Trane Air Handler Making Dust | HVAC Troubleshooting

Trane Air Handler Making Dust | HVAC Troubleshooting I would appreciate from some one in Trane organization that would please tell me why since installment and still 5 years later my house is nothing to a dust pit. I am not exaggerating. You can wipe dust blankets DAILY off my walls, floors, furniture. I have […]

Air Conditioner Squirrel Cage Blower | HVAC Air Flow

Air Conditioner Squirrel Cage Blower Air Conditioner Squirrel Cage Blower | HVAC blower motors move the air through the system. The blower motor is sized based on the amount of air flow necessary for the system. This blower motor is the supply fan for the supply air in a large commercial York AHU. An AC and […]

Heating with Heat Pumps | HVAC Systems

Heating with Heat Pumps There are some people who say that heat pump heat is not as warm as other types of heat such as a hot water boiler or even a steam boiler. Even the forced air gas furnace gets more credit for providing better heat than the heat pump. Heat pumps are extremely […]

HVAC Inspections and Commissioning – Building & Energy Codes

HVAC Inspections and Commissioning How often have you heard someone complain about inspectors or code officials whose job it is to inspect mechanical, electrical, plumbing, and other trades work for safety and quality workmanship? One could argue that workmanship or even design can be horrible and the work pass a code inspection but chances are […]

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