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2. Testing, adjusting, balancing - Wikipedia

   en.wikipedia.org/wiki/Testing,_adjusting,_balancing

   In heating, ventilation, and air conditioning (HVAC), testing, adjusting and balancing (TAB) are the three major steps used to achieve proper operation of heating, ventilation, and air conditioning systems. TAB usually refers to commercial building construction and the specialized contractors who employ personnel that perform this service.

3. Freeze stat - Wikipedia

   en.wikipedia.org/wiki/Freeze_stat

   Air coil freeze stat. A freeze stat is a temperature sensing device for HVAC that monitors a heat exchanger to prevent its coils from freezing.Freeze stats can be used on both refrigerant-to-air, and refrigerant-to-liquid type heat exchangers and serve different purposes with similar goals for each.

4. ASHRAE Handbook - Wikipedia

   en.wikipedia.org/wiki/ASHRAE_Handbook

   The ASHRAE Handbook is the four-volume flagship publication of the nonprofit technical organization ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers [a]). This Handbook is considered the most comprehensive and authoritative repository of practical knowledge on the various topics that form the field of heating ...

5. National Environmental Balancing Bureau - Wikipedia

   en.wikipedia.org/wiki/National_Environmental...

   Founded in 1971 and headquartered in Gaithersburg, Maryland, USA; the National Environmental Balancing Bureau (NEBB) is an international association certifying firms and qualifying supervisors and technicians in the following disciplines: Testing, Adjusting, and Balancing (TAB) of HVAC systems; Building Systems Commissioning (BSC); Sound and Vibration Measurement (S&V); Retro-commissioning ...

6. Demand controlled ventilation - Wikipedia

   en.wikipedia.org/wiki/Demand_controlled_ventilation

   Standard HVAC system design uses fixed airflow rates to calculate the outdoor air (OA) required in a space. These airflow rates are determined by mechanical code and vary based on expected occupancy and space use. [2] This process of supplying fixed airflow to a space ensures that sufficient OA is present in that space when it is occupied.

7. Air Movement and Control Association - Wikipedia

   en.wikipedia.org/wiki/Air_Movement_and_Control...

   The Air Movement and Control Association International, Inc. (AMCA) is an international trade body that sets standards for Heating, Ventilation and Air Conditioning equipment. It rates fan balance and vibration, aerodynamic performance, air density, speed and efficiency.

8. AOL Video - Serving the best video content from AOL and ...

   www.aol.com/video

   The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

9. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...