This controlled terminology is used as the subject headings in the indexing of bibliographic records in PubMed, and elsewhere. 

The term heat loss refers to ____.

Which of the following statements about atmospheric gas burners is false?

The reduction in pressure that occurs when a fluid flows through a constricted section of pipe is called the ____ effect.

Most local building codes require that heat load calculations for low-rise residential buildings be performed in compliance with the ACCA ____ specification.

A reversing valve that uses a solenoid valve to direct high- and low-pressure refrigerant to move the sliding section within the valve body is a ____.

Secondary heat exchangers ____.

It is very important to install a humidifier’s ____ level.

A furnace with an AFUE range of approximately 79% to 83% is a ____ gas furnace.

A(n) ____ draft regulator opens when pulled open by the negative pressure of flue gas suction.