Which of the following is not a type of evaporative humidifier?
Blog
Electric furnaces can be installed as ____ furnaces.
Electric furnaces can be installed as ____ furnaces.
A humidifier that sprays small water droplets into the air i…
A humidifier that sprays small water droplets into the air is called a(n) ____ humidifier.
In some furnaces, an opening in the flue, called a(n) ____,…
In some furnaces, an opening in the flue, called a(n) ____, helps keep constant pressure in the combustion chamber and prevents ambient air from reaching the furnace flame.
Which of the following statements about heat pump compressor…
Which of the following statements about heat pump compressors is false?
A typical forced-air furnace is equipped with a(n) ____.
A typical forced-air furnace is equipped with a(n) ____.
With no excess air dilution, the ultimate carbon dioxide con…
With no excess air dilution, the ultimate carbon dioxide content for natural gas is approximately ____.
Which type of furnace takes in return air from the top and f…
Which type of furnace takes in return air from the top and forces it out near the bottom?
A(n) ____ can open and close a gas valve, control a spark or…
A(n) ____ can open and close a gas valve, control a spark or hot-surface igniter, and monitor interlocks.
Which type of furnace can operate to produce either full hea…
Which type of furnace can operate to produce either full heat output or produce at a fixed level that is less than full heat?