SERVING THE DFW METROPLEX “Family owned and operated since 1972” package units St. Lic. # TACLA019484E 214-742-7252 Glossary Blower In HVAC the device in an air conditioner that distributes the filtered air from the return duct over the coil/heat exchanger. This circulated air is cooled/heated and then sent through the supply duct, past dampers, and through supply diffusers to the living/working space. Boiler A vessel or tank where heat produced from the combustion of fuels such as natural gas, fuel oil, or coal is used to generate hot water or steam for applications ranging from building space heating to electric power production or industrial process heat. Boiler Pressure The pressure of the steam or water in a boiler as measured, usually expressed in pounds per square inch gauge (psig). Boiler Rating The heating capacity of a steam boiler expressed in BTU per hour (BTU/H), horsepower, or pounds of steam per hour. Bottled Gas A generic term for liquefied and pressurized gas, ordinarily butane, propane, or a mixture of the two, contained in a cylinder for domestic use. Breathing Zone Area of a room in which occupants breathe as they stand, sit, or lie down. British Thermal Unit (BTU) The amount of heat required to raise the temperature of one pound of water one degree Fahrenheit, equal to 252 calories. Building Envelope Elements of the building, including all external building materials, windows, and walls, that enclose the internal space. Burner Capacity The maximum heat output (in BTU per hour) released by a burner with a stable flame and satisfactory combustion. Air Conditioning and Heating Terms Facts to know about air conditioning and heating Contact Air Conditioning Repair Service faq about heating and a/c faq about heating and a/c Sala Air Conditioning has been serving the DFW area since 1972, providing commercial and residential heating and air conditioning. (Parts, Sales, Service, Installations, and Repairs) Home | Products | Services | Coupons | Contracting  | Contact  | Employment  | About Us   | Sitemap Air Conditioning and Heating Terms A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z B A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z B