SERVING THE DFW METROPLEX “Family owned and operated since 1972” St. Lic. # TACLA019484E 214-742-7252 Glossary Seasonal Energy Efficiency Ratio (SEER) A measure of seasonal or annual efficiency of a central air conditioner or air conditioning heat pump. It takes into account the variations in temperature that can occur within a season and is the average number of Btu of cooling delivered for every watt-hour of electricity used by the heat pump over a cooling season. Setback Thermostat A thermostat that can be set to automatically lower temperatures in an unoccupied house and raise them again before the occupant returns. Soffit A panel which covers the underside of an roof overhang, cantilever, or mansard. Space Heater A movable or fixed heater used to heat individual rooms. Specific Humidity The weight of water vapor, per unit weight of dry air. Split System Air Conditioner HVAC term for an air conditioning system that comes in two to five pieces: one piece contains the compressor, condenser, and a fan; the others have an evaporator and a fan. The condenser, installed outside the house, connects to several evaporators, one in each room to be cooled, mounted inside the house. Each evaporator is individually controlled, allowing different rooms or zones to be cooled to varying degrees. Stack A smokestack or flue for exhausting the products of combustion from a combustion appliance. Stack (Heat) Loss Sensible and latent heat contained in combustion gases and vapor emitted to the atmosphere. Stack Effect The overall upward movement of air inside a building that results from heated air rising and escaping through openings in the building super structure, thus causing an indoor pressure level lower than that in the soil gas beneath or surrounding the building foundation. Stand-by Heat Losses A term used to describe heat energy lost from a water heater tank. Static Pressure Condition that exists when an equal amount of air is supplied to and exhausted from a space. At static pressure, equilibrium has been reached. Steam Water in vapor form; used as the working fluid in steam turbines and heating systems. Steam Boiler A type of furnace in which fuel is burned and the heat is used to produce steam. Storage Water Heater A water heater that releases hot water from the top of the tank when a hot water tap is opened. To replace that hot water, cold water enters the bottom of the tank to ensure a full tank. Supply Duct HVAC term for the duct(s) of a forced air heating/cooling system through which heated or cooled air is supplied to rooms by the action of the fan of the central heating or cooling unit. 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 S 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 S