BTU is an abbreviation for British Thermal Unit, which is the international measure of energy. An air conditioner's BTU must be matched to the size of the room for adequate cooling. BTU tables estimate different energy requirements.
A:Generally speaking, thermostats work by using a mercury switch that is in contact with a thermometer wire to trigger a temperature-adjustment lever in response to the expansion or contraction of the wires as they are heated or cooled. The expansion and contraction of these wires triggers switch relays that control heating and cooling by triggering either a circulation fan and heater or air conditioner.
A:Homeowners should use the "on" switch for the fan of an air conditioning unit sparingly, running the fan for a few minutes after the cooling part of the unit has stopped, according to Energy Vanguard. Using the "auto" option for the fan is a better choice.
A:Troubleshooting an air conditioner starts with making sure the thermostat is powered on and connected by setting the system to cooling mode and turning the fan on. If this fails, the power cable and circuit breaker should be inspected.
A:Repair a swamp cooler by replacing defective parts, such as blower motors, floats, pumps and evaporative pads. In areas where swamp coolers are common, most home improvement stores carry these parts. Swamp coolers are simple cooling devices and most owners can make repairs easily.
A:Kerosene and diesel are made up of long, flammable hydrocarbon molecules derived from crude oil, which is also known as petroleum. Kerosene is made up of a mixture of carbon chains with between six and 16 carbon atoms per chain. Diesel fuels are heavier, with anywhere from eight to 21 carbon atoms per chain. Both are liquid at room temperature, but diesel fuel has a higher boiling point.
A:Air conditioners both cool and dehumidify the air, according to About Home Repair. Cooler air is unable to hold as much moisture as warmer air, making dehumidifying a natural part of the cooling process.
A:A pilot light flame stops burning if the thermocouple is damaged or misaligned. The thermocouple is a piece of wire placed near the pilot light flame that detects heat. If no heat is detected, the pilot closes the gas valve to prevent unburned fuel from entering the home.
A:If an air conditioner is not cooling as well as it once was, it may need Freon. Some signs of this include the air conditioner being turned up to the highest setting, but barely producing any cold air, or cold air not coming out at all. Another sign is if large amounts of water are leaking from the air conditioner's air handler.
A:Fans do not typically cause the temperature in a room to drop. It is possible to use a fan to create a wind-chill cooling effect under certain circumstances. A person without air conditioning may only circulate hot air when setting a fan in the center of a warm room.
A:A gas furnace that does not start sometimes requires relighting the pilot light. After waiting a few minutes for fumes to clear the area, the owner can turn the dial to pilot, press the red button, and light the pilot. Holding the button down for 30 seconds warms the thermocouple.
A:Conserving non-renewable fossil fuels by utilizing the earth's natural, renewable resources is one of the major advantages of alternative energy use. Using renewable energy sources is cost effective as well as environmentally friendly.
A:Use the area of a room to determine the proper air conditioner size estimate, which is measured in British thermal units per hour. A 100- to 150-square-foot room needs a 5,000 BTU per hour unit, while a 400- to 450-square-foot room needs a 10,000 BTU per hour unit.
A:Determining the appropriate size for an air conditioner ensures proper and effective function. If the unit is too large, it cools the room but doesn't properly remove humidity, resulting in a damp or clammy feeling. Conversely, a unit that is too small doesn't sufficiently cool the room.
A:The amount of energy used to air condition a building depends on the size and layout of the building and the air conditioner's seasonal energy efficiency rating. A licensed heating and air conditioning contractor can estimate how much energy a given system uses to cool a given building.
A:As of 2014, a building owner can expect to pay between $5,000 and $11,000 to replace the residential HVAC system. The cost of replacing an HVAC system varies greatly. The type of system, installation costs and any necessary changes or modifications to the structure can dramatically affect the cost of replacing the HVAC system.