Understanding How Your AC and Home Heater Works
A thermostat is a heat sensitive switch that controls the temperature in your house. It has a bimetallic element that responds to the temperature in your home as temperatures rise or lower. The bimetallic element bends to reach the electrical contracts, and, when it reaches the second contact, the contact closes and turns on the furnace and the anticipator of the thermostat. The anticipator warms the bimetallic element until the second electrical contact is broken. The furnace will run until the temperature rises above its set temperature. If your house was built after the 1980s, you may have a thermostat with a coiled bimetallic element. In these thermostats, the contacts are sealed behind glass. When the temperature drops, the bimetallic element starts to uncoil releasing a magnet steel bar at the end of its coil. As it reaches the glass enclosed contacts, the magnet pulls the contact up in its tube to complete the electrical circuit and turn the furnace on. As the air heats, the coil rewinds to break the magnet’s connection and turn the furnace off. Current controls use solid state electronics at control the temperature in a house. They respond to changes in temperature faster, but, they are more difficult to repair.
For a thermostat to responds to the changes in room effectively, they need to be kept clean and free from dust by Air Conditioning and Cleaning Dallas. Dust can effect the calibration of a thermostat and throw off the temperature reading costing homeowners more money to heat their homes. Homeowners can save money by checking the accuracy of their thermostats with a thermometer. You can do this by placing a glass tube thermometer on the wall next to the thermostat and comparing temperature readings. If the thermostat’s readings are off by a couple of degrees, it may need cleaning. You can remove the dust by rubbing a new dollar bill between the contact points, or , if it is a coiled element, by using a soft brush. Then, check the thermostats temperature again against the thermometer to see if cleaning helped. A thermostat’s temperature reading is also effected if it is not installed correctly. A crooked mercury vial thermostat can give an inaccurate temperature reading of a room, and, prevent the furnace from starting. Keeping the unit straight will help the thermostat give an accurate reading.
Dust also effects the performance of a furnace and the comfort of your home. You should have your furnace cleaned and checked for any necessary repairs before the weather turns cool. Most furnaces only need their filters changed to make sure they run efficiently. But, how often your furnace needs cleaning depends on the environment in your house. If your home has a lot of pet hair and dust, your furnace will need to be checked one a year by air conditioning and heating service provider. If your environment is clean, a furnace can go up to three years without a checkup. But, yearly maintenance of your furnace and thermostat will keep your home comfortable.
Air Conditioning and Heating Services in Dallas
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