http://www.homeownerseries.com
This is video #3 of a 3-part series. The videos are:
Part 1 = http://youtu.be/YTSAzqRmJsM
Part 2 = http://youtu.be/wiYrspSwXFM
Part 3 = http://youtu.be/4_8n41bwT_c
To watch the Electrical Systems Playlist = http://www.youtube.com/view_play_list?p=851529BFED1E2994
Air conditioning
Air-conditioning is a very common home feature. Generally, there are two sizes of air-conditioners, rooms air-conditioners used to cool just one room, and central air-conditioners used to cool the entire house. The Air-Conditioning unit should provide a twenty-degree change in air temperature when functioning properly. During the colder months of the year it is difficult to measure if the air-conditioning is working properly because even if the unit produces cold air when it is cold outside this does not ensure that the unit can perform the same when it is hot outside. Insure that the cable connecting the unit to the power supply is in good condition and properly connected. Note that central air units are connected to their own circuit box and supply cutoff switch. The Air-Conditioner should be inspected annually to make sure that the overall condition of the air-conditioner looks good and that there is not any debris, mold, or fungi growth on the coils of the unit that may prevent air flow or contaminate the house.
Heating Units
The heater is another important area to inspect and be aware of. Its electrical connection should be evaluated closely and inspected to make sure it is in good condition. There should not be any rust on the unit and the overall condition of the heater should appear good. The Heater's flame should be a dark blue, if you see a yellow or orange flame burning, this indicates that the heater is dirty and is not efficiently burning the gas. Make sure the pilot light or the electronic ignition is working and that the heater fan turns on when the temperature of the gas burner increases. Additionally, make sure the heater fan shuts off after the burner shuts off and the unit is cool.
Water Heaters
Hot water heaters are either electric or gas. An electric hot water heater is a closed system and is difficult to inspect. Check the over all appearance of the system for any rust and areas that do not look normal. Make sure that the water heater is strapped securely to the wall so that the heater does not move and cannot in any way fall over. For gas water heaters usually the heater is found in the garage of the home. Given that there is a pilot flame that is always on with gas heaters, the heater has to be installed around 18 inches above the garage floor. This is to prevent the pilot flame from igniting any automobile fumes that might be present in the garage. Again make sure that the heater is strapped properly so that there is no way the tank can fall over in the event of an earthquake or other disaster and rupture the gas line. On both types of water heaters there should be a water supply shut off valve located on the pipe before it enters the water heater. This is just incase there ever is a problem with a water leak to the tank so that the water can be shut off immediately. Next, ensure there are no signs of burnt walls or smoke residue on the side of the tank. If this is found the problems needs to be addressed immediately. Most important, make sure that the water heater temperature is set so that the heated water cannot scald your skin or small children if direct contact to the hot water is experienced somewhere else in the house.
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