Furnace Filter

Changing your furnace filter when necessary can not only improve the quality of air that you breathe, but can also help keep your furnace running properly. You will need to measure your old filter to know the proper size to replace it with. There are varying opinions on how often the filter should be changed, but most heat and air conditioning experts advise that you replace the old filter with a new one once a month.

If you don't change the filter you should at least check it that often to see how dirty it is. If it appears dirty or clogged by pet hair, etc., you should change it as often as needed. This is also true for those who smoke inside. This will also depend on what type of filter your furnace uses and whether you buy an expensive one or a cheaper made version.

The general rule of thumb is to buy filters that you can't see through. If they are too thin they won't filter the air properly, although purchasing one that is ultra-thick may block some of the air flow you need for your furnace to work properly.The right filter in your furnace can help prevent some health problems such as asthma attacks or allergy symptoms.

Physicians that care for people with these types of illnesses recommend using a higher efficiency pleated type of filter that will trap more of the allergens in the air. When tested, these types of furnace filters were shown to remove many of the pollutants and air allergens. They also help remove pet dander from the air which is a cause for many people's allergy symptoms.

If you use the older less expensive type of furnace filter you may not have to change it as often, but you have to keep in mind that the thinner types don't trap as many allergens as the better brands. Investing in good furnace filters will keep your air much cleaner in your home.

Wind Up Flashlights

Wind up flashlights are portable devices that are used for dealing with emergency situations such as power outrages and blackouts caused due to hurricanes, tornadoes, lightning, flooding, and blown out street transformers. They are designed for rough use and can withstand shocks and vibrations that may occur while using them in emergencies.

Wind up flashlights are considered better than rechargeable battery powered flashlights as they can be used as and when needed and do not depend on internal or external battery source. Some wind up flashlights have electric outlet ports that can be used for charging an AM/FM radio to keep users update on the latest civil and natural emergencies occurring in the local area that might affect power supply. It can also be used to charge mobile phones.

The basic mechanism that provides power to wind up flashlights is similar to an electric generator that converts mechanical or kinetic energy into electrical energy. In wind up flashlights, users just need to turn a lever provided on the side or back of the flashlight that winds up the metallic coil present in the flashlight. The coil is connected to a small electric generation unit that converts the mechanical energy of the wound up coil into electrical energy.

The number of times users have to rotate the lever depends on the type of generator and coil used inside the flashlight. On an average, wind up flashlights can be used for six to eight minutes on a single charge depending on the wattage of bulb used in the flashlight.

Wind up flashlights are the most environmentally friendly devices available, as they do not use batteries that eventually have to be dumped, leading to environmental pollution. The only drawback of wind up flashlights is that the metallic coil may wear out due to constant coiling and uncoiling process and may need replacement.

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