Central Air Conditioners: Energy Efficient Option

Central air conditioners are designed to move cold air through a supply and then return back to ducts. Registers or supply ducts will carry the air from the AC throughout the home. As air continues to circulate through the home, the air begins to warm up which is when it returns to the ducts and registers.

They can help dehumidify air that is coming into the home, but if the climate outside is humid, or when the AC unit is a bit oversized, low humidity might not be achieved. If you choose to operate a dehumidifier in your home, you will find that it increases the amount of energy used for the AC as well as the dehumidifier. The AC is going to need more energy to cool down your home.

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How To Add A Central Air Conditioning To The Home?

Economical air conditioning of any kind of house is now possible with the introduction of new central air conditioning equipment. The last large category of existing homes previously considered difficult or expensive to air condition - those with hot water or steam heat and those without central heating systems - can now add summer cooling at a reasonable cost without modifying the heating equipment.

Practically all homes fall into one of the following five categories as far as heating systems are concerned.

1. If you live in a home with warm water or steam heat using radiators or one of the other radiant heat applications, you can install a summer air conditioner such as the Summer Weathermaker. The small unit located inside the house contains cooling and dehumidifying coils, filter and air-circulation fan. It can be hung from the ceiling in a hallway, closet or utility room, or placed in a minimum space in the attic, basement or crawl space.

The simplest kind of duct system can be used because perimeter discharge of air which is usually advisable for heating systems in cool climates is not necessary for cooling. It is connected to a refrigerating unit requiring no water which is located outside.

2. If your house has a floor furnace or space heaters, the approach is the same as indicated above for houses with wet heat.

3. If you have a modern forced warm air heating system in good condition, you can obtain year- round air conditioning at a comparatively low cost. You can install a conversion unit which uses the furnace and existing duct system for filtering and air circulation and adds cooling and dehumidifying. There are models available which can be installed with any kind of forced warm air furnace, whether it is the standard vertical type, counterflow or down-flow unit, or a horizontal heating plant installed in a crawl space or attic.

The small, quiet cooling and dehumidifying coil package is located at the discharge end of the furnace, and a weatherproof and tamperproof refrigerating unit requiring no water is placed out of doors.

4. If you have a forced warm air furnace which is getting old and worn, it might be better to replace it with a summer and winter unit like the Year-Round Weathermaker than to try to convert it. You can usually use the same duct system. This is less expensive than installing a new forced warm air unit and adding a conversion unit later on.

The complete unit handles both summer and winter air conditioning. It supplies cooling, dehumidifying, heating, air circulation and filtering. A simple control shifts it from cooling to heating and the same thermostat sets the temperature level for summer and winter. It is available either with air-cooled refrigeration using no water, or water-cooled, and for heating it burns oil or gas.

5. If you have an old gravity warm air furnace with warm air pipes coming off in all directions, your best bet is to replace it completely with a unit which will provide winter and summer air conditioning. Conversion is not recommended. Some modification will be necessary in the ducts and outlets, but you would need this if you installed a new forced warm air system.

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Portable Air Conditioners For Small Rooms - What Are the Benefits?

If you don't have a central air conditioning system at your home, it doesn't mean you have to suffer from summer heat. You can use mobile portable air conditioner instead. There are many advantages to using a portable cooling system, especially if your room is small.

Advantages of mobile air conditioner

Portable units are great for people who work from home. Even if you have a central cooling system, it will not be energy efficient to switch it on, if you spend most of the day in your home office. A window unit would work there, of course, but if you don't have one yet consider the cost of installation. Mobile air conditioning unit cost pretty much the same as a window one, but there are no installation fees.

Also as the name suggests the portable cooling system could be moved around, which means that you can use it in the study during the day and in the bedroom at night. And while cooking dinner, it can be easily moved to the kitchen.

Another advantage is that since a portable unit doesn't need to be installed by a professional you can buy it and use it as soon as it is delivered.

And the biggest benefit of a portable air conditioner is its energy efficiency, it can really save you a lot. When compared to split systems or central units, it might seem that portable cooling systems are less efficient. But because of its mobility, you can move your unit closer to where you sit, instead of cooling the whole house. And that gives you great savings.

Disadvantages of portable air cooling systems

The biggest draw back is the noise. Compare to split and central systems portable machines a bit noisy. When looking for a particular model, check its noise rating, as some units are quieter than others. If the noise is an issue for you, visit a couple appliances stores and try it for yourself. They often have some units on display that are connected.

Another thing is that even though a portable unit doesn't need any installation it has to stand not too far from the door or window because it has an exhaust house to go outside.

Cooling capacity of portable air conditioners

As already mentioned mobile air conditioners are best for small rooms, however different models have different capacities. For a 16 square meters room an 8000 BTU unit is enough, if your room is bigger go for a 1000 BTU one. It also makes sense to invest into a machine with slightly bigger capacity than you need just in case. Then you can simply use it on lower settings.

There are may brands of portable and mobile air conditioners such as Carrier, Mannix, Daikin, Hitachi and LG. Before you settle for a particular brand and model, read reviews for this unit online.

A mobile air conditioning system could be great if you spend your day working at home or simply do not have a central system in your place. It is inexpensive, convenient and energy efficient.

Reference :
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