Профессиональное развитие будущих инженеров-строителей средствами иностранного языка: Лексический практикум по английскому языку. Трубникова Н.В. - 110 стр.

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Most portable air conditioners range from 29" to 36" and weigh no more
than 85 pounds. Prices usually range from a little under $300 and can go up to
$700.
Portable air conditioning is the perfect solution for:
Those that are renting an apartment and need more of a con-
centrated cooling system.
For a house or apartment that you don't want to put nails or
holes in as you would with an outside air conditioning unit.
For senior citizens or the physically challenged who want a
simple solution to their air conditioning and central air condition-
ing needs.
Oddly shaped windows or areas that are not receiving enough
air circulation.
Industrial or commercial air conditioning needs, in specific
areas (such as computer rooms, etc.)
Heat pump
A heat pump is simply an air conditioner that contains a valve allowing it
to let you decide whether you want heat or cool air to circulate throughout your
home. The heat pump valve can be adjusted based on your specific needs - pro-
viding you with a cool breeze or reversing its flow of Freon, located in the air
conditioning refrigerant, and delivering a toasty feel to the room. The heat
pump is an electric component that has come a long way from the proprietary
gas furnace.
Most people are at least familiar with heat pumps and how it can be a
cost-effective way to provide the very best in central air conditioning. Depend-
ing on your climate and your heating and air conditioning needs, choosing an
advanced heat pump system can range anywhere from $2,000 up to a top-of-
the-line, more popular brand that is around $8,000. Some of the best heat
pumps can be very expensive but are very quiet and are sure to give you more
"bang for your buck".
Maintaining your heat pump system so it can last you years, comes from
taking care of the entire air conditioning system and air conditioning parts.
Cleaning the air conditioning air filter at least once a month properly (some air
conditioning systems now even have disposable air conditioning filters), doing