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Air Conditioning Terms |
Brief
description |
More
Information |
| Heat
Pump |
A heat
pump is simply a cooling only air conditioning system with the addition
of a reversing valve, this is normally in the outdoor unit on the split
type unit. When heating is selected the complete refrigeration system reverses,
"the indoor unit gets warm and the outdoor unit get cold" If you
are selecting an air conditioner as a "heating device" it is always
wise to oversize the equipment to allow for low outside temperatures. Disadvantages
! Duty falls off as outdoor temperatures drop. Advantages Probably the cheapest
method of heating. |
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| Cooling
Only |
A
standard system that will just cool and dehumidify, lots of people select
a cooling only unit when they have central heating installed and they
simply want to cool a single room like a bedroom for example. Most mobile
units are cooling only, some have a built in electric element for heating,
this is not to be confused with a heat pump. For the small extra cost
involved our view is you might as well buy a heat pump type and use on
cool only. |
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| What
Size ? |
There are
basic calculations that you can use to determine the size of airconditioner
you need, we have our own online calculator that will give you a "ball
park" figure for a few different applications. This calculator will
not be accurate for someone with a south facing conservatory, glass all
round, no blinds, and 35 degree direct sunlight for 6 or more hours, no
calculator will do this. But for your standard living room , bedroom, conservatory
etc. , it will be near enough. Click on calculator link |
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| How
Noisy ? |
Most reference
to noise from manufacturers will be in decibels (d(BA) With packaged units
all the noise is wherever the unit is sited. With split units you have the
indoor noise and the outdoor noise. Indoor noise on split types is just
the fan, this noise can be as low as 23 d(BA) on some of the more expensive
units, however, we have found indoor noise below 30d (BA) on cheaper units
so it does not automatically mean more you pay quieter you get!. Outdoor
noise is greater on split types because the condenser also houses the compressor.
Most systems under 5kw the outdoor noise cannot be heard from 4 or 5 mtrs
away. |
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