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1-central or (mini central) or MSU or chiller is according to heat load.
2-linear diffuser or square or register according to the importance of the area.
3-duct size according to the application(residential or public or industrial).
4-drain system according to the importance of the drain area (free in the air or exposed drain pipe or drain pipe hidden)
Selecting an air conditioner for your home is a big decision. It’s an important investment today. It will play a key role in your home energy expenses for years to come. And when the summer heat is at its worst, you’ll want your family to have the best, most reliable cooling comfort possible. Here are a few things to consider. The energy efficiency of central air conditioning units are rated according a seasonal energy efficiency ratio (SEER). The higher the SEER rating, the more efficient the system. Individuals may use the SEER rating to obtain energy efficiency tax credits. The rating requirements vary between the single package and the split system.
