What are the primary components that i need to build a dehumidifier,and how much do they cost?

Question

What are the primary components that i need to build a dehumidifier,and how much do they cost?

Answer 1

For a desiccant dehumidifier, all you need is the desiccant and perhaps a fan.

For a refrigerated dehumidifier, you need a compressor, evaporator, condenser etc. which will probably cost about as much or more than a ready made dehumidifier, though there is a possibility of using a small air conditioner which might cost a little less than a purpose built dehumidifier.