VEVOR Heat Exchanger Water to Air, 20"x 20" with 3-Row 3/8" Copper Ports, 242 Aluminum Fins Heat Exchanger for Outdoor Wood Furnaces, Residential Heating and Cooling, and Forced Air Heating

Can A fan be added to this heat exchanger to facilitate faster loss of heat?

Is it possible to connect several heat exchangers to extend heat to four floors? I like to speak with someone who can explain me how this works. Thanks