This video shows the solar thermal air heater and collector after replacing the plastic heat absorbing material with three type of air filters. The plastic type tends to give off chemical gas which plants do not like.

Three types of air filters were used. For the smaller air heat collecting section on the right-hand side, I used this type of air filter bought from Rona (production link provided):

For the larger air heat collecting section on the left side, I used this type also bought from Rona (production link provided):

For the rest of the sections (air entrance and exit channels), I used this type that I bought from HomeDepot (production link provided):

All filters were painted black with a high heat paint.

Categories: Solar

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