Personally I would not want the forced air. For two reasons:
1) I do not want to heat the whole coop - I just want something that chickens that are molting or feeling poorly can get near to take the chill off. The flat panel heaters already available meet many of those needs
2) My chicken coop...
Welcome to BYC.
In a heater, I would want:
- solar and rechargeable
- no exposed fire hazard
- not too hot to touch
- no moving parts
- options to fix to floor, wall, or hang