- May 21, 2009
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designed this and will start building the prototype this weekend. It is planned for 5,000 BTU/hr. with a 90%+ efficiency. Burner and control box will be outside the coop and the radient pipe will be terminated outside also. Design is based on existing tube heaters used in many warehouses.
![32069_coopheater.jpg](https://www.backyardchickens.com/forum/uploads/32069_coopheater.jpg)