Completed Homemade Propane Forced Air Heater

This is the completed (as far as I plan on completing it) propane forced air heater. The fan is from a kitchen exhaust vent hood. The rest is just various pieces of 6" and 8" ductwork and 1/4 galvanized piping. The final piece to get the flame right was the polyurethane can in the back-center of the inner tube. In this run I estimate it to be putting out around 100000 BTU, but by reducing the amount of air bypass I can get it up to at least 200000 BTU, limited only by how much gas the 20 lb. cylinder will put out. For those interested I made a forum thread covering the process. backyardmetalcasting.com



http://www.youtube.com/watch?v=7FRvnCa7v3Q&hl=en

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Forced Hot Air Furnaces : Troubleshooting and Repair

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Great book! Good information on forced hot air furnaces. Helped me determine how to change fan , but along the way i also discovered the furnace has other problems and probably not worth fixing.

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Best Forced Hot Air Furnaces : Troubleshooting and Repair Details

Tutorial Forced Hot Air Furnaces : Troubleshooting and Repair Description

* Complete Troubleshooting & Repairing guide to hot air furnaces
* Complete operation, maintenance, and repair
* Covers gas, oil, and electric forced air systems
* Includes flowcharts and highlighted tips and solutions to common furnace problems

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