Home Depot was selling off the Generac GP5500 last year so I bought one. I didn’t have a Shed or a Garage to store it in so I used a Suncast GS2500 to store it in when not needed.
After a while I thought about what it would take to run the generator inside the Suncast and this is what I ended up with after looking around the internet for ideas.
http://youtu.be/3s6IcmKv8XI
The issues to overcome were getting air in to the Generators engine, getting the heat and exhaust gases out.
I found a 10″ shuttered fan by Fantech (2SHE1021) on sale, but I’d recommend something larger if you plan on doing something similar. Amazon.com has the Fantech 12″
for $117 (cheaper than the 10″).
2″ Attic Vents (SKU # 388719) were mounted in the shed wall where the Generators Air Filter was located and I put the Fantech on the opposite side.
To get the exhaust routed to the outside I used various pieces from the HVAC Aisle (Item numbers are for Home Depot).
Speedi-Products 4 in. Round Galvanized Wall Vent with Spring Return Damper
Model # SM-RWVD 4 Internet # 202907283
(Photo is of an Aluminun one)
Frost King 3 in. x 25 ft. Foil Backed Fiberglass Pipe Wrap Insulation
Model # SP42X/16 Internet # 20226232 Store SKU # 710539
Deflect-o 8 ft. Semi-Rigid Duct
Model # A038/16 Store SKU # 185868
Master Flow 3 in. Round Duct Cap
Model # DC3 Internet # 100197348 Store SKU # 259913 Store SO SKU # 755578
The Magnet in the video below is 5685K33 from McMaster Carr.
http://www.youtube.com/watch?v=TbXiElx5J5s
To monitor the internal temperature I use a themometer from WalMart, its meant to display the outside and inside temperature but has a wireless remote sensor which I put inside the housing and can see the temperature on the Display in my House.
I also added a high temperature cut off to the built in low out cut off. That way if the fan stops working the temperature will increase but once it gets to the activation temperature of the Normally Open switch I purchased from eBay it will short the ignition coil to ground which cuts the engine. I have mine set to 50 Celcius, but comments on my video suggest I should go higher.
http://www.youtube.com/watch?v=KSTIbvAZlu0