Generator Exaust

I use the rain gutter down spout set up exactly as Ivylog has pictured. It does work, even on my onan. My only difference is that I modified a couple of sliding window locks by changing out the thumb screws for small eyebolts and I clamped them to the upper rain gutter to put a bungee cord to hold the upper end in place, and my 10' pipe gets 18" over the roof height. With the gap that Ivylog shows and is also used on the Genturi the heat in the downspout will get warm but I can keep my hand right on it even after running for 30 minutes. That gap allows outside air to be mixed with the exhaust air and that helps keep the pipe cooler. You can test to make sure you have the right gap by letting go of a small piece of tissue paper near that gap and if it gets sucked in and blowes out the top then it is working right. If the tissue won't go up the pipe then the exhaust isn't either and you need to adjust the gap between the exhaust pipe and the genturi/downspout pipe.

Per the Onan manual: they haven't found one of these that work correctly with their gen sets and raising the exhaust will cause exhaust fumes inside the coach. FWIW.

The Gen-turi does exactly what it says it does, and other than while underway, we always use ours when running the generator. We're very pleased with how well it works.

Yes it does what it says it will and when at a rally or the race track it's a must. I tried making one out of 2" PVC and this metal 90 degree sweep BUT in hot weather the PVC got hot enough to bend. For one night I'll just use the sweep to make the hot air go up or forward depending on the wind.


So, I GOT CARRIED AWAY and spent $15 on this one. I made it out of alum 2"X4" gutter down spout and a 90 degree elbow. Already designed to slip together and cutting the 10' into two 5' is easy enough plus it makes it easy to store. 10' gets it above the roof.
By having this large of a air gap it lower the temp of the up pipe by 15 degrees to 120F.

The 4" suction cup came from Harbour Freight ($4) plus I had the white channel that slips into the joint. Not that it weighs all that much but the suction cup will support all the weight so it's not going to hurt the gen exhaust.

Putting a little paint on the two joints helps in putting it together. Just made another one for a friend and it cost $17. Today it may cost $20.

You can make your own. DIY Gen Turi.

There are other sites, do a Google search.

wannabegone wrote:
With the Texas heat we are using our on board generator more than I thought we would to run the a/c. The exhaust comes directly out of the back of our Lance 1181, right beside the entry door. I've already decided to install a 90* pipe and direct the exhaust out the curb side of the camper. I have been looking for an extension set up to run the exhaust up. I can fabricate a 90* and pipe to clear the roof, not sure about the brackets since i really don't want to put holes in the side of the camper.
I do keep coming across this Gen-Turi system. Has anyone used this setup? If so were you or are you happy with it? Does it do what it says? I have found the Camco kit for as low as $119 but not sure it is worth it.

I use that same set up on my Gen set for the exhaust I have a Class C and the exhaust is on the drives side but it seems to find it's way into the rear of theRV and set's off the carbon monoxide alarm when I do not use the Gen-turi Exhaust Pipe, unless the wind is blowing other wise I would say it was well worth what I paid for the kit in 2008.
Also if you can find it for that cost buy it. I paid just under that with the shipping from CW.