If you go to Google and put in Atwood He-601 control board you can find many parts that will replace your control board.

Emery Stora

Sf-35 is a good replacement. Lots of people like those
In order to have more cabinet space then the taller units. But they are a little wider. But also depends on your coach model and year.

However none will match the vents. You have to be a little creative in the install.

Hi Larry Not to answer your question but you should think about having your carb send to Canadian carb in bc for a rebuilt and Dick   Patterson's for a rebuilt ignition.   Have done both with great results.  I live in Squamish. Bert

What we have been doing lately. Is using high temp flexible silicon hose bought from mcmaster carr to get from the suburban intake and exhaust vents up to the exterior vents of the old sol aire.

1 method is to seal up but leave the exterior crome cover on the forward vent. And just cut a new hole below the rear sol air vent to better match. Or use a little more of the silicone hose to avoid other holes. But that requires a little creative way of cutting down the suburban exterior vent trim.

By removing the lower couch, the furnace goes in and out. You have to be creative to mount the rear hoses up to the suburban plenum.

I was just told recently that the sf series uses more 12v power then the suburban NT series.

The NT series I believe can be installed a little easier. And it is not as wide, but 2x ad tall as the sf series. And will go in and out of the cabinet door.


I installed a sf-30 last fall. I had to have it on a major tilt to match the curved wall. Since then I have info on how to mount with the mcmaster silicone hose and will be remounting my sf-30 flat to floor.

I am helping another owner mount one this week. And once his is done, time to re do mine.

Do you have any idea what the exhaust temperature is or could you measure it? How hot does the hose get on the outside? I decided to go with two Pelonis ceramic box heaters rather than replacing the furnace given our limited use cases for the furnace. As I mentioned on FB, my old furnace is a Duo-Therm with the exhaust over the intake. The Suburban NT doesn't match up to the holes (holes are too low), and I neither want to cut a big hole in the side of the coach nor go with the SF and rely on silicone hoses not approved by the manufacturer. That seems a bit risky, given the potential for CO to enter the cabin if there's a leak. Side note, I thought all furnaces would have the exhaust above (or next to) the intake since heat rises, but the SF has the exhaust below the intake. Weird.

Cutting the exterior wall isn’t that big of a deal plus you have the
advantage of being able to remove the furnace for repair or maintenance
without dismantling the interior and cabinets. Even with the angled Mount
pan to match the curve the suburban I installed took up less space than the
Sol-aire it replaced.
I agree on the silicone hoses. The possibility that a hose could become
dislodged without my knowledge would concern me.

Sully