High altitude furnace recomindation

[30-30remchester]

I have a small cinderblock shop that has a small office attached. Living at an elevation of 8,000' many furnaces have an oxygen depletion sensor that won't let the furnace work above 4,000' maximum. The office is small but in need of heat. I was thinking of a free-standing vent free or a small wall furnace but everyone I look at online either lists lower elevations or won't disclose if they have an ODS. Any advice would be appreciated.

 

[Jackfre]

“Small”! How small? A Rinnai EX-08, 11, 17, 22 or 38 will work up to 10k+ but they do have to be de rated. They are vented and you have to follow the de-rating schedule based upon altitude.

 

[4x4Pete]

How about the GJ favorite, the mini split heat pump?

 

[dcg9381]

What are your available "fuel" sources?

I use propane heaters, but they have the dreaded ODS that you're talking about.

I've been seeing quite a few people doing cargo trailer conversions and many are using "diesel heaters". Apparently the Webasto Evo 40 is rated to 18k feet. These are "new" to me, but apparently fit the bill.. Many people are buying them straight off the boat from china.

 

[930dreamer]

A ceramic floor heater warms up our 20'x20' media room that's insulated.

 

[30-30remchester]

I have natural gas. I have checked out the above mentioned furnaces. I need a minamum of 25,000 BTU's. I have several inquiries awaiting replies.