Just had the local Munchkin authorized rep in yesterday to "convert" my natural gas 140 to a propane. HTP indicated that I had to use an authorized rep. for the conversion, which I'm OK with, to get the warranty registration, etc.

My question is, what do I expect form this thing now that its up and running? Rep indicated that they have since moved away from these products as they have had "too many issues" with the Munchkin. Any opinions out there? Good, bad, indifferent?

Unit fired up easy enough and I guess I'm committed at this point to making it work. Just looking for some opinions on what to watch out for.

Well you mean the supplier moved away from them due to problems, not the rep.

You shouldn't expect a lot of problems. Munchkin took a lot of arrows as they kind of pioneered the trail, sort of speak. It took a strong supplier in hydronics to sell the units. It's not enough to just sell the boiler, you actually have to know all the ins and outs. Let me assure you though, 90-95% of the problems are installation and set-up related. They've addressed several issues over the last couple of years.

You are correct in that it was an installer and not a HTP rep. The installer indicated that they had many "issues" with only some units, but that the issues were enough that they felt they needed to go another direction. It did not sound like they had really found a better direction yet as they had only installed a few of the "other" product.

Biggest thing I had concern about was the issues that he indicated occurred requiring almost yearly tear-apart and maintenance on the actual interior just to keep it functioning. Hopefully I will not see the issues.

Yeah, that will happen if:

A) Its sitting directly on the floor, no elevation.
B) Its pitched forward.
C) The condensate line is run 100 miles.
D) The intake is sucking in lots of dust and/or drywall dust during construction.
E) Crappy gas leaving deposits.

Basically, it usually takes a combination of a few of the things mentioned above. Wall hungs eleviate a lot of that. A boiler stand does also. The new units have leveling legs.