Chimney Balloon is deflating!

Q: Jason, Your customer service has been top notch, but I’m still not having good luck with the Chimney Balloon. I purchased one a year or two ago. Over time I noticed it had become deflated. I’ve not blown it back up a number of times in the past week. It must have a leak somewhere as it will not stay inflated. Do the valves develop leaks?

Anyway, I’m just a bit frustrated and wishing this worked better than it does. I’m not sure there’s anything to be done about it, but I needed to vent (no pun intended). – SR

A: Dear SR,
There are some applications that are just not hospitable to the Chimney Balloon. I’m afraid this may be one of those applications.

However, we now have a product that is quite a bit more durable than the Chimney Balloon, because it is a dense-backed wool pad instead of an inflatable bag. It is called the Flueblocker. You can see it at

Judging by your photos and the Chimney Balloon size you purchased before, my bet would be on the 14×36 Flueblocker. The length will be perfect, but you might have to trim a bit off the depth. I would try fitting it full-sized first to see if it is a pressure fit, and then trim down from there if needed. Just like a haircut, you can always take more off, but you can’t glue it back on.

Here is a link to that size:

– Jason[