[JustADude]

Home is about 3-4 yrs old. Unvented firebox is on outer wall, but well sheltered. Musty smell appears to be coming from lower vents. It is a noncirculating model and has not been run for the year.

I removed a the front refractory panel and control access cover and looked into the lower vent area. I did not notice anything unusual, but could definitely smell a musty type smell.

We are on a slab house and this is in the elevated portion of the slab.

Are there any suggestions about how to reduce or eliminate the musty smell?

Thanks for any feedback and insights.