I have a bore scope and use it to determine how much my chimney needs cleaning and the condition of the triple wall and single wall pipes. Plus other things such as inspecting engine innards, etc.. Once I clean the chimney, I stick the scope in and see how clean it is or if I missed a spot.
Now, I know this works in stove pipes and you can take pictures on your phone with the scope, save them to google albums, share the photos, or upload them to a forum such as this one. Because I have taken pictures of my pipes and saved them to albums.
Which is the only reason I mention this product, I know it works for me, but, it DOES deserves to have more one star ratings then five star ratings. So, buyer be ware and all that.
I own rugged phones and it only worked with my SONIM XP8. You would think a company that is suppose to find contractors as their main target audience, would make sure their product worked with as many rugged cell phones on the market as possible. I guess not.
Klein Tools Borescope Camera for Android Devices ET-16
Provide an essential update to your appliances with the selection of this Klein Tools Borescope for Android Devices.
www.homedepot.com
If you buy a bore scope, you can stick it above the baffle and see what condition the top of the stove is in and the baffles. If the top of the stove (the bottom of the steel), the steel plate itself is de-laminated, then yes, you need a new stove. This is handy for scoping out heat exchangers too.
I most recently bought a wood stove at auction ($25) and it was so trashed, I only kept the cast steel doors and junked the rest. All the heavy cast stuff was fine, but, all the lighter gauge metal was holed or just fragile that connected the flue system and such. My scrap metal guy was glad I bought a 250+ pound paper weight :-D
Your heavy metal box might be intact, but, if the flue controls (paddles, doors, etc.) are holed, then that might explain your loss of heat.
Even if you do not know what you are looking at, I am sure out of the 100s that see the post, someone will know what is up.