![What is this vent thing on our boiler? It has never closed even partially and it smells like oil burner exhaust when the furnace kicks on. : r/whatisthisthing What is this vent thing on our boiler? It has never closed even partially and it smells like oil burner exhaust when the furnace kicks on. : r/whatisthisthing](https://external-preview.redd.it/Ug7LEUZKDGkri8lNMrSeYiKBZkcpYfGG1Bow-k9z8k4.jpg?auto=webp&s=6f58d93f0cbdb3b92be59168ddd5e7ed29b74453)
What is this vent thing on our boiler? It has never closed even partially and it smells like oil burner exhaust when the furnace kicks on. : r/whatisthisthing
![Oil boiler leaking fumes/smoke? Owner insists on NOT calling professional Pictures inside. | Terry Love Plumbing Advice & Remodel DIY & Professional Forum Oil boiler leaking fumes/smoke? Owner insists on NOT calling professional Pictures inside. | Terry Love Plumbing Advice & Remodel DIY & Professional Forum](https://terrylove.com/forums/proxy.php?image=http%3A%2F%2Fi.imgur.com%2FNVpzLCW.jpg&hash=6e0a7783ee865288bc46a9184b2928dc)
Oil boiler leaking fumes/smoke? Owner insists on NOT calling professional Pictures inside. | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![Damaged oil burner heat exchanger? Last winter started putting soot and fumes into the forced air system. Landlord assures us it was only due to it being dirty, but it's been cleaned Damaged oil burner heat exchanger? Last winter started putting soot and fumes into the forced air system. Landlord assures us it was only due to it being dirty, but it's been cleaned](https://i.redd.it/hwpk1738y9c81.jpg)
Damaged oil burner heat exchanger? Last winter started putting soot and fumes into the forced air system. Landlord assures us it was only due to it being dirty, but it's been cleaned
![Oil boiler leaking fumes/smoke? Owner insists on NOT calling professional Pictures inside. | Terry Love Plumbing Advice & Remodel DIY & Professional Forum Oil boiler leaking fumes/smoke? Owner insists on NOT calling professional Pictures inside. | Terry Love Plumbing Advice & Remodel DIY & Professional Forum](https://terrylove.com/forums/proxy.php?image=http%3A%2F%2Fi.imgur.com%2FwkYdszI.jpg&hash=fb9bdb55b0d9b6d5959086ffcd76a6bf)