![I had a new oil furnace installed a few weeks ago. Is there a problem with this flue pipe? I've read you shouldn't reduce them : r/HVAC I had a new oil furnace installed a few weeks ago. Is there a problem with this flue pipe? I've read you shouldn't reduce them : r/HVAC](https://preview.redd.it/0gzm4qddmp341.jpg?width=640&crop=smart&auto=webp&s=2e8fd02bc7c5e8b140897cc841fe0bac49619d97)
I had a new oil furnace installed a few weeks ago. Is there a problem with this flue pipe? I've read you shouldn't reduce them : r/HVAC
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