Does a DIY Fireplace Heat Exchanger Actually Work? (Real Results)

Here is my original DIY fireplace heat exchanger build video: https://www.youtube.com/watch?v=bdIfsU3-Oks

4" Centrifugal Fan: https://amzn.to/4rShJK6
Firewood Grate Deep (in video): https://amzn.to/4pJZt5a
Firewood Grate Shallow: https://amzn.to/3MCK1sI
Creosote Log: https://amzn.to/3MGIZwa

I built a fireplace heat exchanger. Does it actually work? Two months ago I built a custom DIY fireplace heat exchanger using 1-1/2" black gas pipe to capture wasted heat and turn our closed-in porch into a four-season room. Since that video, I’ve had a ton of comments and questions — so here’s the full update.

In this follow-up I:

-Answer the most common viewer questions (safety, airflow, PVC/Fernco concerns, fresh air, dampers, inserts vs wood stoves)
-Show how the exchanger is holding up after ~60 days of hard use
-Explain why airflow / static pressure is the real key
-Upgrade the fan to a 4" centrifugal (squirrel cage) fan and demo it in action
-Show real-world temperature checks (pipes hitting 400°+ and back pipes often 700–800° when it’s really cooking)

This setup is AIR ONLY — no liquid heat exchange — and it’s built from readily available parts from Menards / Home Depot / Lowe’s. Total cost was roughly $300–$350 initially, and the upgraded fan was about $170 (10-year warranty). Comparable factory units that didn’t fit my fireplace were $700+.

If you’ve got more questions, drop them in the comments — I’ll keep updating this project.

#fireplace #woodheat #heatexchanger #diy #homestead #heating

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This video is for entertainment and informational purposes only. Fireplaces, heat exchangers, and combustion systems can be dangerous. Do NOT copy this build without understanding local codes, safety requirements, and proper materials. Never use galvanized pipe or toxic materials.

Видео Does a DIY Fireplace Heat Exchanger Actually Work? (Real Results) канала Indy Farm Life