DIY heat exchange adapter for flexible duct

[Turbo_B]

This is my solution to installing a hydronic heat exchanger in soft ductwork.
This is a pair of 16" round to 16x18" rectangle duct transitions, a metal wall stud from the orange hardware store, some rivets, silicone caulk, and hanger strap. Mix with a few hours of your time and BOOM - duct exchanger!
Hopefully this will help someone else with their hydronic heat exchanger installation.

 

[sloeffle]

Impressive work. Do you have any shut off valves near the HX? My HX is in my basement (lowest point) and I put some in front of my HX in case I needed to ever swap it out.

 

[bigealta]

This is my solution to installing a hydronic heat exchanger in soft ductwork.
This is a pair of 16" round to 16x18" rectangle duct transitions, a metal wall stud from the orange hardware store, some rivets, silicone caulk, and hanger strap. Mix with a few hours of your time and BOOM - duct exchanger!
Hopefully this will help someone else with their hydronic heat exchanger installation.

Are you heating the water with a boiler or something else?

 

[Turbo_B]

Impressive work. Do you have any shut off valves near the HX? My HX is in my basement (lowest point) and I put some in front of my HX in case I needed to ever swap it out.

I have valves at the water stove. I put in a bigger HX when I took the pictures . I lost about a gallon when I removed the original HX - but I caught it with a cut-down 5 gallon bucket.

 

[Turbo_B]

Are you heating the water with a boiler or something else?

I have a Heatmor 200 water stove.