Heat Exchanger Core

Assembly

No photo yet. Seen one of these? Suggest a photo.

Coaxial copper tube assembly with high surface area transferring heat from drain to supply via conduction.

Direct parts	5
Total parts	5
Used in	1 assembly
Class	Assembly

Report a problem with this BOM

Coaxial copper tube assembly with high surface area transferring heat from drain to supply via conduction. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Heat Exchanger Core parts and their functions

5 top-level parts · 5 parts in total · full bill of materials below

Heat Exchanger Core parts diagram: 1 outer copper tube, 2 inner copper supply tube, 3 spiral spacer insert, 4 solder & braze joints, 5 heat exchange tube length. 5 parts in 5 top-level items. — Heat Exchanger Core parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Outer Copper Tube	1×	1.5–2 inch copper tube serving as drain water passage, soldered fittings
2	Inner Copper Supply Tube	1×	3/4–1 inch copper tube wound inside outer tube carrying cold supply water
3	Spiral Spacer Insert	1×	Plastic spiral insert maintaining inner tube position and turbulence
4	Solder & Braze Joints	1×	Brazed and soldered connections between tubes ensuring leak-free operation
5	Heat Exchange Tube Length	1×	Typically 3–5 feet active heat exchange length per shower fixture

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour

product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Heat Exchanger Core

5 top-level lines · 5 rows shown · 5 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Outer Copper Tube	drain-heat-recovery-outer-tube	1×	1	·	part
2	Inner Copper Supply Tube	drain-heat-recovery-inner-tube	1×	1	·	part
3	Spiral Spacer Insert	drain-heat-recovery-spiral-spacer	1×	1	·	part
4	Solder & Braze Joints	drain-heat-recovery-solder-joints	1×	1	·	part
5	Heat Exchange Tube Length	drain-heat-recovery-tube-length	1×	1	·	part

Something wrong in this list? Report a problem with this BOM.

Where the heat exchanger core is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Plumbing & Sanitary 1 Drain Water Heat Recovery Unit

Used in 1 assembly

Drain Water Heat Recovery Unit

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks