heater core construction

Joined
Feb 14, 2005
Messages
129
Location
Connecticut
Are heater cores soldered with lead? Would water circulated through an automobile heater core (for warming an RV) be safe to use as potable water?
 

Kestas

Staff member
Joined
Jun 4, 2002
Messages
14,037
Location
The Motor City
It would be as safe as the water coursing through my copper pipes, joined with solder... probably the same 60Sn-40Pb composition solder. Of course, some automotive heater cores may be something other than a soldered copper. They may be a newer design that uses solder with no lead or they may be made of aluminum.
 
Joined
Oct 10, 2004
Messages
1,979
Location
Houston
probably made of aluminum on anything made recently, Cu is too expensive. Even if it is soldered w/lead, as Kestas said it's of such a minor amount as to be inconsequential unless you are an environmental worrywart. But it's more likely a higher temp solder than 60/40, with even less lead and possibly some silver. You are going to drink water that has circulated thru the heater core? What is heating the core? Is this merely an old coil that you now wish to use in a potable water system or a brand new coil to be adapted for this purpose? What does the coil do in the potable water system?
 

Kestas

Staff member
Joined
Jun 4, 2002
Messages
14,037
Location
The Motor City
Copper is poisonous only if the fluid is acidic. That's why you find copper cookware plated with nickel where it contacts the food.
 
Top