Mark42
Fleet Admiral
- Joined
- Oct 8, 2003
- Messages
- 9,334
I have baseboard heating in my home. One zone tends to freeze where the pipe runs through a raised fireplace hearth. This usually happens when the outside temps reach single digits (like last night it was 4*). <br /><br />I want to add some antifreeze to the system, but have never dealt with antifreeze in a heater before. I figure there are about 600 feet of 3/4 copper pipe (including finned) on 4 zones. The boiler is oil fired with "tankless" coil for hot tap water.<br /><br />I have these questions:<br /><br />- How do I calculate how much antifreeze to use?<br /><br />- What is the best method of adding it? <br /><br />- Will antifreeze noticeably reduce the heating efficiency?<br /><br />Thanks,<br /><br />Mark