air in baseboards

[Mark Santalucia]

I have a ranch w/baseboard heating.I can bleed the system of air, but within 3 weeks air is again in the pipes.There are no leaks that I can see.I have installed a new pressure reguator and backflow preventer to no avail.I would really appreciate some advise. thank you

[Anonymous]

: I have a ranch w/baseboard heating.I can bleed the system of : air, but within 3 weeks air is again in the pipes.There : are no leaks that I can see.I have installed a new pressure : reguator and backflow preventer to no avail.I would really : appreciate some advise. thank you I have a similar problem with a two story house. I have uncovered some useful info by checking for web sites of manufacturers of hot water heating equipment (I found the names on my furnace & accessories). Amtrol was the most interesting site: http://www.amtrol.com/products/pressrelease/files/4000DS.pdf and http://www.amtrol.com/extrolexp.htmlThey make automatic air purging valves, and they offer info files for downloading. Good luck.

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