I have oil heat, hydronic baseboard. Three zones, the bed rooms are on one zone. I plan to replace all the baseboards on this zone and on the one in the basement. Yesterday I did one bedroom..., started the system back up and couldn't get any heat, I bled the system an couldn't get any where with it, what am I doing wrong, HELP!! :confused:

We have a central furnace/AC with an electrostatic filter setup. My wife suffers from allergies, so we're trying to find some solutions to air cleaning. I'm looking for thoughts on the 3 big filtering systems as mentioned in the subject. What I've found so far is: - A Sharper Image ionizer placed in the bedroom does help at night. But another website pointed to many problems with ionizers - namely that they produce way more ions than exist in nature and this could be harmful. That site also said it could dirty up the walls even with the filtration system since the filter could only pull in air close to it. - A HEPA portable filter may work, but of course these are typically noisy and expensive to operate. And we'd need many in the house to keep it all cleaned. - A HEPA filter in the furnace would work for the whole house, but I don't know if there are any that can just replace the mesh filter that comes with electrostatic units. Plus I believe HEPA requires a strong fan because of significant pressure drop across the filter - don't know if the house furnace is up to it. Any thoughts? Thanks in advance...