I have a boiler system and wanted to buy and air seperator. I am not looking to spend a lot of money, but don't want something cheap. I found a Gossett and Bell enhanced air sperator, but it looks like it cost a lot of money. Can anyone recommend a good company or model that will do the trick. Thanks,

A contractor put one of my hot water heating pipe drops in an outside wall during a remodel. It's an old house, and it now dawns on me that this is a not a great idea. The drop is between a window and a door, and I'm not certain that the wall will remain above freezing. I may move the pipes eventually, but I'm looking for a quick solution to avoid possibly freezing the pipes. The house is from the 1850's, and I'm not trusting the wall to be sealed and warm during cold spells. Is it OK to rewire the boiler so that the pump circulates all the time in the winter? It's a Dunkirk boiler with a Taco 007 pump, and it is a true two pipe system, with oversized piping (2" supply for about total 110' feet, five 1-1/4" drops for a total of 120'). I opened up the control box, and it looks like I could just wire the pump directly to the line power, and disconnect it from the control box switching. Some of the cost of running the pump might be made up for by my losing less heat in the basement to hot water stranded after the boiler shuts down, which is pretty costly considering my fat pipes. It looks like the pump is pretty inexpensive should it burn out prematurely. Is there any problem with my logic? Any reason I should use antifreeze or some other solution, so to speak? Any suggestions about the whole issue? Thanks, Josh