I've had 4 boiler estimates and was wondering which was the better boiler. 1 was for the Peerless PF 80 for $4700.00 and 3 were for the Lochinvar KBN 081best estimate was $7300.00. Any input on which is the better brand?

I have Lennox boiler with three zones and I had to replace one of the zone valves because it started leaking last spring. I attempted to bleed the system and I have successfully removed the air from the two lower zones but I can't seem to get their air out of the highest Zone. I have done this once before and I didn't have to much trouble that time. I have tried bleeding it two different ways I turned the power off to the Furnace then I connected a hose from my utility sinks faucet to the lowest zones drain valve and then I connected a drain hose to the middle zones drain valve which I ran to my sump so I could watch the water stream to know when all of the air was removed. I had all of the thermostats off and I manually opened the corresponding Zone Valves then I turned the Utility Faucet on and monitored the water coming out of the drain into the sump until no air was present then I closed the middle zones drain valve and then the lowest zones drain valve then I shut the water off at the sink. Next I connected the water supply to the Middle Zone and a drain hose to the upper zone and followed the same procedure. However when I turned the Furnace on and turned the heat on in all the zones I only had heat in the middle and lower zones. I am not sure what I should be doing with the water supply valve and its regulator while I am bleeding the air out. Here is a link to some Pics. [url=http://www.photobucket.com/lennoxboiler]Pictures by jsob13 - Photobucket[/url]