I have a 25 year old Burnham boiler (hot water system) with 3/4" piping and Electrozone zone valves (3 valves). It's my understanding that parts are no longer available for my zone valve system.
So here's my dilemma: Do I just leave it alone until it breaks and deal with it then? What happens if it breaks in thh middle of winter? I'll pay an arm and a leg because it will become an emergency.
Or do I replace it during the summer at my leisure, even though everything is working now.
And then if I do replace, should I replace only the zone valves or just replace the whole boiler? I got one estimate (need to get more) for $2100 to replace all the controls, or $4500 to replace the entire boiler with brand new everything. Alternatively, I can get rid of the zone values and just have 3 circulator pumps put in, one for each zone. The estimate is about the same for that, or to replace the zone valves with a Honeywell system.
Any advice? Right now everything works. I just don't want to be left on the coldest day of thje year (these things always break when it's 5 degrees outside) with a broken boiler and I can't even get the parts for it.
As for replacing the boiler, I'm not sure I'd get enough increase in efficiency to make it back in a reasonable amount of time. But then again, is it worth it to replace all those controls on a 25 year old boiler?
Again, if someone can help me figure this out, I'd appreciate it. Thanks!