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AFUE efficiency is a calculation that is done on the boiler itself, regardless of install - it's a theoretical analysis of the internal boiler design with certain (best case) assumptions about how it...

Sorry - too detailed for me to help! But...

You can adjust the outdoor (reset) temperature reading to read +/- 9 degrees F to compensate for off-set issues. It's parameter 9 (T4 Correction) in...

I agree - we've had an Ultra for over 4 years, and we've been really pleased. There's a lot of misinformation on the web about aluminum for boilers, but the fact is that aluminum has been used for...

Ditto on the Weil Mclain Ultra recommendation. We have two baseboard zones and a staple-up radiant zone that was running on an 70's-era boiler.

For our install, going out an inconspicuous side...

Where are the design details? There's just no technical information anywhere to back it up. Part of what allowed me to make a decision on the Weil-Mclain Ultra was all of the design info that they...

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My beef with W/M is, like most other people's, leaking seals. The Gold seems to be a better boiler than it's predecessor but I've still seen leakers & W/M will find any excuse they...

Email me at dpvwia@yahoo.com and I can tell you what my Ultra 155 cost me (Cleveland area).

Dave

Weil-Mclain's are excellent boilers.

The System 2000 is all advertising, with no technology to back it up. Study up on dozens of technical documents on Weil-Mclains website and examine the Ultra...

OK well, I'll chime in on our 2.5-yr old Weil-Mclain Ultra: from $400+/mo two years ago to <$300/mo the past two years during the coldest month. BUT, I did add 6" of fiberglass to our attic ($330). ...

For what it's worth, we've been running a Weil-McLain Ultra 155 in our home for two years with absolutely no complaints. My BTU estimates came in around 130-150 MBTU, depending on my assumptions for...