gas fired

Good afternoon & thanks in advance for your help & advice I have an American water heater, “FG” series from 2005. I recently awoke to my water heater spraying approximately 6 gallons of hot water out of my tpr valve along with significant condensation on the copper water pipe running into it...

I had a Lochinvar Knight WHN 85 gas modcon boiler installed in the fall of 2014. It's worked well, except for one foible: when starting up from cold, it will often "hoot". The hooting is at about 300Hz, and sounds like a foghorn or a French horn. It lasts for 2-20 seconds, easily audible...

We will be replacing our existing over sized boiler with a new higher efficiency boiler and want to reuse out existing chimney flue to vent the exhaust. Since the new boiler will produce lower exhaust temps, it was recommended that we use a 4" liner for the existing flue with 4" B-vent between...