G125BE Low-NOx Residential Oil Boiler

I just spent 8 hours learning the ins and outs of Buderus’ new oil-fired hot water boiler. It has a new kind of burner that uses a special set up, hence the 8 hours.

This boiler is amazing. They offer it in 2 configurations, a non condensing version that is rated at 89% Annual Fuel Utilization Efficiency (AFUE), and a condensing version that is rated at 94% AFUE. This is good news for those of you that don’t have gas available, as we have been installing 95% AFUE gas fired hot water boilers for a few years. Now they are availble for oil fired applications.

It’s not just the AFUE that makes these systems so energy efficient. Yes, they do convert over 90% of the potential energy in the fuels into heat energy, but they also utilize outdoor reset controls that modulate the temperature of the water in the system based on the outdoor temperature. This ALONE will save a minimum of 10% of your fuel bill, even on an old boiler. With a boiler that can handle low temperatures, you are able to save even more! This is because the lower the temperature you can run, the more money you save.

By the way,  Buderus will only sell this boiler to someone who has taken the class, and we are the only ones trained in its repair.  It is state of the art technology, backed by one of the best boiler and cast iron makers in the world.