Attendees chose from six technical presentations based on energy efficiency, including hydronic piping, variable frequency drives, high efficiency and low NOx burners, dual fuel alternatives, commercial domestic hot water and regional utility energy rebates.
In my last column, we discussed thermostatic radiator valves. I think we can safely call TRVs old technology. After all, they’ve been around for 75 years. Cast-iron radiators certainly are another example.