I walked up to the ATM machine the other day, put the card in, punched in the code and got a rejection slip instead of cash. “Transaction selected is not allowed.” I pulled out the card, waited for ...

In a December 2014 Plumbing & Mechanical Hydronics Workshop column, we discussed the benefits of dual-fuel systems that combine a geothermal water-to-water heat pump with a mod/con boiler. The boiler ...

North American hydronic professionals can now choose from dozens of modulating/condensing (mod/con) boilers. Many are designed for wall-mounting. Those who design these boilers strive for small ...

Many faithful readers of my column know that I have a modcon boiler in my home. In fact, as soon as I get done with my special project in the mountains (Hydronicahh ...

We’ve installed a mod/con boiler. The specs say it can be vented directly through the back wall, and in fact this is the preferred method over venting through chimney. But neighbor objects to the ...