Any thoughts on residential combinations natural gas boilers for hydronic and domestic hot water?
Would you put one in or go with two independent systems?
Thank you in advance for your feedback.
I'm not a plumber but I carefully installed a recirculation loop and pump and it doesn't leak. However, it didn't work either. I suspected the pump was air-locked, installed a hose bib near the pump to purge air. Success! But every week or two the system fails. I had assumed any air would...
