Articles by John Siegenthaler, P.E.

We can probably leave a bit more slack on our slide rules when it comes to designing a good heating system.

Let the learning continue -- for all of us.

Your radiators aren't the only things warming the house.

Piping the indirect water heater as a parallel rather than secondary circuit.

Does it make sense to increase the tube size in radiant floor slabs to get more heat output?

Answers to the questions you've been asking.

When it comes to comfort, even a small heated floor makes a big impression.

One benefit of hydronic heating is the relative ease of dividing the distribution system into several independently controlled zones.

Are you oversizing the expansion tanks in your radiant heating systems?

Radiant heating technology in the hands of knowledgeable professionals can provide superior comfort and value.