Articles by John Siegenthaler, P.E.

I’m always looking for the basic concepts used and perhaps even some new, previously unheard of way of piping a hydronic system.

Noises from piping expansion, as well as swings in indoor temperature can be greatly reduced by using outdoor reset controls to regulate system water temperature.

We’ve only touched on a few of the possibilities this type of simple spreadsheet offers.

What method do you use for sizing fin-tube baseboard?

One of the irrefutable benefits of hydronic heating is the ease of zoning heat delivery to accommodate different comfort preferences or operating schedules.

Ever notice how hydronics “war stories” get passed around whenever a group of hydronic heating installers are put in the same room?

Myths and truths about boiler return temperature protection.

Primary/ secondary piping is a versatile piping method that's increasingly being used as the backbone of modern multi-load/multi-temperature hydronic systems.

Homeowners with air-source heat pumps don't know what they're missing.