Wetstock IV, the gathering of “Wetheads” - contractors, wholesalers, manufacturers representatives and engineers - to discuss hydronic heating, has been announced by Dan Holohan, PM's hydronics columnist. This time, the popular event will take place in Baltimore, Md., at the Holiday Inn BWI (www.bwiholidayinn.com) on Apr. 17, and once again, our sister publication PM Engineer will be the official sponsoring magazine.

The topics for round-table discussion on this go-round will include Steam, Radiant Slab & Staple Up, Radiant Controls, Radiant and Wood Floors, Boiler Concerns, Ethics, Innovative Construction, Control Strategies, System Piping, Hydro-air, Fuel & Venting Issues, Antifreeze and Other Chemicals, Hiring & Training, Insulation, Marketing Hydronics, Company Policies, Professionalism, Cool Software, and Indoor Air Quality, plus Dealer's Choice tables where the topics will be assigned on the fly.

For more information, visit www.heatinghelp.com or phone 800/853-8882.