Burnham Radiant Heating Co. will hold a series of two-day seminars on radiant heating opportunities, the benefits and advantages of radiant heating and the tools necessary for the design and installation of hydronic radiant floor heating systems in residential and commercial applications. All seminars will be held in Lancaster, Penn. Dates are: May 10-11, Sept. 13-14, Oct. 4-5 and Nov. 8-9. For more information, call 888-881-2742.