EAST PETERSBURG, Pa. — Dan Holohan will present his seminar, Classic Hydronics, on Wednesday, April 9, 2014 at the Holiday Inn in Grantville, Pa. All proceeds from this seminar will benefit the ...
BETHPAGE, N.Y. — Dan Holohan has published a new book, Classic Hydronics: How To Get The Most From Those Older Hot-Water Heating Systems, that the author says takes a fresh look at systems that are ...
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