Williamson-thermoflo Gsa-250 - 157k Btu - 83.0% Afue - Steam Gas Boiler - Chimney Vent Review Aug 06, 2016

Built by a division of Weil McLain the boiler it is similar to their products. Seems to be build well and I hope to have years of trouble free working status. A little difficult to install given the position of the ports. I will recommend this product to others.

Seeley Nov 10, 2016

Very easy to install... working great... no issues... If this works as good as it is now for the next 10 years, as it is warrantied for, I will be getting another just like it... Wonderful furnace!

Too Early To Tell Aug 07, 2016

Hooked up the heater in late June, so no way to tell how it will work when the cold weather arrives. Hook up was easy, except the schematic didn't really tell which of the possible 5-6 spots the two line thermostat was to be hooked. Blew a fuse the first time I turned it on, but the second placing of the thermostat lines worked.

Not Great Nov 07, 2016

Not great... wish I kept my 40 year old one... it worked a hell of a lot better.

Works Great! Apr 15, 2016

January 2016 our heater went out at our business. We ordered the Modine PDP-150,000 BTU Unit Heater. Other than the shipping was slow - we received this heater a little later than expected in Wisconsin. The heater was installed and is working great as of today, March 2.