Good Match For Replacement Aug 12, 2016

Dimensions all matched and lined up with previous ductwork. Made installation fairly easy.

Williamson-thermoflo Gsa-100 - 62k Btu - 82.9% Afue - Steam Gas Boiler - Chimney Vent Review Sep 14, 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.

Great Heater Nov 01, 2016

We install a few gas furnaces. They are working excellent. Thank you.

Too Early To Tell Sep 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.

Good Unit, No Problems Jul 18, 2016

Used this unit with a 12, 18, 9, 9 set up with a 4-way distribution box, it has worked very well with very little noise. There is a very high pitched sound you can hear if you are near it, but it is not very noticeable.