Williamson-thermoflo Gsa-200 - 125k Btu - 82.8% Afue - Steam Gas Boiler - Chimney Vent Review Sep 12, 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.

Too Early To Tell Dec 19, 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.

Rene In Moscow Nov 04, 2016

Very happy with this unit. It is a lot more efficient than the previous Coleman unit I had. A/C man was very happy with its ease of installation. Thank you.

Warm And Cozy Nov 04, 2016

I bought this unit not knowing if it would heat my 19 x 21 kitchen, but to my surprise I have not had to turn the unit any higher than 4 and that was on a -20 day . So my wife is well pleased with me.

Reznor Udap Series Sep 21, 2016

We purchased 75,000, 120,000, 150,000, and 200,000 BTU units, 28 units in total. The 83% efficient rating helped us offset the cost of the upgrade by being eligible for a rebate from our utility. All heaters were installed and work beautifully. The heaters look great! They are installed in a warehouse with great WIFI access so we controlled all 28 individual heat zones using 28 WIFI thermostats from Honeywell. Couldn't be a happier customer! Now management has control of all 28 heaters with... more