Reznor Udap-400 Power Vented Gas Fired Unit Heater - Ng - 316 Stainless Steel Heat Exchanger - 400,000 Btu Review Aug 12, 2016

I have owned this same 400k btu unit for 8 years and it is the best purchase that I have ever made. It is used in a commercial setting and has never had a problem or service call. Reznor quality is second to none and definitely worth the extra cost.

Owner, Custom Made Aug 25, 2016

I replaced a Dunkirk XEB-3 (20 yrs. old) with the Dunkirk boiler above. The new one is all most identical to the old one, that is the pipes were located same as the old, so gas and water lines were easily plumbed. The old electrical wires could be used although lengthened to connect to the digital controls. The circulators location has changed, it's still provided with its wiring provided. Venting is the same as the old one. I was happy to get another Dunkirk that installed easily.

Excellent Sep 01, 2016

Excellent! I use this in combination with solar. I really like this one - we have three others.

Replacement Boiler Mar 23, 2016

I had to buy a boiler to replace one leaking ,putting pilot out..i like the electronic ignition, but seems to be more to go wrong...replace boards $100...standing pilot ,no problems..except leaks in boiler...ill fire warranty claim later...6 year old boiler......i like quality of weil mcclain....we will see about warranty...ps installer now has parkinsons, and will not/can't cooperate......

So Far So Good May 17, 2016

Your illustrations for installation should be better. For example the rerouting of the condensation lines was not illustrated well. We figured it out but it took extra time. ....time is...? EVERYTHING!