Ultra - 155,000 Jul 23, 2016

My suggestion is to have a very experienced high efficiency furnace plumber install the unit. From what I now know all aspects of the system need to be in balance to work properly. My unit is exceptional and my wife likes the colored pictures designating the various modes of operation.

Hot Dawg 75000 Unit Heater Sep 29, 2016

the heater is fantastic so far. no problems whatsoever. only been installed couple of weeks now. cold weather moving in so my 24 x 48 foot, well insulated garage should be toasty through the winter.

Works Great. L Am Really Satisfied. Oct 26, 2016

Very satisfied with the product.

Easy Install Aug 07, 2016

Using in warehouse to prevent pipes from freezing, but since the weather hasn't been very cold it is difficult to evaluate. The install was fairly easy.

Works Great! Jan 29, 2016

I would suggest comparing the 3 choices of boilers recommended. I just bought the top rated and didn't realize it didn't come with the pump as pictured. I probably would have taken the most popular second choice. Also, the relief valve was no good on my boiler so I had to purchase a new one. Otherwise it works great and was easy to install.