I have first-hand experience with 3 Trinity T150's, one of which I helped patch up to get through this winter night: -25 Celsius. This t150 was installed by a very experienced installer and has been a problem every winter since it was installed. The owner says he has paid, on average, just over 600 dollars a winter, every winter, for the last 9 years. He has had enough, and this will be the last winter he will put up with this one. The next unit is a T200 with the domestic hot water on-demand option. It wasn't too much trouble for the first few years but was recently replaced because it started to act up – not making domestic hot water, pressure switches failing, and the fan making loud noises. Lastly, my own T150 that I installed by myself, "by the book"! – – – even the long-time installer was impressed with how it turned out when he came to check my attempt at doing an install. It has been quite good and I was quite happy until recently, when I started having problems with the stupid mini pressure switches that NTI, for some unknown reason, chose for their boilers! Oh wait, I know why they chose them! They are hard to get and made for NTI so you can only get them from NTI when you need one, at a crazy inflated price! I was quoted over $130 for one of them! I found a universal replacement for under $30! Now my fan is starting to act up and I was quoted an even crazier price for that part! It's not enough that NTI sold and made a profit from the sale of a boiler; they want to continue making a killing on parts after the sale! I think buyers of the NTI product should be rewarded for buying their product, and aftercare and parts should be supplied at a reasonable price! Would I ever but a new NTI? Maybe, if an NTI rep offered a replacement at a wholesale or cost price! Who would have thought the life span of a boiler would be so short! It seems NTI would have you believe that you should be buying a new boiler every 10 years or less! P.S. – NTI, if you happen to see this post, here is your chance to make things right and offer me a replacement boiler at a discount, and let's see if the new products are any better. I don't expect one for free, just a good deal! Take my old one and study it; learn what you did wrong and maybe a better product will come out of the information you will learn!