Boiler brand

[spiraino]

Getting ready to have my heat system finished and I have to pick the boiler. My shop is 35 X 40 with 12.5 ceilings and is in Wisconsin. I have it well insulated and 5 loops of PEX on 2” of foam, one zone, natural gas. I will be using this for hot water so a combination condensing unit is what I am after. In searching for reviews I can’t seem to get a clear picture of what a good brand would be. I have one contractor wants to use a Bosch Greenstar 100. A friend recommended the Laars Mascot. Someone on the forum recommended a Navien. Any input would be great. Thanks in advance

 

[koditten]

I've got 2 Larrs units in 2 different locations. Both around 10 yrs old. No issues to report.