Rinnai i120SN Condensing Gas Boiler, Whole Home Natural Gas Heater with Space-Saving Design and Smart Features, (120K BTU)

These units are highly technical compaired to old boilers.You need a licensed plumber like i had to be the boss. I was the common laborer,gopher, ect. You shouldnt attempt it on your own .After buying this, we took out an old inneficcient unit, and replaced it . We spent over 1000 dollars on fittings, and tubing . The install went per the manual. I would recommend you purchase the pre made closed tee section below the unit, as it was time consuming to make up out of pieces. you will save an easy 8 hours doing this, and for 350.00, its well worth it. Doubt if we saved any money making our own.This unit heats my house well, and very quiet operation.

Be on the lookout for flash sales on this product. I purchased it at $1500 as it was on sale randomly. I would try to avoid paying the full price as their are a lot of parts still needed to install the unit. I have received 3 error "E-110" codes since install but nothing listed in the T/S manual is the cause except potentially the gas solenoid firing valve. Every time it was reset it ran flawlessly. We are continuing to monitor the unit and if it sends another error code we will seek replacement parts from Rinnai. I have heard of this happening to others so I think there was just a bad batch as normally the Rinnai products are exceptional.