Had the new Enerzone 2.3 insert installed yesterday. Looks good and works great. We had the first fire in it last night. Outside low temp was about 37 degrees. It had our 1800 sq ft house at 71 degrees all night with the heat pump shut off. Secondary combustion was working well. Draft was going strong and no smoke in the house. Still a nice bed of coals in the morning burning sugar maple. The controls are easy and the blower seemed to work really well. The only thing at all I wasn't 100% happy with was there seemed to be a lot more ash left than I thought there would be. Overall I am very pleased so far.