I have demo'd a Empyre Elite 100XT series this winter and will be putting releasing it around the first week of April.
It is EPA Phase 2 Certified, heats up to 3000sq ft "well insulated", I am heating 2200 square feet and can easily get 12 hour burns and my home isn't well insulated.
It will come with a complete optimizer system already installed on it, over a $500 value, "includes optimizer pump"!
This unit retails for $7495, optimizer retails over $500.
You can get it all with 9 1/2 years of remaining warranty for $5995.00, beat that for an EPA phase 2 unit!
I've never had any problems with it, everything works as it should!