Overlake - just teasing you. Last winter I bought a new high efficiency boiler (Mass) which is direct vented outside. The new piping is no big deal yeah two more pipes to look at but what ever not a deal breaker for me. Before changing out the old Boiler I was on a gas payment plan for 185.00 all winter (natural gas) and my current payment is 144.00 and at that my December bill had me 230.00 to the "good" another words I'm 230.00 ahead of my usage. I used Mass Save and also got a deep discount (75%) off of an entire attic insulation job. Oh and the boiler was financed at 0% how could I say no?
Good deals and incentives out there right now keep doing what you are and shop around. I found my install prices actually didn't vary too much just be sure your comparing "apples to apples" some cheaper prices also come with bargain basement equipment.