I'm about to have my boiler replaced(Oil to Gas). Am I better off getting a "Stronger" Unit? The plumber says that a stronger unit is not necessary for my size house & that I'll just end up spending more to run it. In my ignorance I would think that a stronger unit would not have to work as hard or run at or near its maximum capacity and thus not eat up as much gas. On the other hand a weaker unit that "is adequate" for my size house would have to run more often near its maximum capacity thus burning more gas. Can someone help "educate" me on this matter? Thanks.

According to my owner's manual. I've got to pull out my refrig/freezer to clean the backside of the coils. I can to that but the problem is that there will still be a pile of crud inside of the "cage." I can clean only the front and back faces of the coils, not the inside of the coil unit since the fins effectively create a cage that is impenetrable to cleaning devices. I would appreciate any advice in cleaning the coils. One option is to cut the fins. It has to be carefully done and one safety requirement would be to wear safety goggles (just in case the tube is cut accidentally). Any comments or suggestions would be appreciated.