So I have been on here for some time now and have been reading a lot about the gasser types. I am curious as what you all think it would cost me if I got rid of the Aquatherm and replace with a gasser? I have no storage and about 100 gallons in the pipes and boiler now. It is going to forced air in the house and forced air in the kennel, I have in floor but it is not working that great so I just leave it off. So all in all I am heating 3,000 square feet now. With a gasser with no initial storage am I going to see a huge difference in wood consumption? I know there is so many variables that a true answer is hard to get to so in general what would I have to buy in order to switch from OWB to a gasser. I see some can be had for around $4000 but I should be able to use my current plumbing and pumps right?