I be really proud of myself stickin it to the man using only 225 gallons of oil since October 1 to heat my domestic hot water and supplement my corn stove. I still want to do more to help kill the oil demon. Whats the skinny on inside hot water boiler to hook in series with the existing Peerless oil boiler? The other rinkel is that my wife has slight to medium asthma mostly pet incuced which she manages well with meds. Whats the particulars on inside boilers for better or worse and who makes a decent one that won't destroy my economy as badly as Bush has wrecked ours? I like the outdoor type for the keeping it outside angle but from what I hear the inefficiency coupled with the sky high cost and smoke issues turn me right off. SHOW ME THE WAY!