Hello all. My wife and I closed on our house about two weeks ago. Per the lenders requirements the boiler must be replaced. The contractor is letting me pick it out (we are good friends). Attached is a rough map of the current baseboard system. The house is a 1966 ranch, around 1220 sq ft, natural gas, and all copper plumbing.
Energy audit facts:
-flow rate of 3124 CFM measured by blower door test (1700 is recommended, and fairly easy to achieve given the list he supplied)
-energy factor of 5.5 btu/sqft/hdd (he called this average), after "energy improvements it was 3.9 btu/sqft/hdd
-recommended boiler size of ~45k btu.
I would like to go with radiant floor in the near future (a year at the latest). I have been looking at the smallest lochinvars that are around 50-55k btu's. This is above what was suggested but the auditor didnt consider that i will be replacing the old water tank with an indirect and will be heating atleast half of the basement with baseboards, although not all the time.
So my question is: is there a boiler or size range anyone can point me towards that will work with the baseboards until the radiant is in? Also a pump size? Any other suggestions? I have roughly $3400 to spend on a unit.