Hello! I'm hoping to get some feedback on boilers and water heaters for my house.
2-family brick house in Rhode Island, built in 1950. Two adults in each apartment, one bathroom each, +laundry. Separate gas meters for each apartment.
Forced hot water system with wall-inset cast iron convectors. The current boilers are 70-yr-old oil boilers and the water heaters are 9- and 10-yr-old gas heaters.
I used the Slant/Fin heat loss calculator for my apartment (1st floor) and got 38,410. I'm assuming 2nd floor apartment isn't too different.
Proposals from different contractors (for identical systems for each apartment)
- Viessmann Vitodens 100
- Williamson GWA-070 Natural Gas Fired 70k BTU 83.0% AFUE
- Burnham ALP-080 95% AFUE modulating condensing stainless steel, Crown MS2 40 gallon indirect fired water heater
- SlantFin VGH100CH wall hung condensing gas boilers, HeatFlow 40 indirect water heaters
Comfort and reliability are my main concerns, as I plan to be here long-term.
Opinions on traditional vs modcon with indeirect vs combi for this situation?
Opinions on the proposed models?
Thanks for any input!