We live in Upstate New York and the house we bought a year ago was a ranch built in 1956. It is L shape 3200 sq feet. It has 225 running feet of cast iron baseboard, heated oversized two car garage(blower unit) and an open basement to the garage. Well insulated house but with very large window areas through out the house.
The boiler is the original to the house (53 years old) American Standard 360000 btu input. It runs fine and the HVAC contractors (3) who we have had in for estimates to replace it say it is very well maintained and in good shape.
Domestic hot water heater is 2006 gas fired AO Smith 50 gallon unit.
My wife and I are both in our sixty's and retired so we are not going to be here most likely for the next 30 years. Though we plan to be here as long as our health and the good lord lets us be here.
Question are as follows:
Should we be replacing the boiler or continue to use it till we have a problem?
If we should replace it what should we replace it with and should it include indirect hot water heat?
Contractor one wants to put in HI Efficiency Boiler (Burderus GB142) and keep the current hot water heater.
Contractor two wants to put in HI Efficiency Boiler (Dunkirk Q95 m and indirect hot water)
Contractor three wants to put in an 85% efficent boiler, keep currnt hot water heater and add out side temp reset.
What is the right way to go given our age and the demographics of the house?