Will I regret going oversize on new gas boiler?
Have a quote to install a Burnham gas fired SCG5 boiler, concentric vent, Watts 911S, Taco SR504, piping, remove old system, electrical and whatever else completes the system for $7300 including the local gas company incentive.
The proper size to install has been calculated to be a SCG4, but we're contemplating an addition sometime down the road and a SCG5 would be the proper size if/when that happens.
The contractor recommends installing the SCG5 now, with a manifold with extra connections to accommodate the addition.
How bad would it be long term if the SCG5 is installed and we don't do the addition?
We're upgrading from a 1979 oil fired system.