|
Since you water is heated off the boiler you are in much better shape than if you had an electric unit.
What you describe can be run off a decent 5500 watt unit. Go larger if you want more cushion for other loads.
How will you be transferring the load? If you intend on using a whole house transfer switch or main breaker interlock, I'd definitely recommend a larger unit. Something 6500 watts and up. it gets too easy to forget that you are on a genny if everything can be run.
__________________
No, that's not me in the avatar. I just like the picture. 
|