So yea, I checked the distribution panel where the main is split and no breakers there. So 150A it is.
I got a quote for an oil to electric furnace conversion where they said I couldn't install the electric furnace because I only had 100A and that I would have to do a service upgrade. I'm now thinking that I don't need the upgrade since 150 is enough for my needs.
Here are my main appliances: electric oven, dishwasher, washer, dryer, fridge, water heater. There used to be second oven in the basement kitchen but I don't use it and will eventually remove that wiring/breaker. This will free up an additional 40A space.
What do you guys think?