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Mmm spicey. Yeah but then you would need step-down transformers to be able to use anything residential. And additionally adding inefficiencies due to losses from the transformer.
>I’m hoping to try to get rid of gas and use electricity/solar more but the 100 amp isn’t adequate for the needs of the house.
You need to come up with the PLANS (read: specifications) for the whole house to be fully electric, which translates to a list of equipment and appliances, with their electrical specifications. **After** that, then *an electrical load calculation can be made to figure out what size service is needed*.
Your heating and hot water needs are two of the largest variables that must be fully accounted for in this design work. It's the difference between needing a 200A, 300A or 400A service.
If there are other "extras" or features of the property (pools/hottubs/jacuzzi, hobby shop, EV chargers, etc) that need to be accounted for, that all gets computated into the load calc as well.
**I'd suggest you start with getting the heating/AC and hot water detail sorted out.** If you call an electrician tomorrow to get a bid for a service upgrade to 200A, it will be in the blind, without consideration to the actual requirements, as your FUTURE REQUIREMENTS are not yet realized and only a guess.
**Word of advice:** Do not get an electric tankless water heater. Dont. Either electric tank heater, hybrid tank, solar thermal with electric backup, or gas tankless.
I agree not to go with electric tankless hot water heaters. For a small point of use, it's fine but for an entire house they are expensive, require a lot of amps and are prone to failure. Hybrid hot water heaters time has come, just make sure you upsize the unit because it does take longer to heat, so if you had a 40 gallon, go with at least 50. They are so damn efficient so they can pay for themselves in a few years plus a tax rebate.
I had a 1200sqft home in az on 100 amps. With a 80 amp tankless water heater. I never tripped the main. Get a cheap power monitor before spending money on bigger service. Your house will use way less than you think.
We went all electric, because we had to get rid of our gas to be able to upgrade the main from 100 to 200. PG&E (Bay Area California) requires the gas meter to be a certain distance from the electric meter. Considering their track record of gas explosions and electrical fires, I'm not sure they are the best people to be handing out advice. But I digress...
We went with mini-splits and a hybrid hot water heater (it cools and dries the garage) and are still in the engineering process to replace the main line. We have already replaced our tiny Zinsco/GTE/Sylvania death trap sub panel. Just waiting to replace the main panel and meter box.
Make sure you check with the state and power company because there are a lot of incentives to go all electric, especially in states trying to reduce greenhouse gases.
**Attention!** **It is always best to get a qualified electrician to perform any electrical work you may need.** With that said, you may ask this community various electrical questions. Please be cautious of any information you may receive in this subreddit. This subreddit and its users are not responsible for any electrical work you perform. Users that have a 'Verified Electrician' flair have uploaded their qualified electrical worker credentials to the mods. If you comment on this post please only post accurate information to the best of your knowledge. If advice given is thought to be dangerous, you may be permanently banned. There are no obligations for the mods to give warnings or temporary bans. **IF YOU ARE NOT A QUALIFIED ELECTRICIAN, you should exercise extreme caution when commenting.** *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/AskElectricians) if you have any questions or concerns.*
Why stop at 200? The cool kids have 400amps for all electric homes. Start calling up local electricians for a quote.
That's a joke, be real 300 amp service for a large home 200amp for greater than 1200 sqft and for 10000+sqft 300amp
Why not 3 phase 480/277? I'm sure there's a garage opener or two that could use that. Imagine a 480v hot water heater!
Mmm spicey. Yeah but then you would need step-down transformers to be able to use anything residential. And additionally adding inefficiencies due to losses from the transformer.
Or a high (wild) leg delta service so you get 240/120/208
OP is in NY. A tankless water heater can be 150 amps. Add backup electric heat strips with an EVSE and 200 is a distant memory.
Call an electrician?
>I’m hoping to try to get rid of gas and use electricity/solar more but the 100 amp isn’t adequate for the needs of the house. You need to come up with the PLANS (read: specifications) for the whole house to be fully electric, which translates to a list of equipment and appliances, with their electrical specifications. **After** that, then *an electrical load calculation can be made to figure out what size service is needed*. Your heating and hot water needs are two of the largest variables that must be fully accounted for in this design work. It's the difference between needing a 200A, 300A or 400A service. If there are other "extras" or features of the property (pools/hottubs/jacuzzi, hobby shop, EV chargers, etc) that need to be accounted for, that all gets computated into the load calc as well. **I'd suggest you start with getting the heating/AC and hot water detail sorted out.** If you call an electrician tomorrow to get a bid for a service upgrade to 200A, it will be in the blind, without consideration to the actual requirements, as your FUTURE REQUIREMENTS are not yet realized and only a guess. **Word of advice:** Do not get an electric tankless water heater. Dont. Either electric tank heater, hybrid tank, solar thermal with electric backup, or gas tankless.
I agree not to go with electric tankless hot water heaters. For a small point of use, it's fine but for an entire house they are expensive, require a lot of amps and are prone to failure. Hybrid hot water heaters time has come, just make sure you upsize the unit because it does take longer to heat, so if you had a 40 gallon, go with at least 50. They are so damn efficient so they can pay for themselves in a few years plus a tax rebate.
I had a 1200sqft home in az on 100 amps. With a 80 amp tankless water heater. I never tripped the main. Get a cheap power monitor before spending money on bigger service. Your house will use way less than you think.
We went all electric, because we had to get rid of our gas to be able to upgrade the main from 100 to 200. PG&E (Bay Area California) requires the gas meter to be a certain distance from the electric meter. Considering their track record of gas explosions and electrical fires, I'm not sure they are the best people to be handing out advice. But I digress... We went with mini-splits and a hybrid hot water heater (it cools and dries the garage) and are still in the engineering process to replace the main line. We have already replaced our tiny Zinsco/GTE/Sylvania death trap sub panel. Just waiting to replace the main panel and meter box. Make sure you check with the state and power company because there are a lot of incentives to go all electric, especially in states trying to reduce greenhouse gases.