Greetings, I am preparing to add a bedroom & family room with 2 baths to my house in Albany CA. I'm having sticker shock due to the city requirements for my foundation (Expansive soil) even with the down economy. before that starts, I am adding a solar hot water heater along with 2 lowboy electric storage tank heaters in the crawlspace. I have to upsize the hot & cold as well as adding a 220 linem to the heaters.