The best option would be to contact a few contractors/companies that specialize in solar heating installation. There are a few here in the Bay Area that are very reputable and will come to your home and give you an estimate. After discussing the process with them and reviewing the estimates, hopefully you will feel informed to make the decision to move forward with your project. If you would like some referrals of specific companies, email me and I will provide you with some local area companies that will help you. Good luck!