We are looking for a long-term reliable source for OG-300 certified domestic hot water systems for a 4-6 person home. Please do not send an offer unless you have reviewed the requirements on the website of SRCC for OG-300 system certification. All products must fully comply with the extensive list of requirements in the document above. System must be freeze-protected for cold weather environments and include all required parts (collector, tank, controller, etc) Please send specifications, prices, and a user manual in english for consideration. We will not follow up with any suppliers who do not include prices, manuals, and specifications with your first offer. Company Name:GreenLeaves Street Address: 101 W Kirkwood Ave Ste 240 City: Bloomington Province/State: Indiana Country/Region: United States Zip:47404 Telephone:1-812-2197270