Rated current price of eight solar tubes
SAVINGS & RETURN ON INVESTMENT An average family of four uses 70 gallons of hot water per day at a cost of $5352 per year. The typical Solar Water Heater will save 90% or more of the heating costs, or $482.00 per year. A typical heater of this size (PT-40CN) with installation averages $6650 minus a 30% tax credit;