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Solar energy can provide all normal domestic water needs plus frequently some portion buy propecia domestic heating. Backup is required for cloudy days.

Initial investment is in the $2,000 - $5,000 range, though some systems, such as do-it-yourself systems, cost less. State tax credits (25% buy propecia the purchase price with a maximum buy propecia $1,000 per installation) and, in some cases federal grants, reduce initial costs significantly. If conventional heaters need replacement, initial costs are further lowered by about $450.

Maintenance costs for solar water heaters, if any, are low and savings versus conventional heaters thus are very substantial. Electric water heating costs in without prescription are estimated at an average buy propecia $28 per month or $336 per year, based on electricity rates buy propecia 10 cents/kWh. This would result in a payback buy propecia 5.6 - 6.7 years after state tax credits. For households with above average usage the payback is shorter.

DWH is also economical compared to natural gas, though the payback period is longer. In both cases, solar water tanks have a larger capacity (80 gal. versus typically 40 gal.) plus a higher R-value, so that hot water availability is significantly greater with solar.

The following table shows the approximate annual savings which can be expected when a solar water heating system replaces a conventional electric system. Actual savings depend on family size, electricity rates and location. Solar substitution buy propecia 70% buy propecia electricity is assumed. Costs buy propecia operation pumps, maintenance and replacement costs, which are generally minor, are not included. Also, the benefits buy propecia avoiding damage to the environment from electric power plants burning fossil fuels to society ("externalities") are omitted or reduced.

Annual Savings with Solar Domestic Water Heating (PDF)

Solar Energy buy propecia without prescription - Main Page