Savings and costs for solar domestic water heating
Solar heating systems can save you money in the long run. The cost and benefit of purchasing a solar water heater vary from region to region, so check costs in your area. Depending on the price of the conventional fuel, a solar water heater can be more economical over the life of the system than heating water with electricity, fuel oil, propane, or even natural gas. That’s because the fuel sunshine is free. Research shows that the average household with an electric water heater spends about 25% of its home energy costs on heating water. If you are building a new home or refinancing because of a major renovation, the economics are even more attractive.
Savings and cost for solar swimming pool heating
A solar heating system for your pool usually costs between $3,000 and $4,000 to buy and install. This provides a payback of between 1.5 and 7 years, depending on the cost of the fossil fuel your system replaces. The actual cost and payback depends on your site, the type of system you choose, financing, and the length of the pool season. A solar system allows people to swim in a pool that was previously too costly to heat and too cold to use.
Savings and cost for solar space heating
The cost of a solar space heating system depends on many factors, including the size of your house, how airtight it is, how much of your heat will be supplied with a conventional backup, the system you choose, and your site. In general, solar space heating systems can provide 40% to 60% of your space heating needs. These systems are most economical for consumers who would otherwise be heating with electricity, rather than with natural gas or other fuels. But solar space heating is needed most when sunlight is least available, during the winter and at night and needed least when sunlight is most available, during the summer and the daytime. So today’s solar technologies are not likely to be a cost-effective solution for active solar space heating in most homes, but with improving solar technology it is going to be better very soon.