Using solar power for hot water for your home can provide many of the same benefits home solar panels overall. You could save money, be a bit more independent of your utility company, and cut your home's fossil fuel consumption. Contact online >>
Using solar power for hot water for your home can provide many of the same benefits home solar panels overall. You could save money, be a bit more independent of your utility company, and cut your home''s fossil fuel consumption.
It all makes sense since humans have been using the sun to heat water since at least ancient Egypt. Today''s solar water heaters use that ancient idea and wrap it in modern technology. Here''s a guide to help you see if a solar water heating system, with or without going solar overall, is the right fit for your life and home.
Solar water heaters are a cost-effective way to heat a residential property''s water supply with the power of the sun. Most solar water heaters harness the sun''s thermal (or heat) energy by directly allowing sunlight to warm an outdoor water supply or by using special solar thermal energy collectors.
It''s important to know thermal solar collectors are distinctly different from the photovoltaic (PV) solar energy systems Palmetto supplies homeowners to generate electricity and save on utility power costs.
Although you can heat your water with the electricity generated by PV solar panels (we will get into more detail about this later), self-contained thermal solar water heaters are another great way to go green and save money on monthly energy expenses.
Pardon the pun, but knowing how passive and active solar water heater systems work can prevent you from getting into "hot water" later if you invest in the wrong technology for your home or climate.
Passive solar water heating is about as simple as home hot water can get. It is a purely solar-powered water heating system that lacks moving parts, additional energy resources, and significant upfront costs. A typical passive solar water heater consists of not much more than a large rooftop tank (known as a batch collector), where the water is warmed by the sun before flowing into your home''s plumbing system.
Although less effective for controlling the temperature of your hot water than an active system, passive solar water heaters are often feasible solutions for warm climate areas that rarely experience below-freezing temperatures. Relying on daily sunshine to heat the water tank, passive solar water heaters are generally better at delivering hot water towards the end of the day, rather than in the morning.
Despite higher costs, active solar water heaters are the most common solar water heating appliances installed in the US because they are much more efficient than passive systems. By definition, active solar water heaters add an "active" element to the water heating process with an electric pump and valve controls to push either water or a heat-exchanging liquid throughout the entire system.
Here, an active direct solar water heater warms your home''s water directly with the sun. In contrast, an active indirect solar water heater uses the sun to warm a separate fluid before transferring the heat from that fluid to your water supply. By keeping your water indoors, active indirect solar water heaters are the preferred technology for climates that frequently dip below freezing temperatures.
When paired with a photovoltaic solar system to save money on electricity, active solar water heaters can be powered by the sun in two separate ways — by collecting heat through its thermal components and operating the pump controls with solar electricity.
Compared to conventional water heating systems, solar water heaters can bring your home into a greener and more efficient future full of energy cost savings. With that said, savings with a solar water heater aren''t the same for everyone. Switching may not be worth it for your needs, especially once you consider some advantages and disadvantages.
If the sun shines on your roof and there is room for thermal energy collectors, solar water heaters could be worth it to save money on long-term energy costs with a sustainable, green power source.
In the US, you may be able to reduce your total solar water heater installation costs by up to 30% with federal clean energy tax credits. The federal income tax credit is part of the Residential Clean Energy Credit and when it''s time to do your taxes, you''ll need IRS Form 5695. The credit can cover taxes you owe or have paid that year and can be rolled over to future years. Consult your tax advisor to confirm your eligibility.
While an excellent idea for many, whether or not solar water heaters are the absolute best choice for your home depends on several unique factors, including your local climate, the other energy systems on your property, and your personal hot water demand.
Conventional water heaters, also known as storage water heaters, are similar to the solar systems we''ve covered, with the sole difference being the energy source. While solar hot water systems can utilize renewable and emission-free solar power, most conventional water heaters run on natural gas or electricity supplied from the power grid.
Energy Star reports homeowners can cut their annual hot water costs by 50% or more compared to conventional water heating systems by switching to a solar water heater. Today, many solar water heaters can be classified as hybrid systems because they use a secondary source of power (like gas or electricity) to boost performance when needed. This can be on cold mornings, overcast days, or whenever solar thermal alone is not enough to meet home hot water demands.
Of course, thermal solar hot water heaters are not the only technology on the market that could be used to help reduce your hot water energy consumption and costs. For instance, heat pump water heaters capture heat from the air surrounding your home and transfer it to your water tank.
Besides heat pump water heaters, tankless water heaters can also help you reduce unnecessary power use by heating water on demand instead of constantly using energy to maintain high temperatures in a large storage tank. Especially when combined with a PV system, high-efficiency hybrid or electric water heaters are a great energy-saving solar water heater alternative that can keep your water heating costs low.
On average, going to solar water heating saves about 50-80% on water heating expenses according to the Department of Energy. The exact savings will depend on factors such as your area''s climate, your usual hot water usage, and incentives such as tax credits or rebates.
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