Water heating is the second biggest energy user in most homes, so a solar water heater attacks a real bill, and it qualifies for the 30% federal credit.
Heating water is usually the second largest energy use in a home, behind heating and cooling. A solar water heater goes straight at that bill, and unlike a solar pool heater, it qualifies for the 30% federal tax credit.
Most residential solar water heating systems run about $1,500 to $5,000 installed, depending on the system type, your climate, and roof access. After the 30% federal credit, a $4,000 system nets out around $2,800. The collectors are simple; the price is mostly the tank, the plumbing, and labor.
According to the Department of Energy's guidance on solar water heaters, systems come in two families. Active systems use pumps and controls to move water or a heat-transfer fluid, and they tend to cost more but perform better in cold climates. Passive systems have no pumps, rely on gravity and natural circulation, and are cheaper and longer-lasting, though generally less efficient. Which fits depends on how cold your winters get.
Yes, with conditions. The Residential Clean Energy Credit covers solar water heating property, including installation labor, as long as the system is certified by the Solar Rating and Certification Corporation or a comparable state-endorsed entity, and at least half the energy it uses to heat water comes from the sun. Water heating for a swimming pool or hot tub does not count. You claim it on IRS Form 5695.
A solar water heater can cut water-heating costs substantially, and water heating is a big enough slice of the bill that the savings add up. Payback varies with your climate, your hot-water use, and what fuel you are replacing. Homes replacing expensive electric water heating in sunny areas see the fastest return.
A solar water heater is not the only efficient choice. A heat pump water heater runs on electricity but uses far less than a standard electric tank, costs less upfront than a full solar system, and also qualifies for a federal tax credit. Solar wins on running cost in sunny climates and pairs naturally with an existing roof array. If your roof is shaded or the budget is tight, price a heat pump heater before you commit to solar.
Most residential systems run about $1,500 to $5,000 installed, depending on whether it is an active or passive system, your climate, and roof access. After the 30% federal credit, a $4,000 system comes to roughly $2,800.
Yes, if it is certified by the Solar Rating and Certification Corporation or a comparable body and at least half its water-heating energy comes from the sun. The 30% Residential Clean Energy Credit then covers the equipment and installation. Pool and hot tub heating do not qualify.
Active systems use pumps and handle cold climates better, at a higher price. Passive systems have no moving parts, cost less, and last longer, but are generally less efficient. Your winters are the deciding factor.
It targets water heating, one of the largest energy uses in a home, so the savings are meaningful, especially if you are replacing expensive electric water heating in a sunny climate. Payback depends on your fuel, your usage, and your weather.
Chris Terry edits Encore Editorial and writes across business, consumer markets, and whatever topics benefit from clear, sourced prose. He is based in San Diego and Lincoln, California, and can be reached through the contact page.