How much does Solar water heater repair cost?

If you have a solar water heater, you know how cost-effective these units can be. Heating water is responsible for 18% of a home’s total utility bills, according to the US Department of Energy. And compared to a gas water heater or electric water heater, solar-powered heaters can reduce energy costs by 50–80%. 

Here’s how a solar water heater system works: A tempered glass panel, called a collector, is mounted on the roof (or someplace similar), where it absorbs the sun’s rays and heats a series of tubes. When pipes carry your home’s water supply to the collector, it’s heated by passing through the tubes (“direct” heating) or by passing around the tubes, which are filled with antifreeze (“indirect” heating, used in areas with freezing outdoor temperatures). The hot water is carried to an insulated storage tank, and then is delivered to your faucets, showers, and appliances when needed. 

Learn more about these systems here: Cost of solar water heater installation.

Like all water heaters, solar water heaters can develop problems—and when they do, they may fail to provide hot water. The solar collectors can be vulnerable to harsh weather, UV exposure, and flying or falling objects like tree limbs. Or the seals and glass can start to leak.

While you might be tempted to try a DIY fix, most homeowners lack the knowledge and experience required to handle different types of solar water heaters. And working on top of a ladder or rooftop can be dangerous. That’s why these repairs are best left to a solar water heater repair professional or a plumber who specializes in solar water heater repair. While they’re not always necessary, solar-contractor licensing and certification by the North American Board of Certified Energy Practitioners (NABCEP) are indications of a highly qualified professional.

In this guide, you’ll learn the typical cost of hiring a pro near you to get your solar hot water heater working correctly and efficiently.

If your solar water heater isn’t working right, a specialist will need to inspect the system to determine a cause. Some solar contractors might charge a minimum service fee of $50–150, which is usually credited toward the cost of repairs. For extensive repairs, their hourly rates average $50–110, while plumbers can cost anywhere from $60–140 per hour. 

Any number of parts on a solar water heater can malfunction, including the valves, pumps, joints, fittings, or controls. Repair costs can range from $150–1,500+, including the price of replacement parts. 

Common replacement part prices (materials only) include:

Dirty collectors can significantly reduce a solar heater’s ability to gather solar energy, increasing your energy bills. If your collectors have debris or layers of grime on them, have them cleaned, especially if you live in an area with a lot of cloudy days. Cleaning fees for solar panels average $95–350. 

If your solar hot water system has extensive damage, replacement might be the most economical option. The cost of replacement is $1,000–9,500 (after tax rebates or incentives), with an average cost of $4,000. When replacing an old unit, choose an Energy Star-certified product for the best energy efficiency.

These elements that can increase the cost of repairing your solar water heater:

Saving money on solar water heater repairs can be tricky, but here are a few things to try, especially if you decide to replace rather than repair your system. 

How much does it cost to replace a solar water heater?

Solar water heater installation costs typically range from $1,000–9,500, including equipment and labor. After tax rebates and incentives, the average cost is around $4,000. The upfront cost of a new solar water heater may be offset by energy savings within 5 years of installation.

How long does a solar water heater last?

A solar water heater should work for 15–25 years, depending on the quality and how well it’s maintained. Harsh climates or extreme weather can reduce the lifespan of rooftop systems, making maintenance even more critical. Manufacturers usually provide a warranty lasting 6–10 years for defects in the collector or tank, and 1–3 years for other parts.

How often should a solar hot water system be serviced?

Most solar water heater experts recommend servicing equipment every 1–2 years, depending on the type—ask your installer, or consult the user’s manual, for details. A more thorough cleaning and servicing every 5 years can be a good way to maximize the lifespan of your solar water heater and reduce costly repairs.

Find a solar water heater repair professional in your area.