Quick Answer
Regular maintenance of solar thermal systems includes inspecting collectors, pumps, and piping for leaks or damage every 6-12 months, and performing thorough cleanings every 1-2 years.
Collector Maintenance
Inspect solar collectors for soiling, debris, or damage every 6-12 months. Clean them using a soft-bristled brush and mild detergent to avoid damaging the surface. For more thorough cleanings, use a hose with a low-pressure setting to avoid damaging the collector’s frame or tubing.
System Component Checks
Check the system’s pumps, valves, and actuators for proper function, leaks, and wear. Check the fluid levels and pressures in the system, and top off as necessary. Consider replacing the system’s antifreeze solution every 5-10 years to maintain its effectiveness.
Hydronic System Checks
For radiant floor hydronic systems, check the heat exchanger, pumps, and valves for proper function and leaks. Inspect the piping for signs of corrosion, scaling, or damage. Consider draining and cleaning the system every 2-5 years to remove sediment and mineral buildup.
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