Views: 0 Author: Site Editor Publish Time: 2025-12-03 Origin: Site
Solar water heaters are an excellent way to harness renewable energy for your household needs. However, like any system that heats water, they are susceptible to limescale buildup. This chalky deposit, primarily composed of calcium and magnesium carbonate, forms when hard water is heated. Over time, scale can coat the collector tubes and storage tank, significantly reducing your system's efficiency, increasing energy consumption, and potentially leading to costly repairs or failure.
Here is a concise guide to descaling a solar water heater.
The Solution: Vinegar Circulation
Tools: White vinegar, submersible pump, bucket, two hoses, wrenches.
Steps:
1. Isolate & Drain: Bypass the system from main water. Drain the solar loop completely.
2. Create a Loop: Disconnect pipes at the collector loop. Use hoses and the pump in a bucket of vinegar to create a closed cleaning circuit.
3. Circulate: Pump undiluted vinegar through the loop for 45-60 minutes to dissolve scale.
4. Flush & Restart: Drain vinegar, reconnect pipes, and thoroughly flush the system with clean water. Refill and restart.
For the Tank: Drain the tank, add 1-2 liters of vinegar, let sit for an hour, then drain and flush well.
Prevention:
· Install a water softener if you have hard water.
· Avoid excessively high temperature settings.
· Get an annual professional inspection.
Regular descaling every 1-3 years maintains efficiency and system lifespan.
