Best Thermostatic Mixing Valves for Solar Hot Water: 5 Compared
Caleffi and Watts mixing valves side by side: outlet setting range, the hottest inlet water each accepts, pressure rating, flow, accuracy and ASSE 1017 or 1070 listing.
DIY Solar Water Heater Safety
Hot water systems can scald, build dangerous pressure and grow bacteria if stored water stays lukewarm. This section explains scalding prevention, pressure and temperature relief, drinking-water materials and quality, roof and structural safety and codes and when a licensed professional is required.
Pressure and Temperature Safety in Solar Water Heaters
Hot water expands and builds pressure. Here is how relief valves and expansion tanks keep a solar water heater safe and what to check.
Solar Water Heater Codes, Permits and Professional Review
Codes exist because solar water heaters combine plumbing, roofing and high temperatures. Here is how permits, inspections and certification fit in.
Roof and Structural Safety for Solar Water Heaters
Collectors and tanks add weight and wind load to a roof, and roof work itself is risky. Here is what to plan and when to bring in professionals.
Preventing Scalding From Solar Hot Water: Tempering Valves and Settings
Solar heated water can get hotter than a normal water heater setting. Here is why that matters and how tempering valves keep taps safe.
Drinking Water Safety and Materials for Solar Water Heaters
If a solar water heater touches drinking water, materials and separation matter. Here is what EPA and the FSEC manual say.
DIY Solar Water Heater Safety: Scalding, Pressure and Codes
Hot water can scald, build pressure and harm your roof or water quality. Here are the safety basics and when a licensed professional is required.