Water Heaters for Zero Energy Homes
Sunshine is hot...water needs to be heated....whalah...combine them!
Solar Water Heating System
Solar water heating can use an Integrated Collector Storage system to preheat water. And solar water heaters are now eligible for some nice incentives in some states such as California.
Integrated Collection Storage systems (ICS) are best where there is no freeze danger.
You will get better performance from open look, active systems with a 40 square foot cllector and DC solar powered pump (for simple operation)
You can use a tankless gas backup for 77% efficiency.
What to watch for...beware of hot water recirculation systems without occupancy control. On demand systems can increase energy use by 3X. Ask your local utility company for their input on the best system configurations.
Solar Water Heating System
Solar water heating can use an Integrated Collector Storage system to preheat water. And solar water heaters are now eligible for some nice incentives in some states such as California.
Integrated Collection Storage systems (ICS) are best where there is no freeze danger.
You will get better performance from open look, active systems with a 40 square foot cllector and DC solar powered pump (for simple operation)
You can use a tankless gas backup for 77% efficiency.
What to watch for...beware of hot water recirculation systems without occupancy control. On demand systems can increase energy use by 3X. Ask your local utility company for their input on the best system configurations.
