90% Of Israeli Homes Have Solar Water Heaters


I recently noted that Hawaii has enacted a law that requires all new homes to install solar water heaters. Eventually, Hawaii may have as many water heaters as Israel, where 90% of homes have solar water heaters installed. When viewed from above, the Jerusalem often glitters with the shine of the thousands of solar heaters that adorn rooftops.

Portable Air Conditioners

An efficient portable air conditioner can be a good alternative to window units or central AC

Electric fans are the most efficient cooling devices. Fans use far less power than air conditioners (see our recent review of the most efficient portable fan). But in hot and humid weather, air conditioning is a great relief. Cooling an entire house uses a lot of energy — it’s much more efficient to only cool the areas where you are …

Solar Water Heaters Now Mandatory In Hawaii

Hawaii has become the first state to require solar water heaters in new homes. The bill was signed into law by Governor Linda Lingle, a Republican. It requires the energy-saving systems in homes starting in 2010. It prohibits issuing building permits for single-family homes that do not have solar water heaters. Hawaii relies on imported fossil fuels more than any …

New High Power LED Floor Lamps

Koncept has released a new series of their I-Tower LED floor lamps. It’s good to see LED floor lamps becoming widely available. These lamps use the latest generation of high-power LEDs, which means they are brighter than the older I-Tower lamps, but they actually uses less power (8.8 watts). There are two models: a daylight version (~5500 Kelvin) and a …