One popular system is the Laing auto-circ system. This system is another luke-warm type system. The pump is located at the fixture where fast hot water is desired. The pump connects to the cold and hot water lines. A 110 volt outlet is needed, and the pump is supplied with a 6 foot cord. With this system, when the water at the fixture cools down to 85 degrees, the pump turn on and runs until the water at the fixture reaches 95 degrees, and then it shuts off.
You will have a broad range of pressure and power to use with commercial (professional) machines, but most of the time you won't need the highest setting. All too often people, homeowners and pros alike, will turn up the pressure thinking that more must be better. This isn't always the case.
Green (25 degree) - This is the primary washing nozzle. It is used for general cleaning when maximum power isn't needed. Think of this as a medium power nozzle. Also used for sweeping leaves, debris and caked dirt from driveways and sidewalks.
Plumbers can help you compare the advantages of solar systems, and even assist with comparative quotes and estimates of energy savings for different types of hot water services.
Fast hot water delivery systems, commonly known as hot water circulating or recirculating systems, provide a number of benefits. Obviously faster hot water means you don't have to wait as long for it, saving you time. Since these systems do not run water down the drain when delivering the hot water, they save a lot of water.
Q Hold the nozzle 12 inches from the siding. Any closer could do damage. If you want the spray closer to the surface, turn down the pressure and readjust when you are comfortable working at a closer distance.
Cleaning of ducts, filters, and faucets. I know this does not sound green but it is. Clean out your air ducts and your furnace filters. This will make your furnace work less and be more efficient. Clean your water filter, if you have one, and your faucet filters, if your filter and faucets are clean then the water system does not have to work as hard and it will increase your water pressure in the process.