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It varies by manufacturer and model. Carbon filters generally last anywhere from two to six months; please refer to the manufacturer's manual.

The germicidal energy of ultraviolet light destroys harmful microorganisms by attacking their genetic core (DNA). This powerful dose of UV light eliminates their ability to reproduce, and the organisms simply die.

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No, a UV system able to treat the water for a typical house will consume about the same amount of energy as a 60-watt light bulb.

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To safely reduce the amount of contaminants, including lead, in your drinking water, look for filters certified by the National Sanitation Foundation with NSF-53.

Home Depot carries seven types of water filtration systems: whole house water filters, UV water filters, reverse osmosis water filters, fridge/icemaker water filters, faucet-mounted water filters and water filtration pitchers that use carbon.

Why should you filter your water? In addition to producing better-tasting water, a home water filtration system can reduce the following contaminants that may be present in your family's drinking water.

The tekmarNet® 4 Wiring Center 316 is designed to provide a zoning solution for heating systems. It can be used in applications ranging from baseboard zones, to radiant heating zones. This control energizes up to 4 zone pumps. It is capable of providing power for upto 4 tekmarNet® 4 or stand alone thermostats and energizing their respective 115 V (ac) zones, as well as providing an end switch closure to enable an external device such as a boiler.

POU - Point of use (installed on tap, undersink, refrigerator water line or pitcher) POE - Point of entry (installed on main water line)

Generally, NSF 42 certified water filters address aesthetic claims such as taste and odour whereas NSF 53 certified water filters are known to address contaminants that may cause adverse health effects such as metals including lead.