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Water Heaters, Appliances & Lighting - Hot Water Distribution/Plumbing


Solution Center Guides


Guide describing how to air seal around plumbing and other piping.

Guide describing how to install WaterSense® labeled bathroom and kitchen sink faucets and accessories.

This project completed a modeling evaluation of a hybrid gas water heater that combines a reduced capacity tankless unit with a downsized storage tank. This product would meet a significant market need by providing a higher efficiency gas water heater solution for retrofit applications while maintaining compatibility with the half-inch gas lines and standard B vents found in most homes. The TRNSYS simulation tool was used to model a base case 0.60 EF atmospheric gas storage water, a 0.82 EF non-condensing gas tankless water heater, an existing (high capacity) hybrid unit on the market, and an alternative hybrid unit with lower storage volume and reduced gas input requirements.

This measure guide describes effective ways to distribute hot water using core plumbing techniques.

This measure guide describes effective ways to distribute hot water using demand plumbing techniques. 

Guide describing gas-fired boilers and hot water heat distribution systems used for home heating.

Guide providing information about installing boiler controls in multifamily housing.

Guide describing oil-fired boilers and hot water heat distribution systems used for home heating.

Guide describing insulation of piping in exterior walls.

Guide describing service water pressure requirements for EPA's WaterSense Program.

Guide describing how to install WaterSense® labeled showerheads.