Energy efficient products, equipment & energy saving calculators from homeenergysaver.com. Products that save money on electricity & energy bills. Energy Conservation Kits also available. Our HomeEnergySaver Savings Calculator instantly tells customers how much they will save by using a particular product. Savings are measured in dollars per year, annual CO2 emissions, and also in savings over product lifecycle, since some items that cost more upfront will significantly reduce utility bills over the course of several years. We also offer a database of BPI-accredited contractors who provide energy efficiency upgrade services.