An energy efficient product is any type of consumer product that performs the same function as its non-energy efficient alternative, while saving money through smart energy technology and decisions. While energy efficient items don’t necessarily have special features, they all eliminate inefficient practices in traditional and commonly used household items.

Why buy an energy efficiency product?
Energy efficient products are designed to reduce your overall energy use, which reduces your energy bill and the amount of money you spend. By spending slightly more money up front to buy an energy efficient product, you will see returns accumulate over time as you shave small chunks off of your energy bill each month.
Choosing energy efficient devices and products has environmental benefits as well. Because these products reduce your energy use, they also reduce the amount of energy that needs to be generated through the burning of fossil fuels like coal and natural gas.

• Thermal Leak Detector
  Wonder why your heating bills are high even though you’ve done everything you can think of to make your home airtight? You could hire a pro to do a home energy audit, which will set you back $100 to $400. Or you could buy a thermal leak detector. Thermal Leak Detector infrared sensors to measure surface temperatures and helps homeowners track down power-draining drafts.
  
• Foam Sealant – Big Gap Filler
  Foam seal in your medium size gaps. You can use foam on wood, drywall, metal or plastics. Go around your house and see what openings do you have. Use foam to seal the gaps around water and waste pipes. Weather-tight seal stops air leakage and energy loss where pipes and vents exit through exterior walls.
  
• Water Heater Insulation
  Just like insulating your walls or roof, insulating your hot water tank is an easy and inexpensive way to improve energy efficiency and save you money each month. If your water tank is new, it is likely already insulated. If you have an older hot water tank, check to see if it has insulation with an R-value of at least 24. If not, consider insulating your water tank, which could reduce standby heat losses by 25%–45% and save you about 7%–16% in water heating costs—and should pay for itself in about a year.
  
• LED lighting
  The light-emitting diode (LED) is one of today’s most energy-efficient and rapidly-developing lighting technologies. Quality LED light bulbs last longer, are more durable, and offer comparable or better light quality than other types of lighting. An LED bulb can cut energy consumption by over 80% when compared to conventional light bulbs and can last up to 25% longer.
  

These gadgets vary in price, but all are able to save you enough money on the power bill to justify the purchase price. This is an easy way for him to upgrade the property with little effort and expense.