Home Energy Upgrades are viable on-site modifications aimed at making residential houses more efficient, comfortable and sustainable. These improvements may include relatively easy tasks, such as air sealing, installing LED lighting, and using programmable thermostats, or more intensive ones, like improving the insulation or adding more energy efficient windows, modernizing heating and cooling systems or incorporating some form of renewable energy source, like solar panels. The gist of all these efforts is that Home Energy Upgrades allow homeowners to use less energy, pay less in utility bills and enhance comfort within their homes by keeping temperatures stable and by enhancing the quality of air inside their homes. They also contribute to environmental sustainability through the reduction of greenhouse gas emissions and the consumption of fossil fuels, and they are a good long-term investment that households do not regret.