As winter winds down and the snow melts away, the start of spring is a great time to clean out the house and consider home improvements! If you’ve been meaning to maximize your home’s energy efficiency (and minimize your utility bill), WellHome is offering the chance to win $2,500 of energy efficiency upgrades for free. WellHome is an all-in-one service that helps you improve your home’s energy efficiency through performance assessments and improvements conducted by Building Performance Institute (BPI)-certified advisors. To enter this contest, type your zip code into the widget above or visit WellHome’s brand new Energy Savings app. Based on the Lawrence Berkley Home Energy Saver API, the application calculates your energy use and approximates how much money you could be saving by making energy efficiency improvements to your home.

The sweepstakes ends at 11:59 pm on March 20th and WellHome will select the grand prize winners from each branch on April 4th, 2011 — so enter today!

* The chances of winning the sweeps are actually quite high since there are so many prizes and so few entrants so far – so don’t miss out!