Great question. As the real estate values continue to decline, more people are upgrading their current homes rather than buying another home. It’s common knowledge in the contractors’ media outlets that rate of investment on other projects such a new kitchen or bathrooms only are getting ROI respectively, from 67 cents down to 47 cents per dollar spent on those upgrades. Whereas given the uncertain energy situation, you can have a 2-5 year rate of return, less maintenance on HVAC equipment, plus hedging the future cost of energy bills. These savings can account up to thousands in a relatively short time.