Appalachian Log Homes have outstanding qualities that make them especially attractive for energy efficiency. Solid log walls have heat storage capability called "thermal mass", the ability of solid wood to hold energy and slowly release it back into your home. This explains why customers who live in log homes report substantially lower heating and cooling bills. Whether you’re heating to keep out the chill of icy winter storms, have windows thrown open to fresh spring and autumn breezes, or air conditioning against sultry, summer days, an Appalachian Log Home works with you to create ideal energy efficiency. Federal Tests Prove It! A 7-month test performed by the National Bureau of Standards proved that log homes are the energy leaders. Details of this study are available from your Appalachian representative. Appalachian’s 10-Year Warranty. We provide you with a comprehensive 10-year "Limited Warranty Agreement" underwritten by a trustworthy insurance company and at no additional charge. The plan enhances lender appeal and is transferable should you decide to sell your home.