Air is leaking into your home through various cracks and holes that you didn't even know were there. Dr. Energy Saver's home check-up will discover where the most air is leaking out of your house and will then figure out the best solution to stop this air from leaking into and out of your house. If your home is not as warm in the winter or as cool in summer as you would like, Dr. Energy Saver can see if your home has air leakage.