This Old House plumbing and heating expert Richard Trethewey explains how to capture the heat buried deep in the ground. Click here to SUBSCRIBE to the official This Old House YouTube channel: www.youtube.com/subscription_center?add_user=thisoldhouse How to Install Weather-Sensitive Heating Controls: www.youtube.com/watch?v=NIsvYXdeM2g&list=PLkJADc1qDrr_0NxtmzECiOWkr5de82kXV&index=27 How to Maintain an Electric Water Heater: www.youtube.com/watch?v=cTPSoUKiKRs&list=PLkJADc1qDrr_0NxtmzECiOWkr5de82kXV&index=79 How to Flush a Water Heater: www.youtube.com/watch?v=PjwENIksoWE&index=211&list=PLkJADc1qDrr_0NxtmzECiOWkr5de82kXV Follow This Old House: Facebook: www.facebook.com/ThisOldHouse Twitter: twitter.com/thisoldhouse Pinterest: www.pinterest.com/thisoldhouse/ G+: plus.google.com/+thisoldhouse/posts Instagram: instagram.com/thisoldhouse Tumblr: thisoldhouse.tumblr.com/