Ask This Old HouseSeason 122013 · 26 episodesEpisodes1Replacing an Old Door; Hot Water Without WaitingThe twelfth season of Ask This Old House begins with Kevin teaching the guys how to use Twitter. Tom replaces an old, rusted bulkhead door. Richard discusses several ways to get hot water without waiting. And the guys ask "What Is It?"2Building a Garden Bed in New Mexico; Repairing a Leaky ToiletRoger builds a garden bed for chile pepper plants in New Mexico. Richard repairs a leaky toilet with a worn out flange. And the guys ask "What Is It?"3Hands-Free Kitchen Faucet; Channel Drain to Divert RainwaterRichard replaces a leaking kitchen faucet with a new hands-free model. Kevin explains rechargeable batteries. Roger installs a channel drain in a driveway to divert rainwater. And the guys ask "What Is It?"4Pre-Hung Front Door; Big Containers for Screening and ShadingInstalling a pre-hung exterior door. How to use large containers for shading around the home.5Shade Sail Over a Deck in Santa Fe; Hybrid Water HeaterA member of the team learns about styles prevalent in Santa Fe, N.M. Roger teaches the proper way to use a wheelbarrow. How to install a shade sail to a deck. Richard installs a hybrid water heater.6Leaky Skylight; Repairing a Noisy ToiletTommy replaces a leaky skylight. Richard quiets a noisy toilet.7Planting a Maple Tree; Working on an Underground BathroomRoger transplants a specimen maple tree. Fixing an underground master bathroom.8Preparing for Severe WeatherHow to make improvements to make your home safer during a tornado, hurricane and power failure. A meteorologist describes how weather is changing and what homeowners should do to prepare.9Uses for a Router; Replacing an Air Conditioning UnitTom demonstrates many uses for a router. Richard replaces an air conditioning unit that freezes when it runs. And the guys ask "What Is It?"10Irrigation System; Installing a Heat-Pump Water HeaterInstalling an irrigation system designed for a desert climate; new style of heat-pump water heater; reusing an old garden hose reel.11Crown Molding in Seattle; Replacing a Rotted Fence PostInstalling crown molding; replacing a rotted fence post; difference between cement, concrete and mortar.12House Humidifier in North Carolina; Hardwired Smoke DetectorInstalling a Whole-House Humidifier in North Carolina; Installing Hardwired Smoke and Carbon Monoxide Detectors.13Waffle Gardening in Santa Fe; Mechanical Dampers for Air Heating"Waffle Gardening" in Santa Fe; Adding Mechanical Dampers to a Forced-Air Heating System14Rotted Porch Post; Dealing with High Indoor HumidityRepairing a Rotted Porch Post; Dealing With High Indoor Humidity15Fitting a Mattress up a Staircase; Repairing a Light-Switch in SeattleFitting a Mattress Up a Narrow Staircase; Repairing a Light-Switch in Seattle16Clawfoot Tub with Shower; Installing a Permanent Fire EscapeInstalling a Clawfoot Tub With Shower; Installing a Permanent Fire Escape in a Bedroom17High Tunnel Greenhouse; Converting Recessed Lights Into PendantsBuilding a high tunnel greenhouse; converting three recessed kitchen lights into three pendants. Selecting pliers and wrenches.18Quieting a Squealing Shower; A DIY-Friendly Security SystemQuieting a Squealing Shower; A DIY-Friendly Security System and Video Camera19Plants from Seed; Outdoor Hose Spigot; Movable Kitchen IslandHow to start plants from seed. How to prevent an outdoor hose spigot from freezing. How to build a movable kitchen island.20Planting a Low-Cost Privacy Screen; Sealing DuctworkPlanting a low-cost privacy screen; and sealing ductwork without removing the walls.21Baseboard Hole-Patching; Maintaining a Lawn MowerReplacing a shower valve; repairing damage to a baseboard; keeping a lawn mower in excellent shape.22Celebrating 300 EpisodesCelebrating 300 episodes of "Ask This Old House" with a review of favorite moments.23Building a Simple Table; Getting Rid of Tree StumpsBuilding a simple table from solid fir; removing tree stumps; solar energy.24Accessible Home; Modifying a Bathroom and Dangerous StaircaseModifying a bathroom and stairs to make them wheelchair accessible; rebuilding dangerous staircase.25Replacing Fluorescent Under Cabinet Lights; Working with ConcreteReplacing fluorescent under-cabinet lights with LED fixtures; working with concrete.26All About Kitchen Renovations; Chef Michael SymonInstalling new cabinets; countertop options; the home and restaurant kitchens of chef Michael Symon.Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 9Season 10Season 11Season 13Season 14Season 15Season 16Season 17Season 18Season 19Season 20Season 21Season 22Season 23Season 24Season 25