Ask This Old House

Tom and Kevin head to Montana to build an accessible home gym for a Navy SEAL injured in Afghanistan. Scott helps a homeowner replace a broken doorbell chime. And Richard explains PVC pipe terminology.

Tom heads to Salem, MA to installs a bookshelf that doubles as a hidden doorway. Scott Caron explains how he does almost any electrical project with just two tools. Richard installs a house hydrant to replace a leaky outdoor spigot. And the guys ask, "What is it?"

Actor Nick Offerman stops by the barn to play "What is it?" and give some advice on woodworking. Tom creates a bookshelf made of black pipe in "Build It." And landscape designer Jenn Nawada helps to install a pondless waterfall.

Scott Caron helps a Texas homeowner get the party started by installing some fiesta lights. Landscape designer Jenn Nawada gives a tutorial on the best tools for first-time gardeners. Kevin walks through the best options for a home fireplace. And the guys ask, "What is it?"

Tom installs a salvaged door into an existing opening. Richard explains how a plumbing trap can lose water. And Roger gets a lesson on the best way to grow culinary herbs in your own house.

Richard installs a washer and dryer to help a homeowner with his laundry. Tom explains the proper use of a drill-driver. And Scott adds an overhead light to a dimly lit dining room.

Roger heads to Idaho to learn about growing potatoes. Kevin meets with The Weather Channel's Jim Cantore to discuss home weather stations. Scott Caron installs track lighting and lights that double as speakers. And the guys ask, "What is it?"

Tom is ready to patch up an old hardwood floor and make it look seamless. Richard reveals the best methods to unclog a bathroom sink. Landscape designer Jenn Nawada heads to Washington, DC to plant a garden for birds and pollinators. And the guys ask, "What is it?"

Scott heads to St. Paul to wire a light fixture to match the aesthetic of an antique home. Richard makes an old tub safe by installing an overflow. Tom explains what every homeowner should have for insulation when it comes to R-value. And the guys ask "What Is It?"

Kevin heads to Fort Worth, Texas to help a homeowner reignite her old gas fireplace. Scott Caron installs an exhaust fan to eliminate odors in a kitchen. And Tom gives a step-by-step tutorial on roof shingling.

Tom and Kevin head to Connecticut to construct a back yard chicken coop in "Build It." Jenn Nawada visits a Vermont maple syrup farm to learn how it's made. Christopher Kimball from America's Test Kitchen stops by to break down the best and worst maple syrup. And Scott explains how to choose the right USB outlet.

Tom trims a coat closet to include a shelf and hanger pole and then installs a pre-hung door. Richard explains why a toilet may be leaking. And Scott gives an old Philadelphia church a new look with an outdoor wall sconce.

Kevin uses a smartphone app to help a homeowner turn his front door deadbolt into an electronic entrance. Scott installs a television outdoors for a little open-air entertainment. And it's a white sphere with blue holes, but "What is it?"

Tom checks out street caves in Saint Paul and then replaces a rickety attic staircase in Minneapolis. Richard gives a tutorial on the best blowtorches. Kevin shows a homeowner how to use paint to makeover an old kitchen.

Scott heads to South Dakota to install a post light. Richard is in Delaware to replace a pedestal sink. Landscape designer Jenn Nawada explains how to make succulent plants into a piece of art. And it's a wand with three probes. "What is it?"

Roger heads to Cape Cod to transform a patch of grass into a lawn, you can drive on! In "Build It," Tom and Kevin use reclaimed oak wood to create a coffee table. Richard explains how to avoid frozen pipes in the winter months. And the guys ask "What Is It?"

In this winter weather special, Scott offers an electrical solution to ice dams. Kevin talks climate change with Weather Channel Meteorologist Jim Cantore. Roger has a few tips on snow blower maintenance. And Richard goes over furnace upkeep.

Kevin visits Delaware to help a new mother childproof her home. Richard uses his skill to fix an under counter mount sink. And Scott gives Kevin a tutorial on the latest voltage testers.

Kevin heads to a brewery to learn how to make his own beer at home. Bridget Lancaster from America's Test Kitchen stops by with a lesson on ales versus lagers. Tom is in Baltimore to help install a do-it-yourself rain barrel. And Richard has advice on what not to put in your disposers.

Roger heads to Texas for a lesson on planting a butterfly garden. Tom maps out the best tools for woodworking beginners. And Scott helps a homeowner find illumination in her closet.

Richard travels to Atlanta to replace a vessel sink with a self-rimming sink. Scott installs a motion sensor security light in a driveway. And the guys ask "What it it?"

Jenn shows homeowners how to use organic waste to create compost. Richard checks out a troublesome steam boiler to find out why it's losing so much water. And the guys ask "What is it?"

In a special episode of Ask This Old House, Richard and Kevin take a trip to Germany to discover how the country has become a world leader in energy efficiency. They find answers in the mechanical rooms of a home and a bed and breakfast. Plus, Kevin and Ross head to Texas to install a residential wind turbine in Texas.

A troublesome asphalt driveway pothole is giving one homeowner fits. Roger shows how to clean out the pothole and repair it. In a "Build It" segment, watch Tom and Kevin find inspiration in an old Shaker table design and bring history to life. Watch Scott turn a vintage railroad lantern into a modern electric lamp. And a black metal box has the guys asking "What Is It?"