Ask This Old House

Tom travels to Los Angeles to install an electric whole house fan in an attic. Roger and Jenn work with students to build a raised-bed vegetable garden. Richard explains new water heater regulations.

Scott helps a homeowner rewire the electrical connections to his detached garage. Tommy shows a new mom how to use special screws to quite a squeaky floor. Roger explains the best options for chainsaw safety.

A troublesome asphalt driveway pothole is giving one homeowner fits. Watch Tom and Kevin find inspiration in an old Shaker table design and bring history to life. Scott turns a vintage railroad lantern into a modern electric lamp.

Richard and Kevin take a trip to Germany to discover how the country has become a world leader in energy efficiency. Plus, Kevin and Ross head to Texas to install a residential wind turbine in Texas.

Jenn shows homeowners how to use organic waste to create soil for gardening. Richard is ready to solve a basement mystery: Why is a steam boiler losing so much water? And a metal cylinder with a clamp has the guys asking, “What is it?”

Richard is in Atlanta to help a homeowner replace a vessel sink with a self-rimming one. Scott brightens up a driveway by installing a motion-activated, security light fixture.

Roger heads to Texas for a lesson on planting a butterfly garden. Tom maps out the best tools for beginner woodworkers. And Scott helps a homeowner illuminate her closet.

Kevin learns how to make beer at home. Bridget Lancaster from America’s Test Kitchen stops by with a lesson on ales versus lagers. Tom helps install a do-it-yourself rain barrel. Richard has advice on what not to put in your disposer.

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

Scott Caron offers an electrical solution to ice dams. Kevin talks climate change with Weather Channel meteorologist Jim Cantore. Roger shares a few tips on snowblower maintenance. And Richard goes over furnace upkeep.

Roger heads to Cape Cod to transform a patch of grass into a lawn you can drive on! Tom and Kevin use reclaimed oak wood to create a coffee table. Richard explains how to keep pipes from freezing in the winter months.

Scott Caron 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.

Tom checks out street caves in St. Paul, Minnesota, 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 make over an old kitchen.

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

Tom trims a coat closet to include a shelf and hanger pole and then installs a prehung door. Richard explores what’s making a toilet leak. And Scott Caron gives a Philadelphia church turned residence a new look with outdoor lighting.

Tom and Kevin construct a backyard chicken coop. Jenn Nawada visits Vermont to learn how maple syrup is made. Christopher Kimball stops by to tell how maple syrup is graded. And Scott explains how to choose the right USB outlet.

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.

Scott Caron heads to St. Paul, MN, to wire a light fixture in 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.

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 plants a garden for birds and pollinators.

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.

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

Tom installs a salvaged door in 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.

Scott Caron helps a Texas homeowner get the party started by installing fiesta lights. Landscape designer Jenn Nawada gives a tutorial on the best tools for first-time gardeners. Kevin explores the best options for a home fireplace.

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.

Tom heads to Salem, MA, to install a bookshelf that doubles as a hidden doorway. Scott Caron explains how two tools are all he needs to do many electrical projects. Richard installs a house hydrant to replace a leaky outdoor spigot.