Ask This Old House Season 21 Episodes

Find out where to watch Season 21 of Ask This Old House tonight
Overview TV Listings Seasons & Episodes Cast

Season 21 Episode Guide

Episode 1 - Water Heater Autopsy, Composting

Diagnosing why a retired water heater failed; compost bin for a net zero elementary school.
Episode 2 - EV Chargers, China Cabinet Repair

Heath explains three levels of EV chargers; Mark weighs pros and cons of different brick patterns.
Episode 3 - Doorbell Retrofit, Driveway Edging

Doorbell with new wiring; bottle traps; replacing a driveway's edging with cobblestones.
Episode 4 - Woodland Garden; Chimney Repairs

Planting a native woodland garden; patching cracked or chipped porcelain; common chimney problems.
Episode 5 - Wallpaper Restoration; Gutter Repairs

Restoring wallpaper; the basics of GFCI outlets; repairing gutters over a back patio.
Episode 6 - Sandstone Repair, Awning Install

Repairing sandstone steps; how to avoid being scammed by a solar company; installing an awning.
Episode 7 - Paint Tile, Water Tank Replacement

Replacing an old 40-gallon hot water tank; assessing woodpecker damage; painting over bathroom tile.
Episode 8 - Little Free Library

Building, painting and installing a Little Free Library for an elementary school.
Episode 9 - Cabinet Hardware, Breaker Trips

Installing kitchen cabinet hardware; types of wallpaper and tools to remove it.
Episode 10 - Pocket Door, Shaker Table

Installing an 1800s antique pocket door; a Shaker-style-inspired end table.
Episode 11 - Babyproofing, Septic Systems

Babyproofing a house with cabinet locks and baby gates; houseplants; how a septic system works.
Episode 12 - Neighbors Helping Neighbors

The team repairs a deck, constructs a patio and installs landscape lighting and new plantings.
Episode 13 - Fire Pit, Window Restoration

Repairing a deck; constructing a patio; installing landscape lighting and new plantings.
Episode 14 - Dimmer Switch, Clothes Rack

Repairing an antique window; interior paint finishes; developing a landscape design for a backyard.
Episode 15 - Shed Organization, Stone Walkway

Organizing a shed; importance of yearly service checks for furnaces; installing a pea stone walkway.
Episode 16 - Wetlands, Foundation Painting

Exploring wetlands; indoor air quality testing; repainting an exterior concrete foundation.
Episode 17 - Fireplace Painting, Bathtub Tray

Upgrading a fireplace; different landscape tools; building a bathtub tray out of zebrawood.
Episode 18 - Oven Ventilation, EV Charger

Replacing a leaking gas oven; creating a pollinator garden at home.
Episode 19 - Attic Insulation, Parking Spot

Insulating an attic; irrigation repairs; adding an asphalt parking spot.
Episode 20 - Transition Garden, Granite Post

Planting a sun and shade garden; the importance of gutter downspouts; engraving a granite post.
Episode 21 - Full Sun Garden, Floor Patch

Creating a backyard entrance; how to safely clean hardscaping; patching holes in wood floors.
Episode 22 - Cold Water Bathtub, Cornhole

Installing a reserve tank to fill a bathtub with hot water; cleaning up after painting projects.
Episode 23 - Flagstone Repairs, Tub Diverter

Repairing a leaky shower; different wire gauge sizes; repairing loose flagstone steps.
Episode 24 - Hand-Turned Spindle Replication

Replicating spiral-detailed spindles for a Queen Anne Row staircase in a 1900s Queen Anne Rowhouse.
Episode 25 - Circuit, Table Saw, Fireplace

Installing a basement circuit; table saw safety; installing a wood-burning insert.
Episode 26 - Sawmill, Bar Top

Milling a large piece of an old red oak; headband game; building a bar top.


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