Ask This Old House: Season 21
Season 21 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Ask This Old House Season 20.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 21 Progress Shield
Water Heater Autopsy, Composting
Sep 29, 2022
The Ask This Old House team talks about why they enjoy working together; Richard cuts open a failed water heater, and Jenn shares her love of educating kids about the outdoors. The
EV Chargers, China Cabinet Repair
Oct 6, 2022
Heath explains the three levels of EV chargers and which scenarios they work best for; Mark breaks down different brick patterns, where they originate from, and their pros and cons
Doorbell Retrofit, Driveway Edging
Oct 13, 2022
In this episode, Heath installs a doorbell with new wiring, Richard explains bottle traps, and Mark replaces a homeowner’s brick driveway edging with cobblestones.
Woodland Garden, Chimney Repairs
Oct 20, 2022
Jenn plants a native woodland garden; Mauro shows how to patch cracked or chipped porcelain; Mark explains common chimney problems and then shows how to repair a chimney step by st
Wallpaper Restore, Gutter Repairs
Oct 27, 2022
Kevin O'Connor visits the Franklin Pierce Homestead in New Hampshire to learn about the restoration of a historic, French wallpaper from the 19th century; Heath Eastman explains th
Sandstone Repair, Awning Installation
Nov 3, 2022
Mark travels to Dallas, Texas to repair sandstone steps; Ross explains how to pick a solar plan how to avoid being scammed by a solar company; Nathan helps a homeowner install an a
Paint Bathroom Tile, Hot Water Tank Replacement
Nov 10, 2022
Richard helps remove an old 40-gallon hot water tank; Heath shares safety tips for holiday light decoration; Tom explains how to identify, repair, and prevent woodpecker damage; Ma
Little Free Library
Nov 17, 2022
Tom and Kevin team up to build a Little Free Library for an elementary school; Tom and his daughter, Kate, paint and decorate it to look like a school bus. Tom and Kevin meet up wi
Install Cabinet Hardware, Breaker Trips
Jan 5, 2023
The team shares the professions they might have pursued; Mauro discusses types of wallpaper and tools to remove it; Heath explains how different amped receptacles can cause breaker
Antique Pocket Door, Shaker End Table
Jan 12, 2023
Nathan and his dad, Bill, help install an 1800s pocket door with reclaimed hardware; Ross explains the technological advancements of induction cooktops; Kevin meets maker Char Mill
Baby Proofing, Septic Systems
Jan 19, 2023
Nathan, Heath, and Mauro help a homeowner baby proof her house by replacing old receptacles and installing cabinet locks, and baby gates; Jenn breaks down the basics of caring for
Neighbors Helping Neighbors
Jan 26, 2023
In a special episode, the team partner with Rebuilding Together Boston. With the help of the Ask This Old House extended family and volunteers, the crew repair a deck, construct a
Fire Pit Plan, Window Restoration
Feb 2, 2023
Tom repairs a homeowner's antique window; Mauro talks through interior paint finishes; Jenn and Mark travel to Georgia to help a homeowner develop a landscape design plan for her s
Dimmer Switch Troubleshooting, Clothes Rack
Feb 9, 2023
Jenn shares why she loves bringing her dog to work; Heath helps a homeowner troubleshoot a strobing dimmer switch; Ross explains the benefits of smart bath ventilation; Tom builds
Shed Organization, Pea Stone Walkway
Mar 23, 2023
Nathan heads to Texas to help a mom of six organize her family shed; Richard emphasizes the importance of a yearly service call for furnaces; Mark installs a pea stone walkway to m
Wetlands; Foundation Painting
Mar 30, 2023
Jenn works with a wetlands specialist; Ask This Old House profiles general contractor Zach Dettmore in a new segment; Ross discusses Indoor Air Quality testing; Mauro teaches a hom
Fireplace Painting; Bathtub Tray
Apr 6, 2023
Mauro helps a homeowner upgrade a fireplace; Jenn introduces landscape contractor Lee Gilliam, and together they discuss different landscape tools and how to maintain them for Spri
Oven Ventilation; Wireless EV Charger
Apr 13, 2023
Richard helps a homeowner replace a leaking gas oven; Jenn and Kevin discuss how to create a pollinator garden at home; in Future House, Ross learns how wireless electricity techno
Attic Insulation, Asphalt Parking Spot
Apr 20, 2023
Ross helps a homeowner dealing with ice dams decide whether to insulate from his attic roof rafters or the attic floor; Richard shares tips on irrigation repairs; Mark expands a dr
Transition Garden, Granite Post Sign
Apr 27, 2023
Jenn helps a homeowner transform a small sun and shade backyard with a new garden; Tom explains the importance of gutter downspouts; Mark adds street visibility to a farm by remoun
Full Sun Garden, Radiator Floor Patch
May 4, 2023
Jenn creates a thoughtful backyard entrance; Mark shares how to safely clean hardscaping on different types of common hardscape materials; Tom shows how to patch holes in wood floo
Cold Water Bathtub, Cornhole
May 11, 2023
Richard helps a homeowner dealing with cold bath water by installing a reserve tank to fill the bathtub fully with hot water; Mauro shares his favorite tips for cleaning up after p
Flagstone Repairs, Tub Diverter
May 18, 2023
Richard troubleshoots why a homeowner's shower leaks when the tub is running and makes the necessary repairs, then in studio, Richard explains why it was a unique repair; Heath dee
Hand-Turned Spindle, Replication
May 25, 2023
Tom Silva is rarely stumped. But when a homeowner reached out about a missing hand-turned spindle in the staircase of her 1900s Queen Anne Rowhouse, Tom attempts to replicate the s
Circuit, Table Saw, Fireplace Insert
Jun 15, 2023
Heath helps a homeowner whose kitchen breaker trips when the basement humidifier is running by installing a new basement circuit; Tom showcases the importance of table saw safety b
Sawmill, Bar Top
Jun 22, 2023
Nathan mills a large piece of an old red oak tree. The team come together to see if they can guess each other's cards in a special Ask This Old House headband game; Tom and Nathan