Season
- Season 1 2002-10-10
- Season 2 2003-10-09
- Season 3 2004-10-04
- Season 4 2005-10-06
- Season 5 2006-10-05
- Season 6 2007-10-04
- Season 7 2008-10-02
- Season 8 2009-10-08
- Season 9 2010-10-07
- Season 10 2011-10-06
- Season 11 2012-10-04
- Season 12 2013-10-05
- Season 13 2014-10-02
- Season 14 2015-10-03
- Season 15 2016-10-01
- Season 16 2017-10-07
- Season 17 2018-10-04
- Season 18 2019-10-05
- Season 19 2020-10-01
- Season 20 2021-09-30
- Season 21 2022-09-29
- Season 22 2023-09-28
- Season 23 2024-09-26
Season 23 Episode
- Season 9 Water and Drain Lines for a Sink; Rescuing Improperly Planted Trees
- Season 9 Balusters an a Staircase; Laying a Stone Footpath
- Season 9 Attic Storage Space; Repairing a Broken Doorbell
- Season 9 Repairing a Rotted Windowsill; Installing an Outdoor Faucet
- Season 9 Wheelchair Accessible Raised Garden Bed; Fixing a Leaky Roof
- Season 9 Choosing Groundcover; Installing Hydronic Baseboard Heaters
- Season 9 Circular Patio and Fire Pit; Repairing Brick Stairs
- Season 9 Energy-Efficient Storm Door; Cutting and Soldering Copper Pipes
- Season 9 Uneven Stone Patio; Repainting a Rusty Bulkhead Door
- Season 9 Hot Water Radiant Tubing; Joint Compound on Drywall Corners
- Season 9 Loose Carpeting on a Staircase; Tools for Digging; Recessed Lights
- Season 9 Forced-Air Furnace and Air Conditioning; Damaged Oak Flooring
- Season 9 Sharpening Chains; Fixing a Leaky Rain Gutter; Fiberglass Bathtub
- Season 9 Second Bathroom Sink; Large Crack in a Concrete Block Foundation
- Season 9 Lawn Mowing; Building a Backyard Deck
- Season 9 Completing a Backyard Deck; Hidden Deck-Fastening Systems
- Season 9 Rainwater from Gutters; Pliers; Insulating an Attic Floor
- Season 9 Painting Interior Walls; Water Heater with a Valve Preventing Floods
- Season 9 Narrow Garden Bed; Workshop in Memphis; Wood-Burning Insert
- Season 9 Outdoor Outlets; Flower Bulbs; Graceland; Worn-Out Cabinets
- Season 9 Solar Water Heating; Electrical Safety Devices; Support Posts
- Season 9 Antique Door Hardware; Geothermal Home Heating and Cooling
- Season 9 Splitting Firewood; Paintbrushes; Connecting a Bar Sink to a Sewer
- Season 9 Tool Storage Cabinet; Protecting a House From Flood Damage
- Season 9 Removing Vinyl; Vintage House Parts; Eliminating Gurgling Sounds
- Season 9 Yard Clean Up; Installing Carpet Tiles
Ask This Old House - Season 9 Episode 22 Antique Door Hardware; Geothermal Home Heating and Cooling
4.40 30 minutes Host Kevin O'Connor and general contractor Tom Silva demonstrate how to select and install antique and reproduction door hardware. Then, Kevin and Tom, along with plumbing and heating expert Richard Trethewey and landscaping contractor Roger Cook ask, "What is it?" Afterward, Richard shows a homeowner how a geothermal home heating and cooling system works.
