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- Season 0 2019-08-17
- Season 1 1979-01-01
- Season 2 1981-01-01
- Season 3 1982-01-01
- Season 4 1982-05-15
- Season 5 1983-10-01
- Season 6 1984-10-05
- Season 7 1985-10-10
- Season 8 1986-10-16
- Season 9 1987-01-01
- Season 10 1988-09-01
- Season 11 1989-01-01
- Season 12 1990-09-01
- Season 13 1991-09-05
- Season 14 1992-01-01
- Season 15 1993-09-02
- Season 16 1994-01-01
- Season 17 1995-09-30
- Season 18 1996-09-28
- Season 19 1997-09-27
- Season 20 1998-09-26
- Season 21 1999-09-25
- Season 22 2000-09-23
- Season 23 2001-09-22
- Season 24 2002-10-10
- Season 25 2003-10-11
- Season 26 2004-10-09
- Season 27 2005-10-06
- Season 28 2006-10-05
- Season 29 2007-10-04
- Season 30 2008-10-02
- Season 31 2009-10-10
- Season 32 2010-10-07
- Season 33 2011-10-06
- Season 34 2012-10-04
- Season 35 2013-10-05
- Season 36 2014-10-04
- Season 37 2015-10-03
- Season 38 2016-09-30
- Season 39 2017-10-05
- Season 40 2018-10-06
- Season 41 2019-10-05
- Season 42 2020-10-04
- Season 43 2021-09-30
- Season 44 2022-09-29
- Season 45 2023-09-28
- Season 46 2024-09-26
Season 46 Episode
- Season 27 Cambridge | A Modern Old House
- Season 27 Cambridge | Modernize, Again
- Season 27 Cambridge | Worst-Case Scenario
- Season 27 Cambridge | Longfellow's House
- Season 27 Cambridge | The Cost of Poor Workmanship
- Season 27 Cambridge | High-Tech Heating and Cooling
- Season 27 Cambridge | Water Damage Brings Opportunity
- Season 27 Cambridge | Real Stone, Flat Roof
- Season 27 Cambridge | A Water-Feature Welcome
- Season 27 Cambridge | Creating a Dramatic Entryway
- Season 27 Cambridge | Rain Slows Some Progress
- Season 27 Cambridge | Dramatic Staircase
- Season 27 Cambridge | Interior Finishes Begin
- Season 27 Cambridge | Fine Craftsmanship
- Season 27 Cambridge | Contemporary Design Elements
- Season 27 Cambridge | Modern Conveniences in a Modern Home
- Season 27 Cambridge | Things Are Coming Together
- Season 27 Cambridge | A Red Box Becomes a Show House
- Season 27 Washington, DC | Reviving an Abandoned 1879 Rowhouse
- Season 27 Washington, DC | Setbacks Open Up New Ideas
- Season 27 Washington, DC | Honoring the Past, Looking Toward the Future
- Season 27 Washington, DC | A Rebuilt Structure
- Season 27 Washington, DC | Beautiful Historic Restorations
- Season 27 Washington, DC | The Outside is Shaping Up, Too
- Season 27 Washington, DC | Surface Finishes
- Season 27 Washington, DC | A Home Saved
This Old House - Season 27 Episode 6 Cambridge | High-Tech Heating and Cooling
5.20 30 minutes Master carpenter Norm Abram and host Kevin O'Connor open the show at Cambridge Common — the city's oldest public open space and a center of rebel activity in the early years of the American Revolution. Back at the project house, Kevin lends Norm and general contractor Tom Silva a hand framing in the "not quite flat" roof above the library — it has a slight pitch to shed water. Plumbing and heating expert Richard Trethewey shows Kevin a new software program that allows him to design the HVAC system on a laptop and run heat loss scenarios for the house while changing variables like windows, insulation, and various kinds of ductwork and heating. Landscape contractor Roger Cook brings homeowner George Mabry to one of the largest stone yards on the East coast to begin selecting hardscape materials for the landscape.
