Ask This Old House

Lightning Protection/Reverse Osmosis Water Filter

Season 13, Episode 20 of 26

Kevin and Roger meet with meteorologist Jim Cantore to discuss Jim's biggest weather fear: lightning. Roger heads to Orlando to see a lightning protection system installed. Richard helps a homeowner install a reverse osmosis filter for drinking water. And the guys ask, "What is it?"

Previously Aired

Day
Time
Channel
4/20/2015
1:30 p.m.
4/20/2015
7:30 p.m.
4/21/2015
4:30 a.m.
8/17/2015
1:30 p.m.
8/17/2015
7:30 p.m.
8/18/2015
4:30 a.m.
1/31/2022
9:30 p.m.
2/1/2022
8:30 a.m.
3/25/2022
9:30 p.m.
3/28/2022
8:30 a.m.
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