![The Best of Ask This Old House: 44 Common Household Projects](https://image.tmdb.org/t/p/w342/rajoBOjIXyCzqa6d3RXRn7KgQLh.jpg)
6 Season
44 Episode
The Best of Ask This Old House: 44 Common Household Projects - Season 2 Episode 4 Installing a Water-saving Toilet
Richard replaces an old 3.5 gallons per flush (GPF) toilet with a new, state-of-the-art dual-flushing unit that uses 0.9 GPF for liquids and 1.6 GPF for solids.