Product review (5 stars): Luckily I have several buckets I stacked 2 under the 5 gallon bucket to flush my Rinnai Tankless Water Heater and worked just fi
As advertised.  However, it was a little short for my use and I wish I had ordered the a 5-6 feet version for flushing Rinnai Tankless water heater.  Luckily I have several buckets I stacked 2 under the 5 gallon bucket to flush my Rinnai Tankless Water Heater  and I've helped a couple of friends living nearby to flush their water heaters as well. These hoses worked just fine with good seal but I recommend 5-6 feet version instead.