I’ve been reading mixed opinions on the right frequency for flushing tankless water heaters — some say once a year is enough, while others recommend every six months, especially in areas with hard water. What have you all found works best for maintaining efficiency and longevity?
I’ve found that flushing every six months works best, especially with hard water. You’ll be surprised at how much sediment accumulates over time. Just make sure to use a good descaling solution like vinegar or a specific flush kit — you’ll feel the difference in efficiency.
this drives me nuts too… I’ve noticed that flushing once a year might leave too much sediment if you’re in a hard water area. Maybe try a good descaling solution when you do it — that can help with buildup.
Flushing every six months has worked well for me, especially in areas prone to buildup; i usually follow it up with a quick inspection of the filters, just to make sure everything’s functioning smoothly. Have you considered a specific descaler, or are you just planning to use vinegar?
@jmartin65, I’ve noticed that the type of descaler you use can really affect how well it cleans out the sediment… A good citric acid-based one worked wonders for me last time. Which products have you tried in the past?