My 3 1/2 year old Insinkerator insta-hot water dispenser (model H770)
sprang a leak in the plastic case. I can't even see the crack but a soap
water bubble test while pressurizing the tank shows it is there. It seems
to be near or along a 'rib' of the plastic tank.
Can anyone suggest an easily available high temp, waterproof glue or patch
material to try a repair? It's hard plastic and obviously stays quite hot
all the time with 190+ degree water in it.
I see the newer models have a stainless steel tank. The company says it is
to stay competitive. I wonder if that's the real reason.
Thanks for any repair suggestions before having to purchase a new one.
1: it's an unknown plastic, and without knowing the composition, any
patching material is just a guess. there are plastics that nothing sticks to
2: what would be the cost to you if it splits and continues running in your
house whilst you're out?
cave creek, az
You could repair it with a fiberglass epoxy composite patch, but the
materials and techniques are far beyond the average DIY capabilities.
The common sense recourse is to eliminate your stress by replacing
the failed unit. Almost a no-brainer considering the new design is
better suited to the job. HTH
I'd say you'd be miles ahead replacing it.
If one crack developed over time, who's to say another one won't occur a
couple of months after you spend all sorts of time patching the present one.
I just replaced our kithen sink's Insinkerator Insta-Hot when I noticed
a wet spot on the cabinet floor beneath it. That bugger had served us
faithfully for at least 21 years.
I couldn't resist opening the old one up before I chucked it to see how
badly shot it was. It had a copper tank in it, so they must have
switched to plastic at some time after ours was made and then went over
to stainless steel, maybe because of too many problems with the plastic
Thanks, everyone. All good advice. Especially the comment about springing
more leaks after the first one was repaired.
Also interesting (VERY interesting) about the copper tank then the plastic
then the steel one. They will never admit to a problem but I'm wondering...
I ordered a new one. At least they gave me a better price than I could
find anywhere else. (After all, it was under four years old!) I was hoping
to fix and reuse the old one somewhere, some how, but you are all wiser
than I so I am going to listen to your good advice and toss it.
It seems that you too are wiser now. If not, you can always keep this
"Joy patches her "insta-blah-blah water heater" with the newest
possible space age polymer bonding material. She stands back in
amazement and pats herself on the back at how wonderful of a job she
has done all on her own. She brags about it to her co-workers the next
day at work. On Sunday she tells all of her church members how well
she did. She even tells her friends and relatives how easily it was
and how proud she was of herself.
One month later she leaves for a 2 week vacation to (California,
Florida, Bahamahs, Europe, etc). Ater 2 weeks she returns home to find
her entire basement flooded, her kitchen sprayed with water, drywall
falling off the studs, ceilings caved in and water running out the
doors and window sills.
NOW, how much did you save on that epoxy repair?
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