Verification that Heated Pitot is working

"Dave S" wrote ...
Why would you have a heated pitot on a Cessna 172 or a piper arrow then?
Neither of THEM are certified for entry into known icing conditions, but
its nice to have the ability to safely fly OUT of them if you get INTO
them.

Dave,

A 172 can take a bit of icing and get away with it. Trust me and please
don't ask any questions I won't answer. In selecting a canard type
aircraft, the owner has to realize that there are some huge differences in
the way the horizontal controls react to airflow disturbances. In the case
of icing, he needs to take extreme measures to avoid those conditions. Even
if that means grounding the airplane for an extended period. That's what he
bought into when he got the airplane.

Having said that, if anyone knows of a canard icing study that says
differently please point me to it.

Rich