ksanders
Moderator Emeritus
I would think reliable heaters should have minimal repair issues that are logging around 1000 hrs a year.
At 500 hours a year...it is almost underused to stay reliable.
My Wallas has required about 1 hr cleaning per year and a couple inexpensive parts over a 7 year period and now has a little over 3700 hours on it.
I would hope the ITR with its reputation would be just as reliable.
I just took one of my Wallace heaters out of service and replaced it with the new viking unit.
The old furnace had over 27,000 hours on it.
I’ll be replacing another one this year with similar hours.
What a GREAT service life. Yes like anything they need their maintenance, but to get that kind of life out of something is Amazing!