Hi Everyone ~

Big iron FHW radiators in an old colonial in Mass. Oil burner in the
basement, just tuned up and checked last week. At the end of last
season, one of the upstairs radiator and one of the downstairs
radiators were slow to get hot for the 1st time in 7 years, which I
tell the service guy.

Serviceman checks them, they are bled and all the valves are open
wide. System is working fine as far as he can tell, but they are
still slow to get hot - he thinks the zone around the thermo is
getting hot too fast to allow the system time to reach the offending
radiators.

That seems strange, as they were fine for the past 7 years.

Any thoughts? Things to check?

Thanks,


Bluesman