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