My home heating system is an oil fired, forced hot water, baseboard type.
About a week ago, it was very cold and with the thermostat set
at 70 degrees, the room temp was struggling to get past 60.
The furnace would run for a few minutes and then kick off for
a little while and then repeat this cycle.
We had this behavior in the past to the point that it would
just stop running.
So a call to the fuel co. for a service and cleaning and maybe
a filter change, and we would be back in business.
This time around the service guy checked the system, and said
that everything seemed to be in order, and that due to the cold snap
we were having, that the system was having a hard time keeping up.
The water temp was set to 180 degrees and when the water temp dropped to 140 degrees the furnace would fire again, and cycle like this
as it needed to.
So he said that all that he could really do would be to set the
water temp up to 200 degrees and so he did.
That was at about 8:30AM.
The room temp got to 70 degrees at about 2:30 in the afternoon.
Everything seemed fine until this morning when the furnace kicked on
and the water in the pipes started to sort of gurgle for a little while
and then would quite down.
We turned the heat off this morning, as it was near 50 degrees outside today, and turned it back on in the evening.
When it got turned back on, it started making the gurgling again
and then got quite again as before.
I've never heard the system do this before in the 10 years
that we have been here.
I dont get what's happening with the system.
The only change is the 200 degree water temp.
It sounds like there is air in the system, but I have no
clue how it got there? Or if it is indicitave of a problem.
Anyone care to hazard a guess?