Look I'm not an HVAC professional, so my time isn't worth what theirs' is, but I'll tell you this: help them to help you by giving them the tools they'll need (as a minimum) to give you an answer - instead of having them ask and waste everyone's time...things like: oil or gas? part of the world, boiler or furnace, hot air or water, old or new, serviced regularly or not, problem is new or recurring, model number, when it was installed and by who. What you've done or anything? sounds it makes if any... you get my point.
It's hard for them to peer into your basement let alone know what region you're in, so give them a break. After all, you're getting advice for a pretty good price, so do your part...
“The average American woman is about 25 pounds heavier than she was in 1960...Recognizing obesity as a disease will help change the way the medical community tackles this complex issue that affects approximately 1 in 3 Americans,”