[Highland Park] Furnace help

Hello neighbors: When it rains it poors over here on Jackson Street. Long story short, we need a new furnace. M. Fava and Son have been recommended to us by a plumber recommended by one of you ..thank you! Has anyone had a furnace put in by this company or another company.  This is a bit of an emergency, as we have a CO issue and also a raw gas issue. Our furnace has been "red tagged" by the gas company.  I hate to do this twice but it really helped us out last time. Thanks. -Kathleen