We have an old (1939) 2 story brick colonial. Heating costs and comfort have always been a problem. We are looking for heating efficiency improvement options.
We have a one zone forced hot water (gas) system that feeds rectangular flat cast iron radiators. We set the thermostat at 68 degrees that barely keeps the first floor comfortable and the second floor chilly (61-63 degrees). We have installed double pane replacement windows (CertainTeed) but the house still feels drafty. We have to install plastic insulation sheets to help.
Are there suggestions / recommendations for options. Would adding a separate zone for the second floor be a option? We thought about using a gas stove fireplace insert. Would this be an efficient alternative? Can this produce enough BTU's and warm the house more evenly? Is it a cost efficient alternative?
We are scheduled for an energy efficiency audit from National Grid. We are open to their suggestions / recommendations with regard to improved insulation and upgrading to a higher efficiency furnace.
Any help from the TOH community is appreciated!