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In need of heating system help
Hi - new to the forum and heating systems in general and trying to digest as much of the great information as possible.
We are planning an extensive renovation on a 3300 sq ft house built in 1950s in CT with an oil hot water boiler and fin/tube radiators; entire house is currently one zone/loop. From Dec 20th of last year through the end of the heating season I think we burned ~1,500 gallons of oil. (Current boiler is a Burnham V8 series PV85WT - TBWF from 2003 and was rebuilt? recently according to our service provider) House currently has separate multi-zone central AC installed by previous owner ~2yrs ago. As part of the renovation of the house we will be removing the radiators, but are unsure of what changes to the heating system to make. In addition we will be replacing all windows, foaming the house and making other improvements to tighten the envelope. In the end we will be around ~4500 sq ft after an addition and bringing the attic into the finished space.
Our options for fuel source are:
oil - current source; existing boiler and 330 gallon existing tank in garage
oil - with new and more efficient system/install? 3 pass design? outdoor reset? (trying to learn what that all means)
lp - 500gallon tank already buried in the yard running whole house generator; could drop another 1000 gallon tank for heat and appliances
nat gas - have been quoted ~$30K from CNG to convert due to needing to move the main several hundred feet down our street before running the service line
Natural Gas, while our preferred source, doesn't seem to pencil on a payback analysis with $30k+ upfront costs.
From reading the articles here and other sites, LP seems to be more expensive than oil per BTU. Either way we will use LP to run a range after the renovation so we can move away from electric stovetop (unless we went with nat gas for some reason)
Stick with oil, but install a much more efficient/modern boiler/furnace and controls?
Apologize in advance for any misuse of the terms above as I get up to speed on heating systems. I would appreciate any suggestions from the forum on recommended fuel source as well as specific systems to consider (e.g., low mass, 3 pass design, modern controls, outdoor reset etc.)
Thank you very much