Furnace Replacement in Liverpool Village, Named on the Permit List
You do not have to guess here. Liverpool prints replacement furnaces on its permit list by name, and prints a separate form for the chimney.
Furnace Replacement quote in Liverpool
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Three forms, and which one your job needs
That third form is the one to watch in this village, and the housing explains why. Half of Liverpool's 1,344 homes were built in 1939 or earlier and 898 of its occupied units burn utility gas, so the standard arrangement is a chimney-vented furnace sharing a masonry flue with a gas water heater. Take the furnace out for a condensing model venting through a wall and the water heater is left on a chimney whose cross section was sized to carry two appliances, which Oak Ridge National Laboratory describes as orphaning it. The remedy is usually a liner sized for the single appliance. That is a real line item, it is the usual reason two quotes differ, and the village has already given it a form of its own.
Ask which application is being filed
The village publishes an HVAC Permit Application, a Mechanical Permit Application and a Heating Appliance and Chimney Application. A contractor who knows the village will know which.
No work before the permit is issued
The village states that no person shall commence work for which a permit is required until the Code Official has issued it. That sets the sequence of your job, not just its paperwork.
Confirm you are actually in the village
A Liverpool mailing address is not always inside the village line, and the village is a separate government from Salina and Clay around it.
The Liverpool permit list, and the flue behind half the village
The Village of Liverpool states that it uses the most recent edition of the New York State Uniform Code and that a building permit is required for any work which must conform to the Uniform Code, the Energy Code and the Village Zoning Ordinance. Its published list of such work names installation of any gas lines or appliance including space heaters, and installation of any new or replacement furnace, central air conditioning, boiler, gas fireplace or other heating equipment. The village publishes a separate HVAC Permit Application, Mechanical Permit Application and Heating Appliance and Chimney Application. It states that no person shall commence any work for which a building permit is required without first having obtained one from the Code Official.
Source: Village of Liverpool, New York, Building Safety and Code Enforcement, accessed 2026-09-14
The American Community Survey 2020-2024 five-year estimates report the median year structure built in Liverpool village as 1939 or earlier. Of 1,344 housing units, 675 were built in 1939 or earlier, 50.2 percent, 812 in 1949 or earlier, 60.4 percent, and 1,194 before 1980, 88.8 percent. Of 1,277 occupied units, 898 are heated with utility gas, 70.3 percent, and 338 with electricity, 26.5 percent. 803 of the occupied units, 62.9 percent, are owner occupied.
Source: US Census Bureau, American Community Survey 2020-2024 5-year estimates, tables B25034, B25035, B25040 and B25003, Liverpool village, New York, accessed 2026-09-14
Oak Ridge National Laboratory describes the mechanism directly. Where a noncondensing furnace and an atmospheric water heater are common-vented through a masonry or metal chimney, the furnace is removed, the chimney flue inlet it used is sealed and the new condensing furnace is vented through a side wall, the water heater is, in the report's word, orphaned on the original vent and could experience a venting performance loss. The laboratory states that the potential loss of performance stems from the fact that the chimney vent cross-sectional area was originally sized to vent both appliances but now serves only the water heater, so there could be insufficient draft to properly exhaust the flue gases from the water heater under some ambient temperature and wind conditions, and that this spillage of flue gases back into the basement through the water heater draft hood could result in dangerous levels of carbon monoxide and other pollutants in the home. It names two practical remedies: a Type B chimney liner properly sized for just the water heater, or a powered draft inducer with backflow preventer, and states that both result in extra costs.
Source: Oak Ridge National Laboratory, ORNL/TM-2014/624, Condensing Furnace Venting Part 1: The Issue, Prospective Solutions, and Facility for Experimental Evaluation, Momen, Munk, Biswas and Hughes, October 2014, accessed 2026-09-14
What furnace replacement involves
What Liverpool's permit list names, word for word
Most of Onondaga County leaves a homeowner working out whether a furnace replacement needs paperwork. Liverpool does not. The village works to the most recent edition of the New York State Uniform Code and its published list of work requiring a building permit names installation of any new or replacement furnace, central air conditioning, boiler, gas fireplace or other heating equipment, along with any gas line or appliance. It publishes three forms rather than one, an HVAC Permit Application, a Mechanical Permit Application and a Heating Appliance and Chimney Application, and states that no work may begin before the Code Official has issued the permit. Ask your contractor which of the three they are filing.
Ask which of the three forms applies
Send the Liverpool address and we will make sure the question reaches somebody who files them regularly.
Liverpool furnace and permit questions
One quote includes a chimney liner and one does not. Which one is wrong?
Possibly neither, which is the problem. If your gas water heater shares the chimney, a condensing furnace vents out of the wall and leaves it on an oversized cold flue. Oak Ridge National Laboratory describes the remedy as a liner sized for the single appliance or a powered draft inducer and says plainly that both add cost. Ask both contractors what happens to the chimney.
Is my address inside the village?
Worth confirming before anyone fills in a form. Liverpool is a separate government from the towns of Salina and Clay that surround it, and a Liverpool mailing address does not always sit inside the village line. The permit list on this page is the village's, and a town address answers to a different office.
The chimney line is where the prices split
Tell us what is venting into yours and we will arrange quotes that show the work rather than hide it.