11 Butternut Hollow Rd
Greenwich, CT- 2026Mechanical
HVAC Work
$12K
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Project Manager · Celco Heating & AC
Documented work across Connecticut based on attributed municipal records.
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FullContact query stored 2026.
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Work history
Individual records are grouped by address. Totals include only values reported in public records and may not equal final construction cost.
HVAC Work
$12KHVAC, Geothermal, Chimney liners & Oil Tank Permit WILTON
$35KHVAC Work
$10KReplace the tank water heater with an on-demand, direct-vent gas water heater.
$5KInstall 2 head Wiring for ductless heat pump system New inground swimming pool, New underground feeder, outdoor panel.
$11KReplace the oil furnace and air conditioning with a new gas furnace and air conditioning, and install new natural gas service.
$14KNew 1" black gas line from meter into house-to 3/4 trac to furnace.
$1KReplace existing gas piping and pressure testing.
$10KReplacing existing tankless boiler to a floor mount burnham alpine boiler and connecting back to existing indirect tank.direct yenl.
$1KMechanical: attic central AC change-out.
$6.8KReplace 3 rooftop units-rigging by helicopter (1)15-ton trane rooftop 2 12.5 trane rooftop.
$104KRemove the existing oil tank and oil boiler; install a direct-vent Navien combination boiler, model NCB240E.
$10KOil-to-gas conversion, including gas lines from the meter to a new natural gas Navien combination boiler.
$12KHVAC
$2.5K5 indoor wall-mounted ductless units and 1 outdoor Mitsubishi ductless unit, 3 ton.
$21KHVAC
$40KDirect replacement of existing oil boiler.
$8KWith (5) matching indoor units.
$42KModel number A951X040BU35AB.
$4KHVAC
$25KInstallation of a Mitsubishi heat pump, model MX3-C30NAHZ24, and 3 matching indoor heads.
$15KRemove existing Hardwiring an circuit was existing Romex, so we gas boiler. Replace with Burnham ALTAC-200. Emporia EVSE mounted inside the garage set to 40 amps. The EV charger and was installed when the home was built. The circuit was run with #6 will install a 50-amp breaker to protect the EV charger circuit. The EVSE has built-.
$7KAnd ductwork to accomadate renovations.
$30KRemove the existing air handler and replace it with a Trane, model TEMA0B24H21SC.
$9KRun a new gas line from a new meter to a new furnace and install a new direct-vent furnace.
$9KReplace the attic air handler and outdoor AC unit with a Bryant air handler and condenser.
$10KReplace the air conditioning system, including the condenser, air handler, and lineset.
$10KFired furnace.
$6KThe gas company shut off and locked the gas meter due to a leak. Repair and pressure-test the gas piping, and replace the existing gas boiler with a wall-hung Navien.
$9KInstallation of a wall-hung combi boiler, black pipe from the new meter to the manifold, and TracPipe from the manifold to the boiler.
$9KHVAC Work
HVAC Work
$13KRemove the existing oil furnace and replace it with a gas furnace and gas line. Approx. piping from the existing gas line to the new furnace.
$10K18000 WHERE OIL FURNACE IS NOW (LOOK AT SOAP TEST AT INSPECTION) Strip and re-roof 26.95 sq's with IKO Dynasty. Install Sealoron XT ice and water shield barrier and Valora Synthetic underlayment. Replace any.
$6.6KInstallation of a direct-vent natural gas combi boiler; removal of the existing gas water heater.
$10KMechanical: Remove the existing gas furnace and replace it with a new one.
$4KMechanical: Remove existing air conditioning. Replace the condenser in the same location with a heat pump and matching indoor AHU.
$19K7000remove existing AC condenser. Replace in same location with trane condenser +atlu stanley.
$6.6KInstall a new Mitsubishi heat pump system with an outdoor unit and 2 indoor heads: one on the main floor and one in the master bedroom.
$8KReplacement of gas boiler; remove existing boiler and water heater and replace with a combi gas boiler.
$9.7KReplace the existing AC condenser rooftop unit with a 2.5-ton AC rooftop unit in the same location.
$12KInstallation of 3 zone ductless heat pump systems, outdoor unit, 1 indoor head for family room and 2 indoor for each bedroom.
$10K2 new heat pump systems on main floor, 3-ton ducted outdoor matching variable speed, top floor - 3 zone variable speed ductless, 3 wall air handlers.
$29KRemove the existing air conditioning condenser. Replace it in the same location with a heat pump and matching indoor unit.
$10KReplacement of the existing air conditioning system. Remove the existing outdoor unit and replace it in the exact same location with a Lennox heat pump and matching indoor unit.
$7K/replacement of existing air conditioning system. Remove existing outdoor unit from back of the house w Lennox heart pump and matching indoor unit.
$6KNew installation of 2 5-zone ductless heat pumps, with the outdoor unit on the left side of the house.
$34KInstallation of a new gas combi boiler; 0 black piping from the meter to a tee and pipe to the new boiler.
$10KInstall a gas line to the kitchen stove and run a gas line from outside through the cabinets to the area behind the stove. Install a gas shutoff valve and provide a stub-out for a future water heater. Size the piping to fit a future furnace.
$1.5KInstall a direct vent combi boiler.
$7KHVAC Work
Oil to gas conversion - place new gas boiler in with 15' black pipe and 1" to manifold, 3/4 trac < 15 ft to boiler.
$8KOil-to-gas boiler conversion: removal of existing equipment and replacement with a new boiler; installation of a new gas line from the new meter to the new boiler and stove.
$9KAC replacement: Remove (1) existing AC unit and replace it with a new one in the same location. Replace the existing gas furnace and (2) Trane cased coils.
$6KHeat pump replacement: remove the existing heat pump and place a matching indoor unit in the same location.
$7KConvert from oil to gas with a direct-vent combi boiler and a new gas line from the new meter to the boiler.
$8KOil to gas conversion - remove oil boiler and install combi boiler to gas piping 10' from meter inside tac to new boiler - direct vent.
$9KReplacement of AC systems - remove existing condenser and replace 4-ton AC and add mitsubishi 2 head ductless.
$15KHVAC
$5.5KHVAC
$35KHVAC
$6KHVAC
$5KHVAC
$12KHVAC
$9KHVAC
$10KInstall 2 heat pumps and 2 air handlers.
$18KReplacement of gas boiler; removal of current equipment; gas piping from current line to boiler.
$9KInstall a gas furnace; convert from oil to gas.
$6KHVAC Work
$12KHVAC
$15KHeat pump outdoor units and indoor units.
$10KInstall a Mitsubishi Hyper Heat Pump with 1 ducted indoor air handler and 2 indoor wall units.
$14KConvert the chimney-vented oil boiler to gas; direct-vent boiler. Remove the above-ground oil tank.
$9.9KRemove the existing above-ground oil tank and boiler; install a new gas steam boiler. The gas line is already in the home for the existing water heater.
$8KInstall a new gas line for the furnace, a new Trane gas furnace, a new air-conditioning coil, and a new air-conditioning condenser.
$8KRemove the oil boiler and indoor oil tank; run a new gas line from the new meter bar to the new boiler.
$10KMechanical: replace oil-fired furnace with a variable-speed heat pump system.
$12.7KRun 10 ft. Of 1'1/4" gas line to generator. Receipt 21-3542 for $40 paid.
Mechanical gas/propane line for stove, water heater, and furnace; inside piping only. Underground line and tank by others.
$500Mechanical: 2 direct-vent gas furnaces; run a new gas line and new gas service.
$12KMechanical: Install 2 heat pump systems.
$21KMechanical: change from a gas-to-gas chimney vent to a direct vent.
$8KMechanical: Remove the oil boiler and install a new gas boiler.
$10KMechanical: Replace chimney-vented oil furnace with a direct-vent gas furnace. Gas is in the home. Existing air conditioning and electric water heater.
$5.7KMechanical: oil-to-gas direct-vent furnace.
$10.7KMechanical - remove furnace and oil tank and replace with new gas furnace and condenser, add 50 gallon water heater.
$10KMechanical - install 2 - head duct less heat pump and 1 outdoor AC.
$8KMechanical: install heat pump system.
$7.5KMechanical: Convert the chimney-vented furnace to gas direct vent; install new AC and water heater.
$13.3KMechanical: ductless heat pump and 2-ton variable-speed indoor air handler.
$6KMechanical: Remove the existing heat pump and install a new air handler/heat pump.
$5KPlumbing: install natural gas water heater.
$3.8KMechanical: heat pump, air handler to direct vent, and existing gas-fired furnace. AC to stay.
$7.8KRemove gas boiler; install new direct-vent gas boiler with indirect.
$11KSeparate gas piping off meter; install replacement gas boiler.
$12KRemove existing oil boiler, install new boiler, and reconnect to indirect heater and 2 hydro zones.
1 outdoor heat pump; 2 1-ton air handlers in attic; 1 1-ton air handlers in basement.
$13KRemove the oil boiler and install a new gas boiler: a direct-vent Lochinvar combi boiler.
$10KRemove the oil boiler and indoor tank. Install a new direct-vent combination boiler and direct vent. Install a new 1 1/4 black gas line to the manifold and gas pipe to the boiler.
$10KInstall 1 Mitsubishi heat pump, 48000 1 ducted a/r handler. 2 1/2-ton 1 wall-mounted unit, 1 Mitsubishi heat pump, 3-ton, 2 wall-mounted units.
$24K