CELCO Heating & Air Conditioning serves Shelton
HVAC Repair & Installation in Shelton, CT
Looking for a dependable HVAC contractor in Shelton? CELCO Heating & Air Conditioning repairs, maintains, and installs furnaces, boilers, heat pumps, ductless mini-splits, central air conditioning, water heaters, generators, and commercial HVAC for Shelton homes and businesses, dispatched from our headquarters at 467 Bishop Ave in Bridgeport. Our NATE-certified technicians give you upfront pricing before work begins, and 24/7 emergency help is available when a system fails.
Family-owned since 1976 (50 years). License S1-392747. Call 203-371-0055 or schedule service online.
Call 203-371-0055Schedule ServiceRequest an Estimate
Family-owned since 1976 (50 years)
NATE-certified technicians
Licensed S1-392747
Upfront pricing
24/7 emergency service
467 Bishop Ave, Bridgeport HQ
Shelton HVAC Services
Whether your home or building runs on gas, oil, or electricity, our team can repair what you have or help you choose what comes next.
Heating Repair & Installation
No heat on a cold Shelton morning? Our technicians diagnose and repair gas and oil furnaces and boilers, and we install new high-efficiency and condensing equipment sized to your home. If rooms heat unevenly, the problem may be the ductwork rather than the furnace; see signs you need duct repair in Shelton. More on furnace repair & installation and boiler services.
Heat Pumps, Ductless & Go Hybrid
Heat pumps cool in summer and heat through most of the winter. Ductless mini-splits fit additions, finished basements, bonus rooms, and studios where running ductwork is not practical, and a smart thermostat makes them easy to control. A hybrid setup keeps your furnace or boiler as backup for the coldest days. Save up to $8,150 with available heat-pump incentives on a qualifying 5-ton system.*
*Up to $8,150 example is for a qualifying 5-ton system replacing oil, propane, natural-gas or electric-resistance heat, completed Sept 1 to Dec 31, 2026. Eligibility and program rules apply, and amounts may change. See Rebates & Incentives for details.
Heat pumps | Ductless | Go Hybrid | Thermostats
Air Conditioning Repair & Installation
When a humid summer pushes an older system past its limit, we repair and replace central air conditioners and air handlers, check refrigerant and airflow, and size new equipment correctly so it cools evenly instead of short-cycling. See air conditioning services and AC repair.
Water Heaters
We repair, replace, and install tank and tankless water heaters, including oil-fired models, plus combination boilers that supply both heat and hot water from one unit. See water heaters and tankless water heaters.
Generators
When storms knock out power in Shelton, an automatic standby generator starts on its own and keeps heat, refrigeration, and sump pumps running. We install, repair, and maintain them. Learn about generators and automatic standby generators.
Commercial HVAC
We install, repair, and maintain commercial heating and cooling equipment, including rooftop units, dispatched from our Bridgeport headquarters. See commercial HVAC maintenance, commercial heating installation, and commercial AC installation.
Maintenance Program
A yearly tune-up keeps furnaces, boilers, heat pumps, and air conditioners running efficiently and catches small problems before peak season. Ask about the Celco maintenance program for priority scheduling and system checkups.
How We Serve Shelton
CELCO serves homes and businesses across Shelton, CT, from Huntington and Pine Rock Park to downtown Shelton along the Housatonic. Our technicians are dispatched from our headquarters at 467 Bishop Ave, Bridgeport, CT 06610, and our family-owned team has worked in Fairfield County since 1976.
Here is what to expect when you call:
- Book a visit. Call 203-371-0055 or schedule service online.
- Get a clear diagnosis. A NATE-certified technician inspects the system, explains what is wrong, and gives you upfront pricing before any work begins.
- Choose your option. Repair, replace, or upgrade - we will explain the trade-offs so you can decide.
- Finish with a check. We test the system before we leave so you know it is running right.
Nearby communities we also serve include Trumbull, Monroe, Stratford, Milford, Derby, and Ansonia. Browse all service areas.
Recent Shelton Projects
Recent Celco installations in Shelton, CT. Photos are from completed jobs; customer-identifying details are omitted.

Mitsubishi Electric Ductless - Shelton
A home music studio in Shelton received a Mitsubishi Electric ductless system with a designer black indoor unit mounted high on the wall, a quiet way to heat and cool the room without ductwork. An ecobee smart thermostat was part of the same job.

Bock Oil-Fired Water Heater - Shelton
A malfunctioning water heater in a Shelton home was replaced with a Bock 32E oil-fired water heater and a new burner, plus a new smoke pipe to the chimney for proper venting.

Lennox Gas Rooftop Unit - Shelton
Celco installed this Lennox gas rooftop unit on a commercial flat roof in Shelton, part of our commercial heating and cooling work in town.
Frequently Asked Questions
Does Celco have an office in Shelton?
We serve Shelton from our headquarters at 467 Bishop Ave in Bridgeport, CT 06610. Our technicians come to your Shelton home or business; call 203-371-0055 to schedule.
Do you install ductless mini-splits in Shelton?
Yes. We install, repair, and maintain ductless mini-split systems in Shelton homes, including Mitsubishi Electric systems, and can pair them with a smart thermostat.
Do you work on commercial HVAC and rooftop units in Shelton?
Yes. We install, repair, and maintain heating and cooling for Shelton-area businesses, dispatched from our Bridgeport headquarters. Call 203-371-0055 to talk about your building.
Do you offer emergency heating or AC repair in Shelton?
Yes. Celco offers 24/7 emergency service for Shelton homes and businesses. Call 203-371-0055.
Are there incentives for heat pumps in Shelton?
Save up to $8,150 with available heat-pump incentives on a qualifying 5-ton system. The example applies to a qualifying 5-ton system replacing oil, propane, natural-gas or electric-resistance heat, completed Sept 1 to Dec 31, 2026. Eligibility and program rules apply, and amounts may change; ask us to check current eligibility.
Serving Shelton from our Bridgeport headquarters. Browse all service areas or call 203-371-0055.
CELCO Heating & Air Conditioning | 467 Bishop Ave, Bridgeport, CT 06610 | Family-owned since 1976 | CT License S1-392747