Commercial Heating & Air Conditioning

commercial_HVACPoor ventilation, air conditioning, and heating make everyone miserable. In your facility, you’ll hear the system making noise, while employees may complain about dust, dirt, and allergens. Not only that, the monthly energy bills reflect when the system’s not working efficiently, and you’ll be facing high costs until you find out what’s wrong.

When your building’s HVAC system doesn’t operate to its full potential, you need M.J. Fahy to examine and repair it. Our team of experts has extensive experience designing, laying out, and repairing heating and air conditioning systems for warehouse, manufacturing, commercial, and institutional facilities. Work with us for:


As experienced steamfitters, we can:

  • Do boiler replacement, including high- and low-pressure systems
  • Install or repair steam process piping, condensate piping systems, and boiler feed systems.
  • Complete steam trap repairs, replacements, and surveys.
  • Work with vacuum and condensate systems.

Our team handles all types of hot water applications:

Hot Water

  • New system design and installation
  • Modular boiler systems design and installation
  • Boiler replacements
  • Radiant space heating and snow melting equipment
  • Outdoor reset and boiler staging controls
  • Energy Management Controls

Hot Air & Air Conditioning

Our technicians perform a range of services for warm and cool air systems.
Have us install or repair the following:

  • Furnaces
  • Dehumidification
  • Make-up air units
  • Gas-fired roof top replacements and new installations
  • Split system air conditioning systems
  • Air conditioning service and repair
  • Combustion make-up air
  • Ventilation


Suspended Gas-Fired Equipment

As our team has comprehensive experience installing and repairing a range of heating systems, let us evaluate yours for optimal cost efficiency.
We can examine:

  • Gas-fired propeller unit heaters
  • High efficiency infrared gas-fired heating equipment for warehouses and manufacturing facilities

Burner Replacements & Upgrades

com-hvac-1An existing method might not be the most cost efficient, or could be performing poorly in other areas. To determine if your existing burner needs to be replaced or upgraded, we can:

  • Examine the existing heating method.
  • Replace any old or inefficient equipment.
  • Help reduce operating expenses.
  • Work with oil, gas, and gas/oil combination burners.

Let M.J. Fahy address and meet all of your commercial HVAC needs. To schedule an appointment, contact our Connecticut location today.