top of page
View of rooftop commercial HVAC systems

24/7 Commercial HVAC Services in St. Catharines

J & S Heating And Air Conditioning proudly supports local business through installation and maintenance of heating and cooling systems and refrigeration appliances. We provide best-in-class commercial HVAC services in the Niagara Region. If your small business needs immediate repairs on a boiler or wants to purchase a new air conditioning system, contact J & S Heating And Air Conditioning in St. Catharines.


Our licensed technicians service and install various commercial equipment including:

  • Furnaces

  • Boilers

  • Heat pumps

  • Air conditioners

  • Ductless split systems

  • Conventional water heaters

  • Thermostats & controls

  • Rooftop units/make-up air units

  • Radiant tubes

  • Infrared heating

  • Unit heaters

  • Chillers

  • Reach-in coolers/freezers

  • Walk-in coolers/freezers

  • Dry-O-Trons

  • Water/cooling towers

  • Farm cold storage equipment

View of a technician regulating a thermostat

Commercial Contract Maintenance

All heating, air conditioning, refrigeration and farm cold storage systems need to be maintained to ensure proper functioning. J & S Heating And Air Conditioning wants your equipment to run efficiently at all times, and we’ve established a preventative maintenance program to help you reach this goal. We can prevent most breakdowns which occur due to neglect. Our program will save you money in the long run by avoiding major repairs.


Our preventive maintenance program provides the following:

  • Energy savings

  • Increased comfort

  • Reduced equipment failures

  • Extended equipment life

  • Priority emergency service

  • Peace of mind

Please note that our commercial preventive maintenance plans automatically renew each year unless a written notice is received prior to the renewal date of your contract.

J & S Heating And Air Conditioning’s preventive maintenance program can be tailored to your specific needs. Let our licensed team look after your system and prevent costly breakdowns. Call us for a free, no-obligation quote.

Carrier logo
Reader’s choice logo
Reader’s choice 2021
Reader’s choice 2021 platinum winner
Logo of Technical Standards & Safety Authority
Logo of North American Technician Excellence
View of a technician repairing a commercial HVAC system

Emergency Repairs

Call J & S Heating And Air Conditioning 24/7 for service

bottom of page