Main: 416-991-8009 Direct: 416-757-8889

Welcome To National Mechanical Air LTD. We’re Proud To Service Toronto and Surrounding GTA Areas!

National Mechanical Air LTD (formerly National Construct Air) has been in business since 2003. We provide HVAC/R and Mechanical services to businesses and multi-residential buildings throughout the Greater Toronto Area. We provide service on all equipment types ranging from rooftop units and cooling towers to heat pumps and ventilation systems. Our team even handles commercial refrigeration and sheet metal fabrication. As well as additional mechanical services such as plumbing and electrical as required.

Professional Affiliations:

Air Conditioning

Air Conditioning

If you find yourself in need of commercial or residential air conditioning repairs ...

Construction Installation

Air Conditioning

For the rest of this section, I'll describe a few HVAC systems that you may ...

Cooling Towers

Air Conditioning

When a cooling tower fails or when a short-term problem overwhelms the capacity of ....

24/7 Emergency Services Available - Serving the Toronto Areas!
Call us directly for any types of questions you may have with your HVAC needs 416-991-8009

New Construction?

We can install your HVACR systems!
SEE Services.

Heat, A/C & Refrigeration

Does your building have special needs?
Let Us Know

Service Request Form

request info

HVAC and Refrigeration Technicians in Toronto


At National Mechanical Air LTD, our aim is to provide you with reliable, competitively priced HVACR services. Our journeymen technicians have years of experience, and you can count on them to provide a job well done, each and every time.

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Main: 416-991-8009 Direct: 416-757-8889
Service Available 24/7

Contact Us



32-325 Nantucket Blvd, Scarborough, ON, M1P 4V5


Business Hours


Monday – Friday:
8:00 AM 5:00 PM