For Heating, Air Conditioning and Ventilation services you can trust, call DeMarco Mechanical. We install and deliver top quality products and offer the best services in the Markham area. Our professional teams offer the services necessary to deliver quality heating and cooling services and upgrades which save you money by limiting energy consumption. Here’s what DeMarco can offer you:


 Substantial Energy Consumption Reduction: We offer heaters and air conditioning units which offer substantial energy consumption, and are able to provide you with the top brands in heating, air conditioning, and ventilation. Our energy efficient systems can save you considerable sums over their years of service. For more information about how our energy efficient home HVAC systems work, please contact us.

Eligibility for Tax Rebates: Installing an energy efficient heating, ventilation and air-conditioning system may qualify you for energy rebates from your local municipality or city. Check your area for more information.

High-Quality Products, Installations, and Repairs: Our professional, qualified teams take pride in our company’s continued ability to deliver the highest quality products and services. We stand behind each and every installation and offer customers continued support in finding the best HVAC systems for your home or business’s needs. Our certified and licensed technicians pay close attention to your individual needs and guarantee a product installation that will serve you for years to come.

Air Quality Control: In addition to HVAC services, we offer indoor air quality control services such as duct cleaning and filtration systems selection, installations and repairs.


Continued Assistance: Whether you need help finding a heating, air conditioning, ventilation or air purification system, require repairs or replacements, we are here to help. DeMarco Mechanical offers continued assistance and a lifetime warranty on all services. We are dedicated to customer satisfaction, and will not rest until we can solve any and all of your problems.

Markham Wide Services: We serve all of Markham as well as the rest of the Greater Toronto Area and surrounding regions. In order to completely satisfy our customers we are the best furnace technicians in Markham, and offer quality furnace repairs and ac services. Our far reach means that we can provide even distant customers with great HVAC services and energy savings. We offer:

  • Amana AC repair
  • Amana furnace repair
  • Goodman AC and Furnace repair
  • Rheem Furnace repair
  • Carrier AC and furnace repair
  • Bradfrod White water heater service
  • As well as much more. We are your number one source for ductless heat pump Toronto, heating and cooling Markham and gas furnace service. Rely on us to get the job done.


DeMarco Mechanical serves the GTA and Markham, offering repairs, general maintenance, replacement or parts and full water heater, air conditioner, ventilation and air purification systems. Our teams of dedicated, highly skilled, licensed professionals offer you the highest standard of any service, and are able to help you find the right system for your needs. With our expertise and services, your HVAC needs will be solved in no time. There is no job too large or too small for our company, and we are happy to take on commercial projects and inquiries. Please contact us for more information, or visit our website to see the extent of our services.


For a free estimate, or to request a visit, please give us a call or send us an email at: (416) 820-9155 or We are always happy to assist you in any way we can.

DeMarco Mechanical believes in creating good, lasting relationships with our customers, which is why we offer multi-equipment discounts, service contracts, and highly competitive rates. We serve the entirety of the GTA and Markham and have excellent reviews throughout our service area. Visit us on to learn more about what our customers are saying about DeMarco Mechanical.