$49 / month O.A.C Including Install
$49 / month O.A.C Including Install

Twintech Heating & Cooling Puts Customers First

24 / 7 Emergency Service Available. Call Us Now: 1.844.894.6832


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Twintech Heating & Cooling Puts Customers First

Posted On: October 15, 2025

Twintech Heating & Cooling Puts Customers First

When it comes to home comfort, Twintech Heating & Cooling has become the go-to name across the Durham Region.


Whether you live in Whitby, Oshawa, Pickering, Ajax, or Bowmanville, homeowners know one thing: when Twintech is on the job, the work gets done right—every time.


A Family-Run Company That Puts Customers First


At Twintech, we believe great service starts with genuine care.


As a local, family-owned business, we’ve built our reputation on honesty, reliability, and top-quality craftsmanship.


From the first phone call to the final inspection, our technicians take the time to listen, explain your options, and make sure you’re completely satisfied.


We understand that heating and cooling issues can be stressful—especially during Durham’s cold winters and humid summers.


That’s why our team is available to provide fast, friendly, and professional service whenever you need it.


Comprehensive Heating and Cooling Solutions


Our expert technicians are fully certified and experienced in a wide range of HVAC services, including:


Furnace installation and repair


Air conditioner installation and maintenance


Heat pump systems


Indoor air quality and humidity control


Energy-efficient HVAC upgrades


Every installation and repair is handled with precision and backed by high-quality parts, ensuring your system performs at its best for years to come.


Why Twintech Stands Out in the Durham Region


What truly sets Twintech apart is our commitment to excellence in every interaction.


We don’t just meet expectations—we exceed them.


Our customers consistently praise our transparent pricing, punctual service, and expert workmanship.


When you choose Twintech, you’re choosing: Experienced, certified HVAC professionals Honest assessments and upfront quotes Dependable service that puts your comfort first Support from a local business that cares about the Durham Region community Experience the Twintech Difference


Whether you need a new furnace before winter or an air conditioner tune-up before the summer heat hits, Twintech Heating & Cooling delivers the dependable, high-quality service you deserve.


Contact us today to schedule your appointment and discover why so many Durham Region homeowners trust Twintech to keep their homes comfortable all year long.


Twintech Heating & Cooling – Local.


Reliable.


Outstanding Service.



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See What Our Customers Are Saying:

by Eric Y, Greenbank on Twintech Heating and Cooling

Dave was great in helping me get the proper units for my property, as well as getting them installed. The installers arrived when they said they would, and completed the project on time, and professionally. If I needed another furnace, I would use Dave again.

by Ed B., Whitby on Twintech Heating and Cooling

I have known Greg and Grant Dainty for many years and have used their company for my house and business. I recommended them also for my parents and sister and they all have been very satisfied with the quality of work for a reasonable price. I just recently had them install a new HVAC system in an older house and was very pleased with their work. Craig in Pickering. After meeting with various heating and air conditioning contractors I was referred to Twin Tech Heating and Cooling through a family member. Greg and Grant arrived at my home and provided me with an estimate and a plan as to how they were going to remove and replace my furnace and air conditioner. On the day of install Greg and Grant arrived at my home on time and were very professional and extremely courteous as to any questions or concerns that I had. The removal and install was truly professional and the attention to detail was exactly what I was looking for. I’ve seen many installs from other contractors and I couldn’t be any happier to have had such a clean looking install. The sheet metal work, ducting and venting all look fantastic. Upon completion Greg and Grant left me feeling extremely happy and very fortunate of a job well done. Thanks again Twin Tech!!

by Floreene in Whitby on Twintech Heating and Cooling

My old furnace had finally broken down for the last time when contacted twintech to have a new furnace installed…They were prompt, knowledgeable and very reasonably priced. They did such a great job i tell all my friends and family about this company.

by Damien McIsaac. Ajax on Twintech Heating and Cooling

To whom it may concern, I recently had TwinTech (Greg and Grant Dainty) replace my furnace and service both my gas fireplaces and air conditioning unit. They were professional, courteous and very fair in their pricing. I would gladly recommend TwinTech to anyone needing work done. I can be contacted at 905-626-XXXX.

by Blair N. - Toronto on Twintech Heating and Cooling

My Fiancé and I have relied on Twintech Heating and Cooling now for the better part of the last 10 years. In that time, Greg has installed a furnace, an air conditioner, and a heat-pump at our residence in Toronto. In each instance Greg and his team were a pleasure to deal with. They were courteous and professional throughout the whole process and the quality of their work is first rate. Our experiences have always been extremely positive and we have referred his services numerous times to our friends and family. Without hesitation, I would recommend Greg and TwinTech Heating and Cooling to anyone looking to service or replace their existing heat/AC equipment

Related Links:
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See What Our Customers Are Saying:

by Aaron on Twintech Heating and Cooling

We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.

by Linda on Twintech Heating and Cooling

Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!

by Robert Rogers on Twintech Heating and Cooling

Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.

by Robert Mizuno on Twintech Heating and Cooling

We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!

by Ruth on Twintech Heating and Cooling

TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!

Optimizing Your Furnaces Capabilities

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - February 9, 2025

A well-maintained furnace ensures your home stays warm and comfortable while keeping energy costs under control. Here are some key steps to optimize your furnace’s efficiency and longevity: 1. Change or Clean the Air Filter Regularly A cl

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What is a Heat Pump and How Does it Work?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - July 31, 2019

A heat pump is an electrical device that pulls heat from one place and transfers it to another. This type of device has been used in Canada and around the world for decades. Both refrigerators and air conditioners use this type of device. Do not

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Is My Furnace Raising My Energy Bills?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - September 26, 2024

If you're wondering whether your furnace is raising your energy bills, there are several factors that could be contributing to increased costs. Here are some key reasons to consider: Inefficient Furnace: Older furnaces or those not prope

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Ajax Furnace Repair

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - January 17, 2025

Maintaining a clean furnace is essential for homeowners in Ajax, Ontario, to ensure optimal performance, energy efficiency, and indoor air quality. Twintech Heating & Cooling, a family-owned business with over 30 years of experience, offers profe

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