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

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

Durham Region Air Conditioning Repair, Service and Installation

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Since 1928, Armstrong Air has been the smart choice for homeowners who expect more from their heating and cooling system. Built with durable materials and incorporating brilliant technology throughout, Armstrong Air is not only the brand to trust with your home comfort, it's also the brand more dealers would choose for themselves. From gas, oil and electric furnaces to air conditioners, heat pumps, air handlers and indoor air quality equipment, when you trust Armstrong Air, you're trusting The Professional's Choice.


The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart.


CODE: LED Off
RESULT: No power to control or control hardware fault detected.

CODE: LED On
RESULT: Normal operation.

CODE: 1 Flash
RESULT: Flame present with gas valve off.

CODE: 2 Flashes
RESULT: Pressure switch closed with inducer off.

CODE: 3 Flashes
RESULT: Pressure switch open with inducer on.

CODE: 4 Flashes
RESULT: High limit switch open.

CODE: 5 Flashes
RESULT: Rollout switch open.

CODE: 6 Flashes
RESULT: Pressure switch cycle lockout.

CODE: 7 Flashes
RESULT: Lockout due to no ignition.

CODE: 8 Flashes
RESULT: Lockout due to too many flame dropouts.

CODE: 9 Flashes
RESULT: Incorrect line voltage phasing.


See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

They came the day and time they had planned for us and were very fast and efficient! The AC works amazing and it is amazing during the heat of the summer we have already got! Thanks for everything you did for us!

by Private User on Twintech Heating and Cooling

Would recommend this company to friends and family in a heartbeat. Very professional , on time and left no mess when the job was done.

by stefany on Twintech Heating and Cooling

Great customer service. Responsive and professional. I would highly recommend Twintech, I used them previously for repair service and a new air conditioner- very satisfied.

by dianeramsden on Twintech Heating and Cooling

Our air conditioner failed. Made a call and within 15 min a technician was at our door.
The issue was fixed and many suggestions were provided.
Thanks to Mitch. Great service !

by Kazuko on Twintech Heating and Cooling

Our furnace was rattling, as soon as we put our air conditioner on this past week. We had researched looking for a company that was Registered with Better Business Bureau, and this company TwinTech, had A+ Rating. Scott, was immediately helpful via text/phone and sent his technician as soon as he was able...Mitchell/technician provided great professional service. Thank you TwinTech.
Sean and Debbie

by ANOOP on Twintech Heating and Cooling

I contacted various companies when looking to install a new furnace and I found Twintech to be transparent with their communication and approach. They had options to suit my various requirements and the price vs quality was very good. The after installation communication was also very good and they answered all queries I had.

by Private User on Twintech Heating and Cooling

My furnace broke down last month. The team was quick to respond, courteous, professional and mindful of COVID-19 concerns. I highly recommend them if you are considering replacing or servicing your HVAC equipment.

by Private User on Twintech Heating and Cooling

I was very happy with the installation and price. I would definitely recommend. Thank you Twintech.

by Dorothy on Twintech Heating and Cooling

Had furnace and air conditioning unit put in. They did an excellent job great price and everything clean as can be, I was very pleased

by Barry on Twintech Heating and Cooling

All winter I have had an issue with very little heat reaching the 2nd floor of our home. After this past winter ended I decided to look into this. I found Twintech Heating and Cooling on line and started the process. After explaining my problem I had a call form Twintech and the tech came out and walked through things with me. The problem was the heating vent pipe had been dropped down in size by someone years ago causing little heat reaching the 2nd floor. Further into checking out the older furnace and AC they found a few things not properly installed by the last install of the old furnace and also that the AC was on it's last legs. I asked for a quote and waited a few days and we decided to go ahead with Twintech. They called a few days before to set up an installation time and date. The day of the install the guys were a half hour early which was a plus. The day of the install was great, the guys worked away removing the old furnace and AC.After which they installed the new furnace and AC. After they cleaned up the basement with all their tools and scrap metal etc. they came back inside to walk thru what they did. They also tested both the furnace and cooling systems to make sure everything worked and I the customer was happy. I now have heat on the 2nd floor for next winter. The guys from Twin tech were very professional. Their work habits and knowledge of the job was excellent. Their workmanship was just excellent, it was just up there with my standards as a homeowner. I am very pleased to have chosen Twintech for my new furnace and AC.. If I had to rate this experience with Twintech this company is a 10 in my books.Product,workmanship and customer care says it all.

See What Our Customers Are Saying:

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!

by Anna Chin on Twintech Heating and Cooling

Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!

by Connor Agnew on Twintech Heating and Cooling

Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.

New Years Resolutions for Your Home

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - December 22, 2021

People commonly make New Year’s resolutions for things that concern their personal lives. This year, however, you might want to consider making resolutions that involve keeping your home a safe and enjoyable place from the outside world.Here are so

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Is My Amana Heat Pump Good For the Environment?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - January 30, 2024

I can provide some general information that might help you evaluate the environmental impact of your Amana heat pump. Energy Efficiency: Heat pumps, including those made by Amana, are generally more energy-efficient than traditional heating

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Is Your HVAC System Making Your Home Dusty?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - December 15, 2018

We all know the struggle of cleaning your home from top to bottom only to wake up a few days later and notice that dust has already begun to accumulate once again. It’s an annoying process that keeps us continually reaching for the duster da

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Why Buy a Heat Pump For My Durham Home

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - April 27, 2025

When it comes to keeping your Durham Region home comfortable year-round, choosing the right HVAC system is crucial. One of the most efficient and versatile options available today is the heat pump. At Twintech Heating and Cooling, we believe a

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