Durham Region Air Conditioning Repair, Service and Installation
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.
RESULT: No power to control or control hardware fault detected.
CODE: LED On
RESULT: Normal operation.
RESULT: Normal operation.
CODE: 1 Flash
RESULT: Flame present with gas valve off.
RESULT: Flame present with gas valve off.
CODE: 2 Flashes
RESULT: Pressure switch closed with inducer off.
RESULT: Pressure switch closed with inducer off.
CODE: 3 Flashes
RESULT: Pressure switch open with inducer on.
RESULT: Pressure switch open with inducer on.
CODE: 4 Flashes
RESULT: High limit switch open.
RESULT: High limit switch open.
CODE: 5 Flashes
RESULT: Rollout switch open.
RESULT: Rollout switch open.
CODE: 6 Flashes
RESULT: Pressure switch cycle lockout.
RESULT: Pressure switch cycle lockout.
CODE: 7 Flashes
RESULT: Lockout due to no ignition.
RESULT: Lockout due to no ignition.
CODE: 8 Flashes
RESULT: Lockout due to too many flame dropouts.
RESULT: Lockout due to too many flame dropouts.
CODE: 9 Flashes
RESULT: Incorrect line voltage phasing.
RESULT: Incorrect line voltage phasing.
See What Our Customers Are Saying:
Feb 18, 2025
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.
Feb 18, 2025
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!
Feb 18, 2025
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!
Feb 18, 2025
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!
Feb 18, 2025
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.
Aug 17, 2024
I returned from vacation to find my AC unit on the Fritz. After calling way too many places I connected with TwinTech. Ive used the company in the past for my furnace so I was happy when I recognized Greg at my front door. Hes great and the service is always top notch. Id highly recommend using twintech for honest, superior service in the Durham region. Thanks!
Aug 13, 2024
I called Twin Tech when my air conditioning stopped working. Greg came over to diagnose the issue - the same day. He was able to diagnose the issue and resolve it quite quickly. Although it was a quick fix, Greg was very thorough in explaining the issue and provided great advice. Not to mention, I felt very comfortable having Greg in my home - which I consider very important when hiring a service provider. Twin Tech will be my go-to from now on. Thank you!!
Aug 12, 2024
Just hired TwinTech Heating & Cooling to do an A/C Unit removal & reinstall to allow for landscaping access on the side of my house, and they were wonderful!
Bob, Greg & Mitch make a great team! Quick appointment times, super knowledgeable, expert troubleshooting capabilities & very customer service oriented.
I would highly recommend them for all of your HVAC needs! Great job guys!!
Jul 23, 2024
Twintech Heating & Cooling installed my furnace in 2022 and in fall of 2023 installed my Panasonic Heat Pump. Greg and Mitch did a great job. Helped me through the rebate process. Super happy with the Heat Pump. Only used my furnace 5 times this winter. Energy bills lower, carbon emissions lower.Thank you Twintech. I recommend highly!
Jul 18, 2024
Just had a new furnace installed by Twintech. I cant express how great these guys are at what they do. From the sales to installation they were professional all the way. Very reasonable pricing and courteous during the installation and willing to answer any questions I had. Highly recommended !!!
See What Our Customers Are Saying:
Feb 18, 2025
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.
Feb 18, 2025
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!
Feb 18, 2025
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!
Feb 18, 2025
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!
Feb 18, 2025
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.
Heatpump Advice Needed
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - July 18, 2023
I'm planning to install a heat pump system in my home that can provide radiant heating as well as air heating and cooling. I'm considering using an air-to-air heat pump for the traditional heating and cooling needs, and an air-to-water hea
Read MoreDoes My Furance Need A Repairman?
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - September 27, 2024
If you're wondering whether your furnace needs a repairman, here are some signs that it might be time to call a professional: Unusual Noises: If your furnace is making banging, rattling, or screeching sounds, it could indicate mechanical
Read MoreHeating System: The Ultimate Maintenance Checklist
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - February 28, 2018
In some places, heating systems are in full force as they warm homes and keep families comfortable. This is why for some families, the use of heating systems has been a part of their daily norm. Maintaining your heating system regularly is esse
Read MoreQuick Troubleshooting Guide for Furnace Issues
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - December 9, 2024
A malfunctioning furnace can be a major inconvenience, especially during colder months. Below is a simple guide to help identify and potentially resolve common furnace issues before calling a professional. 1. Furnace Won’t Turn On Ch
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