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


American Standard Companies, Inc. was a global manufacturer of plumbing, heating, ventilating and air conditioning (HVAC) systems and services, bath and kitchen products and vehicle control systems.


The company was formed in 1929 through the merger of the American Radiator Company and Standard Sanitary Manufacturing Company forming the American Radiator and Standard Sanitary Corporation. The group was renamed to the "American Standard Corporation" in 1967.


CODE: 2 Flashes
RESULT: The furnace is likely blowing cold air because it's dropping the flame.

CODE: 3 Flashes
RESULT: Indicates a problem with the pressure switch.

CODE: 4 Flashes
RESULT: Indicates a problem with the limit switch.

CODE: 6 Flashes
RESULT: Indicates a problem with the polarity or grounding.

CODE: 7 Flashes
RESULT: Indicates a problem with the gas valve.

CODE: 9 Flashes
RESULT: Indicates a problem with the ignition or the ignitor circuit.

CODE: 22 Flashes
RESULT: Indicates a problem with the flame itself.


See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

Twintech promptly responded to request for quotation. They were thorough and helpful in explaining options. The quote was very competitive. Installation of new furnace was very professionally completed. Excellent work.

by Rita, Scarborough on Twintech Heating and Cooling

When our old oil furnace finally broke down we decided it was time to finally convert to natural gas and finally install central air conditioning at the same time. Knowing it was going to be a significant investment for us, we wanted to make the right choice. Twintech came highly recommended by a friend and we were not disappointed. From the first contact with the salesperson, until the final touches on the installation, we were so pleased with their service. Everyone from the company was so friendly, efficient and a pleasure to deal with. Best of all, the cost was very competitive. We would certainly recommend Twintech to anyone requiring HVAC work in their home.

by Bob S, Pickering on Twintech Heating and Cooling

Mitch from Twintech came out for our annual furnace inspection. We found him to be friendly, conscientious & he left the work area clean. We were also very impressed with the thoroughness of the job he did. This is the 2nd job we’ve had Twintech do for us & have been very happy with the results for each. We highly recommend this company. Thank you, Mitch, Dave & Greg.

by Brent L on Twintech Heating and Cooling

Work was done on schedule, professionally, according to quote and with minimal inconvenience to building users. Very happy with the end result. The only area for improvement from my experience - need more timely quoting process.

by Karen on Twintech Heating and Cooling

The team was great! Very knowledgeable, professional and extremely helpful. A few days after install the unit didn’t seem to be working, user error, but within minutes of contacting them..on a Saturday.. a tech was on the phone troubleshooting with us. I highly recommend Twintech for your cooling or heating needs. They stand by their products and a pleasure to deal with.

by Rob on Twintech Heating and Cooling

During the hottest week in the summer our old A/C decided to call it quits. I called Twintech Heating & Cooling after receiving a referral from a family member; came highly rated for being an honest, family-run business, who appreciates their customers. Dave was able to accommodate my hectic schedule and book a late evening appointment to walk through the specifics. Greg and Mitch arrived exactly on time a few days later, were very polite and friendly, and within a couple of hours had a new unit up and running. I also received a follow-up call to ensure we were happy with the Amana.

by Linda Robinson on Twintech Heating and Cooling

They were on time and very professional. I'm so glad I decided to go with Twintech, thanks!

by Famcam1953 on Twintech Heating and Cooling

Timely and appreciated - this was during the hottest days this year when our Air and Furnace way.
Efficient. Professional. No BS or overselling. What was promised, was delivered at a cost-effective price point.
Down to earth.

by DG Sellers on Twintech Heating and Cooling

Professionally done and took care to cover all entry floors to the house for the installers to remove the old furnace and install a new furnace.
I also made recommendations of the tankless water heater that we had installed and items to address. We did not know they also installed tankless water heaters.

by Bill, Pickering on Twintech Heating and Cooling

Price was not the cheapest nor the most expensive of my quotes. It's the quality of the installation that makes for a good AC system. The twins' knowledge & professionalism was evident in the small details:
Very clean work. Greg made sure that the refrigerant level & temperature were correct. They reinstall the insulation & vapor barrier around the wall. The outside electrical cords were secured to the wall. Proud to support this local company. Thank you.

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.

Panasonic Heat Pump Consultation in Toronto

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

When it comes to heating and cooling your home efficiently, Panasonic heat pumps are quickly becoming a top choice for homeowners across Ontario. At Twintech Heating & Cooling, we specialize in providing expert advice and full-service consulta

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How Long is an AC Supposed to Last?

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

The lifespan of an air conditioning (AC) system can vary depending on several factors, including the quality of the unit, frequency of use, maintenance practices, and environmental conditions. However, on average, a well-maintained central air condit

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Do Furnaces Need to be Maintained?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - February 8, 2024

Yes, furnaces do require regular maintenance to ensure they operate efficiently, safely, and reliably. Routine maintenance helps prevent breakdowns, extends the lifespan of the furnace, and ensures it operates at peak performance. Here are some

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What's the Cost of a Heat Pump in Canada?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - May 28, 2023

The pricing of a heat pump in Canada can vary depending on several factors, including the brand, model, capacity, features, installation costs, and regional market dynamics. It's essential to obtain current quotes from local suppliers or contract

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