$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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If you're looking for help fixing your comfortmaker furnace, look no further! Our comprehensive comfortmaker furnace repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.


CODE: Steady LED flashing.
RESULT: Normal operation.
FIX: n/a.

CODE: Two LED flashes.
RESULT: Pressure switch stuck closed.
FIX: Obstruction in pressure tubing.

CODE: Three LED flashes.
RESULT: Pressure switch stuck open or manual ON/OFF switch in off position.
FIX: Proper vent size; defective inducer motor; excessive wind; faulty pressure switch; disconnected or obstructed pressure tubing; inadequate combustion air supply; or restricted vent.

CODE: Four LED flashes.
RESULT: The limit switch is open.
FIX: Loose blower wheel; restricted vent; dirty air filter; defective blower; or excessive wind.

CODE: Five LED flashes.
RESULT: Flame has been sensed out of sequence.
FIX: The gas valve is either leaking or stuck open.

CODE: Six +1 LED flashes.
RESULT: Soft lockout: maximum trials for ignition has been reached.
FIX: Call For Service.

CODE: Six +2 LED flashes.
RESULT: Soft lockout: flame sense was lost while running, a cycling pressure switch, or blocked condensate.
FIX: Call For Service.

CODE: Six +3 LED flashes.
RESULT: Soft lockout: the pressure switch was opened during run
FIX: Call For Service.

CODE: Six +4 LED flashes.
RESULT: Soft lockout: the limit switch was opened during run.
FIX: Call For Service.

CODE: Seven LED flashes.
RESULT: Soft lockout: the main limit was open for too long (1-hour delay).
FIX: Call For Service.


See What Our Customers Are Saying:

by Jennifer in Toronto on Twintech Heating and Cooling

I had cold and hot spots all over my 70 yr old home. My furnace is quite new and Greg optimized the fan and furnace. The original installer just took it out of the box with factory settings and installed it- basically running at 50% of capacity. Greg also routed heat into my laundry room, yeah - so now I can renovate laundry room - thanks Greg. He is honest, professional and knowledgeable. I will be calling him back in the spring to optimize my AC as well.

by Happy Homeowner in Toronto on Twintech Heating and Cooling

Wonderful from beginning to end. I tend to fret and worry about home improvements but the excellent team at TwinTech put my mind as ease. They listen, they are patient and best of all ... the work they did is amazing! I chose the Goodman 80K BTU 2 stage furnace and the matching Goodman air conditioner. Greg, Grant and Poitr "Peter" arrived on time, took great care, explained everything to me and they answered all of my questions. They carefully adjusted the factory settings to optimize the furnace for my house and they also checked the duct work in the basement. Dave, the Sales Manager, came by to say "hello" and to see if I was happy. YES, I am happy with the work! The furnace is very quiet. I have it running on low just to circulate the air in the house and it's so much quieter than my old furnace. When I need new duct work for an upcoming basement renovation TwinTech will be my first choice. I highly recommend TwinTech. PS. They were even nice to my dogs.

by Les G. from Pickering on Twintech Heating and Cooling

Greg was prompt on the scheduled day of installation and the work was done well within the time estimated beforehand. Installation was neat and the equipment and scope of work was as specified in the quote. One item I must point out is that we were faced with a "No Heat" situation the day before the scheduled installation and Greg came out to address it free of charge. Not only that, but he also corrected an installation fault with our smart thermostat that was not part of the original job, again free of charge.

by one19 in North york on Twintech Heating and Cooling

Greg came by to do a routine furnace checkup. He was very knowledgeable and professional, letting me know what's being checked/adjusted and giving me tips to ensure everything runs smooth. Very honest and upfront about what's working fine vs. what may need to be fixed/replaced. He didn't attempt to up sell anything that wasn't necessary. I'm glad to have finally found someone I can trust and rely on for all my HVAC needs - furnace, A/C, and hot water tank.

by Paul M. from Toronto on Twintech Heating and Cooling

I'm very happy with the work that was done. Everyone from salesperson to the installers were friendly and professional. They were on time and cleaned up the job site after it was installed. They also answered all my follow up questions promptly. I wouldn't hesitate to work with them or recommend them again.

by Kathy D.in Ajax on Twintech Heating and Cooling

Thanks to the team at Twin Tech for a great job installing my new heat pump/ac unit. The guys were very polite and professional. When they left you would never have known they had been there except for the new Mitsubishi unit on the wall!! would highly recommend the Twin Tech team.

by varga p. in Pickering on Twintech Heating and Cooling

Installed professionally, no delays, no rework needed. Very reliable contractor and sales person. Also installed BBQ gas line and some duct work.

by Private User on Twintech Heating and Cooling

Greg and Grant are friendly, reliable, and knowledgeable HVAC professionals. The twins, Dave and the entire team provided efficient top quality service. Our family plns to use Twintech for all of our future HVAC needs.

by peter in Whitby on Twintech Heating and Cooling

Very impressed with this company. They show up on time , kept my place clean and after they left it looks like they were never there. Very professional team. Those people know what they doing . Their installation was on the highest standard. They are very knowledgeable especially they're worker Peter. I strongly recommend this company to everybody. After the installation I receive the call making sure I'm satisfied with their products and their job. Bravo!!!

by James in Bowmanville on Twintech Heating and Cooling

Greg and his brother were referred to us by a friend. They arrived when they said they would, did an exceptional job and left the place as tidy or tidier then they found it. Their professionalism is only surpassed by their kind and friendly demeanor. Even after several calls to help me with my high tech thermostat I feel that I could always call with any concern (No one responds to my texts as quickly as Greg) and have a friendly helpful response. I found out their grandfather started the company and now as a 3rd generation company, they are doing their grandfather proud. I would highly recommend Twintech over any other hvac company out there.

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 Rebates Pickering

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - June 30, 2025

If you’re considering upgrading your home’s heating and cooling system in the Durham Region, a Panasonic heat pump is one of the most efficient and eco-friendly choices available. At Twintech Heating & Cooling, we specialize in pro

Read More

Panasonic Heat Pump Consultation in Durham

  • 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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When Should I Switch to a Heat Pump?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - June 25, 2025

Homeowners across North America are increasingly asking a vital question: When should I switch to a heat pump As energy costs rise and environmental awareness grows, more people are considering heat pumps as a smarter, cleaner alternative to traditi

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Keeping Your Furnace Costs Down

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

Keeping furnace costs down is essential for a warm and cost-effective winter. Here are some ways to make heating your home more efficient: 1. Regular Maintenance Schedule a professional tune-up once a year. Regular maintenance, such as clean

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