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

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Durham Region Air Conditioning Repair, Service and Installation

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


CODE: Green "POWER".
RESULT: Module has power.
FIX: Supply voltage is present at module terminals.

CODE: Red "TRIP".
RESULT: Thermostat demand signal. Y1 is present, but the compressor is not running.
FIX: 1. Compressor protector is open. 2. Outdoor unit power disconnect is open. 3. Compressor circuit breaker or fuse(s) is open. 4. Broken wire or connector is not making contact. 5. Low pressure switch open if present in system. 6. Compressor contactor has failed open.

CODE: Yellow "ALERT" Flash Code 1.
RESULT: Long Run Time. Compressor is running extremely long run cycles.
FIX: 1. Low refrigerant charge. 2. Evaporator blower is not running. 3. Evaporator coil is frozen. 4. Faulty metering device. 5. Condenser coil is dirty. 6. Liquid line restriction (filter drier blocked if present in system). 7. Thermostat is malfunctioning.

CODE: Yellow "ALERT" Flash Code 2.
RESULT: System Pressure Trip. Discharge or suction pressure out of limits or compressor overloaded.
FIX: 1. High head pressure. 2. Condenser coil poor air circulation (dirty, blocked, damaged). 3. Condenser fan is not running. 4. Return air duct has substantial leakage. 5. If low pressure switch present in system, check Flash Code 1 information.

CODE: Yellow "ALERT" Flash Code 3.
RESULT: Short Cycling Compressor is running only briefly.
FIX: 1. Thermostat demand signal is intermittent. 2. Time delay relay or control board defective. 3. If high pressure switch present go to Flash Code 2 information. 4. If low pressure switch present go to Flash Code 1 information.

CODE: Yellow "ALERT" Flash Code 4.
RESULT: Locked Rotor.
FIX: 1. Run capacitor has failed. 2. Low line voltage (contact utility if voltage at disconnect is low). 3. Excessive liquid refrigerant in compressor. 4. Compressor bearings are seized.

CODE: Yellow "ALERT" Flash Code 5.
RESULT: Open Circuit.
FIX: 1. Outdoor unit power disconnect is open. 2. Compressor circuit breaker or fuse(s) is open. 3. Compressor contactor has failed open. 4. High pressure switch is open and requires manual reset. 5. Open circuit in compressor supply wiring or connections. 6. Unusually long compressor protector reset time due to extreme ambient temperature. 7. Compressor windings are damaged.

CODE: Yellow "ALERT" Flash Code 6.
RESULT: Open Start Circuit. Current only in run circuit.
FIX: 1. Run capacitor has failed. 2. Open circuit in compressor start wiring or connections. 3. Compressor start winding is damaged.

CODE: Yellow "ALERT" Flash Code 7.
RESULT: Open Run Circuit Current only in start circuit.
FIX: 1. Open circuit in compressor run wiring or connections. 2. Compressor run winding is damaged.

CODE: Yellow "ALERT" Flash Code 8.
RESULT: Welded Contactor Compressor always runs.
FIX: 1. Compressor contactor has failed closed. 2. Thermostat demand signal not connected to module.

CODE: Yellow "ALERT" Flash Code 9.
RESULT: Low Voltage Control circuit < 17VAC.
FIX: 1. Control circuit transformer is overloaded. 2. Low line voltage (contact utility if voltage at disconnect is low).


See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

This review is late coming so my apologies to the amazing Twin Tech team! I contacted Dave at Twin Tech for a quote this past Feb (as I was collecting a few) and his recommendation was excellent. From the first meeting with Dave to the team installing the new furnace, not once did i feel uncomfortable . The team were extremely professional yet personable and clean and tidy. Decent companies still exist!
The new furnace just purrs and its just amazing the difference it has made!
(PS my sibling ended up getting a furnace from them as well)

by Private User on Twintech Heating and Cooling

The service was Twintech was excellent.
Dave our salesperson was easy to talk to and was professional. The unit recommended meets our needs and budget.
Greg and his team arrived on time for the installation and even got rid of the garbage the contractors left in our furnace.
Would definitely recommend Twintech.

by Steve V, Toronto on Twintech Heating and Cooling

Our old water tank was installed in 1997. Wasn't working as well as it should so we looked into a tankless as it is more efficient and a space saver! we had used Twintech in the past for a furnace cleaning and were satisfied with that so we decided to ask for a quote for the changeover. Gary arrived and provided the options and the quote fit within our budget so we decide to go with them after receiving a few alternative quotes from other companies. They did what the said would be done and it was completed within a reasonable time frame! Removal and cleanup of the old tank was seamless. We are now enjoying consistent and efficient Hot water! I recommend Twintech and would use them for future projects!

by New AC Unit + Humidifier on Twintech Heating and Cooling

One of the most honest HVAC companies out there! Dave was very helpful and informative in helping us choose a new AC unit. While they weren’t the lowest quote, we went with them because we trusted Dave and he was the most honest guy out of the companies that quoted us.
Greg and his crew who installed the unit were very professional and did a great job. If I could do it over again I would choose Twintech again.

by Private User on Twintech Heating and Cooling

Relocated and replaced our air conditioning unit. Fast, professional, and high quality service. We would definitely use them again for future projects!

by Ian, Toronto on Twintech Heating and Cooling

The term excellent or incredible does not seem high enough praise for the Twintech Heating and cooling company that recently replaced our 15 year old furnace. To start with, the response from Dave at Twintech to our original pricing request was the quickest and most professional of the 5 prices we received which included two of the primary natural gas providers. The Twintech pricing was the most competitive by a considerable margin.
We had Dave visit our home to confirm all pricing which he did and scheduled us for next day installation which was not offered my the majority of the other providers.
The installation; the team arrived on time and provided coverings to all of the hardwood flooring and stairs and proceeded with the removal and reinstallation of the new furnace, the workers predicated six hours and were completed in five hours. I have to mention how courteous and polite the workers were each time we interacted with them from start to finish.
The final result was amazing, all materials were cleaned up and removed from the house and the workmanship very impressive.
One feature that really stood out for me which shows a high level of professionalism was that we had various condensation hoses from the furnace , humidifier and an air filtration unit meeting at the one drain, the installation crew ran PVC tubing including elbows along two sides of the furnace to guide the hoses into one PVC tube at the drain, it looks great!
When the install was completed and tested the Twintech technician guided us through the features and recommendation's for care of the new furnace.
We highly recommend Twintech to anyone for the outstanding service provided to us.

by Stephen, Pickering on Twintech Heating and Cooling

I didn't hesitate to call Twintech in for a 2nd time as they did an outstanding job installing my new furnace last year. This time my 18 year old air conditioner was on its last legs. Greg and the team are top notch, highly skilled technicians. The job was executed in a timely and professional manner. Greg was extremely thorough and went the extra mile to make sure everything was operating efficiently. Lastly, Dave is a true gentleman and really made the customer experience pleasurable and worry free. Always remember that good work ain't cheap and cheap work ain't good.

by Derek, Whitby on Twintech Heating and Cooling

It's so hard to find solid companies these days, but I was very pleased to find one in Twintech. Greg and his crew were very clean, respectful and professional. We were most impressed at how all the things they said they would do, were done. Sounds strange, but usually when a contractor comes to your home they say they will take care of this and that, make sure this is done, etc but when the work starts you have to constantly remind them of your previous discussions. Greg ensured every item he said he would do was done, no reminders required. The work was done right, at a fair price and on time. We will be sure to call them when our A/C unit dies (fingers crossed that's not going to happen too soon :) )

by Patrick, Toronto on Twintech Heating and Cooling

Replaced our aging hot water tank with a tankless system. Excellent work, fast efficient and clean.

Walked us through the new system and recommended maintenance schedule.

This is our second time working with TwinTech and we are very happy with the quality of their work and professionalism.

by Troy, Toronto on Twintech Heating and Cooling

Efficient work and great follow up by the team at Twin Tech. Great product and communication.

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!

So My Air Conditioner Stopped Working, What Now?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - August 13, 2024

If your air conditioner has stopped working, it can be frustrating, especially during a hot day. Here’s a step-by-step guide on what to do next: 1. Check the Thermostat Ensure that your thermostat is set to "cool" and that th

Read More

Increasing the Longevity of Your Air Conditioner

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - August 18, 2024

Increasing the Longevity of Your Air Conditioner Your air conditioner is an essential appliance, especially during the hot summer months. Proper care and maintenance can significantly extend its lifespan, saving you money on repairs and replacements

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Intermittent Igniter Issues (natural gas, Armstrong Air Ultra V)

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - March 26, 2023

Here's the sitch.I've replaced my igniter 3-4 times in the last year. Figured I'd just gotten cheap ones. Maybe I got oil on it, maybe chemicals/moisture from nearby washing machine/shower (there's talk of this online, idk). Anyway, I bought a beefie

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How does the AC get billed?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - August 23, 2023

I just moved in with my best friend and we are confused on how the AC will be determined how much it costs us. We are currently going through a 110° heatwave where we live. The issue IS NOT what the temperature is set at, I grew up without

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