$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 napoleon air conditioner, look no further! Our comprehensive napoleon air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.


PROBLEM: Unit will not operate,
RESULT: Power disconnected or loose connection.
FIX: Check power supply to unit. Check voltage at contactor.

PROBLEM: Unit will not operate,
RESULT: Blown fuse / breaker tripped.
FIX: Replace fuses/reset breaker.

PROBLEM: Unit will not operate,
RESULT: Thermostat out of calibration is set too high.
FIX: Reset.

PROBLEM: Unit will not operate,
RESULT: Contactor defective.
FIX: Check for 24VAC at contactor coil - replace if open.

PROBLEM: Unit will not operate,
RESULT: Transformer defective.
FIX: Check wiring - replace transformer.

PROBLEM: Unit will not operate,
RESULT: High pressure control open (if provided).
FIX: Reset - see high pressure connection.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Run or start capacitor defective.
FIX: Replace.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Start relay defective.
FIX: Replace.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Loose wire.
FIX: Check for correct voltage at compressor - check and tighten all connections.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Compressor stuck, grounded or open motor winding, open internal overload.
FIX: Wait at least 2 hours for overload to reset; if still open, replace the compressor.

PROBLEM: Too little cooling.
RESULT: Low voltage condition.
FIX: Add start kit components.

PROBLEM: Too little cooling.
RESULT: Improperly sized unit.
FIX: Recalculate load.

PROBLEM: Too little cooling.
RESULT: Improper indoor airflow.
FIX: Check-should be approximately 400 CFM per ton.

PROBLEM: Too little cooling.
RESULT: Incorrect refrigerant charge.
FIX: Charge per procedure in installation manual.

PROBLEM: Too little cooling.
RESULT: Air, non-condensables or moisture in system.
FIX: Recover refrigerant.

PROBLEM: Compressor operates in short cycles.
RESULT: Incorrect voltage.
FIX: At compressor terminals, voltage must be +/10% of nameplate marking when unit is operating.

PROBLEM: Compressor operates in short cycles.
RESULT: Defective overload protector.
FIX: Replace - check for correct voltage.

PROBLEM: Compressor operates in short cycles.
RESULT: Refrigerant undercharge.
FIX: Add refrigerant.

PROBLEM: High head pressure; Low suction pressure.
RESULT: Restriction in liquid line, expansion device or filter drier.
FIX: Remove or replace defective component.

PROBLEM: High head pressure; Low suction pressure.
RESULT: Lack of sufficient indoor airflow.
FIX: Clean/check filters, registers, or evaporator coil that may cause a restriction.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Dirty outdoor coil.
FIX: Clean coil.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Refrigerant overcharge.
FIX: Correct system charge.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Outdoor fan not running.
FIX: Repair or replace.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.

PROBLEM: Low head pressure; High suction pressure.
RESULT: Expansion device stuck in open position.
FIX: Replace expansion device.

PROBLEM: Low head pressure; High suction pressure.
RESULT: Defective compressor valves.
FIX: Replace compressor.

PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.

PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Operating below 65F (18C) outdoors.
FIX: Add low ambient kit.

PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Moisture in system.
FIX: Recover refrigerant - evacuate and recharge - replace filter drier.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Excessive load.
FIX: Recheck load calculation.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Defective compressor.
FIX: Replace.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: TXV hunting.
FIX: Check TXV bulb clamp - check air distribution on coil - replace TXV.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.

PROBLEM: Pulsing noise at expansion device or liquid line.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.

PROBLEM: Registers sweat.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.


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!

Will A New AC Make My Home Comfortable?

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

Investing in a new air conditioning (AC) system can indeed significantly enhance the comfort of your home, especially if your current system is outdated or inefficient. Here are a few factors to consider: Efficiency: Newer AC systems are gen

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Why is My AC Unit Acting Up?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - August 27, 2024

When your AC unit starts acting up, it can be due to several common issues: Dirty Air Filters: Clogged or dirty filters restrict airflow, making your AC work harder and less efficiently, leading to poor cooling and potential system damage.

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What You Need to Know Before Buying a Heat Pump

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - November 13, 2023

Buying a heat pump is a significant decision that can impact your home's comfort and energy efficiency. Here are key factors to consider before purchasing a heat pump: Climate and Region: Heat pumps are most effective in moderate

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Twintech: Reliable Furnace Repair in Ajax

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - September 17, 2024

Twintech: Reliable Furnace Repair in Ajax When the chill of winter sets in, having a dependable furnace is crucial to keeping your home warm and comfortable. Twintech Heating and Cooling offers reliable furnace repair services in Ajax, ensuring yo

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