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My AC Unit is Not Working, What Now?

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My AC Unit is Not Working, What Now?

Posted On: June 29, 2022

My AC Unit is Not Working, What Now?

You may encounter many problems with your air conditioner and while it is true that most problems require HVAC experts to repair them, there are some troubleshooting tips that can help homeowners fix the simple issues.


Here is a troubleshooting guide that can help you address some of the most common problems you may experience with your air conditioner:


Your AC Unit Won’t Turn On


If your AC unit is not turning on, check first your outside unit to determine if the condenser is running. Check if the unit is plugged in and your thermostat is set properly. Some thermostats are tricky so homeowners can save themselves time and money just by reading the manual.


Once you’ve checked the condenser, the plug, and the thermostat and it still isn’t turning on, check to see if there is a blown fuse or a tripped circuit breaker. If you do find frozen coil or if the unit is still not turning on, there might be a problem with the motor or the compressor. One of our HVAC experts can repair your system for you.


Your AC Unit is Not Cooling the Air


If your AC unit is turning on and the thermostat is set properly but it is not cooling, there could be a dirty or blocked air condenser. The first thing you can do is check the unit outside and clean its surroundings. If there is any debris or weeds that block the air circulation, remove them.


You also need to check your filter as it might be dirty. When the filter is dirty, it restricts the air to the evaporator coil, leading to a frozen coil. If you use your AC unit often or if you have pets, you might need to change your filter more often. You can pull out your filter and check if you can see through it. If you can’t, then it is dirty.


In some cases, an AC unit that is not cooling the air might have some problems with the compressor or refrigerant. Our HVAC experts can help you fix this issue.


Your AC Unit is Not Cooling Your Home Adequately


If your AC unit is on and set properly but it is not cooling your home adequately, you might have a unit that is not suited best to the size of your home. It is essential to have a system that is sized appropriately for your home to be able to keep your home cool on a hot day.


If this is the case, you might have a problem with the charge or there might be a frozen evaporator coil. If you can see icing on your outdoor unit, turn off your AC unit and call us immediately.




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See What Our Customers Are Saying:

by John from Toronto on Twintech Heating and Cooling

Our furnace bit the dust, and Twintech came out to troubleshoot and diagnose the problem within a couple of hours. Mitch was super helpful, patient, and answered all of our questions. When we decided to get the furnace replaced, the crew was over first thing the next morning and did a fantastic job. Not only did they complete the job in a few hours, but they cleaned up and respected our house as they went, and answered all of our follow-up questions. I've used Twintech for our HVAC needs in the past and will continue to do so. I'd recommend them to anyone, and it feels good to support a local, family-owned business.

by Ryan k on Twintech Heating and Cooling

Dave and the Twintech team were fabulous from day 1 and helped us through the process to identifying a new furnace and AC unit. This was our first time through this process and Dave did a thorough job explaining all the components and was very patience answering all our questions. Dave provided great insights and fair pricing.

The Twintech team did an awesome installation. Very clean and efficient. I would highly recommended their service.

by Louise in Scarborough on Twintech Heating and Cooling

We had a new Amana furnace installed by Twintech and we were very pleased with the installation. It is nice to have a warm house again.

by Private User on Twintech Heating and Cooling

Excellent job. Excellent service. Competitive price. Its rare to find a company with the knowledge and professional results we have experienced with Twintech. The clean and neat installation with attention to detail and drop sheers to respect our property is a clear indication of Twintechs high level of integrity. The 1-1/2 gas line upgrade they did for our pool 3 years ago was awesome. Can't say enough. Thank-you Twintech.

by Private User on Twintech Heating and Cooling

Twitch did a great job with the installation of our new furnace. I really appreciated their honesty and I could trust what they were telling me. Another company tried to suggest significantly more work at a greater cost claiming it was necessary to meet current building code. Twintech is very fair. All staff I meet were friendly, polite and trustworthy. I would recommend Twitch for a furnace.

by Private User on Twintech Heating and Cooling

This is a professional team that's easy to deal with. I would strongly recommend them

by hj.taggart in OSHAWA on Twintech Heating and Cooling

Very professional firm from start to finish!
They removed the old oil tank and furnace. They installed air conditioning and a new propane furnace.
Professional installation, on time and no mess.
Very pleased with their work and would highly recommend the company. Our house is three stories so they spent the time to do all the calculations to make sure we would have great performance on each floor.
Thank you again!

by susieschoeppler in Oshawa on Twintech Heating and Cooling

Upon a routine yearly maintenance, it was discovered there was a leak in the heat exchanger and a I needed a new furnace. I know nothing about these things and was completely stressed out. The company I had the maintenance plan with quoted me a huge number to rent a furnace, I just wanted to cry. Then I spoke to Dave at Twintech. He was so knowledgeable and calming, provided me a fair quote and within a few days I had an amazing crew show up to my house and install my new energy efficient furnace! I have already recommended these wonderful people at Twintech to a good friend of mine. Thank you Twintech!!

by Private User on Twintech Heating and Cooling

Great service and great people to deal with, from sales to installer. I highly recommend this company.

by GR from Oshawa on Twintech Heating and Cooling

Twintech replaced our aging furnace and air conditioner recently. I highly recommend this company. Their quote was competitive, they were on time and respectful of our home and extremely professional. From the salesman to the installers and the owner who followed up afterward to ensure we were satisfied, we are very pleased with the service. We are looking forward to working with this company for all of our HVAC needs for the years to come. Excellent workmanship and service!

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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.

Increasing My AC Unit's Efficiency

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

Improving the efficiency of your air conditioning (AC) unit can lead to lower energy bills and a more comfortable indoor environment. Here are some steps you can take to increase your AC unit's efficiency: Regular Maintenance: Schedule a

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  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - November 21, 2023

If you suspect that your heat pump is frozen, there are several signs and steps you can take to address the issue. Here are some indications that your heat pump may be frozen and what you can do about it: Signs that Your Heat Pump is Frozen:

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  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - February 9, 2024

Yes, a furnace can experience a reduction in efficiency as it ages. Several factors contribute to this decline. Wear and Tear: Over time, the components of a furnace, such as the heat exchanger, blower motor, and igniter, can wear out or become

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Is My Furnace Having Issues?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - March 4, 2025

If you're wondering whether your furnace is having issues, here are some common signs to look for: 1. Unusual Noises Banging, clanking, or squealing sounds may indicate a mechanical issue. Rattling or vibrating can signal loose parts.

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