Durham Region Air Conditioning Repair, Service and Installation
MRCOOL is one of the most innovative HVAC manufacturers around. They have a large range of heating and cooling systems, and even offer truly DIY ductless mini splits as well as a great app that allows your system to connect with Google Assistant and Amazon’s Alexa. If that’s not enough they also boast one of the most efficient geothermal systems with their unique MRCOOL GeoCool line of products.
If you have a MRCOOL furnace and are experiencing some minor hiccups/issues with it, try these few troubleshooting tips.
First, check your filters. Clogged filters can do long-term damage if they are left unclean because the system becomes backed up. It will also send dirty air around your home which is bad especially if you have sensitive allergies. If you have a disposable filter then replace it with the proper size and if you have a permanent one, wash it with soap and water, rinse it thoroughly and let it dry all the way before putting it back.
Another reason it might not be heating could be an issue with the thermostat. Make sure you’ve set your thermostat correctly and that the adjustable calibration scale is set up right. If it’s set correctly it could be a software issue.
Lastly, if your furnace isn’t turning on, then the issue is likely with the power. Go to your circuit board and make sure the fuses aren’t cracked or blown. If it’s blown, replace it but otherwise resetting the circuit should do the trick.
See What Our Customers Are Saying:
Aug 8, 2025
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.
Aug 8, 2025
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!
Feb 18, 2025
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.
Feb 18, 2025
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!
Feb 18, 2025
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!
Feb 18, 2025
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!
Feb 18, 2025
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.
Aug 17, 2024
I returned from vacation to find my AC unit on the Fritz. After calling way too many places I connected with TwinTech. Ive used the company in the past for my furnace so I was happy when I recognized Greg at my front door. Hes great and the service is always top notch. Id highly recommend using twintech for honest, superior service in the Durham region. Thanks!
Aug 13, 2024
I called Twin Tech when my air conditioning stopped working. Greg came over to diagnose the issue - the same day. He was able to diagnose the issue and resolve it quite quickly. Although it was a quick fix, Greg was very thorough in explaining the issue and provided great advice. Not to mention, I felt very comfortable having Greg in my home - which I consider very important when hiring a service provider. Twin Tech will be my go-to from now on. Thank you!!
Aug 12, 2024
Just hired TwinTech Heating & Cooling to do an A/C Unit removal & reinstall to allow for landscaping access on the side of my house, and they were wonderful!
Bob, Greg & Mitch make a great team! Quick appointment times, super knowledgeable, expert troubleshooting capabilities & very customer service oriented.
I would highly recommend them for all of your HVAC needs! Great job guys!!
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mr cool furnace troubleshooting
See What Our Customers Are Saying:
Aug 8, 2025
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.
Aug 8, 2025
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!
Feb 18, 2025
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.
Feb 18, 2025
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!
Feb 18, 2025
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!
Furnace: When to Call a Professional
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - February 24, 2025
A well-functioning furnace is essential for maintaining a comfortable home, especially during the colder months. While regular maintenance can help prevent issues, there are times when professional intervention is necessary. Here are key signs that i
Read MoreKeeping Warm This Fall: Things to Remember
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - October 5, 2016
We can feel it in the air – the cold season is fast approaching. Keeping a home warm is not as easy as 1,2,3 especially if the home is older and doesn’t really have very good insulation. Here are some tips on how you can save money while you are
Read MoreMaximizing Your AC Units Efficiency
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - May 24, 2024
Maximizing your AC unit's efficiency can help you save on energy costs, improve comfort, and extend the lifespan of the system. Here are some practical tips to achieve this: Regular Maintenance Annual Professional Service: Schedule an an
Read MoreThe Importance of Changing Your AC Air Filters
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - July 8, 2024
Changing your AC air filters is a crucial maintenance task that often gets overlooked but has significant impacts on your system’s efficiency, air quality, and overall longevity. Here’s why it’s so important: 1. Improved Air Qual
Read More