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

Portable AC not cooling at all

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Portable AC not cooling at all

Posted On: September 8, 2023

Portable AC not cooling at all

It's frustrating when your portable AC unit doesn't seem to be cooling your room effectively.


There are several steps you can take to improve its cooling performance:


Proper Installation: Ensure that the portable AC unit is installed correctly and that the exhaust hose is securely connected to the window or an appropriate exhaust port.


If the hose is leaking hot air back into the room, it will reduce the unit's effectiveness.


Seal Any Air Leaks: Check around the windows and doors for any gaps or leaks where hot air from outside can enter and cool air can escape.


Seal these gaps with weatherstripping or caulk to maintain a better seal.


Use a Fan: You mentioned you have a ceiling fan.


Running a fan alongside the AC can help distribute cool air more evenly throughout the room, making it feel cooler.


Make sure the ceiling fan is rotating counterclockwise during the summer months to create a cooling breeze.


Close Curtains or Blinds: Even though you have blackout curtains, consider closing them during the hottest parts of the day to block out as much sunlight as possible.


This can help reduce the heat entering the room.


Limit Heat Sources: Turn off any unnecessary heat sources such as lights, electronics, and appliances when the AC is running.


These can contribute to the overall heat load in the room.


Maintain the AC Unit: Regularly clean or replace the air filter in your portable AC unit to ensure proper airflow.


A dirty filter can reduce cooling efficiency.


Also, make sure the unit's vents and coils are clean and free from dust and debris.


Size of the AC Unit: Ensure that the BTU (British Thermal Units) rating of your portable AC unit is appropriate for your room size.


In your case, it seems like the unit should be sufficient for a 550 sq ft room, but it's worth double-checking the specifications.


Thermostat Setting: Setting your AC to 61 degrees is quite low, and this can strain the unit.


Try setting it to a more moderate temperature, such as 72-75 degrees, and see if the room cools down effectively at that level.


Extremely low settings can lead to the unit running constantly without achieving the desired temperature.


Give It Time: It can take some time for a portable AC unit to bring the temperature down, especially if the room is very hot to begin with.


Give it a few hours to see if it starts to make a difference.


If you've tried all these steps and are still not getting the desired cooling, it's possible that the unit may have a malfunction, or it may not be adequately sized for the room.


In that case, you may want to contact the manufacturer's customer support or return the unit to the store if it's still under warranty.



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See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

Twintech promptly responded to request for quotation. They were thorough and helpful in explaining options. The quote was very competitive. Installation of new furnace was very professionally completed. Excellent work.

by Rita, Scarborough on Twintech Heating and Cooling

When our old oil furnace finally broke down we decided it was time to finally convert to natural gas and finally install central air conditioning at the same time. Knowing it was going to be a significant investment for us, we wanted to make the right choice. Twintech came highly recommended by a friend and we were not disappointed. From the first contact with the salesperson, until the final touches on the installation, we were so pleased with their service. Everyone from the company was so friendly, efficient and a pleasure to deal with. Best of all, the cost was very competitive. We would certainly recommend Twintech to anyone requiring HVAC work in their home.

by Bob S, Pickering on Twintech Heating and Cooling

Mitch from Twintech came out for our annual furnace inspection. We found him to be friendly, conscientious & he left the work area clean. We were also very impressed with the thoroughness of the job he did. This is the 2nd job we’ve had Twintech do for us & have been very happy with the results for each. We highly recommend this company. Thank you, Mitch, Dave & Greg.

by Brent L on Twintech Heating and Cooling

Work was done on schedule, professionally, according to quote and with minimal inconvenience to building users. Very happy with the end result. The only area for improvement from my experience - need more timely quoting process.

by Karen on Twintech Heating and Cooling

The team was great! Very knowledgeable, professional and extremely helpful. A few days after install the unit didn’t seem to be working, user error, but within minutes of contacting them..on a Saturday.. a tech was on the phone troubleshooting with us. I highly recommend Twintech for your cooling or heating needs. They stand by their products and a pleasure to deal with.

by Rob on Twintech Heating and Cooling

During the hottest week in the summer our old A/C decided to call it quits. I called Twintech Heating & Cooling after receiving a referral from a family member; came highly rated for being an honest, family-run business, who appreciates their customers. Dave was able to accommodate my hectic schedule and book a late evening appointment to walk through the specifics. Greg and Mitch arrived exactly on time a few days later, were very polite and friendly, and within a couple of hours had a new unit up and running. I also received a follow-up call to ensure we were happy with the Amana.

by Linda Robinson on Twintech Heating and Cooling

They were on time and very professional. I'm so glad I decided to go with Twintech, thanks!

by Famcam1953 on Twintech Heating and Cooling

Timely and appreciated - this was during the hottest days this year when our Air and Furnace way.
Efficient. Professional. No BS or overselling. What was promised, was delivered at a cost-effective price point.
Down to earth.

by DG Sellers on Twintech Heating and Cooling

Professionally done and took care to cover all entry floors to the house for the installers to remove the old furnace and install a new furnace.
I also made recommendations of the tankless water heater that we had installed and items to address. We did not know they also installed tankless water heaters.

by Bill, Pickering on Twintech Heating and Cooling

Price was not the cheapest nor the most expensive of my quotes. It's the quality of the installation that makes for a good AC system. The twins' knowledge & professionalism was evident in the small details:
Very clean work. Greg made sure that the refrigerant level & temperature were correct. They reinstall the insulation & vapor barrier around the wall. The outside electrical cords were secured to the wall. Proud to support this local company. Thank you.

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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.

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