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Avatar for Aviator Heating & Cooling
Aviator Heating & Cooling
4.9(
74
)
Central A/C - Service or Repair

Serving Cornelius, OR and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"We called several HVAC companies for our ductless mini split, but Aviator was the only one that responded quickly. They fixed the issue the next day and saved us from replacing the whole system. Excellent service!"
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+34

1 neighbors recently requested a quote
Recommended by46%of homeowners
Avatar for Better Air Northwest
Better Air Northwest
4.9(
924
)
Air Ducts & Vents - Clean

Serving Cornelius, OR and surrounding areas

Approved

In business since 2009

Emergency services offered

Warranties offered

"Max & Joe came out to our house and were not only professional but also very pleasant to host in our home. They made the entire experience prompt and pain free. While bringing a good amount of great advice for our air quality it was evident they knew exactly what they were doing and delivered on their promise of great quality service. Will definitely be calling Better Air for our next service."
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Better Air Northwest Owners
Better Air Northwest Team

+2

Response time2 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Oregon Heating & Air Conditioning, LLC
Oregon Heating & Air Conditioning, LLC
4.8(
106
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Cornelius, OR and surrounding areas

Approved

In business since 1990

Emergency services offered

Credit card accepted

"They come once a year for the checkup on the furnace and air conditioning and make sure everything is set for Winter. 
I have had them every year for years. It has always been good!  
The air conditioner is still working and the furnace is still working, so I guess it is pretty good!"
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32 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Integrity Air, LLC
Integrity Air, LLC
4.8(
237
)
Ductless Mini-split A/C - Install or Replace

Serving Cornelius, OR and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"I am so pleased from start to finish with Integrity Air. I called in Jan for a quote and Ben was very professional and gave a great and reasonable quote for a new AC. The installation crew guys (Kyle?) just left after installation the AC (on a 28 degree day might i add). I highly recommend Integrity Air."
New Gas Furnace
Venting and Duct Work
Old Furnace
Duct Work
Gas Furnace Replacement 1

+1

Response time7 hrs
Response rate87%
14 neighbors recently requested a quote
Avatar for Revival Energy LLC
Revival Energy LLC
4.7(
615
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Beyond excellent. Found out our shops HVAC was out, mind you it’s already 2 pm and pushing 90 degrees outside. Contacted Revival Energy and within an hour, a repair man was addressing the issue. He was able to fix the problem with the upmost kindness and professionalism, all while maintaining social distancing. Definitely saved the day for the shop. 11/10 would recommend."
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+19

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for Columbia NW Heating & Cooling Inc
Columbia NW Heating & Cooling Inc
4.5(
86
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Cornelius, OR and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"I called Columbia NW Heating & Cooling on Monday morning, and spoke with Blake. By 2pm that same day, Dave was at my home with a quote for my new furnace. I spoke with Andrea who schedules installation and by Saturday I had a new furnace installed by Ivan. I'm telling you I have never been happier with a company regarding efficiency and their friendliness & professionalism. I would recommend them to anyone & everyone that needs the services they provide. They keep in touch via phone and follow up with text and emails. As a matter of fact, I will be calling them next year for duct cleaning. Thank you for providing such excellent customer service from the 1st call, to the finished installation...all within 1 week. You cannot go wrong choosing this company. Many thanks!"
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+52

Response time6 hrs
Recommended by85%of homeowners
Avatar for HomePro Heating + Air
HomePro Heating + Air
5.0(
11
)
Central A/C - Install

Serving Cornelius, OR and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Had a 40 year old Lennox furnace that gave up the ghost. HomePro Heating + Air responded to a request immediately and within a amazingly fast removal in installation of my new furnace. The team was extremely polite and professional and respectful of my home. Price quoted was way better that I was expecting. If you are looking for a great team of professionals. Look no further. Thank you so much and Happy New Year! - Jan L."
Furnace repair
Barclay st
New het pump install
System Diagnostic
Response time8 hrs
Response rate100%
7 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

Yes. Your air supply should be balanced. The return and supply ducts need to maintain that balance, and this only occurs because an equal amount of air should be entering and leaving your HVAC system. Changes in pressure, extreme weather, and blocking vents with furniture or your stuff can make the air supply unbalanced and cause your home to get too cold or hot.

They can, but it’s not as common. Window AC units are much smaller than whole-house systems and less likely to develop refrigerant leaks or similar issues. As a result, you will rarely need to add a new refrigerant, limiting overcharging problems. However, it’s still important to leave refrigerant management in the hands of professionals when window units need work.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

Yes, scorpions can enter a home through AC vents, especially if the system is not well-sealed. As excellent climbers, they can scale a home's exterior and squeeze through gaps as small as 1/16 of an inch. Scorpions are often attracted to the moisture around air conditioning ducts or seek cooler areas during hot weather, using vents as a pathway inside. They may slip through small openings where the duct meets the vent cover and travel within walls before emerging. To prevent this, inspect your vents, seal any gaps, and consider installing fine mesh screens.

Common signs of insufficient return air include uneven temperatures, with some parts of your home feeling hotter or colder than others, and noticeable differences in air pressure between rooms. You might also observe that more air is blowing in rooms closer to the AC unit. Leaky air ducts can also be a related issue or clue.

The Cornelius, OR homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.