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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon1.4k+
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Cornelius - Updated Nov 2026

Avatar for Integrity Air, LLC
Integrity Air, LLC
4.8(
237
)
Ductless Mini-split A/C - Install or ReplaceThermostat - Install or Replace

Serving Cornelius, OR and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"Excellent service. Jace not only helped me with this but also with other options to consider in the future one it is time to replace our existing forced air furnace. He was very knowledgeable and took the time to answer all my questions. And the cost was lower than other HVAC companies quoted us for the same equipment. Will definitely use them again for any future HVAC needs."
New Gas Furnace
Venting and Duct Work
Old Furnace
Duct Work
Gas Furnace Replacement 1

+1

Response time7 hrs
Response rate87%
3 neighbors recently requested a quote
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

"Extremely well. The house was a rental and the previous tenants had a Golden Retriever dog (long hair). The ducts were clogged with dog hair. The crew arrived on time and went right to work vacuuming every duct and the HVAC unit."
Additional Photos
What we have pulled out of ducts
Before we did the cleaning
Better Air Northwest Owners
Better Air Northwest Team

+2

Response time2 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Elevate Heating & Cooling, Inc
Elevate Heating & Cooling, Inc
5.0(
31
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service

Serving Cornelius, OR and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Chase, our Elevate service technician discovered a dangerous DIY install on the furnace. He explained everything in detail, repaired the damaged gas line, and prepared the entire air/heat system for winter. Aside from potentially saving our lives, he was kind enough to let me follow him around asking questions so I could learn how it all works. Thank you Chase!"
New system!
Adding A/C to existing ductwork
replaced this coil
getting ready to install a new furnace
Pre-inspection

+6

Response time6 hrs
Response rate89%
13 neighbors recently requested a quote
Avatar for Revival Energy LLC
Revival Energy LLC
4.7(
615
)
Electric Furnace / Forced Air Heating System - InstallHeat Pump - Install or ReplaceGas Furnace / Forced Air Heating System - Install+47 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Ben Fish showed up right on time, went up to my attic space for a visual inspection (something I should have done a long time ago but didn't) and measured the depth of insulation, appliance efficiency, energy loss from floor/walls/windows, and put it on a nice, easy-to-read spreadsheet, as well as throroughly explained everything.  There was absolutely no pressure to buy anything, as there had been in the past with HVAC repairmen.  One reason I wanted this audit was for the impartial 3rd party feedback, which is exactly what I got.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time1 day
Response rate100%
5 neighbors recently requested a quote
Avatar for Air Control Systems, Inc.
Air Control Systems, Inc.
4.7(
93
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+12 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Fast response to my inquiry, great prices and excellent customer service. Had alot of questions, not being familiar with having a heat pump, recently bought this house, and they explained my system to me so I that actually understood what to expect and watch for. So helpful! If I could give more than 5 stars for customer service I would!!! Will definitely use them for all my future HVAC needs and so should you."
Response time3 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for Integrity Air, LLC
Integrity Air, LLC
4.8(
46
)
Electric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+1 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"They did a great job in a timely manner for a good price. I would recommend them. They came out and attempted to fix my furnace. The initial fix solved one problem, but then an even larger problem was found. At that point they recommended replacing the furnace as it was already on its last leg anyway. I got a quote for work from them and 2 other companies. The other companies agreed a replacement was the best option. Integrity Air had the best price. Their technicians were very friendly and explained what they were doing during all steps. They were prompt with their service. I had a secondary source for heat (gas fireplace inside), so I was in no rush and had the service calls when it was convenient for my schedule. They did have appointments available sooner had I wanted and needed the heat fixed sooner."
Response time5 hrs
Recommended by97%of homeowners
Avatar for Columbia Heating & Cooling LLC
Columbia Heating & Cooling LLC
4.5(
81
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+1 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"Alyssa was the technician and she was very professional and had the expertise to fix our problem. She also cleaned everything--the sensor, cleared the drains, checked the flue piping and cycled the system a few times to be sure everything was working properly. We were so impressed with her we signed up for the annual service for our heater and A/C. We trusted her and will definitely recommend this company to everyone we know.
"
Gas Furnace
Gas Furnace
9 neighbors recently requested a quote
Recommended by83%of homeowners
Prestige Air Duct Cleaning
5.0(
422
)
Air Ducts & Vents - Clean

Serving Cornelius, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Credit card accepted

"Overall we had a positive experience with this company from the person who sold us the furnace / HVAC system to the installers. All were courteous and respectful. All of our questions we answered and the work was done in a time manner and with excellence. Thank you very much! We are quite pleased."
Response time2 hrs
Response rate99%
63 neighbors recently requested a quote
Avatar for Roth Home
Roth Home
4.6(
248
)
Central A/C - InstallAir Ducts & Vents - CleanCentral A/C - Service or Repair+5 more

Serving Cornelius, OR and surrounding areas

Approved (Corporate)

In business since 1976

Free estimates

Small jobs welcome

HVAC, Plumbing, Electrical & Garage Door Services in the Portland Metro Area \n\nRoth Home has been serving homeowners since 1976 with expert heating, air conditioning, plumbing, electrical, and garage door services across the Portland Metro area and down to Salem. Our experienced technicians provide dependable solutions and responsive, professional care.\n\nTo make home comfort more accessible, we offer Upgrade financing options along with seasonal savings and special offers. Our team is here to help you find the right solution for your home and budget.\n\nBook online or call 503-673-6394 to schedule your service today.

My jobs
My jobs
My jobs
My jobs
My jobs

+6

25 neighbors recently requested a quote
Recommended by83%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Yes. It's normal for the AC compressor to cycle on and off intermittently in dry mode as it maintains the desired humidity level. The compressor cycles to prevent over-dehumidification and to maintain a comfortable indoor environment. This cycling behavior ensures efficient operation and optimal humidity control, contributing to the overall effectiveness of the dry mode function in your AC system.

A blockage in the ductwork may prevent air from flowing through the vent. If some rooms in your home are very hot or cold and another isn't, that can be a sign that a vent is blocked. Another sign of a blockage is a buildup of dirt or dust around the vent. In either case, a duct installer or cleaning service can investigate the issue for you and recommend a course of action.

Most experts recommend getting three to five HVAC quotes from licensed, insured, reputable local heating and cooling companies. Getting multiple detailed HVAC quotes (but not too many) lets you compare the equipment, services, and prices of several contractors without being overwhelmed by options. It can also let you see if one contractor’s prices are much higher or lower than the others and give you a chance to ask for clarification. That way, you can weed out any contractors who aren’t providing quality services or materials and find the company that best meets your budget, quality requirements, and long-term goals.

A dirty AC filter can lower the efficiency of your system, so depending on how dirty it was, you may notice a temperature difference when you clean your filter. You can try other solutions if your AC isn’t blowing as cold as it used to. You can call in a local HVAC tech to make sure everything is running correctly, fix your air seal if it’s a window unit, and clean your coils.

You should plan to change your AC unit's filter every one to three months, depending on the manufacturer's recommendations. You should also clean the coils at least once per year, but if you have pets or someone in your household has allergies, you might need to clean them more often. Fortunately, many pros will clean the coils and change the filter for you during an inspection, which you should schedule once or twice per year.

The Cornelius, OR homeowners’ guide to heating and air conditioning services

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