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Top-Rated Central a/c service or repairers in Portage-des-sioux - Updated Nov 2026

Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I recently had a positive experience with Dunn Service regarding boiler issues, and I wanted to share my thoughts. The technician arrived promptly at the scheduled time and approached their tasks with expertise and precision, ensuring that all problems were thoroughly addressed. The pricing for their professional services was reasonable. Overall, based on my experience with Dunn Service—characterized by politeness, professionalism, and fair pricing—I would highly recommend their services to anyone facing heating and air conditioning issues."
Additional Photos
Response time2 days
13 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Project: Repair or Service a Central Air Conditioning System Sam from Liberty is GREAT! I had my AC recharged earlier this year and they charged me $170 per pound for freon!! This is the dirty little secret..You (and they) can buy it for $29 a pound on the internet....so I lost the first round with SmartHouse??? overpaid for 2 pounds plus service call plus labor.....A month later. I accidetnally cut a hole in my line in the garage.lost 5 pounbds of freon.I called all the AC companies I could find and asked them how much per pound the cheapest was $85!! some for $150!! Oh they all lie to you "the price is going up" R22 freon will be outlawed in 2020 our costs have gone up" BS! they all want to stick you for maybe an extra $600 wihtout you knowing it if you need 5 pounds. They are all con artists and liars . I checked with about 5 companies and got the cheapeast bid of $1000 ish and most around $1300! I told them I knew about the mark up on freon and they all did their little tap dance. I finally found Sam on Craigslit under services rendered...Called him he said he would give me a fixed price he knew all about the markup scam! He got the job done for $525!! Sam is a hard worker and didint show up til 7pm and had one more call that night after me! He welded my pipe vac'd the system and charged it up as good as new! While most of these AC company rackets try to get rich off of each job. Sam has a different philosophy he gives a fair deall and justs works harder than everyone else and makes it up on volume. Also he is a one man company so he has very littel overhead...One slight complaint..he hinted that he would be over by 4:15 PM but didn't make it til 7pm as he has other jobs he said were"ahead of me" I suspecet he got a job that he would lose if he didnt take it right away and could tell I would wait....Just a guess....Anyway it was worth the wait ...they say you can get Good Fast OR Cheap Pick 2. Oh and here is a warning ..If you ask for after hours service from any of the established crooked companies get ready to pay $249 a pound for freon!!!! Less"
A/C replacement
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+10

6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Hively Home Comfort LLC
Hively Home Comfort LLC
4.8(
50
)
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

3 neighbors recently requested a quote
Recommended by62%of homeowners
C-MAC Development, LLC
New to Angi
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

C-MAC Development, LLC offers quality services to clients at reasonable prices. Our courteous staff has the professional tools and experience necessary to help with all your needs. We specialize in interior and exterior painting, kitchen and bath remodels, flooring, window installations, fences and decks. Call today to get in touch with our staff, and to learn more about what we have to offer!

Avatar for ARCO Heating & Cooling
ARCO Heating & Cooling
New to Angi
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

Approved

In business since 1963

Free estimates

Warranties offered

For more than 60 years, ARCO Heating & Cooling has been the local HVAC company that residents and businesses turn to for their heating and cooling needs. What began as a small business has grown into a cornerstone of the St. Charles, St. Louis, & Illinois communities, providing dependable service designed to keep our neighbors comfortable year-round. As a family-owned, local HVAC company, we’re more than just a service provider—we’re part of the community. We live and work right here in the St. Charles, St. Louis, & Illinois Metro areas, so we understand the unique climate challenges our neighbors face. This local connection fuels our dedication to providing personalized service and dependable solutions that make life easier for our customers.

AC Data Plate
AC Wiring
AC Wiring 2
AC Voltage Readings
TitleAC Wiring 3

+20

Response time8 hrs
Avatar for Vitt Heating & Air Conditioning Co Inc
Vitt Heating & Air Conditioning Co Inc
4.7(
161
)
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"The service provider appropriately diagnosed the problem timely and offered acceptable repair options. The company was extremely responsive with the initial service call as well as with the follow-up repair. I would definitely recommend their services to others."
Military Discounts (retired & active)
Senior Citizen Discounts
Residential HVAC
Multifamily & Commercial Installation & Maintenance
Professionally Installed Ducts

+6

Response time3 days
Response rate100%
Recommended by91%of homeowners
Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
516
)
Central A/C - Service or Repair

Serving Portage-des-sioux, MO and surrounding areas

In business since 1979

Free estimates

Emergency services offered

"Everything went perfectly with Anton's... from the scheduling assistant actually walking me through several DIY steps I could take while on the phone with her to avoid a service call, to the actual service MANAGER coming out on the call so his crew could attend a training, to helping me get my system back up and running... just an amazing experience all the way around."
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+18

Response time12 hrs
Response rate100%
3 neighbors recently requested a quote
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FAQs for central a/c service or repair projects in Portage-des-sioux, MO

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The Portage-des-sioux, MO homeowners’ guide to central a/c service or repairs

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