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TRUSTED BY HERCULANEUM, MO HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon81
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Herculaneum, MO

*The Angi rating for Heating And Air Conditioning Service companies in Herculaneum, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Herculaneum, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on September 24, 2025

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

Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+25 more

Serving Herculaneum, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Installed a new gas water heater. Was very knowledgeable and got it done. Great job, thank you Sam."
A/C replacement
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

6 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Mechanical Climate Solutions, LLC
Mechanical Climate Solutions, LLC
4.9(
66
)
Central A/C - Service or RepairElectric Boiler or Radiator Heating System - RepairElectric Boiler or Radiator Heating System - Repair - For Business+11 more

Serving Herculaneum, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"MCS techs were very courteous. New HVAC system install went well. They explained all their work professionally. Also found a crack in the flue and replaced which was overlooked by a previous contractor. They are very thorough and reasonable. I highly recommend MCS."
17 Seer 2 stage condensing unit.
Response time11 hrs
2 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Comfortable Carla's, LLC
Comfortable Carla's, LLC
5.0(
23
)
Central A/C - InstallCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Install+3 more

Serving Herculaneum, MO and surrounding areas

Approved

In business since 1954

Free estimates

Emergency services offered

"Wow! This company did an outstanding job. Our furnace was old and not working and Josh gave us a better price than the other companies and got it put in the next day. He kept in touch with me the whole time and the guys that installed the furnace and cleaned out the flue were great also. They even cleaned up afterwards. It all went very smoothly. We would definitely recommend Comfortable Carla's Heating and Cooling. Thanks so much for a great job well done!"
Double System Install
Double System Install
Double System Install
Furnace Replacement
Furnace Replacement

+1

Response time4 hrs
Response rate100%
75 neighbors recently requested a quote
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Avatar for Froggy's Heating and Air, LLC
Froggy's Heating and Air, LLC
4.4(
91
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+2 more

Serving Herculaneum, MO and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"He serviced our HVAC system. House was dormant for about 9 months and for sale. We noticed the system didn?t smell good and wasn?t cooling the house right. So we called him to service our house. He found our duct work to be compromised and pulled out some dead animals. He fixed the ducts and put this shiney metal tape on all the seams. Checked the AC outside for refrigerant gas and operation. Then he checked our furnace inside. The filter was black and musty, he didn?t have our size on his truck but he ordered a couple from Walmart and had them delivered while he worked on our furnace blower. He found the round fan was all clogged with hair and dirt. He pulled it out and cleaned it outside, used some chemicals that made it shiny and cleaned. Checked the fan blades with a tool to make sure it was blowing a strong stream of air. Took a shop vac cleaned each of our floor vents and put about 10 or 15 foot of hose going in each direction. For a man by himself he was very"
Heating & Cooling 1
Heating & Cooling 1
Heating & Cooling 1
Response time11 hrs
4 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for All American Appliance Service Inc
All American Appliance Service Inc
4.5(
531
)
Central A/C - Service or RepairThermostat - Repair or Reprogram

Serving Herculaneum, MO and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"The service tech was prompt, friendly, and helpful. They identified the issue with two fridges, and they recommended replacement or adjustment rather than costly unnecessary repairs."
Additional Photos
Response time2 days
2 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for RDI CONTRACTORS LLC
RDI CONTRACTORS LLC
5.0(
11
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair

Serving Herculaneum, MO and surrounding areas

Approved

In business since 2025

Emergency services offered

Credit card accepted

"Austin was on time and made short work of getting my furnace working again."
Response time5 hrs
33 neighbors recently requested a quote
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Avatar for Dryer Vent Rescue
Dryer Vent Rescue
5.0(
13
)
Air Ducts & Vents - Clean

Serving Herculaneum, MO and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"They did a fabulous job in cleaning all the vents in the house. The entire crew was very professional and treated our home with care. Even our dog loved them! We highly recommend using them!"
Imperial MO Air Duct
Imperial MO Air Duct
Imperial MO Air Duct
Imperial MO Air Duct
Imperial MO Air Duct

+21

Response time8 hrs
Response rate100%
3 neighbors recently requested a quote
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Avatar for House Doctor's
House Doctor's
5.0(
3
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessCentral A/C - Install+43 more

Serving Herculaneum, MO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Furance was not working, call House Doctor. They were out the next day and got it back up and running. Professional and efficient. Plus, very affordable."
Hvac Install
Hvac Install
Hvac Install
Hvac Install
Hvac Install

+1

Request Quote
Avatar for Willys Handyman Service
Willys Handyman Service
4.5(
19
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Herculaneum, MO and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Customers say: True professional

"I was completely happy with all the work done. Willy replaced locksets, repaired door plumbs, painted, and replaced a toilet."
Handymen Project
Handicap ramp
Handymen Project
Handicap ramp
Additional Photos

+2

Response time3 days
Response rate100%
Recommended by44%of homeowners
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...
Showing 1-10 of 195
Heating and Air Conditioning FAQs, answered by experts

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

Yes, a frozen AC unit can affect your indoor air quality since the reduced airflow won't be as effective at removing air pollutants, like dust and other allergens. Additionally, ice around the unit can create excess moisture, leading to mold and mildew that can damage your home if you don’t catch it early.

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.

There are many signs of a bad AC fan motor, including if the fan blades don’t spin when the AC kicks on or if they keep spinning when the AC is off. The AC fan cools down the condenser coil, so a faulty motor can also cause the system to overheat. Unusual noises in the exterior AC unit, including grinding or rattling sounds, may also be a sign that the AC fan motor is worn out.

The average life span of an HVAC system is 15 to 20 years. Even if your old air conditioner is still functional, it isn't as energy-efficient as a newer system (especially one with an Energy Star designation). Older HVAC systems aren't as efficient, and the 10-year mark is when you should start making full system replacement plans. Twenty years in, that plan should be well underway rather than waiting for the unit to die.

The Herculaneum, MO 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.

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