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TRUSTED BY MOUNT VERNON, IL HOMEOWNERS

  • Average homeowner rating star icon3.5
    Average homeowner rating
  • Verified reviews icon29
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Mount Vernon, IL

*The Angi rating for Heating And Air Conditioning Service companies in Mount Vernon, IL 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 Mount Vernon, IL 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 May 28, 2026

Find Heating and air conditioning pros in Mount Vernon

Avatar for Pass One Hour Heating & Air Conditioning
Pass One Hour Heating & Air Conditioning
5.0(
7
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallDuctless Mini-split A/C - Install or Replace+9 more

Serving Mount Vernon, IL and surrounding areas

Approved

In business since 1971

Free estimates

Emergency services offered

"Had my spring maintenance done and couldn’t be happier with the service. The technician was on time, professional, and took the time to explain everything clearly they also swapped out my nest thermostat for an ecobee and got it set up. Everything is running great and I highly recommend Pass One Hour."
New Heat & Cooling system
New Heat & Cooling system
New Heat & Cooling system
New Heat & Cooling system
New Heat & Cooling system

+18

4 neighbors recently requested a quote
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Avatar for Inventors Imaginarium
Inventors Imaginarium
New to Angi
Air Ducts & Vents - CleanThermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Mount Vernon, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

We take pride in delivering dependable, high-quality craftsmanship with honest communication from start to finish. Whether you're planning a small repair or a larger renovation, our goal is to provide durable, professional results that improve the value, function, and appearance of your property.\n\nOur services include residential construction, remodeling, repairs, renovations, demolition, framing, drywall, flooring, painting, trim and finish carpentry, deck and porch work, fencing, siding, roofing repairs, door and window installation, and general handyman services. We also handle property improvements, rental property maintenance, and custom projects tailored to your needs.\n\nEvery project is completed with attention to detail, quality materials, and a commitment to doing the job right the first time. We believe in treating every home as if it were our own by maintaining a clean worksite, respecting your property, and keeping you informed throughout the project. \n\nChoose us today!

4 neighbors recently requested a quote
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Avatar for Ohana Heating & Air
Ohana Heating & Air
4.4(
33
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+28 more

Serving Mount Vernon, IL and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"They installed a HVAC unit in a new building/office."
Office Units
Court House Mini
VRF
Mechanics shop
Garage

+1

Response time1 day
Recommended by92%of homeowners
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Avatar for Greathouse Mechanical, LLC
Greathouse Mechanical, LLC
5.0(
10
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+21 more

Serving Mount Vernon, IL and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"Greathouse mechanical came out at time promised, they were professional and knowledgeable. They serviced the air conditioner and showed me my optioned in replacing my heating and air units. I decided to go with another business. I recommend Greathouse, they are on the high side, but if you need someone right away, I would call them again."
Response time12 hrs
Recommended by100%of homeowners
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Wabash Electric Heating & Cooling LLC
5.0(
7
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+28 more

Serving Mount Vernon, IL and surrounding areas

In business since 1970

Free estimates

Emergency services offered

"Got my ductwork cleaned out and replace 23 outlet covers. All done in record time. Very friendly and professional and explained the whole process as he went and showed me all the junk that came out of my ducts. Cleaned up as he went along and couldn't even tell he had been here except that there's no dust floating around in the air now."
Response time8 hrs
Recommended by100%of homeowners
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Avatar for Rardin Plumbing Heating & A/C
Rardin Plumbing Heating & A/C
4.6(
11
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Mount Vernon, IL and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"It was physical. The workers were really nice along with the owner of the company. The price was fair. It was not a bargain but it was not absorbent either. They are reliable."
Recommended by100%of homeowners
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Showing 1-10 of 57
Heating and Air Conditioning questions, answered by experts

Here’s how AC professionals will clean your AC coils:

  1. Unplug the AC unit or turn off the breaker to the unit in your circuit breaker box.

  2. Remove the faceplate.

  3. Spray a vacuum hose attachment or compressed air can to remove debris, dust, dirt, and grime.

  4. Use a soft-bristled fin comb to remove stubborn caked-on debris.

  5. Use the vacuum hose to suck up any extra debris.

  6. Take a coil-safe cleaning solution and spray it onto the coils. Try to choose a no-rinse solution.

  7. Let the solution sit for at least 15 minutes.

  8. Gently wipe away loosened grime and debris with a microfiber cloth.

  9. Reattach the faceplate, plug in your AC system, or turn the breaker back on.

DIY is possible for basic cleaning. Professional services handle advanced maintenance like recharging the refrigerant.

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

Yes, a dehumidifier and air conditioner can be used simultaneously in a home. A dehumidifier can bolster an air conditioner’s efficiency. Typically, a dehumidifier is used when the air conditioner alone cannot keep a home’s humidity levels at a comfortable indoor humidity level, which should, ideally, be between 30% and 50%.

Vents may blow air even though the air conditioning system is off because of the pressure difference between indoor and outdoor air or drafts from leaky ducts. Check for leaks or drafts in the ductwork or around windows and doors.

The Mount Vernon, IL 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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