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Q: Does my home need return air vents?

• <div><p>Yes. Return air vents are responsible for gathering and pulling in the warmer air. Once they draw it in, your system conditions the air by removing the warmer molecules from it, allowing your air conditioner to dispense the cooler air back into your home. Not only does this create a more comfortable environment for you, but it also keeps your air conditioner from overworking, resulting in lower energy bills. </p></div>

Q: Is it safe to run an air conditioner with mold?

• <div><p>Running an air conditioner with mold is not safe because it can spread harmful mold spores throughout your home. Exposure to these spores can trigger various health problems, including respiratory issues, allergies, coughing, wheezing, sneezing, itchy eyes, and a sore throat. It may also aggravate asthma in household members. Continued exposure can increase the risk of more serious illnesses like sinus infections, pneumonia, and bronchitis. If you suspect mold in your air conditioner, you should stop using the system until it has been properly cleaned to avoid health risks and further contamination.</p></div>

Q: How often should an HVAC system be serviced?

• <div><p>At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule&mdash;once in the spring for the cooling system and once in the fall for the heating system&mdash;is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.</p></div>

Q: What are the signs of mold in an air conditioner?

• <div><p>One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.</p></div>

Q: Why does my air conditioner turn off by itself at night?

• <div><p>Air conditioners can stop working in the middle of the night for many reasons. Your local power grid might shut down late at night. Power surges can also trip your breakers if too much power is being used in the area at the time. If your AC is connected to a digital thermostat, it gets naturally cooler at night, so the outdoor temperature might dip below the automated setting to turn the cooling system off.</p></div>

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

*The Angi rating for Heating And Air Conditioning Service companies in Marissa, 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 Marissa, 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 January 10, 2025

Find Heating and air conditioning pros in Marissa

Allstar Carpet & Upholstery Care

4.8(

)

Serving Marissa, IL and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Very pleasant experience. I needed a new company and I was so pleased. They did an excellent job. Stains that would always come back after time have disappeared. So fast; so helpful!"

Response time8 hrs

Response rate89%

Recommended by97%of homeowners

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Healthy Home Pest Control & Services

4.4(

386

)

Serving Marissa, IL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Healthy Home Pest Control & Services were fast, affordable, and professional. I would recommend using them for air duct cleaning services."

Response time9 hrs

Response rate95%

515 neighbors recently requested a quote

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The Furnace Guys Heating & Cooling

5.0(

)

Serving Marissa, IL and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Phil has great knowledge of our radiator and furnace and we always call him to fix it. Itâ s an old heating and cooling system because our house is old and he knows how to fix the issues every time."

Response time30 mins

Response rate100%

Recommended by83%of homeowners

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Mr. Handyman Metro East

4.6(

196

)

Serving Marissa, IL and surrounding areas

Approved

In business since 2000

Warranties offered

Small jobs welcome

"Bob came out and provided an estimate which included options for completing the work. Once the work was scheduled he arrived on time and courteous, as usual. New security light of our choosing was installed in our backyard and a GFI outlet were installed in the garage in under an hour. We have used Mr. Handyman Metro East for several projects at our home and continue to use them because of their professionalism, value and customer focus."

Response time1 day

Response rate100%

Recommended by95%of homeowners

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Tiger Plumbing, Heating, Air Conditioning, & Electrical Services

3.4(

353

)

Serving Marissa, IL and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"There wasn't a charge for the service because it was still under warranty."

149 neighbors recently requested a quote

Recommended by74%of homeowners

Serving Marissa, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"Vinc and his crew at VMK did and excellent job and I highly recommend there services ! Dave Caputo"

Response time2 days

Response rate90%

55 neighbors recently requested a quote

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J.W. Repair LLC

New to Angi

Serving Marissa, IL and surrounding areas

Approved

Hello, my name is James. I perform many handyman/repair services. I won’t charge near as much as large commercial businesses, and promise to be transparent and honest with my work. I’m positive if I can’t help you with your problem then I could point you in the right direction to help get your issue resolved asap quick as possible.

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CJ pro lawns

New to Angi

Serving Marissa, IL and surrounding areas

Approved

CJ Pro Lawns is your local expert for professional lawn care and pressure washing services. With a focus on reliability and meticulous attention to detail, we help homeowners keep their properties looking their absolute best year-round. From precision lawn maintenance to restoring your home’s surfaces with expert pressure washing, we pride ourselves on punctuality and high-quality results. Fully insured and dedicated to customer satisfaction, we treat every property as if it were our own.

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C-MAC Development, LLC

New to Angi

Serving Marissa, IL 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!

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Sparks Junk Removal and Hauling LLC

5.0(

)

Serving Marissa, IL and surrounding areas

Free estimates

"Denise is very dedicated to her clients and does great work. We have used her to clean out two vacant properties we purchased. Very thorough."

+15

Recommended by100%of homeowners

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Showing 1-10 of 144

Heating and Air Conditioning questions, answered by experts

Yes. Return air vents are responsible for gathering and pulling in the warmer air. Once they draw it in, your system conditions the air by removing the warmer molecules from it, allowing your air conditioner to dispense the cooler air back into your home. Not only does this create a more comfortable environment for you, but it also keeps your air conditioner from overworking, resulting in lower energy bills.

Running an air conditioner with mold is not safe because it can spread harmful mold spores throughout your home. Exposure to these spores can trigger various health problems, including respiratory issues, allergies, coughing, wheezing, sneezing, itchy eyes, and a sore throat. It may also aggravate asthma in household members. Continued exposure can increase the risk of more serious illnesses like sinus infections, pneumonia, and bronchitis. If you suspect mold in your air conditioner, you should stop using the system until it has been properly cleaned to avoid health risks and further contamination.

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

Air conditioners can stop working in the middle of the night for many reasons. Your local power grid might shut down late at night. Power surges can also trip your breakers if too much power is being used in the area at the time. If your AC is connected to a digital thermostat, it gets naturally cooler at night, so the outdoor temperature might dip below the automated setting to turn the cooling system off.

The Marissa, 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.

See all articles

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Is it time for a new cooling system for your home? Check out this guide to get a head-to-head comparison of heat pump vs. air conditioner systems.