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Q: Can a 10,000-watt generator run a central AC unit?

• <div><p>A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.</p></div>

Q: Is it OK for my AC to run all day?

• <div><p>If you have central air conditioning, it&rsquo;s fine to <a href="https://www.angi.com/articles/how-long-ac-can-run-continuously.htm">run your AC all day</a> if that&rsquo;s what you want&mdash;as long as the AC unit is in good condition. But if your AC runs constantly when you don&rsquo;t want it to, there may be a problem with your system (like the ones we&rsquo;ve mentioned above). Window AC units and wall air conditioners aren&rsquo;t as powerful as central AC, so you should only run those kinds of air conditioners for eight to 12 hours at a time. </p></div>

Q: Is it bad if my evaporator coils and condenser coils don’t match?

• <div><p>Yes, having mismatched evaporator and condenser coils in your AC system can lead to serious issues. For instance, it can result in higher monthly energy costs as the system runs longer to compensate for the mismatch. This mismatch can also put extra stress on the system, compromising its efficiency and longevity. </p><p>Along with that, mismatched coils can lead to higher temperatures and humidity levels in the home. What&rsquo;s more, using coils of different sizes may violate the manufacturer's warranty, as they are designed to work synergistically, and any mismatch could lead to repairs and system failure.</p></div>

Q: How do I know what size AC filter I need?

• <div><p>Look up your model number online to find additional information. Usually, you can just take a look at the old filter and find the brand name and dimensions to order a new one. When replacing the filter, always check that it&rsquo;s pointed the right way to match the direction of your airflow. Many filters have arrows on them to help with this step.</p></div>

Q: How much does it cost to replace an AC unit?

• <div><p>The cost to replace an AC unit averages around $5,900, with a typical range between $3,900 and $8,020. The final price depends on several factors, including the type and size of the air conditioner, its efficiency rating, your geographic region, and labor costs for installation. Smaller units like portable and window ACs are much less expensive, costing between $90 and $550, compared to central or ductless systems. If your current unit is less than 10 years old, repairing it may be more cost-effective than a full replacement.</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

"Excellent job thank you. Will use them again for certain."

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%

517 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

"My furnace was not working & the repairman came out on a Sunday morning & made repairs to keep my home warm until he could get necessary parts on Monday."

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

Serving Marissa, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"He came very quickly, did a great job. Very professional. Also he let me know I did not need my dryer vent---which I appreciated very much!"

Response time7 hrs

Response rate99%

32 neighbors recently requested a quote

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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."

159 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%

65 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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Showing 1-10 of 142

Heating and Air Conditioning questions, answered by experts

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

If you have central air conditioning, it’s fine to run your AC all day if that’s what you want—as long as the AC unit is in good condition. But if your AC runs constantly when you don’t want it to, there may be a problem with your system (like the ones we’ve mentioned above). Window AC units and wall air conditioners aren’t as powerful as central AC, so you should only run those kinds of air conditioners for eight to 12 hours at a time.

Yes, having mismatched evaporator and condenser coils in your AC system can lead to serious issues. For instance, it can result in higher monthly energy costs as the system runs longer to compensate for the mismatch. This mismatch can also put extra stress on the system, compromising its efficiency and longevity.

Along with that, mismatched coils can lead to higher temperatures and humidity levels in the home. What’s more, using coils of different sizes may violate the manufacturer's warranty, as they are designed to work synergistically, and any mismatch could lead to repairs and system failure.

Look up your model number online to find additional information. Usually, you can just take a look at the old filter and find the brand name and dimensions to order a new one. When replacing the filter, always check that it’s pointed the right way to match the direction of your airflow. Many filters have arrows on them to help with this step.

The cost to replace an AC unit averages around $5,900, with a typical range between $3,900 and $8,020. The final price depends on several factors, including the type and size of the air conditioner, its efficiency rating, your geographic region, and labor costs for installation. Smaller units like portable and window ACs are much less expensive, costing between $90 and $550, compared to central or ductless systems. If your current unit is less than 10 years old, repairing it may be more cost-effective than a full replacement.

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.

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