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Best air conditioning pros near Knox, IN

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Top-Rated Air conditioning pros in Knox - Updated Nov 2026

Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+3 more

Serving Knox, IN and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"We had a great experience with Four Seasons Heating & Air Conditioning during our recent replacement of our furnace and AC unit. They were very professional and completed the job on time and answered all of my questions. Would recommend them for our Heating, Air Conditioning, Plumbing and Electrical needs."
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for SAS Heating & A/C Service
SAS Heating & A/C Service
4.6(
75
)
Central A/C - Service or Repair

Serving Knox, IN and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"AC went out on 4th of July and they were very accommodating and came that day. I had lots of questions since my AC unit was over 40 yrs old. I replaced the whole unit upon their recommendation. They were very helpful and knowledgeable throughout the whole process and kept me informed as the job was getting done."
Work
Work
Work
Response time3 hrs
Recommended by97%of homeowners
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+3 more

Serving Knox, IN and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

We are family owned and operated. We service all brands, makes and models. From furnace and water heater repair and replacements, all the way to a leaking kitchen faucet or bathroom toilet. One call REALLY does it all. Faucets, toilets, sinks, drain rodding, water heaters, boilers, furnaces, air conditioners and humidifiers. New construction to radiant heat. You know you called the pros the first time. Licensed, bonded and insured, we offer easy approval and affordable financing as well!

17 neighbors recently requested a quote
Recommended by100%of homeowners
PD Duct Cleaning LLC
4.9(
9
)
Air Ducts & Vents - Clean

Serving Knox, IN and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Call us today!

Recommended by66%of homeowners
Avatar for PD Duct Cleaning LLC
PD Duct Cleaning LLC
4.9(
9
)
Air Ducts & Vents - Clean

Serving Knox, IN and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Call us today!

Response time7 hrs
Response rate91%
24 neighbors recently requested a quote
Avatar for David Solutions LLC
David Solutions LLC
5.0(
2
)
Central A/C - Install

Serving Knox, IN and surrounding areas

Approved

In business since 2024

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. Call us today!

Response time4 hrs
Response rate95%
Avatar for Michiana Duct Cleaning
Michiana Duct Cleaning
5.0(
1
)
Air Ducts & Vents - Clean

Serving Knox, IN and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

Established in 2004, Michiana Duct Cleaning started with 1 owner and 1 truck, since we have expanded to 3 trucks and have become a family, veteran owned and operated local business. Marc and Nick (father and son duo) take pride in offering services that go beyond removing dust and debris. The services we offer help improve your quality of life inside your home. Our team utilizes state of the art equipment and techniques to thoroughly clean your air ducts and dryer vents, ensuring optimal performance and reducing the potential of fire hazards. Give us a call today to schedule your inspection and cleaning.

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Recommended by100%of homeowners
Tough touch cleaning
New to Angi
Air Ducts & Vents - Clean

Serving Knox, IN and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Here's your letter, ready to post:\n\n---\n\n**Professional Cleaning Services — Commercial & Residential**\n\nHello,\n\nI'm Chantana, and I've been providing professional cleaning services for over 15 years. If you need a cleaner you can count on, I'd love to earn your business.\n\n**Services include:**\n- Regular residential cleaning (weekly, bi-weekly, monthly)\n- Deep cleans\n- Move-in / move-out cleaning\n- Office and commercial space cleaning\n\nI'm dependable, thorough, and I treat every home and business like it's my own. Fair pricing, flexible scheduling, and free estimates.\n\n**Call or text me anytime: 5747425998**\n\nThank you for considering me — I look forward to working with you.

Anne’s Cleaning Service
New to Angi
Air Ducts & Vents - Clean

Serving Knox, IN and surrounding areas

Approved

I love the details, so you can love your space. At Anne’s Cleaning Company, I don’t just tidy up—I bring a passion for precision to every single corner of your home or office. I find true joy in transforming cluttered spaces into pristine sanctuaries, obsessing over the tiny details that others easily miss. From the top of the crown molding to the deepest corners of your baseboards, I treat your property with the microscopic care it deserves. I stand firmly behind the quality of my work, which is why my services come with a strict satisfaction guarantee. If it isn't absolutely perfect, I will make it right, because I believe you deserve nothing less than a flawless clean.

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Air Conditioning FAQs, answered by experts

Your central A/C unit should be professionally serviced and inspected at least once a year to ensure it operates properly and efficiently. This is best done before the peak cooling season. A full-service inspection by a qualified pro will typically include checking safety components for issues like carbon monoxide leaks, verifying cooling components and coolant levels, and inspecting electrical parts like fuses and wiring. Regular servicing enhances efficiency, mitigates potential problems, and maintains optimal performance. Because AC systems contain hazardous refrigerant, professional handling is essential.

While it is possible to add Freon to your AC unit yourself, it is not recommended. In fact, the U.S. Environmental Protection Agency (EPA) prohibits the handling of Freon without a license. Freon is a dangerous gas that can cause irreversible damage to your AC or yourself if not installed correctly. It is worthwhile to hire a professional to add Freon to your AC.

Dry mode positively impacts indoor air quality by reducing excess moisture, which stops the growth of mold and mildew. By maintaining optimal humidity levels, dry mode creates a less hospitable environment for allergens and airborne pathogens, improving overall air quality. However, it's essential to ensure proper ventilation to prevent stale air accumulation.

Water buildup in your HVAC system is a cause for alarm. If water accumulates in your ductwork, it can drastically lower your home's air quality and create safety hazards. These risks include mold growth, damage to your HVAC system, and attracting pests that are seeking water into your ducts. Proper insulation and sealing of ducts can prevent this, and regular inspection and maintenance can address water damage problems before they become too severe.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

The Knox, IN homeowners’ guide to air conditioning services

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