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

North South Heating and Cooling
New to Angi
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+1 more

Serving Princeton, IL and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

5 neighbors recently requested a quote
Avatar for Preferred Home Improvements
Preferred Home Improvements
4.7(
12
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Install - For Business+4 more

Serving Princeton, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Very good. This was our first time having this done so we didn't know what questions to ask to get a complete estimate. Because of this they added extra services to ensure we would be happy with their work. Very polite and clean. Would definitely hire them again."
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+30

Recommended by100%of homeowners
Avatar for Comfort Zone Heating & Cooling - Home  Facebook
Comfort Zone Heating & Cooling - Home Facebook
4.9(
7
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Princeton, IL and surrounding areas

In business since 2011

Free estimates

Emergency services offered

We pride ourselves on providing quality workmanship at affordable prices. Complete customer satisfaction is our number one goal. If you are not happy we will make it right. We strive to complete all work in a timely fashion and is done so with honesty and professionalism.

Bank installs
In floor heat
New 12 ton rooftop unit and all new ductwork
Gingerbread man
Return air duct

+10

Response time6 hrs
Recommended by100%of homeowners
Avatar for Sears Heating and Cooling - Chicago South
Sears Heating and Cooling - Chicago South
3.8(
28
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Princeton, IL and surrounding areas

In business since 1893

Free estimates

Warranties offered

"First men that came were HEAVY on the sales. Seemed like used car sales. And low on the understanding the options. We had to make a selection before they'd show us any price. LONG interview with little to show for it. Very stuck on getting you to decide there and then. On the second visit the man was much more forth right and helpful. Still didn't go with Sears because we couldn't trust them for the overall value (seem to have a large over head) or who does the work (and a negative taste with 'sales')."
A/C Diagram
Carrier Air Filters
Kenmore unit
Carrier furnace
Recommended by82%of homeowners
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Air Conditioning FAQs, answered by experts

The cost to add Freon to an AC ranges from $100 to $350. It can increase up to $600 for large AC units requiring much more coolant. The cost also depends on how much refrigerant your unit needs. If only a small amount of Freon leaked out, your cost would be on the lower side. A complete replacement of all the required refrigerant can get expensive.

Yes. In fact, not only are AC tuneups worth it, but they’re actually necessary to keep your air conditioner in good condition, improve its efficiency, and potentially prevent major damage. Experts recommend getting a tuneup at least once per year. In most cases, you’ll want to schedule it during the spring so that you can address any issues before the hottest months of the year.

Swamp coolers cost approximately 50 percent less to install than central air conditioners and cost less to run. Operation costs depend on the size of the unit and home, your climate, utility rates in your area, and the system’s efficiency. Swamp coolers use 15 to 35 percent less power than air conditioners.

The $5,000 rule for HVAC systems helps homeowners decide whether to repair or replace an AC or furnace. Take the quote for the HVAC repair cost and multiply that by the age of the HVAC system. If the total is higher than $5,000, it’s more cost-effective to replace the system. If the total is lower than $5,000, consider repairing the system.

Many HVAC manufacturers provide warranties that encompass the cost of a new compressor, with durations ranging from 5 to 10 years, depending on the brand. These warranties cover critical components such as the compressor, condenser, connecting tubing, evaporator, and refrigerant charge. Moreover, they often include the necessary labor for replacement or repairs. Keep in mind that premium-brand compressors may offer lifetime warranty options. It's essential to note that these warranties rarely cover labor costs.

The Princeton, IL homeowners’ guide to air conditioning services

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