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Top-Rated Window a/c unit service or relocation pros in Great Lakes - Updated Nov 2026

Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Window A/C Unit - Service or Relocate

Serving Great Lakes, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"The technician arrived within a half hour of our initial call. Although he did not have the part on hand he made a quick trip to their service center and returned immediately with what he needed. The technician was prompt, professional, and knowledgeable. I feel it's also worth mentioning that the technician is also a combat veteran who served multiple tours overseas and is in the process of becoming a licensed plumber. I think it says a lot about a company who hires veterans. I'll never call anyone but Regional Plumbing and Heating for the types of services they provide."
15 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cahill Heating, Cooling, Electric, Plumbing & Sewer
Cahill Heating, Cooling, Electric, Plumbing & Sewer
4.8(
33
)
Window A/C Unit - Service or Relocate

Serving Great Lakes, IL and surrounding areas

Approved

In business since 1973

Free estimates

Emergency services offered

"Cahill installed my new furnaces in a professional manner and the units work very well. The annual service is thorough and complete. I am confident that the units are well maintained and not just given a cursory service. Installation of the ducts was done quickly and professionally and their advice helped me make the right decisions. They showed up to perform the work at the agreed time and completed the work efficiently. I didn't have to allocate a block of hours during which they might show up -- as with most service companies. I'm very pleased with this company."
Furnace Installations
Heat Pump Installations
Furnace Installations
Additional Photos
Additional Photos

+7

Response time8 hrs
12 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Simple Fidelis Heating and Cooling
Simple Fidelis Heating and Cooling
New to Angi
Window A/C Unit - Service or Relocate

Serving Great Lakes, IL and surrounding areas

Approved

Warranties offered

Small jobs welcome

Offers commercial services

Semper Fidelis Services brings military-grade discipline to HVAC and plumbing. Founded on the principle of being "Always Faithful" our team offers 10+ years of technical experience, including an AAS in HVAC/R and Universal EPA certification. We specialize in high-quality, reliable residential and commercial services with a strict commitment at doing the job right the first time.

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FAQs for window a/c unit service or relocation projects in Great Lakes, IL

If your window air conditioner is relatively new or of high quality, repairing it can restore optimal performance and protect your investment. However, for older units or those with ongoing issues, it might be more cost-effective to replace the unit to ensure long-term efficiency and reliability. Consider the unit's age, the severity of the problem, repair costs versus replacement, and energy efficiency ratings when making your decision. If repairs cost more than half the price of a new unit, replacement is typically the better option.

Window air conditioners last eight to ten years on average. After this time, you may notice decreased efficiency and component wear. Replacing an older unit can improve energy savings and provide updated features like remote controls and better overall performance. With proper maintenance including regular filter cleaning, coil checks, and professional servicing, you can maximize your unit's lifespan.

If your portable AC isn't cooling, it might have a refrigerant leak or a circuit malfunction that's preventing it from working properly. It's best to contact a local air conditioner contractor to inspect and repair the unit. If your AC is older and repairs don't fix the issue, replacing it might be the most effective solution.

Removing a wall-mounted AC costs $55 to $75. Completing the removal yourself at the end of each summer season, being sure to do so according to proper guidelines, keeps you within this cost range. Should you require professional assistance for removal and disposal, if you can't move the unit yourself, expect an added fee of $25 to $50 to the overall cost.

The Great Lakes, IL homeowners’ guide to window a/c unit services or relocations

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