Air Conditioning Installation
Right-sized central AC installation for homes and businesses, done clean and done right.
Free Service Call With Repair
Fast & Efficient Service
Background-Checked Technicians
Fully Licensed & InsuredProfessional Air Conditioning Installation in Illinois
Replacing or adding central air is one of the most valuable upgrades you can make to your property. A+ HVAC and Refrigeration handles the entire installation — from a load-based sizing assessment to a clean, code-compliant install and final performance test.
As a family-owned company serving Illinois since 2015, we hold ourselves to a higher standard of care than the big national chains. We work on central air conditioners, heat pumps, and commercial cooling systems, and we take full responsibility for every job from the first phone call to the final test. That means honest, flat-rate pricing you approve up front, background-checked technicians who respect your property, and a full warranty on every repair we complete.
Whether you're a homeowner who needs comfort restored quickly or a business owner who can't afford downtime, our goal is the same: diagnose the real problem accurately, fix it right the first time, and leave your space clean. Most air conditioning installation jobs are completed the same day — and if a special-order part is required, we typically wrap up the very next day.
Signs You Need Air Conditioning Installation
Comfort problems rarely fix themselves, and small issues have a way of becoming expensive ones. If you notice any of the warning signs below, it's time to call our team at (312) 549-8885 before the problem gets worse:
- An AC that's more than 12–15 years old
- Frequent, costly repairs on an aging unit
- Rooms that never cool evenly
- A system using discontinued R-22 refrigerant
- Rising energy bills from a low-efficiency unit
How Our Air Conditioning Installation Works
Fast, transparent, and done right — here's exactly what to expect when you book with us.
Book online or call
Reserve online in under a minute, or call and we'll get you scheduled fast.
We diagnose the issue
A licensed, background-checked tech pinpoints the real root cause on site.
Approve a flat price
You get an upfront, flat repair price — labor and parts — before any work begins.
Fixed & warrantied
We finish most repairs the same day and back the work with a full warranty.
Common Causes We Diagnose and Fix
Accurate air conditioning installation starts with an honest diagnosis. Rather than guessing or upselling, our technicians test the system methodically to find the true root cause, then explain exactly what's wrong and what it will cost before any work begins. Some of the most common issues we resolve include:
- An undersized or oversized existing system
- Outdated, inefficient equipment
- Poor previous installation and ductwork
- Refrigerant that is being phased out
What's Included in Our Air Conditioning Installation
Every air conditioning installation visit follows the same methodical checklist, so nothing gets skipped because it wasn't the obvious symptom. Here's what the technician actually does on site:
- A load calculation based on your actual square footage, insulation, windows, and orientation — not a guess from the old unit's nameplate
- An honest assessment of whether the existing ductwork can carry the airflow the new system needs
- Equipment options at more than one efficiency tier, with the real payback math for each
- Full removal and responsible disposal of the old equipment and refrigerant
- A new line set or a documented reason the existing one is sound
- Commissioning: charge verified by weight, airflow measured, temperature split confirmed
Why Choose A+ HVAC and Refrigeration
Illinois homeowners and businesses have rated us 4.9 out of 5 across more than 1,282 Google reviews, and we've earned the Angi Super Service Award, Thumbtack Top Pro status, and BBB accreditation. That reputation is built one honest repair at a time.
Every technician on our team is fully licensed, insured, and background-checked. We charge a flat, upfront price per repair — never by the hour — and our diagnostic fee ($79 residential, $149 commercial) is waived in full when you proceed with the repair, which means with most repairs the service call is effectively free. Every job is backed by a full warranty: most replacement parts carry a 12-month warranty, and labor is warrantied 30+ days depending on the repair.
Just as important, we're a family-owned local business, not a faceless national chain. When you call us, you reach people who live and work in the communities we serve and who genuinely care about earning your trust. We show up when we say we will, communicate clearly at every step, and treat your home or business the way we'd want ours treated.
Fully licensed, insured, and background-checked technicians on every job.
A clear, upfront price per repair — never by the hour, and no hidden fees.
Most repairs are completed the same day, so you're comfortable again fast.
12-month parts and 30+ day labor warranty on every repair we complete.
What Air Conditioning Installation Costs
Installation is quoted per project after we've seen the space — anyone quoting central air over the phone is guessing. The quote covers equipment, labor, permits, disposal, and commissioning as one number, and it doesn't move unless you change the scope. We'll also tell you plainly when a repair still makes more sense than a replacement.
Because we price per repair rather than by the hour, you know the total cost before we begin and there's no incentive for anyone to work slowly. Our diagnostic fee is $79 residential and $149 commercial, waived in full when you authorize the work during the same visit.
Preventing the Next Repair
The single most common problem we inherit from other installers is an oversized system. An oversized AC short-cycles, never runs long enough to pull humidity out of the air, and leaves you with a house that's cold and clammy while the compressor wears out early. Correct sizing costs nothing extra and is the difference between a system that lasts 10 years and one that lasts 18.
When our technician finishes, we'll give you an honest read on the overall condition of the system and whether routine maintenance would save you money — no pressure and no upselling, just straight advice about what we saw.
How Urgent Is This?
Installations are planned work, and we'd rather do yours in the shoulder season than during a failure — but we understand that a dead compressor in August doesn't wait for a convenient date. If your system has failed outright, tell us, and we'll move as fast as equipment availability allows.
Book online in under a minute or call us at (312) 549-8885. We'll give you a realistic arrival window and keep you updated — and if your situation is urgent, say so when you book.
Serving Homes and Businesses Across Illinois
From our Des Plaines base we provide air conditioning installation throughout Illinois, including Des Plaines and the surrounding 10-mile area, Chicago, Park Ridge, Northbrook, Barrington, Naperville, Glendale Heights, Mount Prospect, Arlington Heights, and Wilmette. Whether it's a single-family home or a busy commercial kitchen, our team brings the same fast response, honest pricing, and fully-warrantied workmanship to every call.
Air Conditioning Installation — Frequently Asked Questions
How much does air conditioning installation cost?
We price per repair, not by the hour, so you approve a flat, upfront price before we start. Our diagnostic fee is $79 residential / $149 commercial and is waived in full when you proceed with the repair. Minimum labor is $199, with final pricing based on the complexity of the job.
How long does a central AC installation take?
A straight replacement using sound existing ductwork is normally a single day. Adding central air to a house that has never had it, or correcting undersized ductwork, takes longer — we'll give you a realistic schedule with the quote rather than after you've committed.
Do you offer same-day air conditioning installation?
Yes. The majority of our repairs are completed the same day as the service call. If a specialized, non-stock part is required, we typically finish the next day after it arrives.
Do you service window AC units or mini-splits?
Our air conditioning service covers central, ducted, and commercial systems only. We do not service window units or mini-split systems.
Is air conditioning installation backed by a warranty?
Absolutely. Every repair is backed by a full warranty — most replacement parts carry a 12-month warranty, and labor is warrantied 30+ days depending on the repair.
Need Air Conditioning Installation?
Book online in under a minute or call now — most repairs completed the same day, backed by a full warranty.