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When the hot and humid Chicago summer hits, a reliable air conditioning system becomes a necessity. Whether you’re installing central air for the first time or replacing an outdated unit, understanding the process of AC installation in Chicago can help you prepare for a smooth and efficient experience. From precise load calculations to final performance tests, professional HVAC contractors follow a well-defined process to ensure your new system operates at peak efficiency for years to come.
Before any tools are lifted or units are delivered, your HVAC contractor will start with a thorough evaluation of your home. This crucial step ensures your system is properly sized, customized for your home’s specific needs, and compliant with local Chicago building codes and energy efficiency standards.
The first task during the assessment is performing a Manual J Load Calculation. This industry-standard method determines the exact cooling capacity your home requires. Contractors will examine:
This meticulous calculation prevents a common mistake: installing a unit that’s either too big or too small. An oversized system may cool the air too quickly without properly dehumidifying it, leading to clammy indoor air. An undersized system, on the other hand, will overwork itself and may never reach the desired temperature, raising energy bills and reducing equipment lifespan.
Once the load is calculated, the right unit—measured in tons—is selected. This ensures maximum comfort, efficiency, and longevity.
If your home has existing ductwork, it will be inspected thoroughly. Even the best air conditioning unit will underperform if ductwork is leaky or poorly insulated.
Professionals will:
Ductwork can be a hidden culprit behind inefficient cooling in older Chicago homes, especially. Sealing and insulating the ducts ensures that cool air reaches its destination without escaping into unconditioned areas, saving money on energy bills.
After the pre-installation work is completed, your HVAC contractor will schedule an installation day. The process typically takes 4 to 8 hours for straightforward replacements and up to 2 days for more complex systems or first-time installations.
Here’s what happens next.
The team will arrive with your new condenser, air handler or furnace coil, refrigerant lines, thermostat, and any other necessary components. To protect your home, floors and nearby furniture will be covered.
Technicians will:
Outdoor condenser pads may also be replaced or re-leveled to ensure stability and vibration control.
For split systems, the installation is a two-part process:
The two components are connected by refrigerant lines, which carry coolant between the evaporator and condenser coils.
Technicians will carefully braze copper tubing, install a condensate drain, and connect high-voltage wiring—all while following manufacturer specifications and safety protocols.
Once the core components are installed, the new thermostat is mounted and wired. Whether it’s a basic programmable model or a modern smart thermostat, it must be configured to communicate with your system correctly.
Thermostat Calibration is a critical part of the process. Technicians will:
The system is then charged with refrigerant, and technicians will run a system test. They will:
This phase ends only when the technician confirms the unit is cooling effectively and operating within manufacturer and EPA specifications.
A quality contractor doesn’t just leave after turning the system on. Reputable AC installation companies in Chicago will perform post-installation checks to ensure your system meets safety, efficiency, and comfort standards.
Once the new system is up and running, it’s time for a final inspection:
System balancing may include adjusting dampers and fan speeds to distribute air evenly throughout the home. In multi-story buildings or vintage homes, where ductwork can be inconsistent, this step ensures all zones are cooled properly.
Your technician should walk you through how to use and maintain your new system. This includes:
Some companies also offer maintenance plans, which include seasonal tune-ups, priority service, and discounts on future repairs. These can help extend the life of your AC system and keep your warranty intact.
Most AC manufacturers require new systems to be registered within 30 to 60 days to activate full warranty coverage. Your contractor should handle this or guide you through it.
Make sure to collect:
Store this information in a safe place—it will be invaluable for future service or if you decide to sell your home.
To help your installation day go as smoothly as possible, here are a few things you can do to prepare:
AC installation in Chicago requires more than just swapping out equipment—it’s a process that demands precision, customization, and an understanding of local building conditions. That’s where Right Away Plumbing comes in.
At Right Away Plumbing, we don’t just install air conditioners. We offer comprehensive plumbing and HVAC solutions for homeowners throughout the greater Chicago area. Whether you need help with AC installation, sump pump repairs, or a new toilet, our team brings the professionalism, detail orientation, and experience you deserve.
Why Choose Right Away Plumbing?
From the moment we walk into your home, our goal is to provide personalized service with zero stress. We handle the small details—so you don’t have to.
Need to upgrade your cooling system before the next Chicago heatwave hits? Or maybe your current unit is making odd noises or struggling to keep up? Call us today and schedule your AC installation with confidence.
