Professional Air Conditioning Installation in Chicago and the Surrounding Suburbs
Looking for expert AC installation in Chicago, IL? Eco Temp HVAC has installed central air conditioning systems for thousands of Chicago-area homeowners since 2016. Our NATE-certified technicians handle every step — Manual J load calculation, equipment selection, Cook County permit filing, refrigerant line work, electrical, condensate drainage, system commissioning, and final inspection — across Chicago and the surrounding suburbs including Lemont, Palatine, St. Charles, Downers Grove, Bartlett, Kirkland, Palos Heights, Hinsdale, Naperville, and Oak Park. Call (224) 253-8131 for a free in-home AC installation estimate.

Frequently Asked Questions About AC Installation
Common questions Chicago-area homeowners ask about the air conditioner installation process — what's included in the cost, prep for installation day, permits, electrical and ductwork considerations, and our installation workmanship warranty.
An Eco Temp HVAC installation bid includes everything required to deliver a fully operational, code-compliant system:
- The new AC equipment — condenser, evaporator coil, refrigerant lines
- Removal and EPA-compliant disposal of your old equipment and refrigerant
- Labor for all installation work, typically 6-12 hours of skilled technician time
- Refrigerant line set and electrical whip — copper line set and wiring between indoor and outdoor units
- New thermostat installation if required (or wiring to your existing one)
- Condensate drain line and float switch to protect against water damage
- Cook County permits and required inspection coordination
- Outdoor unit pad or mounting hardware
- Refrigerant charging and system commissioning per manufacturer specifications
- Post-install testing of airflow, temperature differential, electrical draw, and refrigerant pressures
Costs vary based on what additional work is needed beyond a standard replacement — electrical upgrades, ductwork modifications, line set re-routing, or new pad pours add to the base price. Every Eco Temp HVAC quote is written and itemized so you can see exactly what's included.
Most homeowners don't need to do much, but a few simple steps help installation go faster and smoother:
- Clear a path from the front door to the indoor air handler (typically in the basement, utility closet, or attic) — about 36 inches of clearance
- Make sure the outdoor unit area is accessible — clear plants, lawn furniture, and debris within 5 feet of the existing condenser pad
- Plan for pets — installation involves opening exterior doors repeatedly and running power tools, so pets are best kept in a closed room
- Note any HOA rules — if you're in a community with restrictions on outdoor unit placement, share these with us at the estimate
- Plan to be home or have someone available — we'll need access to verify thermostat operation and walk you through the new system
Our techs arrive in marked vehicles and uniforms with full photo ID. We'll text you when we're 10-15 minutes out with a photo of your assigned technician.
Yes — removal and EPA-compliant disposal of your old AC is included in every installation. Old air conditioners contain refrigerant (typically R-22 or R-410A in existing Chicago-area homes), which is a federally regulated substance and cannot be disposed of through normal trash service.
Our EPA Section 608-certified technicians recover all refrigerant before removal, documenting the recovery for environmental compliance. The metal components are then recycled through certified scrap recyclers. You don't need to do anything — the old equipment leaves with us on installation day.
Yes. The City of Chicago and Cook County require mechanical permits for residential air conditioner installations, including like-for-like replacements. Permits ensure the installation meets current electrical and mechanical code, protects your homeowner's insurance coverage, and is on record if you sell the property later.
Eco Temp HVAC handles the entire permit process — we file the application, pay the fees (included in your installation cost), schedule the inspection, and coordinate with the inspector for sign-off. Most permits clear in 5-10 business days in Cook County. Suburban municipalities have their own permit processes, which we also handle.
Most modern Chicago homes (with 200-amp electrical service) easily support a new AC installation. Older homes with 100-amp service can usually handle a standard 2-3 ton AC but may need a panel upgrade if you're also adding electric heat, EV charging, or a larger system.
Every AC installation requires a dedicated 240V circuit with a properly sized breaker and an outdoor disconnect within sight of the condenser. During your estimate, we evaluate your electrical panel capacity, existing AC circuit, and disconnect to determine if any electrical work is needed. If a panel upgrade or new circuit is required, that scope is itemized separately on the written quote.
Most Chicago-area homes built after 1960 have ductwork that supports a properly sized AC with minimal modification. We evaluate four things during your estimate: total duct cross-section vs system requirements, leak rate, insulation condition, and return-air capacity. Common findings:
- Ductwork in good condition: No changes needed — most installations
- Minor sealing or insulation needed: Improves system efficiency 10-20%, usually $300-$800 added to the install
- Undersized returns: Adding return air capacity may be required for proper airflow with a new high-efficiency system
- Full duct replacement: Rarely needed except in homes with deteriorated, asbestos-wrapped, or improperly designed duct systems
For homes without ductwork — common in older Chicago condos, brick walk-ups, and finished basements — ductless mini split installation is typically the better option than retrofitting ducts.
Outdoor AC condensers are typically placed on a concrete pad or composite mounting block on the side or back of the home, within a reasonable distance of the indoor air handler to minimize refrigerant line length. Placement requirements:
- Minimum 24 inches of clearance on all sides for airflow and service access
- Level surface — pad must be level within 1/4 inch for proper compressor operation
- Not directly under windows when possible — to reduce indoor noise transmission
- Away from dryer vents which can deposit lint on condenser coils
- Within sight of the electrical disconnect for code compliance
- Compliant with HOA rules for visibility and screening if applicable
In most cases the new unit replaces the existing one in the same location. If your existing placement isn't ideal — too close to a bedroom window, in a flood-prone area, blocked by landscaping — we can discuss alternative locations during the estimate.
Spring (March-May) and fall (September-October) are the best times to install a new AC in the Chicago area. During these shoulder seasons:
- Scheduling is faster — typically 1 week from contract to install vs 2-3 weeks during summer peak
- Promotional pricing is often available from manufacturers and contractors
- Utility rebates from ComEd and Nicor Gas are sometimes more generous in off-peak months
- You're not stuck without cooling in 90-degree weather while waiting
- More flexible appointment times mean we can work around your schedule
That said, we install year-round — including emergency replacements during summer heat waves and winter installs for homes preparing for the coming summer. If your AC has completely failed, don't wait for shoulder season; an emergency installation can usually be completed within 3-5 business days.
Yes. Many Chicago homes — particularly brick bungalows, two-flats, and pre-war single-family homes built before forced-air heating was common — were never designed for central AC. We have two primary installation paths for these properties:
- High-velocity mini-duct systems (like Unico or SpacePak) that use small 2-inch flexible duct routed through wall cavities and ceilings — ideal when preserving historic finishes matters
- Ductless mini split systems with multiple indoor heads, each conditioning a specific zone — no ductwork required, fastest install, often the most cost-effective for retrofits
Both options work well for the older masonry homes common in neighborhoods like Logan Square, Lincoln Park, Wicker Park, and Bucktown. During your in-home estimate we evaluate which approach makes the most sense for your specific home and budget.
Yes. Eco Temp HVAC backs every installation with two layers of warranty protection:
- Manufacturer equipment warranty: 5-10 year parts warranty from the equipment manufacturer (Trane, Carrier, Bryant, Lennox, etc.) depending on brand and model
- Eco Temp installation workmanship warranty: Covers the labor and quality of our installation work — if any installation-related issue arises (refrigerant line connection, electrical, drainage, mounting), we fix it at no cost
This is in addition to our 100% Money-Back Guarantee on all services. If you're not satisfied with the installation, we make it right. We also handle all manufacturer warranty registration on your behalf at the time of install, so you don't have to keep paperwork or worry about missing the registration window that some manufacturers require for full warranty coverage.







