Frequently Asked Questions

Maci Mechanical serves Tinley Park, IL and neighboring communities in Cook and Will counties. For detailed service area boundaries, call (708) 341-2213.

Yes. We operate with appropriate licensing and carry insurance to protect customers and staff. We follow local codes and manufacturer installation requirements.

We accept major credit cards, checks, and may offer financing options for larger installations. Contact our office for payment details.

We prioritize emergency heating or cooling failures and aim for quick response times for local customers. Call (708) 341-2213 to request dispatch.

Annual service is recommended — once in spring for AC and once in fall for furnaces. Homes with high usage, pets, or allergies may benefit from semi-annual checks.

Typical maintenance includes filter inspection/replacement recommendations, coil cleaning, refrigerant checks, electrical testing, motor and blower inspection, thermostat calibration, and safety control checks.

Maintenance plans reduce emergency repairs, maintain efficiency, extend equipment life, and often include priority scheduling and discounts on parts and labor.

We evaluate system age, repair frequency and cost, efficiency, and your long-term plans. We provide an assessment and cost comparison to help you decide.

Residential replacements typically take one day. More complex jobs, like duct modifications or commercial installations, can take longer. We give estimated timelines with proposals.

Yes. We back labor with a service warranty. Warranty terms vary by job; we provide written warranty information with each project.

Duct cleaning frequency depends on household conditions (pets, smokers, renovation). We inspect ducts and recommend cleaning when significant dust, mold, or debris is present.

Regularly change filters, consider higher-rated filters where compatible, add UV lights for microbial control in certain applications, maintain humidity between 30–50%, and schedule duct cleaning as needed.

Yes. Proper insulation reduces heat transfer, lowering both heating and cooling loads. We evaluate attic R-values and recommend insulation levels that reduce energy use and improve comfort.

Choice depends on budget, expected longevity in the home, and how much you value reduced operating expenses. We provide comparative cost analyses for different efficiency levels.

Yes. Maci Mechanical is an authorized dealer for both Trane and Goodman, providing access to manufacturer-backed equipment and warranties.

Yes. We register equipment warranties with manufacturers after installation and explain coverage details and maintenance requirements.

Absolutely. For homes with gas furnaces or appliances, carbon monoxide detectors are essential. We test combustion systems and advise on detector placement.

Evacuate immediately, avoid using switches, and call your gas utility emergency number and our office for assistance. Do not re-enter until the area is declared safe.

Yes. We tailor commercial maintenance plans to equipment type and usage. These plans include scheduled maintenance visits and priority emergency service.

Yes. We work with building automation systems and can install controls, scheduling, and remote monitoring to improve energy management.

Call (708) 341-2213 to schedule a service appointment. Provide your address and a brief description of the issue so our dispatch team can assign the right technician.

Provide safe access to equipment, clear surrounding areas, and notify us of pets or access constraints. For installations, we advise on access requirements and site prep.

First, check thermostat settings and circuit breakers; if there’s no obvious fix, call (708) 341-2213 for emergency dispatch. We prioritize heating emergencies and will attempt to restore service quickly.

Running the system with known failures can cause further damage. Call (708) 341-2213 for diagnosis. We can often provide temporary measures until a full repair or replacement can be scheduled.