When your furnace fails on a freezing Mokena night, or your air conditioner gives out during a humid July heatwave, the person you call to fix it matters. Hiring an unvetted, unlicensed, or uninsured “handyman” for a system as complex and critical as your HVAC is a significant risk. It can lead to improper repairs, voided warranties, and even dangerous safety hazards. Your home and your family’s comfort are too important to leave to chance.
At Potocki Heating & Air Conditioning, we are proud to be the licensed HVAC contractors Mokena, IL homeowners trust. We are a professional, fully insured, and certified team dedicated to the highest standards of safety, quality, and accountability. Choosing us means choosing peace of mind. For service you can depend on, backed by the proper credentials, call our team at 815-693-5579 today.

The Critical Difference: Why “Licensed” Matters for Your Mokena Home
The term “licensed” isn’t just a marketing buzzword; it’s a critical qualification that provides tangible protections for you as a homeowner. When you hire licensed HVAC contractors, you are ensuring a level of professionalism and safety that uncertified individuals simply cannot offer.
1. Adherence to Illinois & Mokena Building Codes
Your HVAC system is directly connected to your home’s gas, electrical, and ventilation systems. An improper installation or repair can violate local Mokena and Illinois state building codes, leading to failed inspections, fines, and—in the worst cases—a risk of fire or carbon monoxide (CO) leaks. Licensed contractors are required to know and adhere to these codes, ensuring your system is installed safely and correctly.
2. We Are Fully Insured for Your Protection
What happens if a contractor is injured on your property? Or if their work accidentally causes a fire or water damage? If the contractor is unlicensed, you, the homeowner, could be held liable. Potocki Heating & Air Conditioning is fully insured, carrying both liability and worker’s compensation insurance. This protects you and your property from any and all unforeseen accidents, giving you complete peace of mind.
3. Preserving Your Manufacturer’s Warranty
This is a critical, often-overlooked point. Nearly all major HVAC manufacturers (like Trane, Lennox, Carrier, and others) state in their warranty terms that all repairs and installations must be performed by a licensed professional. Hiring an unlicensed person to install or even service your unit can void your parts warranty, potentially turning a free covered component into a thousand-dollar out-of-pocket expense.
4. Verified Expertise and Training
An HVAC license isn’t given; it’s earned. It requires passing comprehensive exams that test an individual’s knowledge of heating, cooling, and refrigeration systems. This verifies that your technician has the foundational expertise to accurately diagnose and properly repair your system, rather than just guessing. We invest in ongoing training to ensure our team is up-to-date on all modern technology, including high-efficiency systems and industry-leading certifications.
Potocki Heating & Air Conditioning: Your Vetted Mokena HVAC Partner
Choosing Potocki Heating & Air Conditioning means you never have to wonder if your technician is qualified. Our commitment to professionalism is at the core of everything we do, providing a level of service that un-licensed operators can’t match.
Total Accountability and Transparency
As licensed HVAC contractors, we are fully accountable for the work we perform. We provide clear, written estimates before any work begins. We stand behind our repairs and installations, and we operate from a permanent, local place of business. We are here to build a long-term relationship with you as our Mokena client, not just make a quick buck and disappear.
Comprehensive Services, All Fully Licensed
Our license and expertise cover every aspect of your home’s comfort system. We are your single, qualified source for all your heating and cooling needs.
- Expert Heating Repair & Installation: From urgent furnace repairs to new, high-efficiency system installations, our work is code-compliant and built to last.
- Professional Air Conditioning Services: We have the credentials and refrigerant certifications to legally and safely handle all AC repairs, from refrigerant leaks to compressor failures.
- Routine Maintenance: Our professional “clean and check” services are performed by technicians who know how to *truly* optimize your system for safety and efficiency.
Don’t risk your home’s most important system. For guaranteed professional service from a licensed HVAC contractor in Mokena, IL, call the trusted team at Potocki Heating & Air Conditioning. Schedule your service by calling 815-693-5579 or contacting us online.
Frequently Asked Questions About HVAC Licensing
How can I verify if an HVAC contractor is licensed in Illinois?
This is a smart question to ask. In Illinois, you can verify many professional licenses through the Illinois Department of Financial and Professional Regulation (IDFPR). Reputable contractors should also be able to provide you with their license number and proof of insurance upon request. If a contractor is hesitant to provide this, consider it a major red flag.
What are the risks of hiring an unlicensed HVAC contractor?
The primary risks are:
- Safety: Improperly installed furnaces or vents can lead to CO leaks, gas leaks, or fire hazards.
- Financial Liability: If they get injured or damage your home, you may be financially responsible as they likely lack proper insurance.
- Voided Warranties: You will almost certainly void your manufacturer’s warranty on expensive equipment.
- Poor Quality: The repair or installation may be incorrect, leading to repeated breakdowns and higher energy bills, as outlined by federal resources like the Federal Trade Commission.
Is “certified” the same as “licensed”?
Not exactly, but both are important. “Licensed” means the contractor has met the state’s minimum legal requirements to perform HVAC work. “Certified” often refers to a higher, optional level of training from a specific organization or manufacturer (like NATE, or as a Trane Comfort Specialist, etc.). The best contractors are both licensed by the state and hold advanced certifications to prove their expertise. At Potocki, we prioritize both.
When you need a professional you can truly trust, turn to the licensed HVAC contractors at Potocki Heating & Air Conditioning. Call us today at 815-693-5579 for safe, reliable, and expert service in Mokena, IL.