HVAC Contractor in Mokena, IL & The Surrounding Areas

Are you looking for a top-notch HVAC contractor in Mokena, IL? Allegiance Heating & Cooling offers high-quality heating and air conditioning in the Mokena area. Our strong word-of-mouth and referral leads speak volumes about the satisfaction our clients experience.

With a dedication to always delivering on our promises, we’ve become a reliable partner for all HVAC needs. Trust Allegiance Heating & Cooling for unparalleled service and a commitment to building lasting connections with our valued clientele.

Heating and Air Conditioning You Can Count On!

Rest assured, our team of highly trained technicians is ready to address any heating or cooling issues you may encounter.

Whether it’s for your home or business, count on us to deliver expert services tailored to meet your heating and air conditioning needs with both warmth and cost-effectiveness.


With a focus on cutting-edge technology, our heating and cooling solutions contribute to increased property value, providing a modern and efficient home.


Beyond mere comfort, our services offer protection and durability, underscoring our commitment to reliability. You can count on us for lasting peace of mind.


From furnaces to heat pumps and central AC systems, our speciality lies in providing efficient solutions that balance comfort as well as affordability.

Whether it’s for your home or business, count on us to deliver expert services tailored to meet your heating and air conditioning needs with both warmth and cost-effectiveness.

Efficient HVAC Contractor in Mokena

In Mokena, where temperatures can soar, our HVAC services become indispensable to beat the summer heat. Whether you’re in need of upgrading to a ductless HVAC system or need urgent HVAC repairs for your existing system, our skilled technicians are prepared to provide their expertise. We prioritize creating a cool and welcoming indoor space, offering a refreshing retreat from the soaring temperatures.

We deliver high-quality heating services to keep you warm during the cold winter months in Mokena. Our technicians possess extensive knowledge of various heating systems, and we provide quality equipment from trusted manufacturers such as Trane®. Your comfort and energy efficiency are our primary concerns, ensuring optimal performance from your heating system in Mokena.

In addition to providing expert repairs and quality system installation, we also have a range of HVAC services tailored to your needs. We offer a line of advanced indoor air quality solutions, and even HVAC maintenance plans to make keeping your home comfortable a stress-free experience. No matter what you need, our team has you covered.

About Us

Allegiance Heating & Cooling, your trusted Mokena HVAC contractor, is a family-owned and operated business deeply committed to customer satisfaction

Knowledge & Skill

With 25+ years of experience, we have earned the trust of countless Illinois residents.

Lifetime Guarantee

Unlike fleeting HVAC companies, we stand by our work for as long as you own your home.

Competitive Pricing

We offer quality and don’t compromise on our affordability, thanks to industry-best pricing.

Prompt Arrival

We know your time is valuable. That’s why we prioritize it with punctual and efficient service.

& Care

Our technicians uphold professionalism and treat your home as if it were their own.

Trust Allegiance Heating & Cooling for your HVAC needs. Contact us today for a free in-home estimate and experience exceptional service from a team dedicated to your comfort.

Learn More

You're gonna love the Allegiance difference

Mokena's Best HVAC Contractor

Mokena’s Best HVAC Contractor

We proudly hold the prestigious certification as a Trane® dealer. This certification signifies our commitment to excellence and quality in providing heating, ventilation, and air conditioning solutions.

With over three generations of expertise in the HVAC business, our experience serves as a testament to our longstanding commitment to delivering reliable and top-tier heating and cooling services. When you choose us, you’re choosing a trusted partner with a legacy of excellence in the industry. Rest assured, when you choose us, you’ll experience unmatched service and steadfast dedication.

Home and business owners across Illinois trust our team as their go-to HVAC contractor choice. You can count on Allegiance Heating & Cooling for heating and cooling in Mokena and the surrounding areas!

Our Reviews

Excellent and professional workmanship. Fair pricing, knowledgeable staff, and timely installation. I would highly recommend their service to anyone that needs HVAC work.

James K.

Allegiance installed two new ac units at my home last year and I just had them out for a cleaning this past week. Always dependable, on time, friendly and accommodating. Would not hesitate to recommend them for a new install or a just service call.

Michael M.

Contact Allegiance Today