Business Details
27 Years
experience
Emergency
services
Your Trusted HVAC Partner in Mokena, IL
Founded in 1999, Allegiance Heating & Cooling has built a reputation as a trusted family-owned HVAC contractor serving Mokena and surrounding communities. Our team combines over 25 years of collective experience with factory-certified expertise as a Trane dealer, delivering heating, cooling, and indoor air quality solutions tailored to residential and commercial needs. We prioritize punctual service, transparent communication, and lifetime guarantees on parts and repairs, ensuring long-term client satisfaction.Our commitment to energy-efficient systems and personalized customer care has earned us consistent recognition through referrals and positive testimonials. By maintaining competitive pricing without compromising quality, we aim to be the preferred HVAC partner for Illinois residents seeking reliable comfort solutions.
Services
Heating Repair
AC Installation
Air Duct Cleaning
Heat Pumps
Ductless Systems
Commercial HVAC
Maintenance Plans
Water Filtration
Indoor Air Quality
Emergency Services
Details
- Year established: 1999
Highlights and features
- We offer 24/7 emergency HVAC services for urgent needs.
- Our team includes NATE-certified technicians with 25+ years of combined experience.
- We provide lifetime guarantees on all parts and repairs.
- We maintain competitive pricing without compromising quality standards.
- Our punctual service ensures minimal disruption to your schedule.
Associations and certifications
- Trane
What people say
Same-day emergency repairs
Professional technicians
Fair pricing
Lifetime guarantees
Timely installations
Services
Heating Repair
Our heating repair specialists address furnace, boiler, and heat pump issues with precision. Using advanced diagnostic tools, we identify and resolve problems affecting system efficiency and safety. Customers benefit from same-day emergency repairs and guaranteed workmanship, ensuring winter comfort without unexpected breakdowns.
AC Installation
We install high-efficiency air conditioning systems tailored to home size and climate needs. Our technicians handle central AC, ductless mini-splits, and hybrid systems with expert precision. Energy Star-rated equipment selections help reduce utility costs while maintaining optimal indoor comfort levels year-round.
Air Duct Cleaning
Professional air duct cleaning removes contaminants from HVAC systems using industrial-grade equipment. This service improves indoor air quality by eliminating dust, allergens, and mold buildup. Regular maintenance extends system lifespan and maintains manufacturer warranty compliance for residential and commercial clients.
Heat Pumps
We specialize in heat pump installation, repair, and maintenance for year-round temperature control. Our technicians optimize system performance through refrigerant checks, coil cleaning, and defrost cycle testing. Customers receive energy-saving recommendations for geothermal and air-source systems with lifetime warranty options.
Commercial HVAC
Our commercial HVAC services cover rooftop units, VRF systems, and industrial climate control solutions. Preventative maintenance plans reduce downtime while emergency repair teams respond within 2 hours. We implement energy audits to identify cost-saving opportunities for office buildings, retail spaces, and manufacturing facilities.
Questions
What HVAC services do you offer in Mokena?
We provide heating/AC repair, installation, and maintenance, plus ductless systems, commercial HVAC, water filtration, and 24/7 emergency services for residential and business clients.
Are financing options available for HVAC upgrades?
Yes, we offer financing programs with credit approval to help customers afford essential HVAC replacements and energy-efficient system upgrades.
Do you service all HVAC brands?
Our NATE-certified technicians service all major HVAC brands, including Trane, Carrier, Lennox, and Rheem, with factory-authorized parts and warranty compliance.
What areas do you serve?
We serve Mokena, Orland Park, Frankfort, Joliet, New Lenox, and surrounding Illinois communities for residential and commercial HVAC needs.
What emergency HVAC services are available?
Our 24/7 emergency service responds to critical heating/cooling failures with same-day repairs, prioritizing urgent residential and commercial needs during extreme weather.
How can I schedule HVAC maintenance?
Contact us via phone or website to schedule preventative maintenance. We offer customizable service plans with priority scheduling for system longevity and efficiency.
