Our Mission
At Merz Heating & Air Conditioning, our slogan "Do it once. Do it right." reflects our unwavering commitment to providing exceptional customer service, reliable repairs, and precise installations. Since 1935, we have been proudly serving Effingham, IL and the surrounding areas, ensuring the utmost comfort and efficiency in your home or business.
Who We Are
Our team consists of highly skilled and certified technicians, seasoned sales professionals, and friendly customer service representatives. We take pride in our collaborative approach to problem-solving, ensuring that each client receives personalized solutions tailored to their unique needs.
What We Offer
We provide a comprehensive range of services to cater to all your heating, cooling, and indoor air quality needs. This includes:
Residential Services
- Installation and repair of furnaces, air conditioners, heat pumps, boilers, and other comfort systems.
- Ductless systems and zoning solutions for increased efficiency.
- Indoor air quality assessments and solutions.
- Energy efficiency audits and consultations.
Commercial Services
- Design, build, and installation of comprehensive HVAC systems for new and existing buildings.
- Comprehensive service and maintenance plans for optimal performance and efficiency.
- Technical support and troubleshooting for all major equipment brands.
Our Expertise
Beyond technical proficiency, our team is equipped with extensive knowledge of various systems and technologies, including:
- Leading brands like Lennox and others.
- Cutting-edge energy-efficient equipment.
- Innovative smart home solutions.
Our Promise
At Merz Heating & Air Conditioning, we stand by our work and are committed to:
- Providing upfront and honest pricing.
- Offering flexible financing options.
- Responding promptly to emergency situations.
- Communicating clearly and efficiently every step of the way.
Join Us
If you share our vision of providing exceptional customer service and building lasting relationships, we encourage you to explore our careers page and learn about opportunities to join our team.

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