Business Details
50+ Years
experience
Emergency
services
Your Trusted HVAC & Refrigeration Partner in Warren, MI
Founded in 1968, Janssen Refrigeration has established itself as a trusted provider of comprehensive HVAC and refrigeration solutions for commercial and industrial clients. Our licensed and insured team specializes in repairing, installing, and maintaining all makes and models of refrigeration and HVAC equipment, with expertise in ammonia and Freon-based systems, ventilation, and building automation. We offer engineering design, turn-key projects, and 24/7 emergency services, supported by a fleet of fully equipped service vehicles. Our technicians are certified in Ammonia Emergency Response and CFC Recoveries, and we maintain affiliations with leading industry organizations to ensure the highest standards of quality.With decades of experience serving Michigan's automotive, food processing, and manufacturing sectors, we prioritize timely project completion, cost efficiency, and long-term client relationships. Our additional offerings include sheet metal fabrication, piping solutions, and flexible leasing programs through General Funding Corporation to meet diverse client needs.
Services
HVAC Installation
Refrigeration Repair
Building Automation
Sheet Metal Fabrication
Emergency Services
Piping Solutions
System Maintenance
Leasing Programs
Consulting Services
Industrial Ventilation
Details
- Year established: 1968
Highlights and features
- We offer 24/7 emergency HVAC and refrigeration services with fully equipped vehicles
- Our technicians hold Ammonia Emergency Response and CFC Recovery certifications
- We provide customized leasing options through General Funding Corporation
- 55+ years of specialized experience in commercial and industrial refrigeration systems
- Maintain affiliations with industry leaders like ASHRAE and IIAR for technical excellence
Services
HVAC Installation
We design and install complete HVAC systems for commercial and industrial facilities. Our experts handle DDC controls, VAV/CAV systems, and computer room air-conditioning. With 55 years of experience, we ensure energy-efficient solutions that meet ASHRAE standards and client specifications.
Refrigeration Repair
Our certified technicians repair ammonia and Freon-based refrigeration systems, ice makers, and ultra-low-temp cascade systems. We provide 24/7 emergency service with fully equipped vehicles to minimize downtime for food processing and cold storage facilities.
Building Automation
We implement DDC and pneumatic control systems for complete facility automation. Our solutions optimize HVAC performance, reduce energy consumption, and integrate with existing infrastructure for manufacturing plants and office complexes.
Sheet Metal Fabrication
Our in-house fabrication shop creates custom sheet metal components for ventilation and industrial systems. We provide precision-engineered solutions that meet specific project requirements, ensuring proper airflow and system efficiency.
Emergency Services
We offer round-the-clock emergency response for refrigeration and HVAC failures. Our Warren-based team arrives with fully stocked vehicles to quickly diagnose and repair critical systems, minimizing operational disruptions for industrial clients.
Questions
What types of refrigeration systems do you service?
We service ammonia and Freon-based systems, Niagara No-Frost units, ultra-low-temp cascade systems, and industrial ice makers for commercial and manufacturing clients.
Do you offer 24/7 emergency HVAC support?
Yes, we provide 24/7 emergency services with fully equipped vehicles to address urgent HVAC and refrigeration failures at any time.
What areas do you serve?
We serve the eastern half of Michigan, including Metro Detroit, Saginaw, Bay City, Flint, and Ypsilanti for commercial and industrial clients.
Can you help with building automation systems?
Yes, we design and implement DDC and pneumatic control systems for complete building automation, optimizing HVAC performance and energy efficiency.
Do you offer financing options?
Yes, we provide leasing programs through General Funding Corporation for equipment and materials with monthly payments and end-of-term ownership.
What certifications do your technicians hold?
Our technicians are certified in Ammonia Emergency Response and CFC Recoveries, with affiliations to Pipefitters Local 636 and industry organizations.
