About Us

At Great Lakes Supply Co. (GLSCO), we specialize in supplying high-quality appliances, standard and custom packaged HVAC systems, and energy management solutions to the Property Management, Hospitality, and Construction industries. Our extensive experience allows us to deliver tailored solutions that meet the unique demands of these sectors, providing everything from replacement appliances and HVAC systems for apartments and hotel guest rooms to custom solutions for renovation and construction projects.
GLSCO offers wholesale pricing on renovation and construction projects, along with professional project management services to ensure smooth, timely execution. Our team also provides expert installation services for both appliances and HVAC systems, ensuring efficient and effective setups for every project.
GLSCO offers flexible delivery options, both local and nationwide, to ensure that our clients receive their products in a timely and cost-effective manner. We also provide warranty support and replacement parts to drive long-term satisfaction and ensure reliability.
Whether you're looking for replacement appliances or HVAC systems, retrofit HVAC solutions, or products for odd-sized spaces, we have the expertise and inventory to meet your needs. At Great Lakes Supply Co., we are committed to delivering dependable solutions that keep your properties or projects running smoothly and efficiently.
The GLSCO Difference

Project Management
At Great Lakes Supply Co.(GLSCO), we understand that managing renovation and construction projects can be complex and demanding. Our comprehensive project management services are designed to streamline every phase of your project, ensuring timely completion, cost-efficiency, and high-quality results. From initial planning to final installation, our experienced team is here to guide and support you every step of the way.
Our Project Management Services Include:
- CONSULTATION & PLANNING
We begin by working closely with you to understand your project's scope, objectives, and budget. Our team provides expert consultation, helping you make informed decisions about appliances, HVAC systems, and energy management solutions that best meet your needs.
- SCHEDULING & COORDINATION
Efficient scheduling is critical for the success of any project. By coordinating with suppliers, installers, and logistics we create detailed timelines to ensure each phase is completed on time. Our team everything on track and handles any delays or challenges that may arise with proactive solutions.
- BUDGET MANAGEMENT
Our team works to ensure that your project stays within budget without compromising on quality. We provide clear cost estimates and closely monitor expenditures throughout the project, helping to manage costs and identify opportunities for savings.
- PROCURMENT & LOGISTICS
We oversee the procurement process, sourcing high-quality appliances, HVAC units, and energy management systems tailored to your specific project. Our team ensures that products are delivered on time and to the correct locations or units according to your production schedule, minimizing delays and disruptions.
- INSTALLATION & INTEGRATION
Once products are on-site, our team coordinates the seamless installation of appliances and HVAC systems. We work with trusted, insured installers who ensure that all equipment is set up properly and integrated with existing systems. Our team oversees the entire installation process to ensure everything is done to specifications. - QUALITY CONROL & INSPECTIONS
Our team addresses any issues promptly, ensuring high-quality performance in the finished project.
- ONGOING SUPPORT & MAINTENANCE
After project completion, we provide continuous support through warranty services, regular maintenance, and replacement parts as needed. Our commitment to customer satisfaction extends well beyond installation, offering you peace of mind knowing we’re here to support your systems for the long term.
- RETROFIT & CUSTOM SOLUTIONS
For projects that involve retrofitting existing spaces or custom solutions, we have the expertise to provide tailored systems. Whether it's replacing outdated HVAC units in apartments and hotels or sourcing appliances for unique spaces, our account managers work to deliver custom solutions that fit your specific requirements.
With our end-to-end project management services, you can rely on Great Lakes Supply Co. (GLSCO) to handle all aspects of your renovation or construction project. From initial planning and procurement to installation and ongoing support, our team ensures a smooth, efficient process that delivers the best possible results for your properties.

Replacement Services
At Great Lakes Supply Co. (GLSCO), we specialize in providing reliable and efficient appliance and packaged HVAC replacement services tailored to meet the specific needs of apartments, hotels, and residential properties. Whether you need to replace outdated appliances in guest rooms, upgrade HVAC systems, or retrofit existing units, we offer comprehensive solutions designed to ensure comfort, efficiency, and long-term performance.
Our Appliance and Packaged HVAC Replacement Services Include:
APPLIANCE REPLACEMENT
We understand that replacing appliances in apartments, hotels, and homes requires careful consideration of both functionality and space. Our team is equipped to help you select the right appliances for your needs, whether it’s for individual units, hotel guest rooms, or entire buildings. We provide replacement solutions for:
- Refrigerators, Dishwashers, Ranges, and Microwaves: Offering energy-efficient, reliable models in various sizes, we can help you replace outdated or inefficient units with modern alternatives that reduce operational costs and enhance tenant/guest satisfaction.
- Washers, and Dryer: We carry a wide selection of high-performance residential and commercial laundry appliances, providing replacements that are suited to your property's specific layout and usage demands.
- Odd-Sized Appliances: If you have specific size constraints, we offer retrofit solutions to ensure the appliance fits seamlessly into your space. Our team works with you to provide the best possible solution, even for hard-to-fit areas.
- Energy-Efficient Models: With a focus on energy conservation, we help you select appliances that not only perform well but also reduce your energy costs, aligning with sustainability goals and operational budgets.
PACKAGED HVAC REPLACEMENT
When it’s time to replace HVAC systems, Great Lakes Supply Co. (GLSCO) offers packaged units that are both efficient and cost-effective, providing all-in-one solutions for heating, cooling, and ventilation. Our HVAC replacement services are ideal for properties such as apartments, hotels, and multi-family residences. Our services include:
- Packaged HVAC Systems: We specialize in replacing old, inefficient HVAC units with new, high-performance packaged systems that provide seamless heating and cooling. These units are perfect for tight spaces and designed for maximum energy efficiency, ensuring your system is both effective and sustainable.
- Customized Systems for Specific Needs: Whether you need a system for individual apartments, guest rooms, or larger communal areas, we offer customized packaged HVAC systems tailored to your unique space. Our team ensures each system is optimized for energy efficiency and comfort.
- Energy Management Integration: When replacing HVAC systems, we can integrate advanced energy management features, helping you monitor and control energy usage more efficiently. This feature helps reduce utility costs while enhancing comfort for tenants or guests.
- Retrofit Solutions: For properties with older HVAC systems, we offer retrofit solutions to replace outdated units with modern, energy-efficient packaged systems. We ensure that the new system fits seamlessly with your existing infrastructure, minimizing downtime and disruption during installation.
- Replacement for Odd-Sized or Discontinued HVAC Units: If your property relies on discontinued HVAC systems or odd-sized units that are hard to replace, we provide specialized solutions to accommodate these needs. Our team sources custom units or adapts existing systems to fit the available space, ensuring your HVAC needs are met without compromising on performance.

Professional Installation Service
Professional Installation Service
Both appliance and HVAC system replacements require expert installation for optimal performance. Our team of insured installers ensure that every unit is professionally installed, tested, and calibrated. Whether it’s an appliance or a HVAC system, we handle all aspects of the installation to make sure everything works as intended.
- Seamless Integration: We ensure that your new appliances and HVAC systems integrate seamlessly into your existing setup, with minimal disruption to daily operations or tenant experiences.
- Quality Assurance: Our experienced technicians perform quality checks during installation, ensuring all units are installed to the highest standards. We check for proper functionality, system compatibility, and safety.
- Post-Installation Support: After installation, we offer a full range of support services, including system testing, user instructions, and troubleshooting, ensuring your appliances and HVAC units continue to operate at peak efficiency.

Warranty Support & Parts
Warranty Support & Parts
Replacement Parts: We provide high-quality replacement parts for a variety of appliances and HVAC systems, ensuring that you have access to the components you need to maintain peak performance. Whether it’s for a faulty part or routine wear and tear, we can supply the necessary replacements to restore your systems.
Quick and Efficient Service: Our team is committed to delivering replacement parts quickly and efficiently, minimizing downtime and disruptions to your property. We carry a wide selection of parts for common and hard-to-find appliance and HVAC models, making it easy to find the exact replacement needed.
Warranty Coverage for Parts: If the part you need is covered under warranty, we’ll ensure that you receive a replacement at no additional cost, giving you added confidence in your investment.
Emergency Support: In the event of an unexpected issue, our team is available for emergency support, ensuring rapid delivery of replacement parts to minimize disruption and keep your systems running smoothly.