Gunn & Pegelow
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Claim This BusinessAbout Gunn & Pegelow
Gunn & Pegelow operates as a heating equipment supplier and manufacturer representative based in Libertyville, Illinois. Established in 1954, the company has maintained a perfect 5-star rating across 3 verified client reviews, reflecting consistent service excellence over seven decades of operation. The business serves the broader Chicago metropolitan area including Lake County and surrounding communities, while also extending operations into Wisconsin, Texas, Indiana, and Missouri. Their positioning as a manufacturer representative distinguishes them from typical HVAC contractors, focusing instead on equipment specification, selection, and ongoing support for design teams and installation professionals.
What separates Gunn & Pegelow from standard HVAC providers is their role as manufacturer representatives, acting as intermediaries between leading equipment makers and the contractors who install complete systems. This position grants access to specialized solutions including semi-custom and fully custom air handling units, dedicated outdoor air systems, and energy recovery ventilation configured for demanding environments. The company maintains partnerships across industrial, municipal, institutional, and commercial sectors, from laboratory containment and natatorium humidity control to data center cooling and restaurant ventilation. Their expertise spans the equipment lifecycle from initial specification through parts support and eventual replacement, offering continuity that independent installers often cannot match.
Client feedback emphasizes the team's technical knowledge and customized approach. Reviewer Erik Salo describes receiving solutions designed around specific project requirements rather than off-the-shelf equipment, praising the consultative process and product quality. While the available review volume remains limited, the feedback highlights the company's emphasis on understanding client needs before recommending equipment configurations.
What Customers Say
Based on available client feedback, ratings reflect a perfect 5-star average with 100% positive sentiment. The single detailed review emphasizes technical expertise, custom solution design, and quality products, suggesting strength in complex or non-standard HVAC challenges rather than routine maintenance work.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–4:30 PM |
| Tuesday | 8 AM–4:30 PM |
| Wednesday | 8 AM–4:30 PM |
| Thursday | 8 AM–4:30 PM |
| FridayToday | 8 AM–4:30 PM |
| Saturday | Closed |
Services
Equipment Specification & Selection
ConsultationMatching HVAC equipment to project requirements including system capacity, efficiency standards, and budget constraints for new construction and replacements.
Semi-Custom Air Handling Units
Pre-engineered units with configurable options for commercial applications requiring balanced performance without full custom fabrication timelines.
Fully Custom Air Handling
Bespoke equipment engineered for unique applications involving unusual space constraints, specialized ventilation rates, or non-standard operating conditions.
Dedicated Outdoor Air Systems
Ventilation equipment providing controlled fresh air deliverySeparate from conditioned space heating and cooling for indoor air quality compliance.
Humidification & Dehumidification
Moisture control systems addressing excess humidity in pools and grow facilities or maintaining required humidity levels in laboratories and residential spaces.
Energy Recovery Ventilation
Systems capturing exhaust energy to precondition incoming air, reducing heating and cooling loads in commercial buildings with high ventilation demands.