PDM Group

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About PDM Group
PDM Group operates from a fully staffed service department at 1258 South River Rd. in Cranbury, NJ, delivering HVAC service and maintenance across the Tri-State Area. The company holds a perfect 5.0-star rating from 2 reviews, reflecting consistent customer satisfaction. Founded in 1935 through its founding company Hearnen Air Conditioning, one of the earliest factory distributorships established by Willis Carrier himself, PDM Group brings over eight decades of industry experience to every service call. The business maintains convenient hours from 8 AM to 8 PM, seven days a week, ensuring residents and businesses can access emergency heating and cooling support when needed.
What distinguishes PDM Group from typical residential HVAC contractors is its deep specialization in industrial and commercial applications. The company partners with GE Mechanical of Vineland, NJ, expanding their service coverage and adding plumbing capabilities including maintenance for onsite sewer lift stations and underground piping. Their engineering department handles design-build projects ranging from straightforward installations to complex air conditioning, heating, and piping systems. PDM Group services all major HVAC brands and specializes in niche equipment such as process chillers, cooling towers for the plastics industry, desiccant dehumidifiers for food and pharmaceutical production, humidification systems, and data center cooling solutions.
Since customer reviews are not available for this business, I cannot provide specific named technician stories or customer scenarios. The website emphasizes a company culture built on responding quickly to customer needs, delivering quality service, and producing positive results. Their service capabilities extend beyond conventional HVAC to include building automation systems and specialized process equipment that few contractors in the region can match.
Working Hours
| SundayToday | 8 AM–8 PM |
| Monday | 8 AM–8 PM |
| Tuesday | 8 AM–8 PM |
| Wednesday | 8 AM–8 PM |
| Thursday | 8 AM–8 PM |
| Friday | 8 AM–8 PM |
| Saturday | 8 AM–8 PM |