National HVAC Service was founded in 1991 as a provider of heating, air conditioning and mechanical services, primarily in the commercial, industrial and institutional market sectors. 

It is a privately held HVAC services company and part of the Service Logic family, with corporate headquarters in Nashville, Tennessee.

National HVAC Service provides a wide range of offerings to its customers from guaranteed maintenance agreements to complete system installations. We are committed to providing services in a most responsive and highly competent manner, while maintaining open communication with customers. Through this approach and a company-wide attitude of meeting or exceeding customers’ expectations, National HVAC Service continues to prosper.

Over the years, we have expanded operations into more than seven locations throughout the U.S., including Delaware, Tennessee, Massachusetts and Arkansas. All branch locations benefit from shared systems, resources, programs and cross support from our parent company Service Logic. 

As an established organization with a proven performance record, National HVAC Service is presently positioned better than ever to provide professional services, programs and solutions to its increasing customer base.

Investment Protection Agreement

When you select our Investment Protection Agreement, you get peace of mind knowing that, for a fixed fee, we take responsibility for all maintainable components of your system. The Investment Protection Agreement includes the following services:

  • Test and Inspection: On a regularly scheduled basis, we inspect system components in an effort to detect potential problems. We also focus on recommended operating parameters in accordance with the design and specifications of the equipment manufacturer. 

  • Preventive Maintenance: In accordance with the computerized maintenance tasking, we clean, adjust, lubricate and calibrate all equipment and components. An operational analysis and efficiency testing procedure is performed to document the condition and operating efficiency of the system. 

  • Repair and Replacement: As required, we repair and replace worn, failed, or questionable system parts and components. 

  • Emergency Service: Our preventive maintenance programs have demonstrated a dramatic reduction in emergency calls and breakdowns; however, if there is such an occurrence, the Investment Protection Agreement provides 24-hour emergency service at no additional cost. 

Energy Efficiency

Our energy sustainability programs are custom tailored to each client's individual needs and circumstances with a view toward long-term customer relationships based on mutual trust and satisfaction. 

Client Focused

Every National HVAC Service client receives individual attention, not a boilerplate service plan. While we've grown over the years and can now rely on the national resources of Service Logic, we haven't forgotten that our success is based on our deep local relationships and one-on-one interaction with our clients.

Team Driven

We're proud of the customer-centric team we've built over the years, made up of some of the most talented engineers, HVAC technicians and sales professionals in the mechanical services industry. In fact, most of our clients are long-term satisfied repeat customers because they trust our team to consistently be of service.

All team members are regularly trained on the latest technical and energy knowledge through our unique, industry-leading training program administered by Service Logic. Both our veterans and brand new hires are guaranteed to be professional and knowledgeable.

Technologically Sound

Our commitment to providing clients with world class HVAC solutions requires an investment in outstanding business systems. National HVAC Service has invested in a state-of-the-art service dispatch center and a customized tracking and tasking system. VoIP, Data, Accounting and CRM tools are integrated to deliver the consistent, high-quality service our customer base has grown to expect.