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Superior Service and Support Providing Lasting Comfort

Providing Lasting Comfort

With more than 20 years in the business, Lennox® National Account Services is the premier HVAC service provider for multi-location businesses. Our nationwide, self-performing network delivers world-class preventative maintenance, repairs, and replacement services that maximize your buildings' uptime and reduce overall spend. We are dedicated to providing the highest quality service at the lowest cost of ownership possible for our customers. 

SERVICES

Lennox experts solve problems and preserve your business climate.

Full Protection HVAC Offering
Full Protection HVAC Offering

Full Protection HVAC Offering

This program locks in your HVAC service expenses at an agreed-upon rate, eliminating any potential cost escalations and substantially reducing paperwork. And since it covers the repair and replacement of everything inside an HVAC unit, it also helps keep equipment performing optimally and lowers operational costs. No quotes, No P.O.s, No invoices. Service without the hassle.

Preventive Maintenance
Preventive Maintenance

Preventive Maintenance

Performed up to four times per year, our 33-point maintenance check covers all major system components and provides a comprehensive rating for your equipment. This allows you to make repairs before major expenses occur, extending the life of your equipment and helping control costs.

Equipment Operation Check and Guided Setup
Equipment Operation Check and Guided Setup

Equipment Operation Check and Guided Setup

To ensure each unit is working properly after it has been installed, we’ll perform a comprehensive 64-point check and take it through the basic and advanced guided setup process. Any defective components will be repaired, and a report for each unit will be provided to the installing contractor, general contractor, and owner.

Commissioning
Commissioning

Commissioning

Lennox’ carefully designed commissioning process helps ensure your system is running efficiently and reliably from the start. Our technicians will verify and document key functions, ensuring:

  • Correct equipment and options are installed and meet construction details

  • Lennox Startup procedures are performed and sequences of operations are performed

  • Devices, including remote sensors, are correctly calibrated

  • System alarms are active, operation is correct, and equipment safeties are functioning properly

Planned Replacement Program
Planned Replacement Program

Planned Replacement Program

At some point, it becomes more cost-effective to stop repairing older equipment and start investing in new equipment that delivers higher efficiencies along with potential rebates and tax credits. Our team can help you proactively replace old and aging equipment on your terms rather than waiting for an emergency.

Support

We have your business's back.

Dedicated Team
Dedicated Team

Dedicated Team

Think of our team as an extension of your construction or facilities department. With National Account Services, you can expect:

  • Review of all site-specific drawings for accuracy and compliance
  • Resolution of any discrepancies with the mechanical engineer and construction or architectural project manager
  • Preparation of quotes nationally, plus equipment and accessories ordering as per the national account specification
  • Coordination of equipment delivery exactly when you need it on site

Whether it’s scheduling, problem-solving, or approvals, these HVAC professionals are committed to delivering fast, reliable solutions and the very best Lennox experience possible.

Nationwide Coverage
Nationwide Coverage

Nationwide Coverage

Across the country, top retailers and restaurants trust the experience and expertise of Lennox service teams. Whether your business needs service, repairs, or replacements for 20 or 120 locations, NAS can help keep every HVAC system running smoothly. We're never too far away.

  • More than 750 factory-trained, self-performing technicians
  • 119 branches nationwide
  • Dedicated exclusively to national account customers
  • Fast, reliable HVAC service
  • Direct-to-customer Distribution
NATE – Certified Technicians
NATE – Certified Technicians

NATE – Certified Technicians

Lennox technicians earn the prestigious NATE (North American Technical Excellence) certification in their first year, demonstrating the most rigorous product knowledge and HVAC systems training to ensure the best service and support possible.