Lennox Packaged Units
Lennox packaged units offer innovative technology, superior energy efficiency, and quiet operation with comprehensive control options for commercial and light commercial applications.
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Popular Models
Technical Specifications
Capacity & Efficiency
Airflow & Pressure
Dimensions
Power Requirements
Common Issues & Solutions
Supply fan motor failure
Symptoms:
No airflow, motor overheating, breaker trips, unusual noises, belt damage (on belt-drive models)
Solution:
Check motor windings and bearings, verify proper voltage, inspect belt condition and tension on applicable models, confirm capacitor operation, replace motor with OEM equivalent considering HP, RPM, and frame size requirements.
Control board communication problems
Symptoms:
Error codes, components not responding, erratic operation, thermostat communication issues
Solution:
Inspect communication wiring for damage or interference, verify proper network addressing, check for moisture damage on boards, test communication voltages, upgrade firmware if available, replace control board if troubleshooting indicates failure.
Refrigerant circuit restrictions
Symptoms:
High superheat, starved evaporator, high compression ratio, frost patterns before restriction
Solution:
Check filter-drier condition, inspect TXV for blockage, verify proper refrigerant distribution, monitor temperatures across suspected restriction points, recover refrigerant and replace restricted components.
Cost Information
| Service | Average Cost | Cost Factors |
|---|---|---|
| Quarterly maintenance agreement | $1,200-$3,200 annually | Unit quantity and size, service scope, filter program inclusion, guaranteed response time |
| Commercial unit refrigerant leak repair | $800-$2,500 | Leak location, accessibility, refrigerant type (R-410A/R-466A), system complexity |
| High-efficiency package unit upgrade | $15,000-$80,000 | Capacity, efficiency level, curb adaptation, controls integration, existing infrastructure |
| Controls and zoning retrofit | $3,000-$12,000 | Control system complexity, number of zones, sensor package, commissioning requirements |
Frequently Asked Questions
What makes Lennox Energence rooftop units more efficient?
Lennox Energence units achieve up to 23.5 IEER efficiency through staged or variable-capacity compressors, MSAV (Multi-Stage Air Volume) supply fan technology, advanced Prodigy control system, high-efficiency condenser coils, and optional energy recovery modules that can reduce capacity requirements by 20-40%.
How do Lennox packaged units reduce installation and operational costs?
Lennox reduces costs through lightweight designs that minimize structural requirements, downflow/horizontal convertibility without additional parts, tool-free filter access, single-point electrical connection, BACnet/LonTalk/Modbus controls compatibility, and up to 50% fewer connection points than conventional RTUs.
What indoor air quality features are available on Lennox packaged units?
Lennox offers multiple IAQ options including double-sloped stainless drain pans, high-efficiency filtration up to MERV 16, UV germicidal lights, Humiditrol dehumidification systems, CO2-based demand control ventilation, modulating hot gas reheat, and robust economizer controls for optimal ventilation management.
How intelligent are Lennox Prodigy controls?
Lennox Prodigy 2.0 controls feature auto-configuration for fast setup, advanced diagnostic capabilities with 250+ fault codes and plain-text descriptions, USB connectivity for service, Building Automation System integration, remote monitoring capability, and customizable operational sequences for specific building requirements.
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