Carrier Packaged Units
Carrier packaged units provide complete heating and cooling solutions with innovative technology, versatile installation options, and industry-leading reliability for commercial and light commercial applications.
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Popular Models
Technical Specifications
Capacity & Efficiency
Airflow & Pressure
Dimensions
Power Requirements
Common Issues & Solutions
Condenser coil leaks
Symptoms:
Reduced cooling capacity, frost patterns on evaporator, high superheat, low subcooling
Solution:
Locate leak with electronic detector or dye, assess coil condition for repair feasibility, repair small leaks with appropriate brazing/sealing methods, replace coil section if extensive damage exists, properly evacuate and recharge system.
Gas valve problems
Symptoms:
No heat, insufficient heat, delayed ignition, short cycling on limit, unusual combustion noise
Solution:
Check gas valve operation including proper voltage to valve, verify gas pressure (inlet and manifold), inspect valve body for damage, test safety circuit operation, replace valve assembly if internal failure is confirmed.
Economizer controller failure
Symptoms:
Improper damper position, excess outdoor air, humidity control issues, high energy consumption
Solution:
Verify controller power supply, check actuator operation and feedback signal, test sensor inputs, recalibrate or replace controller, ensure proper dry-bulb or enthalpy setpoints, update firmware if available.
Cost Information
| Service | Average Cost | Cost Factors |
|---|---|---|
| Preventive maintenance | $500-$1,800 annually | Unit size, service frequency, filter types, inspection depth, predictive maintenance inclusion |
| Heat exchanger replacement | $3,000-$8,000 | Unit size, exchanger design, accessibility, downtime requirements, labor rates |
| Commercial packaged unit installation | $12,000-$70,000 | Tonnage, efficiency rating, installation complexity, crane requirements, ductwork modifications |
| Economizer repair/upgrade | $800-$3,500 | Component replacement needs, controller type, sensor package, energy code compliance upgrades |
Frequently Asked Questions
What energy efficiency features are included in Carrier's packaged rooftop units?
Carrier packaged units feature EcoBlue Technology with beltless direct-drive fans, multi-stage or variable-speed compressors, ECM motors, advanced economizers, microchannel condenser coils for improved heat transfer, and staged gas heating in select models. Premium units achieve up to 17 IEER and 21 IPLV efficiency ratings.
How do Carrier's WeatherExpert models improve efficiency?
WeatherExpert units incorporate staged or variable-speed compressors that adjust capacity to match building load, advanced refrigeration circuitry with electronic expansion valves, enhanced coil designs, intelligent defrost control for heat pump models, and Carrier's SystemVu controller that optimizes operation based on conditions.
What are the ventilation control options for Carrier packaged units?
Carrier offers several ventilation control options including standard economizers, Humidi-MiZer dehumidification system, Energy Recovery Ventilators (ERVs), CO2-based demand controlled ventilation, positive building pressure control, and field-configurable outdoor air settings to meet ASHRAE 62.1 requirements.
How are Carrier packaged units designed for easier service?
Carrier designs for serviceability with hinged access panels, slide-out filter racks, isolated compressor compartments, accessible control panels with non-fused disconnects, convenience outlets on larger models, color-coded wiring, tool-less filter access, and available Carrier SMART Service tool for advanced diagnostics.
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