Short answer: Compare greenhouse equipment using an approved data sheet that states duty, capacity, operating point, efficiency, materials, electrical supply, controls, protection, dimensions, accessories, test basis, warranty and spare parts. Model names or maximum ratings alone do not show whether equipment is suitable for the system.
Define what the equipment must do before comparing brands. A fan needs airflow and pressure at the system condition. A pump needs flow and head for the selected water and piping. A motor needs supply, load and starting method. A controller needs sensors, outputs, sequence, alarms and communication requirements.
| Data item | Buyer check |
|---|---|
| Airflow | At what static pressure and test condition is it stated? |
| Motor | What voltage, phase, frequency, power, protection and efficiency apply? |
| Construction | What blade, frame, shutter, guard and corrosion materials are used? |
| Noise and vibration | What measurement basis and installation controls apply? |
| Accessories | Are shutters, guards, mounts, cables, starters and spare belts included? |
Compare pump curves at the required flow and head, not only maximum flow. Confirm fluid, temperature, materials, seal, motor, suction conditions and control method. For filters, compare filtration rating, design flow, pressure loss, cleaning method, backwash water and spare elements. Treatment equipment also needs feed-water analysis and reject or waste handling.
Confirm torque, travel, speed, duty cycle, limit switches, transmission, tube or rack compatibility, mounting and manual emergency operation. Check whether one drive serves multiple vents or screens and how wind or obstruction protection works. The structural designer should approve equipment support and reaction loads.
Review measured range, accuracy, calibration, environmental protection, cable length, location, replacement and communication. The control data sheet should list inputs, outputs, supported equipment, sequences, alarms, data storage, remote access and manual operation. Cloud or remote features need a connectivity and cybersecurity plan.
Confirm local voltage, phase, frequency, earthing, enclosure protection and electrical requirements. Record motor starting current and whether contactors, overloads, soft starters or variable-frequency drives are included. Electrical panels, field cables and local distribution boundaries should be shown in the quotation.
An equipment model may be unusable without valves, strainers, connectors, mounts, sensors, cables, controls or commissioning parts. Request a complete accessory list. Separate supplier equipment, site piping, local cables, civil bases, installation consumables and commissioning services.
Recommended commissioning spares and consumables
Critical parts whose failure stops irrigation or climate control
Routine filters, seals, belts, probes and lubricants
Local or international replacement lead time
Manuals, wiring diagrams and part numbers
Warranty process and service contact
Training and preventive-maintenance requirements
Record nameplates, models, quantities and electrical ratings before packing. Perform practical factory checks where agreed, while recognizing that full system performance often needs site installation, water, power and controls. Commission each zone, alarm and manual backup against the approved operating sequence.
No. Compare airflow at pressure, efficiency, construction, test basis, controls and accessories.
No. Select from the required operating flow and head using the pump curve and system conditions.
No. Range, calibration, location, environmental protection, communication and replacement also matter.
Base the list on criticality, operating hours, local availability, supplier lead time and maintenance plan.
Use the electrical planning guide, inspection checklist and spares and commissioning guide.
Send the required duty and competing equipment data sheets through the contact page for a comparison checklist.