| Condensate Removal Pump | Removes water produced by indoor evaporator coils, fan-coil units and ductless indoor units where gravity drainage is unavailable. | Condensate water | 10–40 L/h | 2–15 m lift | Humid tropical, coastal and high-condensation environments; suitable for indoor installations. | Required lift, reservoir capacity, noise level, float-switch reliability, discharge-pipe size and compatibility with acidic condensate. | Low-power motor; models with demand-based operation and high-water-level alarm help reduce cycling and overflow risk. | Clean the reservoir and inlet screen regularly; inspect tubing for kinks, algae and blockage. |
| Mini Condensate Pump | Small split air conditioners, cassette units and compact fan-coil systems with limited installation space. | Condensate water | 8–25 L/h | 0.5–10 m lift | Residential and light-commercial applications in warm or humid climates. | Very low sound level, compact dimensions, vibration isolation, overflow protection and easy access for cleaning. | Usually intermittent operation; low standby consumption is useful for continuously powered indoor units. | Keep the drain pan and sensor free from dust and biological deposits. |
| Chilled-Water Circulation Pump | Circulates chilled water between chillers, air-handling units, fan-coil units and cooling terminals. | Water or water-glycol mixture | 0.5–500 m³/h | 10–60 m | Commercial buildings, hospitals, hotels and process-cooling systems in most climates. | Design flow, total dynamic head, fluid temperature, glycol concentration, pipe diameter and minimum-flow requirements. | Variable-frequency drives and differential-pressure control can reduce energy use at part load. | Check seals, bearings, air removal, water treatment and system pressure. |
| Primary Chilled-Water Pump | Moves chilled water through the chiller evaporator circuit in primary-only or primary-secondary systems. | Chilled water or glycol solution | 5–1,000 m³/h | 10–35 m | Central plants where stable evaporator flow and chiller protection are required. | Chiller minimum flow, evaporator pressure drop, operating temperature, NPSH margin and pump efficiency at design duty. | Variable-speed control is common in variable-primary-flow systems when approved by the chiller manufacturer. | Maintain correct flow through the evaporator; monitor strainers, sensors and differential pressure. |
| Condenser-Water Pump | Circulates water between a water-cooled chiller and cooling tower or dry cooler circuit. | Cooling-tower water | 10–1,500 m³/h | 15–70 m | Large commercial and industrial systems, especially where water-cooled chillers are practical. | Cooling-tower flow, condenser pressure drop, tower height, water chemistry, corrosion resistance and outdoor exposure. | Variable-speed operation can match cooling load and tower conditions; automatic sequencing improves plant efficiency. | Requires regular water treatment, strainer cleaning, seal inspection and corrosion monitoring. |
| Heat-Pump Hydronic Circulator | Moves heated or cooled water in air-to-water and water-to-water heat-pump systems for radiant floors, fan coils and radiators. | Water or water-glycol mixture | 0.2–100 m³/h | 3–40 m | Cold winters, moderate climates and reversible systems that provide both heating and cooling. | Lowest outdoor design temperature, glycol percentage, flow-temperature range, defrost-cycle behavior and freeze protection. | EC motors, proportional-pressure control and weather-compensated system control support efficient part-load operation. | Protect outdoor pipework from freezing; verify glycol concentration and purge trapped air. |
| Drainage and Sump Pump | Removes accumulated water from plant rooms, equipment bases, condensate collection pits and below-grade HVAC areas. | Drainage water; sometimes lightly contaminated water | 20–300 L/min | 5–30 m lift | Basements, underground plant rooms, flood-prone sites and areas with unreliable gravity drainage. | Solids-handling capability, pit size, float arrangement, emergency capacity, check valve and alarm integration. | Automatic float or level-sensor control; standby pump and high-level alarm improve resilience. | Test automatic start, clean the pit and inspect the check valve and discharge line. |
| Cooling-Tower Make-Up Pump | Supplies replacement water to cooling towers or evaporative condensers after evaporation, blowdown and drift losses. | Fresh or treated make-up water | 0.1–20 m³/h | 15–50 m | Hot, dry climates and facilities with high cooling-tower evaporation rates. | Required make-up rate, inlet pressure, water hardness, backflow protection, level-control accuracy and local water restrictions. | Level-based control and variable speed can prevent excessive filling and reduce unnecessary pump operation. | Use suitable filtration and backflow prevention; inspect valves, level sensors and water-treatment equipment. |
| Refrigerant Recovery Pump | Transfers refrigerant during air-conditioner servicing, recovery and system evacuation procedures. | Refrigerant vapor and liquid | Application-dependent | Application-dependent | Service workshops and field maintenance in all climates; equipment must match the refrigerant used. | Approved refrigerant type, recovery capacity, allowable pressure, oil management, electrical safety and local environmental regulations. | Automatic shutoff, pressure monitoring and thermal overload protection improve safe operation. | Use only certified equipment and recovery cylinders; never vent refrigerant or mix incompatible refrigerants. |
| Vacuum Pump for Refrigeration Service | Evacuates air and moisture from newly installed or repaired refrigeration and air-conditioning circuits before charging. | Air and non-condensable gases | 2–15 m³/h | Deep vacuum to approximately 15–50 microns, depending on equipment and test method | Installation and maintenance work in humid, coastal or rapidly changing climates where moisture control is important. | Ultimate vacuum, pumping speed, system volume, gas-ballast function, oil quality and micron-gauge verification. | Two-stage designs generally achieve deeper vacuum; isolation valves and a calibrated micron gauge improve commissioning accuracy. | Change contaminated oil, use short large-diameter hoses and confirm the vacuum holds after isolation. |
| Solar-Powered DC Water Pump | Circulates water in remote cooling, evaporative-cooling or small solar-assisted HVAC installations without dependable grid power. | Clean water or approved water-glycol mixture | 0.1–30 m³/h | 3–40 m | Remote, sunny and off-grid locations; performance varies with solar irradiance and storage capacity. | Solar array output, battery capacity, hydraulic duty, controller compatibility, cloudy-weather autonomy and freeze protection. | Brushless DC motors and maximum-power-point tracking can improve output over changing sunlight conditions. | Protect electronics from heat and moisture; clean panels and inspect wiring and dry-run protection. |
| Variable-Speed In-Line Pump | Compact circulation for zoned chilled-water, heating-water and small commercial HVAC systems. | Water or water-glycol mixture | 0.1–60 m³/h | 2–35 m | Buildings with fluctuating loads, multiple control zones and limited mechanical-room space. | Control mode, proportional-pressure range, constant-pressure range, fluid temperature, motor protection and connection size. | Integrated electronic commutation and automatic speed modulation typically reduce electricity use at part load. | Install with correct flow direction; remove air and verify that system valves do not force dead-heading. |