Vertiv Liebert PEX3 25-100kW R410A Precision Air Conditioning for Data Centers. Model PEX3.

Product Overview

The Liebert PEX3 is Vertiv’s room-based precision cooling series using R410A refrigerant, covering cooling capacities from 25 kW to 100 kW in downflow and upflow air-discharge configurations. It is designed for data center, telecom switchroom and computer room applications requiring precise temperature and humidity control year-round.

The series uses energy-efficient EC fans and Copeland scroll compressors with far-infrared humidification for stable humidity control. Full-front access maintenance allows all service operations from the front of the unit so it can be installed against walls, and monitoring is provided via RS485 with an optional 9-inch color touchscreen controller.

International models span unit sizes P1030 (31.1 kW, 10100 m3/h air flow, 1975 x 930 x 995 mm, 360 kg) through P2100 (98.3 kW, 27200 m3/h, 1975 x 2230 x 995 mm, 780 kg), giving integrators a scalable family for rooms from small equipment spaces to large white space.

Key Features

• 25-100 kW cooling capacity range with R410A refrigerant
• Upflow and downflow air discharge configurations
• Energy-efficient EC fan technology
• Copeland scroll compressors with far-infrared humidification
• Full-front access maintenance for wall-adjacent installation
• RS485 monitoring with optional 9-inch touchscreen controller

Specifications

Key Features of Liebert PEX3 25-100kW

Liebert PEX3 25-100kW belongs to the precision cooling category designed for temperature- and humidity-sensitive rooms. Equipment of this class commonly offers year-round operation, precise control and airflow options such as upflow, downflow or in-row configurations.

Typical Applications of Liebert PEX3 25-100kW

Precision cooling is widely used in data centers, network rooms, laboratories and control rooms where sensitive electronics require stable environmental conditions around the clock.

Selecting Liebert PEX3 25-100kW with BS Comtec

BS Comtec supplies precision air conditioners from Vertiv, Huawei and other brands with global delivery. Share your room heat load, layout and redundancy needs, and we will propose suitable cooling options.

Liebert PEX3 vs PEX4 vs CRV: Which Vertiv Series Fits Your Room?

The PEX3 is the mainstream room-based workhorse of the Liebert family: EC fans, R410A circuit and 25-100 kW capacities at the lowest acquisition cost – the right pick when your room load is stable and predictable. Step up to the PEX4 full-frequency series when part-load efficiency matters: variable-speed fans and compressors trim energy noticeably in rooms with fluctuating IT loads. For contained high-density aisles above 15 kW per cabinet, the Liebert CRV row-based series shortens the air path dramatically. Practical rule: PEX3 for switchrooms and equipment rooms, PEX4 for variable-load white space, CRV for hot-aisle containment – and all three share Vertiv service tooling, keeping spares planning simple.

Application Scenarios in Telecom and Edge Sites

In a typical 60-100 m2 telecom switchroom carrying a 20-30 kW DC power and transmission load, two PEX3 units in N+1 hold 23 +/- 1C year-round, and the far-infrared humidifier covers dry seasons without steam bursts. For edge sites in Africa and the Middle East where ambient exceeds 45C, we recommend the high-ambient condenser option with reviewed line lengths. Laboratories and control rooms favor PEX3 for its stable humidity band. If your site combines rectifier power with precision cooling – common in hybrid solar projects – see our 5G base station 48V power sizing guide to align power and cooling budgets.

Quick Sizing Guide for PEX3

Start from heat load, not floor area: total the IT load, add lighting and envelope gains, then apply a 1.15-1.3 factor for N+1. Telecom and edge rooms typically land at 300-450 W/m2; a 40 m2 room at 350 W/m2 needs about 14 kW sensible cooling, pointing to a P1040-class unit with headroom. Keep one spare fan and filter kit per site – consumables differ between PEX3 and PEX4 frames. Send BS Comtec your load list and floor plan, and we return a unit-level selection within one business day.

Frequently Asked Questions

How do I choose the right Liebert PEX3 25-100kW capacity?

Capacity selection starts from your room’s heat load (IT equipment, lighting, envelope), airflow arrangement and redundancy targets. Send your room details to BS Comtec for a cooling proposal.

Is Liebert PEX3 25-100kW suitable for my existing room layout?

Suitability depends on floor plan, airflow direction and installation space. Our team can review your layout and recommend upflow, downflow or in-row variants accordingly.

Does BS Comtec deliver Liebert PEX3 25-100kW overseas?

Yes, BS Comtec arranges international shipping with export-standard packing. Transit time and freight cost depend on destination and project schedule — request a quote for specifics.

What after-sales support is available for Liebert PEX3 25-100kW?

Warranty follows the manufacturer’s policy, and BS Comtec assists with spare parts inquiries and service coordination. Contact us with your installation details for support options.

In which environments is Liebert PEX3 25-100kW typically installed?

It is typically installed in data centers, telecom rooms, laboratories and other facilities requiring continuous, precise climate control for sensitive equipment.

What is the difference between Liebert PEX3 and PEX4?

PEX3 is the fixed-speed value line covering 25-100 kW with R410A, ideal for stable loads at lower acquisition cost. PEX4 full-frequency adds variable-speed fans and compressors, cutting part-load energy use for fluctuating IT loads. BS Comtec quotes either series based on your load profile.

Does the Liebert PEX3 work in high-ambient climates above 45C?

Yes, with the high-ambient condenser option the PEX3 international models are widely deployed across Africa and the Middle East. Share your site conditions and BS Comtec will return a configured proposal with condenser selection.