# VERHI > Data center UPS, precision air conditioning and modular data center solutions. VERHI designs and manufactures data center infrastructure: precision air conditioning, uninterruptible power supply (UPS) and micro-module data centers, plus installation, maintenance and project services for global customers. ## Key pages - [Products](https://www.verhi.com/cn/products/) - [Services](https://www.verhi.com/cn/services/) - [About VERHI](https://www.verhi.com/cn/about/) - [Our Mission](https://www.verhi.com/cn/our-mission/) - [Gallery](https://www.verhi.com/cn/gallery/) - [Knowledge Base](https://www.verhi.com/cn/knowledge/) - [News](https://www.verhi.com/cn/news/) - [Blog](https://www.verhi.com/cn/blog/) - [Events](https://www.verhi.com/cn/events/month/) - [Contact](https://www.verhi.com/cn/contact/) ## Latest knowledge and news - [How to Plan the HI2000 Structural Configuration for a Micro Module Deployment](https://www.verhi.com/cn/knowledge/hi2000-structural-configuration-plan/): You've got a 20 kW IT load going into a small server room, and the vendor asks for the HI2000 structural configuration before they ship. The question is not which cabinet looks neat—it's where the cooling coil, the UPS, and the battery... - [New Precision Cooling Standards: What Changes for Data Center Operators](https://www.verhi.com/cn/new-precision-cooling-standards-what-changes/): Why Precision Cooling Standards Matter Now Data center operators are facing a new wave of precision cooling standards that redefine how efficiency is measured and reported. These updates aren't just paperwork—they affect equipment selection, energy budgets, and even regulatory compliance. If you're - [Precision Air Conditioner High Pressure Alarm: Causes and Fixes for CRAC Units](https://www.verhi.com/cn/precision-air-conditioner-high-pressure-alarm/): What Does a High Pressure Alarm Mean? A precision air conditioner high pressure alarm is the unit's way of saying the refrigerant pressure on the discharge side has climbed past a safe limit. If you ignore it, the compressor can trip on... - [Precision Air Conditioner Low Pressure Alarm: Causes and Troubleshooting](https://www.verhi.com/cn/precision-air-conditioner-low-pressure-alarm/): What does a precision air conditioner low pressure alarm mean? A precision air conditioner low pressure alarm is a protective trip that occurs when the suction pressure drops below a set threshold, typically around 50–60 psig for R-410A systems. It's your CRAC... - [Precision Air Conditioner Heater Troubleshooting: A Field Guide](https://www.verhi.com/cn/precision-air-conditioner-heater-troubleshooting/): Picture this: it's a cold January night in a telecom closet, and the precision air conditioner is blowing cool air instead of warm. The room temperature drops below the setpoint, and alarms start piling up on the BMS. The culprit is often... - [Precision Air Conditioner Humidifier Troubleshooting: A Field Guide for Data Center Engineers](https://www.verhi.com/cn/precision-air-conditioner-humidifier-troubleshooting/): Start with the symptom, not the part When a CRAC unit's humidifier stops producing steam, the first instinct is to replace the cylinder. That's often a waste of money. In my experience, the actual fault is usually something simpler—a blocked drain, a... - [Underfloor Airflow Data Center Cooling: When It Works and When It Doesn’t](https://www.verhi.com/cn/underfloor-airflow-data-center-cooling/): What Is Underfloor Airflow Data Center Cooling? Underfloor airflow data center cooling uses the space beneath a raised floor as a supply plenum. Conditioned air is pushed into that void by CRAC or CRAH units, then exits through perforated tiles placed in... - [CRAC IO Board Troubleshooting: A Practical Guide to Control Boards and Sensors](https://www.verhi.com/cn/crac-io-board-troubleshooting/): What Does the IO Board Do in a CRAC Unit? CRAC IO board troubleshooting starts with understanding what that board actually does. The IO (input/output) board is the middleman between the controller and the rest of the unit. It receives signals from... - [Chilled Water versus Direct Expansion Cooling: Which Is Right for Your Data Center?](https://www.verhi.com/cn/chilled-water-versus-direct-expansion-cooling/): Chilled Water versus Direct Expansion Cooling: The Short Answer The short answer is that chilled water versus direct expansion cooling comes down to scale and infrastructure. Chilled water systems cool large facilities more efficiently, while direct expansion (DX) units are simpler, cheaper... - [Precision Air Conditioner Condenser Cleaning: A Practical Guide for Data Center Cooling](https://www.verhi.com/cn/precision-air-conditioner-condenser-cleaning-guide/): Precision air conditioner condenser cleaning is one of the most cost-effective maintenance tasks you can do for your data center cooling system. When the outdoor coil gets coated with dust, pollen, or cottonwood seeds, the unit can't reject heat as well. That... - [Precision Air Conditioner Refrigerant Components: Filter Drier, Sight Glass, and Pressure Switches Explained](https://www.verhi.com/cn/precision-air-conditioner-refrigerant-components/): A Sticky Expansion Valve That Cost a Night of Uptime Last summer, a facility manager called us about a CRAC unit that was cooling unevenly. The compressor ran, but the room drifted past the setpoint. A quick look at the sight glass... - [Precision Air Conditioner Installation Safety: Key Hazards and Contractor Controls](https://www.verhi.com/cn/precision-air-conditioner-installation-safety/): Precision air conditioner installation safety is not just a checklist item—it's the difference between a smooth commissioning and a serious incident. CRAC units are heavy, electrically live, and full of refrigerant under pressure. When contractors skip planning, people get hurt and equipment... - [Wine Cellar Air Conditioning: What You Need for Proper Wine Storage](https://www.verhi.com/cn/wine-cellar-air-conditioning-guide/): Why Wine Cellar Air Conditioning Differs from Standard AC If you've been researching wine storage, you already know that temperature swings are the enemy. But here's the part that surprises most people: a regular home air conditioner is not designed for a... - [Centralized Control Precision Air Conditioners: Coordinating Multiple CRAC Units in Data Centers](https://www.verhi.com/cn/centralized-control-precision-air-conditioners/): If you manage a data center with more than a few precision cooling units, you've probably seen them fight each other. One unit humidifies while another dehumidifies. Two CRACs blow cold air at each other while a third idles. The result is... - [Standby UPS Versus Online UPS: Which Topology Is Right for Your Server Room?](https://www.verhi.com/cn/standby-ups-versus-online-ups/): The Real-World Problem: A Server That Blinks Off Picture this: a small server room in a suburban office. The IT manager installed a cheap standby UPS because the budget was tight. One afternoon, a forklift in the warehouse next door bumps a... - [UPS Installation Requirements: A Practical Guide for Server Room and Data Center Facilities](https://www.verhi.com/cn/ups-installation-requirements-guide/): Every facility manager eventually faces the same decision: the UPS has arrived, the electrician is on site, and someone needs to sign off on the installation. But UPS installation requirements go far beyond plugging in a battery cabinet. A poorly installed UPS... - [Modular UPS Advantages: Why Scalable Power Makes Sense for Growing Data Centers](https://www.verhi.com/cn/modular-ups-advantages-scalable-data-center-power/): The problem with oversized UPS systems Buying a traditional fixed UPS often means buying for the future. You install a 400 kVA unit now to cover growth you expect in five years, and then you run it at 20% load for most... - [Precision Air Conditioner Environment Requirements: Electrical and Physical Conditions for CRAC Units](https://www.verhi.com/cn/precision-air-conditioner-environment-requirements/): Precision Air Conditioner Environment Requirements: What You Need to Know Precision air conditioner environment requirements go beyond temperature setpoints. A CRAC unit needs a stable electrical supply, proper earthing, enough clearance for airflow, and a floor that can carry its weight. Get... - [UPS Battery Replacement Procedure: A Practical Safety Checklist](https://www.verhi.com/cn/ups-battery-replacement-procedure-safety-checklist/): What Does a Safe UPS Battery Replacement Procedure Look Like? The short answer: a safe UPS battery replacement procedure starts with planning, not with the wrench. You need to schedule an outage window, isolate the load if possible, and follow strict safety... - [Main Utility Switch and ATS Sizing for Modular Data Center Power](https://www.verhi.com/cn/main-utility-switch-ats-sizing-modular-data-center/): Why main utility switch and ATS sizing matters When you're planning a modular data center, the incoming utility power is the first thing that can become a bottleneck. Get the main utility switch and ATS sizing wrong, and you'll face nuisance trips,... - [Precision Cooling Project Field Lessons: Installation, Maintenance, and Uptime Planning](https://www.verhi.com/cn/precision-cooling-project-field-lessons/): Precision cooling installations and maintenance programs can look straightforward on paper, but field projects often reveal problems that a datasheet will not show. This article summarizes practical lessons from installation and maintenance records across server rooms, archives, laboratories, and ot - [Refrigerant Line Sizing for Precision Air Conditioners: Liquid and Suction Line Guidance](https://www.verhi.com/cn/refrigerant-line-sizing-precision-air-conditioners/): The refrigerant lines that connect a split precision air conditioner to its outdoor unit are part of the refrigeration circuit, not just pipework. If the liquid line or suction line is too small, pressure drop rises and cooling capacity falls. If a... - [How Defrost Works in Reversible Precision Air Conditioners](https://www.verhi.com/cn/precision-air-conditioner-defrost-operation-guide/): Defrost is important for reversible precision air conditioners and heat-pump units that operate in heating mode. When the outdoor coil temperature falls below the dew point and the coil is cold enough, moisture from the air freezes on the fin surface. Frost... - [When to Replace an Aging Data Center Air Conditioner](https://www.verhi.com/cn/when-to-replace-aging-data-center-air-conditioner/): Replacing a data center air conditioner is disruptive and expensive, so facility teams should use evidence rather than simply replacing a unit when it reaches a particular age. The right time to replace is when the existing unit can no longer support... - [Cabinet Air Conditioner Benefits for Data Centers: What They Do and When to Use Them](https://www.verhi.com/cn/cabinet-air-conditioner-benefits-data-centers/): A cabinet air conditioner is a compact cooling unit that removes heat from an enclosed IT rack or small equipment enclosure. It is different from a room-level precision air conditioner because it cools the air inside the cabinet rather than trying to... - [Precision Air Conditioner Configurations: Six Common Types for Data Center Cooling](https://www.verhi.com/cn/precision-air-conditioner-configurations-explained/): Precision air conditioning is not one single product type. It describes a class of cooling systems designed to hold temperature and humidity within a controlled range for sensitive environments. When a data center project says precision air conditioner, it may mean a... - [Micro-Module Data Center Cabinet Heat Dissipation: A Practical Guide](https://www.verhi.com/cn/micro-module-data-center-cabinet-heat-dissipation-guide/): Why Cabinet-Level Heat Dissipation Makes or Breaks a Micro-Module Deployment When you're planning a compact data center, the first question is usually about power or space. But the real limit is heat. A micro-module data center cabinet heat dissipation strategy that works... - [Modular Data Center Cabinet Installation: A Practical Step-by-Step Guide](https://www.verhi.com/cn/modular-data-center-cabinet-installation-guide/): What Does Modular Data Center Cabinet Installation Involve? Modular data center cabinet installation is more than just bolting a rack to the floor. It's a sequence of site checks, mechanical fixes, power and grounding connections, cooling hookups, and careful cable management. Get... - [Power and Data Cable Separation Data Center: A Practical Guide for Micro-Module Deployments](https://www.verhi.com/cn/power-data-cable-separation-data-center-micro-module/): You've just signed off on a micro-module data center to handle a new edge workload. The vendor promises fast deployment, but the real test comes when the electrician and the network team show up on the same day. If power and data... - [CRAC Drive Belt Inspection: A Practical Field Guide for Data Center Cooling](https://www.verhi.com/cn/crac-drive-belt-inspection-guide/): Why CRAC Drive Belt Inspection Matters In a computer room air conditioner (CRAC), the blower motor spins a belt that turns the fan wheel. If that belt slips, splits, or snaps, airflow drops and the room heats up fast. A 20 kW... - [Modular Data Center Circuit Labeling: Standards and Safety for Cabinet Electrical Systems](https://www.verhi.com/cn/modular-data-center-circuit-labeling-standards-safety/): When you open a modular data center cabinet, the first thing that should tell you what you're dealing with is the labeling. Clear, standardized circuit labeling is the backbone of electrical safety and operational efficiency. It reduces the risk of human error... - [What to Expect at VERHI Events: A Buyer’s Guide to Data Center Infrastructure Shows](https://www.verhi.com/cn/verhi-events-buyers-guide/): Why Attend a Data Center Infrastructure Event? You’ve got a new facility on the drawing board, or maybe an upgrade that’s been delayed twice. The fastest way to compare suppliers, see hardware in person, and get straight answers is to walk a... - [Why AI Workloads Are Forcing Edge Data Center Demand to Rethink Power and Cooling](https://www.verhi.com/cn/ai-workloads-edge-data-center-demand-3/): The Edge Is No Longer Just a Latency Play For years, edge data centers were about getting compute closer to users to cut latency. Now, AI workloads are changing the math. Inference—the part of AI that runs after a model is trained—often... - [Precision Cooling Standards: What the New Efficiency Rules Mean for Data Centers](https://www.verhi.com/cn/precision-cooling-standards-new-efficiency-rules/): Why Precision Cooling Standards Matter Now If you manage a data center, you've probably noticed the buzz around updated precision cooling standards. These aren't just paperwork changes. They directly affect your PUE, your operating costs, and even your ability to meet regulatory... - [AI Workloads and Edge Data Center Demand: What to Watch in 2026](https://www.verhi.com/cn/ai-workloads-edge-data-center-demand-2026/): Why AI workloads are rewriting the edge playbook AI workloads aren't just living in hyperscale clouds anymore. Increasingly, they're running where the data is generated—factories, hospitals, retail hubs, even cell towers. That shift is redrawing the map for edge data center demand,... - [VERHI events: What to expect at international data center infrastructure shows in 2026](https://www.verhi.com/cn/verhi-events-data-center-infrastructure-2026/): If you're an engineer or facility manager shopping for precision cooling, UPS, or modular data center hardware, trade shows are still one of the fastest ways to compare real equipment side by side. VERHI events in 2026 are designed around that need.... - [UPS vs EPS: How to Choose the Right Backup Power System for Critical Loads](https://www.verhi.com/cn/ups-vs-eps-critical-power-selection-guide/): UPS and EPS sound similar because both provide power when normal utility supply is interrupted, but they are designed for different jobs. An uninterruptible power supply (UPS) protects sensitive electronic equipment from power loss, voltage changes, and frequency changes. An emergency power... - [Data Center Environmental Monitoring System: What to Measure Beyond Temperature](https://www.verhi.com/cn/data-center-environmental-monitoring-system-beyond-temperature/): Why Temperature Alone Isn't Enough If your data center environmental monitoring system only watches room temperature, you're flying blind. Temperature matters, sure, but it tells you almost nothing about humidity swings, condensation risk, or a slow leak under the floor. Those silent... - [Data Center Humidity Damage Prevention: A Practical Guide](https://www.verhi.com/cn/data-center-humidity-damage-prevention/): The Two Sides of Humidity Risk Humidity in a data center is a balancing act. Too dry, and static electricity can build up on surfaces, potentially discharging through sensitive electronics. Too humid, and you risk condensation, corrosion, and even dripping water from... - [Archive Room Temperature Humidity Standards and Precision Air Conditioner Selection](https://www.verhi.com/cn/archive-room-temperature-humidity-standards/): Archive rooms hold records that may need to last decades or centuries, and the climate inside them is not a minor detail. Archive room temperature humidity standards exist because paper, film, and magnetic media degrade faster when temperature or moisture fluctuates. The... - [Servers per Rack Capacity Planning: What Really Limits Your Cabinet Count](https://www.verhi.com/cn/servers-per-rack-capacity-planning/): The short answer: a standard 42U rack can hold anywhere from a few dozen 1U servers to just a handful of high-density GPU nodes. But the real limit is rarely the rack itself—it's power, cooling, and weight. So servers per rack capacity... - [Why AI Workloads Are Reshaping Edge Data Center Demand: An Industry Update](https://www.verhi.com/cn/ai-workloads-edge-data-center-demand-industry-update/): AI workloads are no longer confined to massive hyperscale campuses. As inference and real-time analytics grow, more processing is moving closer to users and devices. That shift is redrawing the map of edge data center demand, and it matters if you plan... - [Data Center Cooling Emergency Response Plan: What to Do When a CRAC Unit Fails](https://www.verhi.com/cn/data-center-cooling-emergency-response-plan/): Why You Need a Data Center Cooling Emergency Response Plan A CRAC unit can stop without warning. A tripped breaker, a worn belt, or a failed compressor—and the room starts heating up. In a typical server room with 10 racks drawing 5... - [Precision Air Conditioner Humidity Control: A Practical Guide for Data Centers](https://www.verhi.com/cn/precision-air-conditioner-humidity-control-guide/): What Is Precision Air Conditioner Humidity Control? Precision air conditioner humidity control is the process by which a computer room air conditioner (CRAC) or air handler maintains relative humidity (RH) within a tight band, typically 40–60% RH, alongside precise temperature control. Unlike... - [Data Center Cooling Energy Efficiency Retrofit: Practical Steps for Existing Facilities](https://www.verhi.com/cn/data-center-cooling-energy-efficiency-retrofit/): A data center cooling energy efficiency retrofit is one of the most cost-effective ways to cut operating expenses in an existing server room. Many facilities run their cooling systems at conservative settings that waste power, and simple changes—like raising setpoints or improving... - [VERHI Events 2026: What We’re Bringing to Global Data Center Infrastructure Shows](https://www.verhi.com/cn/verhi-events-2026-data-center-infrastructure/): Why Trade Shows Still Matter for Data Center Decisions You can read datasheets and watch webinars, but nothing beats putting your hands on a precision air conditioning unit or a UPS cabinet. That's why VERHI events are a regular part of our... - [VERHI HI2000 Deployment Supports Remote Laboratory Operations](https://www.verhi.com/cn/verhi-hi2000-deployment-remote-laboratory/): VERHI HI2000 Deployment: A Milestone for Remote Operations VERHI has just shipped a HI2000 micro-module data center to a remote laboratory, marking a practical step in bringing enterprise-grade IT infrastructure to places where conventional data halls aren't an option. The unit left... - [Precision Cooling Standards Update: What the 2026 Efficiency Rules Mean for Data Centers](https://www.verhi.com/cn/precision-cooling-standards-2026/): New precision cooling standards are tightening efficiency requirements for data center cooling equipment, and they matter because cooling can account for up to 40% of a facility's energy use. In short, if you're planning a new build or retrofitting an existing room,... - [Containerized Data Centers Gain Ground in Field and Mining Operations](https://www.verhi.com/cn/containerized-data-centers-field-mining-operations/): The Shift to Modular, Mobile Data Centers Field operations and mining sites have never been easy places to run IT. Dust, vibration, temperature swings, and unreliable power are the norm. Traditionally, that meant either building a permanent shelter or relying on a... - [Outsourced Precision Air Conditioning Maintenance: What to Look for in a CRAC Service Provider](https://www.verhi.com/cn/outsourced-precision-air-conditioning-maintenance-crac-service-provider-comparison/): A 500 kW data hall can see its inlet air temperature climb past 30°C within minutes if a precision air conditioner trips on a hot afternoon. That's the moment facility teams realize that outsourced precision air conditioning maintenance isn't just a line... - [Precision Air Conditioner Preventive Maintenance Schedule: A Practical Guide for Data Center Facilities](https://www.verhi.com/cn/precision-air-conditioner-preventive-maintenance-schedule/): What Does a Precision Air Conditioner Preventive Maintenance Schedule Look Like? A practical precision air conditioner preventive maintenance schedule for data center facilities typically breaks down into daily/weekly observations, monthly filter and drain checks, quarterly refrigerant and electric - [HI2000 Operation: A Practical Maintenance and Safety Checklist](https://www.verhi.com/cn/knowledge/hi2000-operation-maintenance-safety-checklist/): Why HI2000 operation deserves a written checklist Most cooling failures don't happen on day one. They creep in through clogged filters, loose belts, and setpoints that drift over time. The HI2000 is built for continuous duty, but even the most reliable unit... - [HI2000 Use Cases: Configuring Modular Power and Cooling for Edge Sites, Laboratories, and Remote Facilities](https://www.verhi.com/cn/knowledge/hi2000-use-cases-edge-laboratories-remote-facilities/): If you manage an edge site, a research lab, or a remote facility, you know the pain of trying to fit enterprise-grade power and cooling into a space that was never designed for it. The HI2000 series from VERHI tackles this by... - [VERHI maintenance services for micro-module data centers: what’s new and why it matters](https://www.verhi.com/cn/verhi-maintenance-services-micro-module-data-centers-update/): If you run a micro-module data center, you know the drill: space is tight, power density is climbing, and a single cooling or UPS fault can take down a whole row. That's why VERHI just rolled out an updated maintenance services program... - [VERHI Maintenance Services for Micro-Module Data Centers: What’s New and Why It Matters](https://www.verhi.com/cn/verhi-maintenance-services-micro-module-data-centers/): A micro-module data center can run for years without a glitch—until a cooling fan seizes on a hot July afternoon. That's when the value of a maintenance contract becomes painfully clear. VERHI has reworked its maintenance services for micro-module data centers, and... - [Precision Air Conditioner Installation Checklist: A Practical Guide for Server Rooms](https://www.verhi.com/cn/precision-air-conditioner-installation-checklist/): Why a Precision Air Conditioner Installation Checklist Matters A server room's cooling system is its lifeline. Skip a step during installation, and you might face hot spots, high humidity, or even a full system failure. That's why having a precision air conditioner... - [Precision Air Conditioner Fault Diagnosis: A Practical Checklist for Data Center Cooling](https://www.verhi.com/cn/precision-air-conditioner-fault-diagnosis-checklist/): Start with the Basics: Visual and Auditory Checks When a precision air conditioner fault alarm appears, the first instinct is often to swap parts. Slow down. Many faults trace back to something simple—a dirty filter, a loose belt, or a tripped breaker.... - [Energy Policy Shifts Reshape Data Center Power Design](https://www.verhi.com/cn/energy-policy-data-center-power-design/): Energy policy is no longer a distant regulatory concern—it's a design constraint that hits the data center floor. From carbon pricing in Europe to grid interconnection rules in the US and renewable mandates in Asia, the rules of the game are shifting.... - [HI2000 Use Cases: Configuring Modular Power and Cooling for Edge, Lab, and Remote Sites](https://www.verhi.com/cn/knowledge/hi2000-use-cases-edge-lab-remote-configuration/): When a Remote Site Loses Power, Everything Stops A field engineer once told me about a monitoring station in a desert that lost an entire week of seismic data because a single UPS battery string failed. The load was only 3 kW,... - [HI2000 Structural Configuration: Cabinet Layout and Component Placement Guide](https://www.verhi.com/cn/knowledge/hi2000-structural-configuration/): Why Cabinet Layout Matters More Than You Think You've sized the IT load, picked the UPS, and chosen the cooling. But if the HI2000 structural configuration is wrong, you'll fight airflow, cable management, and service access for years. I've seen it happen...