# Data Center Rear Door Heat Exchanger Market

> Data Center Rear Door Heat Exchanger Market: USD 495.48 million in 2026, USD 1.02 billion by 2035, a 9.96% CAGR from 2025, as 40-75 kW racks need doors.

Publisher: DC Market Insights  
Author: Amit Jain, DC Market Insights  
Published: 2026-10-20  
Last updated: 2026-10-20  
Next review: Apr 2027  
Page: https://www.dcmarketinsights.com/report/data-center-rear-door-heat-exchanger-market

**Frequently Asked Questions**

**What is the size of the Data Center Rear Door Heat Exchanger Market in 2026?**

USD 495.48 million in 2026, up 25.33% from USD 395.34 million in 2025, according to DC Market Insights estimates. The market is projected to reach USD 1.02 billion by 2035, a CAGR of 9.96% from 2025.

**How fast is the rear door heat exchanger market growing?**

9.96% a year from 2025 to 2035, after 25.29% a year from 2020 to 2025, because door capacity sold rises from about 774 MW to 2,334 MW a year while the price falls from USD 480 to USD 405 per kW.

**What is a rear door heat exchanger in a data center?**

A water- or refrigerant-cooled coil in the rear door of a rack that removes server heat before it enters the room. Buyers spent USD 395.34 million on doors, controls and service in 2025; coolant distribution units and chillers are excluded.

**How much does a rear door heat exchanger cost?**

About USD 480 per kW of capacity installed in 2025 (DC Market Insights estimate): about USD 380 per kW for passive doors and USD 520 per kW for active doors, so a 40 kW active door costs about USD 20,800.

**What is the difference between active and passive rear door heat exchangers?**

Active doors, with their own fans, took 66.0% of 2025 spend and reach 60 to 90 kW per rack; passive doors use the server fans, top out near 30 kW and grow only 7.34% a year to 2035.

**How many kW can a rear door heat exchanger cool?**

Up to 75 kW for Schneider Electric's Motivair ChilledDoor, 93 kW for Legrand's ColdLogik CL20 at 14 °C water and 68 kW for nVent's RDHX Pro at 14 °C, which falls to 44 kW at 24 °C water.

**Do AI data centers with liquid cooling still need rear door heat exchangers?**

Often yes: USD 80.64 million of 2025 door spend went to liquid-cooled AI racks, because in NVIDIA's 120 kW GB200 racks networking, storage and power supplies stay air cooled. DC Market Insights puts that air-side share at 25%, falling to 17% by 2035.

**Which region leads the rear door heat exchanger market?**

North America, with USD 158.14 million or 40.0% of 2025 spend. The Middle East and Africa grows fastest at 13.51% a year, and India is the fastest large country at 15.73% a year.

**Who are the leading rear door heat exchanger suppliers?**

Vertiv, Schneider Electric (Motivair), nVent, Legrand (USystems) and Stulz hold about 55% of 2025 spend (DC Market Insights estimate). Schneider Electric paid USD 850 million for an initial 75% of Motivair in February 2025.

**Why do rear door heat exchanger market estimates differ?**

USD 495.48 million in 2026 is the DC Market Insights figure for rear doors, their controls and service only. Estimates that add coolant distribution units, chilled-water plant or all liquid cooling come out two to three times larger.

## Dataset

| Series | Value | Unit |
| --- | --- | --- |
| Market size 2025 | 395.34 | USD million |
| Revenue CAGR | 9.96 | % |
| Market size 2035 | 1,020 | USD million |

## Frequently asked questions

### What is the size of the Data Center Rear Door Heat Exchanger Market in 2026?

USD 495.48 million in 2026, up 25.33% from USD 395.34 million in 2025, according to DC Market Insights estimates. The market is projected to reach USD 1.02 billion by 2035, a CAGR of 9.96% from 2025.

### How fast is the rear door heat exchanger market growing?

9.96% a year from 2025 to 2035, after 25.29% a year from 2020 to 2025, because door capacity sold rises from about 774 MW to 2,334 MW a year while the price falls from USD 480 to USD 405 per kW.

### What is a rear door heat exchanger in a data center?

A water- or refrigerant-cooled coil in the rear door of a rack that removes server heat before it enters the room. Buyers spent USD 395.34 million on doors, controls and service in 2025; coolant distribution units and chillers are excluded.

### How much does a rear door heat exchanger cost?

About USD 480 per kW of capacity installed in 2025 (DC Market Insights estimate): about USD 380 per kW for passive doors and USD 520 per kW for active doors, so a 40 kW active door costs about USD 20,800.

### What is the difference between active and passive rear door heat exchangers?

Active doors, with their own fans, took 66.0% of 2025 spend and reach 60 to 90 kW per rack; passive doors use the server fans, top out near 30 kW and grow only 7.34% a year to 2035.

### How many kW can a rear door heat exchanger cool?

Up to 75 kW for Schneider Electric's Motivair ChilledDoor, 93 kW for Legrand's ColdLogik CL20 at 14 °C water and 68 kW for nVent's RDHX Pro at 14 °C, which falls to 44 kW at 24 °C water.

### Do AI data centers with liquid cooling still need rear door heat exchangers?

Often yes: USD 80.64 million of 2025 door spend went to liquid-cooled AI racks, because in NVIDIA's 120 kW GB200 racks networking, storage and power supplies stay air cooled. DC Market Insights puts that air-side share at 25%, falling to 17% by 2035.

### Which region leads the rear door heat exchanger market?

North America, with USD 158.14 million or 40.0% of 2025 spend. The Middle East and Africa grows fastest at 13.51% a year, and India is the fastest large country at 15.73% a year.

### Who are the leading rear door heat exchanger suppliers?

Vertiv, Schneider Electric (Motivair), nVent, Legrand (USystems) and Stulz hold about 55% of 2025 spend (DC Market Insights estimate). Schneider Electric paid USD 850 million for an initial 75% of Motivair in February 2025.

### Why do rear door heat exchanger market estimates differ?

USD 495.48 million in 2026 is the DC Market Insights figure for rear doors, their controls and service only. Estimates that add coolant distribution units, chilled-water plant or all liquid cooling come out two to three times larger.

## How to cite

Data Center Market Research & Consulting | DC Market Insights, "Data Center Rear Door Heat Exchanger Market", updated 2026-10-20, https://www.dcmarketinsights.com/report/data-center-rear-door-heat-exchanger-market