Hitachi KPI Passive Total Heat Exchanger with Celluloid Exchanger

Product Overview: At a Glance

The Hitachi KPI Passive Total Heat Exchanger delivers efficient energy recovery ventilation (ERV) to improve indoor air quality and reduce HVAC load. With a cross-flow celluloid exchanger and a broad flow rate capacity range - from 250 m³/h up to 2,000 m³/h, it’s an ideal solution for buildings aiming to balance fresh air intake with energy efficiency.

Key Features & Benefits

• High energy recovery - reaches an impressive total energy exchange efficiency up to ~83%, Transfers both heat and moisture between air streams for cost savings
• Wide airflow options - available across variants from KPI-252E4E (250 m³/h) to KPI-2002E4E (2,000 m³/h), supporting mixed-use commercial and residential spaces
• Multiple operating modes - supports free ventilation, automatic ventilation, and heat recovery to maximise efficiency and air quality control
• Ultra-quiet operation - uses ErP Lot 11-compliant fan motors with noise levels as low as 24 dB(A) on select models
• Compact design - relatively small footprint (e.g. KPI-252E4E: 900 × 270 × 750 mm) fits ducted systems with installation flexibility
• Optional enhanced filtration & control - supports CO₂ sensor integration and high-efficiency F7 filters for improved air purification

Typical Applications & Use Cases

Ideal for offices, apartments, schools, and energy-conscious commercial environments, the KPI Passive Total Heat Exchanger provides continuous fresh air with heat and moisture recovery; boosting comfort, maintaining indoor air quality, and reducing HVAC strain.

Technical Overview

The KPI series includes models like KPI-252E4E, KPI-502E4E, KPI-802E4E, KPI-1002E4E, KPI-1502E4E, and KPI-2002E4E, each offering a specific airflow range, efficiency, and casing size. All are based on cross-flow celluloid heat exchanger technology and operate on standard single-phase 230 V power supply. With energy recovery up to 83% and fitted with a low-consumption electronically commutated motor, this unit is well-placed to lower running costs for your installation. For full specifications, including dimensions, efficiency rating, noise levels, and static pressure - please refer to any of the documentation on this page.