• Hitachi air conditioning unit with R290 natural refrigerant label on a white background
  • Two Hitachi air conditioning units on a white background
1 2

Hitachi airHome 800 R290 3 Phase Split Air to Water Heat Pump Outdoor Unit

Hitachi airHome 800 R290 3 Phase Split Air to Water Heat Pump Outdoor Unit

£0.00
£0.00 £0.00
Sale Sold out
Taxes included.
Brand logo

Product Overview: At a Glance

The Hitachi airH2O 800 R290 3 Phase Split Air to Water Heat Pump Outdoor Unit (RASM-TW2E series) provides sustainable heating, cooling, and domestic hot water for residential and light commercial applications. Featuring natural R290 refrigerant with ultra-low GWP, it offers advanced safety, high efficiency, and reliable performance in demanding conditions, ideal for new builds and renovations.

Key Features & Benefits

  • Natural R290 refrigerant - GWP of just 3 for minimal environmental impact and superior efficiency.
  • Three-phase operation - supports robust electrical setups for larger installations.
  • Advanced safety features - sealed refrigerant handling with real-time leak detection and up to 12 safety measures for installer and user protection.
  • Quiet and compact design - enhanced insulation, anti-vibration, and optimized fan for low noise in urban environments.
  • High water temperature - up to 75°C in heating mode, maintaining 60°C at -20°C outdoor for consistent output.
  • Split system versatility - integrates with indoor hydroboxes for flexible heating, cooling, and DHW solutions.

Typical Applications & Use Cases

Perfect for homes, apartments, and small commercial spaces, the RASM-TW2E series delivers eco-friendly air-to-water heating with safety and efficiency. Its robust design suits larger properties or renovations needing reliable hot water and space heating in cold climates.

Technical Overview

The Hitachi airH2O 800 3-phase outdoor units employ R290 refrigerant in a split configuration, offering a wide range of capacities to suit various applications. With advanced noise reduction, constant power/water technologies, and app-based monitoring, it ensures safe, efficient operation up to 75°C water output. Detailed specifications, including dimensions and system compatibility, are available in the product datasheet.

📄 View Specification Sheet

Please contact us for delivery information & quotes. Thank you.

Items on this page may also be known under the following references:

  • airH2O 800 - RASM-(V)TW2E
  • Yutaki-S/SCombi/S80 Outdoor Units 1 phase
  • R290 - Split Air to Water Heat pump - Outdoor Unit - kW Nominal Output - Single Phase
  • Yutaki S / Yutaki S Combi / S80
  • airH20
  • airH2O 800M

Additional Downloads:

No downloads available.

  • Premium Aftercare
  • Flexible Returns
  • Fast Shipping
Enquire About This Product View full details
Variant Variant total Quantity Price Variant total
Hitachi air conditioning unit with R290 natural refrigerant label on a white background
RASM-4TW2ERASM-4TW2E
RASM-4TW2ERASM-4TW2E
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Hitachi air conditioning unit with R290 natural refrigerant label on a white background
RASM-5TW2ERASM-5TW2E
RASM-5TW2ERASM-5TW2E
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Hitachi air conditioning unit with R290 natural refrigerant label on a white background
RASM-6TW2ERASM-6TW2E
RASM-6TW2ERASM-6TW2E
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
View cart
0

Total items

£0.00

Product subtotal

Taxes included. Discounts and shipping calculated at checkout.
View cart

Interested in this product?

We can provide any item listed on our website for you, please fill out the form below with your requirements and a member of our team will get back to you shortly.

Enquire about this product

Hitachi airHome 800 R290 3 Phase Split Air to Water Heat Pump Outdoor Unit FAQs

What is the Hitachi airHome range?
Hitachi airHome is a residential air conditioning line designed for comfort, efficiency, and smart control. With stylish indoor units and quiet operation, it’s ideal for UK homes.
What is R290 refrigerant?
R290 is a natural refrigerant (propane-based) with ultra-low global warming potential. It’s used in some of the latest heat pump and air conditioning systems to support sustainability and compliance with UK decarbonisation targets.
What does "split system" mean in HVAC?
A split system consists of two main components - an indoor unit and an outdoor unit, connected by refrigerant piping. They’re common in both residential and light commercial settings.
What is an air-to-water system?
Air-to-water heat pumps use outdoor air to produce hot water for heating or domestic hot water supply, offering an efficient and green alternative to traditional boilers.
What is a heat pump?
A heat pump transfers heat rather than generating it through combustion, offering efficient heating and cooling. Modern heat pumps can deliver multiple units of heating for every unit of electricity consumed, helping lower running costs.
What’s the difference between single-phase and three-phase HVAC systems?
Single-phase systems are common in UK homes and small businesses, while three-phase systems are designed for larger commercial or industrial applications where higher power and efficiency are required.

We’re Here To Help With All Hitachi Heat Pump and RAC Solutions

Need any help with our range of Hitachi airH20 800 products? Looking for advice on Hitachi heat pump systems? Our team is here to support you with both air-to-water heat pumps and RAC (Room Air Conditioning) split systems. Whether you need efficient residential heating and cooling or a commercial renewable energy solution, we can provide expert recommendations. From product selection and energy efficiency advice to installation and after-sales service, we make sure you get the most from Hitachi heat pump technology. Contact us today for help with your Hitachi heat pump or RAC system.

Contact Us