UK portable AC stock crisis: Meaco & Midea portable units face industry-wide dispatch delays of several weeks to months. Split, multi-split, window, cassette & accessory lines are unaffected. Read our dispatch & fulfilment update

Winter is coming — your air conditioner heats too. Cut heating bills by up to 67% vs electric heaters.

🇬🇧 Delivering air conditioning across the UK — free UK mainland delivery on in-stock units
Stockool
Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner
Hitachi

Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner

In StockEnergy A+++
£1,567.160

Trade pricing available — apply or sign in for your trade rate

3-5 working days
UK-Wide Delivery
Free UK mainland delivery on in-stock units
🇪🇺 EU Delivery available
Dispatched in 3–7 working days, then 5–10 working days EU transit
Orders under €150 ship VAT-paid at checkout (IOSS, no charges on delivery). Orders of €150 or more ship DDU — import VAT and customs duty are collected by the courier on delivery.

Retail prices include VAT.

Boasting superior styling and industry-leading performance, the Hitachi airHome 800 5.0kW flagship split system brings quiet, high-efficiency cooling and heat pump warmth to large lounges and premier master suites. Capable of 17,000 BTU cooling and 20,500 BTU heating, it maintains optimal climate control effortlessly while earning an outstanding A+++ efficiency score. Native Wi-Fi support connects to airCloud Go, enabling real-time remote commands, scheduled presets, and hands-free voice management through Amazon Alexa or Google Home. Intelligent onboard sensors adjust the airflow direction based on room presence, while comprehensive FrostWash automated sanitisation maintains exceptional component hygiene and reduces power wastage over time. Installation requires a licensed F-Gas specialist to safely fit indoor and outdoor units and commission refrigerant circuits.

1

Need it installed?

We'll match you with a local HVAC engineer.

Smart-home ready

Connects natively with the systems below — control by app or voice.

Amazon AlexaGoogle HomeairCloud Go
  • Free UK mainland delivery on in-stock units
  • Manufacturer warranty included
  • 14-day returns

Cooling Capacity

17,000 BTU

Energy Rating

A+++

Recommended Room

35-50 m²

Technical documents & videos

More from Hitachi →

Official Hitachi manual

The manufacturer's PDF for this model is being sourced and will be downloadable here.

Full Model Line Catalogue

Hitachi catalogue — open the official flipbook in a new tab.

Open
All Hitachi catalogues and rangesMissing a document? Ask our team and we will send it over.

Full Specifications

Cooling Capacity17,000 BTU
Recommended Room Size35-50 m²
Energy RatingA+++
Smart HomeAmazon Alexa, Google Home, airCloud Go
Noise Level—
CategorySplit System AC
SKUHIT-AH800-50-SET

Physical dimensions

Exact dimensions for this model are being confirmed with Hitachi — ask us and we will send the cut sheet with mounting and clearance figures.

Description

Boasting superior styling and industry-leading performance, the Hitachi airHome 800 5.0kW flagship split system brings quiet, high-efficiency cooling and heat pump warmth to large lounges and premier master suites. Capable of 17,000 BTU cooling and 20,500 BTU heating, it maintains optimal climate control effortlessly while earning an outstanding A+++ efficiency score. Native Wi-Fi support connects to airCloud Go, enabling real-time remote commands, scheduled presets, and hands-free voice management through Amazon Alexa or Google Home. Intelligent onboard sensors adjust the airflow direction based on room presence, while comprehensive FrostWash automated sanitisation maintains exceptional component hygiene and reduces power wastage over time. Installation requires a licensed F-Gas specialist to safely fit indoor and outdoor units and commission refrigerant circuits.

Compare similar units

Side-by-side specs for other split system ac in a similar BTU range.

This Unit
Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner

Hitachi

Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner

Mitsubishi Electric MSZ-HR50VF 5.0kW Wall Mounted Split System

Mitsubishi Electric

Mitsubishi Electric MSZ-HR50VF 5.0kW Wall Mounted Split System

Mitsubishi Electric MLZ-KP50VF 5.0kW 1-Way Ceiling Cassette

Mitsubishi Electric

Mitsubishi Electric MLZ-KP50VF 5.0kW 1-Way Ceiling Cassette

Daikin Stylish FTXA50AW 5.0kW Designer Split System

Daikin

Daikin Stylish FTXA50AW 5.0kW Designer Split System

Cooling Capacity
17,000 BTU
17,000 BTU
17,000 BTU
17,000 BTU
Room Size
35-50 m²
Up to 40m²
Up to 40m²
Up to 45m²
Energy Rating
A+++
A++
A+
A++
Heating Capable
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Smart Home
Amazon Alexa, Google Home, airCloud Go
Not built-in
Amazon Alexa, Google Home
Amazon Alexa, Google Home
Stock
In Stock
In Stock
In Stock
In Stock
Price inc VAT
£1,567.16
£1,174.99
£2,145.00
£2,145.00

Common questions about the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner

How many BTU is the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner?

The Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner has a cooling capacity of 17,000 BTU, suitable for 35-50 m².

What room size is the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner suitable for?

The Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner is recommended for rooms 35-50 m².

Can I install the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner myself?

No — this unit requires professional installation by a qualified F-gas engineer. Use our Find an Installer service to get matched with a local HVAC professional.

Is the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner smart-home compatible?

Yes — the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner supports Amazon Alexa, Google Home, airCloud Go for app and voice control.

How long does delivery of the Hitachi airHome 800 5.0kW Flagship Smart Inverter Split System Air Conditioner take?

This unit is 3-5 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.

Filter by brand

BelacoBelacoStiebel EltronStiebel EltronBroughtonBroughtonReznorReznorCIATCIATPowrmaticPowrmaticFlaktGroupFlaktGroupSwegonSwegonSuntecSuntecCostwayCostwayVYtronIXVYtronIXBeldrayBeldrayClarkeClarkeOmega AltalfaOmega AltalfaDanthermDanthermAmcorAmcorRhossRhossKelvinatorKelvinatorWestinghouseWestinghouseYorkYorkTraneTraneLennoxLennoxBlack + DeckerBlack + DeckerHoneywellHoneywellSenvilleSenvilleAUXAUXComfeeComfeeWhynterWhynterViessmannViessmannRinnaiRinnaiAermecAermecNIBENIBESinclairSinclairBlyssBlyssFralFralWhirlpoolWhirlpoolElectroluxElectroluxSharpSharpCooper & HunterCooper & HunterDaitsuDaitsuDimplexDimplexBoschBoschVaillantVaillantOlimpia SplendidOlimpia SplendidCarrierCarrierToshibaToshibaMitsubishi Heavy IndustriesMitsubishi Heavy IndustriesDeLonghiDeLonghiHitachiHitachiPro BreezePro BreezeMeacoMeacoAEGAEGDevolaDevolaFujitsuFujitsuelectriQelectriQSamsungSamsungWoodsWoodsMideaMideaHaierHaierTCLTCLHisenseHisenseLGLGGreeGreeEcoAirEcoAirPanasonicPanasonicSealeySealeyDaikinDaikinMitsubishi ElectricMitsubishi Electric

Annual energy savings estimate

How much this A+++-rated unit could save versus a standard C-rated model, based on your usage.

This unit

128 kWh/yr

EER 14

Standard model

224 kWh/yr

EER 8

Est. saving

£25.94

96 kWh/yr less

Estimate based on the unit's energy-rating efficiency factor and cooling capacity (17,000 BTU). Actual savings vary with room size, climate and usage patterns.

Winter heating cost: this AC vs electric heaters

This unit reverses to heat your room in winter. Based on its 6 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£1217

This AC / season

£406

You save / season

£811

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC1502 kWh£406Up to 300%
Plug-in electric heater4506 kWh£1217100%
Electric storage heater4506 kWh£1217100%

Heat output estimated from this unit's 20,500 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →

Share your savings

This heat-pump AC costs only £406/season to heat a room vs £1217 for an electric heater - that's £811 saved. https://stockool.store/products/hitachi-airhome-800-5-0kw-flagship-smart-inverter-split

X Post on X WhatsApp

You may also need

Sealey Air Cooler, Purifier & Humidifier with Remote Control 13L SAC13
In Stock
Sealey

Sealey Air Cooler, Purifier & Humidifier with Remote Control 13L SAC13

Drop-ship available
£151.73inc VAT
Dispatched in 1–2 working days
Sealey Air Cooler, Purifier & Humidifier SAC04
In Stock
Sealey

Sealey Air Cooler, Purifier & Humidifier SAC04

Drop-ship available
£92.33inc VAT
Dispatched in 1–2 working days
Sealey Air Cooler, Heater, Purifier & Humidifier SAC41
In Stock
Sealey Heats too

Sealey Air Cooler, Heater, Purifier & Humidifier SAC41

Heats too (heat pump)
Drop-ship available
£237.53inc VAT
Dispatched in 1–2 working days
Sealey Commercial Portable Air Cooler SAC125
In Stock
Sealey

Sealey Commercial Portable Air Cooler SAC125

Drop-ship available
£989.93inc VAT
Dispatched in 1–2 working days

We use cookies to measure how the store is used and to improve it. You can accept all cookies or keep only the essential ones needed to run your cart and checkout. See our privacy policy.