Integrated Wi-Fi
ZS-WF includes connected control through MHI's Smart M-Air platform for remote access from a compatible phone or tablet.
⚪ Platinum · Mitsubishi Heavy Industries
MHI ZS Premium.
Refined comfort at the top of the range.
Our Platinum MHI option combines integrated Wi-Fi, Smart M-Air control, included advanced filtration, exceptionally quiet operation and premium residential refinement.
Starting from
£1,895
supplied and installed for a suitable standard single-split, back-to-back installation.
Tap the size you want to explore
❄️ Cooling
☀️ Heating
📱 Integrated Wi-Fi
🌿 Advanced filtration
🛡️ 5-year parts warranty
🧰 F-Gas certified installation
✨ Why choose ZS Premium?
A premium MHI system built around comfort, air quality and refinement.
ZS-WF is for customers who want more than straightforward temperature control. It combines connected control, low sound levels and included specialist filtration in a premium residential platform.
Allergen Clear Filter
The supplied ZS-WF technical data includes an Allergen Clear Filter to support the range's stronger air-quality positioning.
Deodorising filtration
A Photocatalytic Washable Deodorising Filter is also included on the supplied ZS-WF specification.
As low as 19 dB(A)
The 2.5 and 3.5 kW ZS-WF models reach 19 dB(A) indoor sound pressure at the ultra-low setting.
Strong seasonal efficiency
The 2.5 kW model reaches A+++ cooling / A++ heating, while the 3.5 kW model is rated A++ / A++.
Multi-split compatible
ZS indoor units can also form part of compatible MHI multi-split configurations where the project calls for one outdoor unit serving several rooms.
🎛️ Control flexibility: an infrared remote is supplied, Smart M-Air provides connected control, and optional hard-wired touchscreen control can be specified for suitable installations.
📊 Manufacturer-backed detail
Premium specification, without the wall of numbers.
These are the technical details most customers actually care about. Exact figures vary by capacity.
2.5 kW cooling3.2 kW nominal heating
3.5 kW cooling4.0 kW nominal heating
5.0 kW cooling5.8 kW nominal heating
Lowest indoor sound19 dB(A) on 2.5 / 3.5 kW
2.5 kW efficiencyA+++ cooling / A++ heating
RefrigerantR32
2.5 / 3.5 kW pipe lengthUp to 20 m one-way
5.0 kW pipe lengthUp to 25 m one-way
Included filtrationAllergen + photocatalytic deodorising
🧰 What's included?
Our standard installation, clearly explained.
The advertised price assumes a straightforward single-split job. We normally confirm suitability remotely from room dimensions and photos.
✅ Standard starting price assumes
- ✓One indoor unit connected to one outdoor unit.
- ✓Back-to-back positioning on opposite sides of the same external wall.
- ✓Approximately 2–3 metres of refrigerant pipework.
- ✓Gravity condensate drainage with no pump required.
- ✓Straightforward access at normal working height.
- ✓Pressure testing, evacuation, commissioning and customer handover.
- ✓For most suitable single splits, power can normally be taken from a suitable nearby socket circuit via a local fused spur.
🟠 We review these before fixing the price
- ↗Longer or more complex refrigerant routes.
- 💧Condensate pumps where gravity drainage is not possible.
- 🪜High-level units or specialist access requirements.
- 🔩Non-standard mounting or unusual structural conditions.
- ⚡Additional electrical work where the existing circuit is unsuitable.
- 🔗Multi-split projects. These require technical review and a dedicated consumer-unit supply installed by an electrician at additional cost.
📈 Platinum compared
Where ZS Premium sits in the AC BRUM range.
Choose the equipment level that matches what you value rather than simply buying the most expensive option.
🔵 MHI Standard Plus
ZTL Standard Plus
Built-in Wi-Fi and Smart M-Air at a lower MHI starting price.
📱 Integrated Wi-Fi
📆 Weekly scheduling
From £1,695 standard install
🟣 MHI Premium · New 2026
ZT Premium
The newer single-split-focused MHI option with next-generation efficiency and integrated smart control.
📱 Smart M-Air
🌿 Included filtration
⚡ High efficiency
From £1,895 standard install
🟢 Strongest value
Haier Revive Plus
Built-in Wi-Fi and modern everyday features at the lowest starting price.
📱 Built-in Wi-Fi
💷 Lowest starting price
From £1,295 standard install
🔗 Why choose ZS instead of ZT? ZS-WF remains particularly useful when premium filtration, proven quiet operation, alternative indoor-unit finishes or MHI multi-split compatibility are important. ZT is the newer 2026 single-split-focused range.
❓ Common questions
Before you request a Platinum quote.
Does ZS Premium have built-in Wi-Fi?
Yes. The ZS-WF specification used by AC BRUM includes Wi-Fi / Smart M-Air control.
What filtration is included?
The supplied ZS-WF technical data includes an Allergen Clear Filter and a Photocatalytic Washable Deodorising Filter.
How quiet is ZS Premium?
The 2.5 and 3.5 kW ZS-WF models reach 19 dB(A) indoor sound pressure at the ultra-low setting. The 5.0 kW model reaches 22 dB(A). Actual perceived sound depends on operating mode, room acoustics and installation position.
Can ZS be used on a multi-split system?
Yes, compatible ZS indoor units can be used with suitable MHI multi-split outdoor units. Multi-split projects are technically reviewed and priced separately from our advertised single-split starting prices.
Which ZS size do I need?
We size the unit from the room dimensions, glazing, insulation, ceiling height and heat load. The current AC BRUM Platinum sales options are 2.5, 3.5 and 5.0 kW.
Do I need a site survey?
Usually not for a straightforward residential single-split installation. Room measurements, clear indoor and outdoor photos and a floor plan where available can normally give us enough information to quote remotely.
What warranty is included?
Our current offer includes a five-year parts warranty. Exact warranty conditions are confirmed with the final equipment and quotation.
📸 Platinum remote quotation
Want the ZS Premium system in your home?
Tell us about the room and where you would like the indoor and outdoor units. We can normally size and assess a straightforward ZS-WF installation remotely.
Mitsubishi Heavy Industries and Mitsubishi Electric are separate manufacturers. Product availability can change, including alternative ZS finishes. AC BRUM confirms the exact equipment, capacity and installation requirements before booking.