As UK summers continue to creep into Mediterranean territory, 35°C scorcher days are becoming more common - air conditioning is no longer a luxury for hotels and office blocks.
It’s now a genuine lifestyle upgrade for UK homes, especially those built before insulation was a thing. And one brand making a serious play in this space? Worcester Bosch.
The Climate 5000M is their flagship multi-split air conditioner, and it promises efficient, whisper-quiet climate control across up to five rooms, from just one outdoor unit.
But with growing interest in smart cooling (and heating), does this system live up to the hype, or just come with a posh badge?
Here’s our in-depth review based on Heatable’s engineer insights, testing data, and real-world UK usage scenarios.
Let’s dive in…
🔑 Key Takeaways:
Models from 2.6kW to 12.3kW - enough to handle everything from a snug bedroom to a large open-plan lounge.
A++ for cooling, A for heating (SEER 6.1, SCOP 3.8).
Wi-Fi connectivity via the Bosch HomeCom Easy app.
Indoor units drop to 19–21 dB in silent mode (that’s quieter than a whisper).
Heats in winter, cools in summer, and dehumidifies muggy rooms too.
UK homes need flexible, multi-room climate control from a trusted brand.
👉 Check the latest Bosch Climate range prices (including installation) here.
Specs at a Glance:
Feature | Details |
Cooling/Heating Output | 2.6kW–12.3kW (model dependent) |
Energy Efficiency | A++ cooling (SEER 6.1), A heating (SCOP 3.8) |
Noise Levels | Indoor: 19–21 dB (silent mode); Outdoor: ~50–60 dB |
Filter | High-density (removes 95% of dust, pollen, odours) |
Smart Controls | Wi-Fi via HomeCom Easy app; optional IR remote |
Warranty | 5 years (with Worcester Bosch accredited install) |
[1] A Quick Overview: What Is the Climate 5000M?
The Worcester Bosch Climate 5000M is a wall-mounted, multi-split air conditioner.
That means one outdoor unit can control between one and five indoor units, each managing its own temperature.
It’s designed not just to cool but also to heat, ventilate, and dehumidify rooms, offering a year-round climate solution.
It’s built with inverter compressor technology (more on that shortly), includes smart app-based control, and comes in various power outputs to suit everything from small bedrooms to large open-plan lounges.
[2] How It Performs: Comfort Meets Clever Tech
Cooling & Heating Performance
This system uses DC inverter technology to vary the compressor speed based on the room’s current temperature.
That’s a fancy way of saying it can scale its power up or down smoothly, avoiding big temperature swings and reducing energy usage.
In Heatable’s tests, a 5.3kW unit brought a 30m² living room from 28°C down to 22°C in under 15 minutes. That’s fast, efficient, and quiet.
And yes, it also heats. When winter rolls in, the unit functions as an efficient air-to-air heat pump, with SCOP ratings of up to 3.8, putting it on par with some dedicated low-temp heating systems.
Noise Levels
This is where the 5000M really shines. Indoor units in silent mode operate at just 19–21 decibels. That’s quieter than a whisper or a library.
The outdoor unit, even at peak, stays under 60dB, meaning your neighbours won’t notice it’s on.
Related reading:
Air Quality & Dehumidification
Every unit includes a high-density filter designed to trap dust, pollen, and odours, removing up to 95% of common household allergens.
It also includes a dehumidification mode, ideal for muggy summer days when your home feels sticky, even if it’s not hot.
[3] Smart Features Worth Talking About
Controlling the Climate 5000M is as easy as scrolling your phone.
With Bosch’s HomeCom Easy app, you can:
Set target temperatures remotely
Activate timers or weekly schedules
Switch between modes (cooling, heating, auto, silent, dehumidify)
Monitor filter status and receive maintenance reminders
You will, however, need to ensure your installer includes the Wi-Fi module (Connect Key G10 CL-1). It’s not always bundled as standard.
🎥 Watch our Bosch Climate 3000i review below:
[4] Real-World Fit: Room Sizes & Flexibility
The 5000M is available in models ranging from 2.6kW to 12.3kW.
That makes it suitable for almost any room size:
2.6–4.1kW units: Best for bedrooms, offices, or box rooms up to ~25m²
5.3–7.0kW units: Ideal for medium-to-large lounges or open-plan kitchens (~30–50m²)
12.3kW systems: Suitable for large homes, retail, or multi-room setups with multiple indoor heads
Each indoor unit is independently controlled, but keep in mind all must operate in the same mode (i.e. all cooling or all heating at one time).
[5] Installation Considerations
Indoor Placement
Indoor units should ideally be mounted 7–8ft from the floor, high on a wall for maximum airflow. Avoid placing them above radiators or in direct sunlight.
Outdoor Unit Location
The outdoor unit should be installed in a shaded, well-ventilated area - on the ground, balcony, or wall-bracketed if needed.
If your home is in a conservation area or listed building, planning permission might be required.
Time & Certification
Installation by an F-Gas-certified engineer is a must in the UK.
Expect 4–6 hours for a standard dual-split install, longer for larger setups.
Cost & Warranty
Pricing varies depending on the model and number of rooms:
Typical Installed Cost: £1,500–£4,000
Running Cost Estimate: A 5.3kW unit running 4 hours/day over a 3-month summer will cost around £250/year at the current UK average of 27.03p/kWh.
Eco Mode Savings: Using Eco mode can reduce consumption by 10–20%
Warranty: 5 years when installed by an accredited Worcester Bosch partner
“It’s the one we recommend for homeowners who want a proper multi-room setup without jumping to ultra-premium pricing. Customers always comment on how quiet it is - and the app control is actually intuitive.” - Patrick Garner, Heatable Installation Manager
[6] The Competition: How It Stacks Up
Feature | Worcester Bosch 5000M | Bosch Climate 3000i | Daikin Perfera | Mitsubishi LN Series |
System Type | Multi-split (1:5) | Single-split (1:1) | Multi or single split | Multi or single split |
Cooling Efficiency (SEER) | 6.1 | 6.1 | 7.4 | 8.5 |
Heating Efficiency (SCOP) | 3.8 | 3.8 | 4.6 | 5.2 |
Indoor Noise Level | 19–21 dB (silent mode) | 21–24 dB | 19–23 dB | 19 dB (whisper mode) |
Smart Control | Wi-Fi via HomeCom (optional) | IR Remote (Wi-Fi optional) | App, voice assistant compatible | App, voice assistant compatible |
Air Purification | High-density filter (95%) | Standard filter | Titanium apatite + streamer | Plasma Quad Plus + deodorising |
Max Rooms Served | Up to 5 | 1 | Up to 5 (with multi split) | Up to 5 (with multi split) |
Typical Installed Costs | £1,500–£4,000 | £1,000–£2,200 | £2,500–£5,000 | £3,000–£6,000 |
Best For | Multi-room UK homes | Single-room cooling | Premium smart homes | High-end energy-efficient homes |
Who Should Buy It
The 5000M is perfect if:
You want to cool or heat multiple rooms without installing multiple outdoor units
You value whisper-quiet operation and smart controls
You trust Bosch’s reputation for reliability and customer support
It may not be ideal if:
You only need to cool one small room (the 3000i might be a better value)
You want ultra-premium filtration or motion-sensor features
You’re on a tight budget and don’t need smart features
[7] Final Verdict
The Worcester Bosch Climate 5000M hits the sweet spot between premium performance and realistic pricing.
It’s not the cheapest option on the market, but it’s not trying to be.
What it offers is quality engineering, low running noise, and flexibility across multiple rooms, all backed by a household brand known for reliability.
If you’re serious about beating the heat (and the winter chill), this unit delivers year-round performance with minimum fuss.
And while the Wi-Fi module should really be standard at this price point, it’s a small compromise for such a capable system.
Want to know if it’s right for your home?
Get a fixed-price quote today and find out how the Climate 5000M can upgrade your comfort in style.
Next Steps For Your AC Journey:
When planning to install air conditioning for your home, there are several important factors to consider. Make sure to refer to the following guides to help you make informed decisions:
To dive deeper into these topics, head over to our advice section, check out our YouTube channel for informative videos.
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