Your Cosy Heat Pump - Now on display
No phone. Not hidden within app menus.
Just heating the whole household can see.
Even the housesitter!
Open for orders • First batch: End of March
No phone. Not hidden within app menus.
Just heating the whole household can see.
Even the housesitter!
Open for orders • First batch: End of March
The heart of your heating system. It's the data source for everything on your display—your whole home's temperature intelligence in one device.
Room-by-room temperature monitoring. Each pod sends real-time data so you know exactly what's happening in every zone.
Shows heating status, boost timers, zone temperatures, defrost cycles, and live performance - all at a glance on a beautiful 5″ round screen.
Instant visibility into whether your heating system is running, with live performance metrics.
See when boost is running and exactly how much time is left before your system returns to normal.
Display all your room temperatures and setpoints in a clean, easy-to-read interface.
Monitor defrost activity so you understand your heat pump's maintenance cycles.
Don't worry, it's not smoke coming out..!
Real-time efficiency metrics and system performance insights at your fingertips.
Wall-mounted simplicity. Check your heating without unlocking your phone—it's all right there.
A visual tour of the Cosy Display in different modes and panels.
Displayed when the heat pump is inactive. Confirms the system is standing by and not consuming energy unnecessarily.
Shows both heating zones simultaneously for homes with dual-zone systems. Each zone’s status is visible at a glance.
Shown when a manual boost is active. A clear countdown timer shows how long remains before the system automatically returns to schedule, with an option to stop early.
Appears during automatic defrost cycles. This reassures you the system is operating normally — it’s not a fault, and heating will resume once the cycle completes.
Highlights when the system reports a fault. Designed to surface important information clearly, without needing to dig through an app.
Waiting for user input to activate Boost on the single heating zone.
Adjust brightness, configure settings, or perform a factory reset.
Live and daily metrics including COP, outdoor temperature, heat input/output, and visual charts of system performance.
View and manage your daily heating and hot water plans.
Adding a new schedule entry to manage heating and hot water.
System details, faults, flow/return temperatures (requires additional Cosy Hub sensor integration), and charts of flow temperature and flow control settings and expected flow temperatures. Note: When using fixed temperatures, this will show your fixed flow temperature values.
Watch the Cosy Display in action. These short clips show real interface interactions and live updates.
Triggering a boost request and watching the countdown timer update in real-time.
The display showing a live defrost cycle with current zone targets.
Managing boost on multiple zones with independent timers and status tracking.
Real-time efficiency metrics and system performance updates as you view them.
Creating and modifying heating schedule entries directly on the display.
Smooth scrolling through your weekly heating schedule with touch-friendly controls.
Everything you need to go from box to wall in minutes.
Early January 2026
Mid January 2026
January - March 2026
Early March 2026
End of March 2026
⭐ First batch limited intentionally
We're starting small to get everything right and provide hands-on support for each customer, with us delivering to you in person (South West / Midlands area only). Expect expansion after this initial release.
Just like Home Assistant, the Cosy Display is a local-first device. Once it's in your hands, we have zero visibility into your energy usage or routines.
Your heating habits are your business, not ours.
Not entirely, but it provides a better experience for the most common use case: seeing your heating status at a glance. The app gives you control and detailed settings; the Cosy Display gives you instant visibility without reaching for your phone. Think of it as a dedicated heating dashboard rather than a replacement.
No. The Cosy Display is a maker's project built by an enthusiast to solve a real problem in the Octopus Cosy community. It's not affiliated with or endorsed by Octopus Energy, but it facilitates your use of their publicly available API. We're operating transparently, with no hidden agenda - just removing friction between your household's heating control.
Good question. We monitor their API carefully and are identifying the feasibility of keeping the device firmware updated. That said, Octopus may deprecate certain API functionalities, but rarely removes them entirely.
Yes. The Cosy Display is designed to work seamlessly with both single-zone and dual-zone heat pump setups. During the setup, you can select dual-zone or single zone configuration and the device will display the relevant zones, setpoints, and boost controls for your specific system.
Yes, it needs WiFi to fetch real-time data from Octopus Energy's API. However, there's no cloud dependency—your display connects directly to Octopus Energy. If your WiFi drops, the device will stay in its last known state and reconnect automatically when the network returns.
For out-of-the-box installs, Octopus does not expose heat pump flow or return temperatures via their API. The Cosy Hub includes four ADC inputs, one of which is used for hot water cylinder sensing.
A 10K NTC 3950 Waterproof Temperature Probe can be connected to the Cosy Hub to measure your flow or return pipes. Once installed, these readings can be displayed on your Cosy Display to show live flow and return metrics.
Note: We do not take responsibility for the installation of additional temperature sensors.
Absolutely. The Cosy Display is local-first, just like Home Assistant. Your API keys are stored on the device itself, not on our servers. We have zero visibility into your heating patterns or energy usage. The device talks directly to Octopus Energy—no middleman, no cloud, no tracking. Your heating habits are your business.
The display will show clear visual indicators for faults (with error codes if available) and defrost cycles. You'll see exactly what's happening, when it started, and how long it's expected to last. This transparency removes the confusion around normal heat pump behaviour like defrosting and helps you spot real issues quickly.
Two simple steps: join the waiting list now, then pay your deposit when manufacturing begins.
Secures your place in the first batch
Paid when your unit ships
Total: £300 for a complete, integrated smart home display
First batch limited to ensure quality. Delivery includes integration support.
No payment required to join. Just let us know you're interested, and we'll be in touch when it's time to secure your unit.
Stay informed about manufacturing progress, features, and shipping milestones.