How is it treated in SAP assessments?

Elmhurst Energy has published a guidance note for assessing the Climate Wall in SAP 10.2, SAP 10.3 and RdSAP. It covers how to enter the system, cooling and heating controls, and the photo evidence assessors need. Download it from the specs section above.

Does it meet building regulations?

Part L (conservation of fuel and power): it’s designed to comply, and independent EN testing is scheduled, with results published here once complete. Parts O and F (overheating and ventilation): it helps you meet them, removing excess heat with the windows shut and bringing fresh air into every room it serves, from the same unit.

Does it help with Awaab’s Law?

Yes. Steady warmth and constant air change tackle condensation at the cause, all year. From 30 November 2026 the law extends to excess cold and excess heat, and one unit covers both. Every unit logs temperature and humidity room by room on the Landlord Dashboard, so the evidence trail builds itself before a complaint does. Phase 1 has been in force since 27 October 2025 for the social rented sector in England.

What does installation involve?

Two holes through an external wall, a mounting bracket and a standard 13A socket. There’s no refrigerant on board, so no F-gas engineer is needed, and a trained installer can have a room done in hours. We’re building a network of Anzen-trained installers and run training programmes for new ones.

Does it need planning permission?

There’s no outdoor unit, so in most homes planning permission isn’t needed. Listed buildings and conservation areas may need consent for the two external grilles, and leasehold flats usually need the freeholder’s consent for wall penetrations. We check this with you at survey.

Which homes suit it best?

Flats, maisonettes, terraced houses and other space-constrained homes get the most from it, but any building type can benefit. All a room needs is an outside wall and a normal socket. The same unit serves student blocks, HMOs, hotels, care settings, heritage terraces and conversions.

Is it quiet enough for a bedroom?

Yes. It runs at 30–40 dBA, comfortable enough to sleep beside.

Does it cool in summer?

Yes. Built-in cooling takes the edge off hot rooms, and fresh air keeps moving all year.

What maintenance does it need?

Very little. The filters are designed for easy access, and the casing is tamper-resistant. Full warranty terms come with your quote.

What if a unit breaks?

It’s designed for easy repair, and Anzen-trained installers can attend. Every room runs independently, so one fault never means a cold home, and the app flags issues early.

Does it work with solar and batteries?

Yes. There’s no battery or heat store inside, but schedules are fully customisable, so it pairs well with home solar and battery systems.

Do you offer trade or volume pricing?

Yes: tiered pricing for portfolios, projects and trade accounts. Send us your unit count and project details and we’ll take it from there.

Pre-orders are open now for UK installs in 2027, and early orders get the first production slots. Tell us your timelines when you pre-order.

I’m an installer: how do I get certified?

Anzen runs installer demos and training. Technical staff learn to install and service the system, and certified installers join our on-call network. Contact us if you’re interested.

PRE-ORDER

The Climate Wall

Beyond Comfort

Refrigerant-free heating, cooling, and ventilation, all from one indoor unit

FIND OUT MORE

SUPPORTED BY

PAUSED

Millions pay a premium for freezing, stuffy, overheated homes

THE ANZEN WAY

Anzen Climate Wall

Heating, cooling and fresh air from the same wall and the same socket.

Heating, cooling and fresh air in one unit

Comfort cooling in summer

Full control from the Anzen app

No outdoor unit

THE OLD WAY

Electric panel heater

One watt in, one watt of heat out. Nothing for summer, nothing for the air, everything on the bill.

Costly direct electric heating

No cooling in summer

On or off with no smart control

No ventilation

Undenied comfort for the most denied homes

More efficient than the heaters it replaces, comfortable through hotter summers, and bringing in filtered fresh air every day.

Installs in hours, not weeks

Two ducts through an external wall and a standard 13A socket. No plumbing, no outdoor unit.

INSTALL

2 duct holes · 13A socket · Installed in hours

MODE

Heating, cooling and fresh air

Warmth in winter, cooling in summer, filtered fresh air all year.

Every room at its own temperature

Keep bedrooms cool and living rooms warm, and stop paying to heat rooms nobody’s in.

LIVING ROOM{{ livTemp }} · {{ livMode }}

BEDROOM{{ bedTemp }} · {{ bedMode }}

Climate Wall with occupant and landlord app screens

Intuitive controls

Schedules, modes and temperature controls in the Anzen app. Landlords see every unit across every property in one dashboard.

WHY IT WINS

It fits where nothing else does

Installs in hours, not weeks

Two ducts through an external wall and a standard 13A socket. No plumbing, no outdoor unit.

INSTALL

2 duct holes · 13A socket · Installed in hours

Heating, cooling and fresh air

Warmth in winter, cooling in summer, filtered fresh air all year.

MODE

Every room at its own temperature

Keep bedrooms cool and living rooms warm, and stop paying to heat rooms nobody’s in.

LIVING ROOM{{ livTemp }} · {{ livMode }}

BEDROOM{{ bedTemp }} · {{ bedMode }}

Intuitive controls

Schedules, modes and temperature controls in the Anzen app. Landlords see every unit across every property in one dashboard.

The next gen HVAC leaves no home behind

1 kW

HEAT OUTPUT

25 m³/h

VENTILATION

Hours

INSTALLATION

30–40 dBA

SOUND LEVEL

Where can the Climate Wall be installed?

From a single flat to a whole building, anywhere with an external wall and a socket.

Electric-only flats

Swap storage and panel heaters for heating, cooling and fresh air in one unit. A clear EPC pathway, assessed in SAP and RdSAP.

Shared houses and HMOs

Every tenant controls their own room, and you see every unit, schedule and alert in one dashboard.

Studios, offices and retail

Heating, cooling and fresh air for small spaces, with nothing on the frontage. No scaffolding, installed in hours.

Student accommodation

Room by room installs, managed from one dashboard. Continuous fresh air helps keep damp and mould down.

Care homes

Steady comfort and continuous fresh air in every room, with no refrigerant and no outdoor plant.

Hotels

Guest-controlled comfort in every room. No scaffolding or outdoor unit, so rooms are back in use within hours.

The journey

2021 to 2026

2021

Origin of Anzen

A Stanford Longevity Design Challenge finalist set the mission: healthier indoor climates, engineered into the building.

Origin of Anzen

2024

The wall-integrated climate system

Heating and heat-recovery ventilation came together in one prefab system — no plant room, pipework or outdoor unit.

The wall-integrated climate system

2024

Designed for the flats others skip

The first retrofit design for space-constrained flats: a ducted layout behind a radiator-style front plate, with hidden vents for a seamless look.

Designed for the flats others skip

2025

First pilot, first proven prototype

A live prototype at Park Royal ran through a full winter, testing solid-state heating and cooling in a real home.

First pilot, first proven prototype

2026

V1.5, built and measured

Assembled in a contract facility with functional hardware and landlord software, then measured in a real home across a full winter.

Assembled in a contract facility with functional hardware and landlord software, then measured in a real home across a full winter.

V1.5, built and measured

FAQ

Anything not covered here, our technical team will answer in writing within two working days.