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Affordable and social housing

the premium system pays back fastest where budgets are tightest

In affordable housing every euro of energy saved goes straight to the household. Bisly is a high-end system, but its cost is a fraction of a renovation budget — and the savings start in the first heating season.

Reference case

A renovated 40-apartment building

3.1 yrs

payback

Bisly reference case

€6.1k

saved per year

2,975 m², B-class after renovation

1.2%

of the renovation budget

Bisly equipment

~30 min

per apartment

Bisly Wireless installation

Figures from the Bisly Wireless overview. Every building is calculated from its own consumption.

Why it fits

Six reasons housing providers choose it

01

Lower bills for households

Room-level control saves about 10%; with hydronic balancing about 21% in field studies.

02

Fair billing by consumption

Remote-readable heat, water and electricity meters per apartment, with monthly information — the 2027 EED requirement.

03

Residents stay at home

Wireless retrofit: about 30 minutes per apartment, nothing drilled, no ceilings opened.

04

Fewer technician visits

Alarms name the room; silent sensors and stuck valves are found remotely before tenants complain.

05

No smartphone required

Wall controllers work on their own; the app is optional. Accessible for every resident.

06

One standard for the portfolio

The same package in every building, managed from one login, with energy and indoor air ranked per building.

Where the savings come from

Savings compound with every layer of control

  1. Smart radiator thermostat on its own

    EDF / Vestemi, Radbot Smart TRV, Ofgem 2022

    ~3%

  2. Room-level control across the building

    Cholewa, Siuta-Olcha & Balaras, Energy and Buildings 151, 2017

    ~10%

  3. Room control plus hydronic balancing

    Same study, same buildings

    ~21%

  4. Plus forecast-based plant control

    A further 11–13%: Cholewa et al., Energy and Buildings 292, 2023

    +11–13%

  5. Full Bisly stack, 30+ schools and public buildings

    Bisly portfolio, 20–35%

    20–35%

% energy saved

Estimate

What it could save in your building

Two inputs, three scenarios. The result is indicative and based on the cited studies.

What room-level automation saves in an apartment building

  1. Room-level control

    ~10% · Cholewa et al. 2017

    €4,400

    per year · €9 per apartment per month

  2. Room control plus hydronic balancing

    ~21% · Same study

    €9,240

    per year · €19 per apartment per month

  3. Full Bisly stack

    Range 20–35% · Bisly portfolio

    €8,800–15,400

    per year · €18–32 per apartment per month

Indicative. Savings are taken from the cited studies and Bisly references, not guaranteed. We calculate your building from its real consumption.

Funding and finance

Data that helps fund the next project

  1. 01

    Measured savings

    Before-and-after data per building supports subsidy files and energy-renovation programmes.

  2. 02

    Green finance

    Measured CO₂ data per building and per m² supports green loans and PCAF reporting.

  3. 03

    Compliance

    Monitoring, metering and indoor-air functions the EPBD and EED require — documented.

Questions

Housing questions

Is building automation worth it in social housing?

Yes, often more than in premium housing, because heating is a larger share of household costs. Field studies show about 10% savings from room-level control and about 21% with hydronic balancing; Bisly reports a 3.1-year payback on a renovated 40-apartment building, with the equipment at 1.2% of the renovation budget.

Do tenants have to move out during installation?

No. With Bisly Wireless the installation takes about 30 minutes per apartment, without drilling or opening ceilings.

How does it help with the 2027 metering rules?

Under the Energy Efficiency Directive, heat meters and heat cost allocators must be remotely readable by 1 January 2027, with monthly consumption information. Bisly reads wired and wireless M-Bus meters per apartment and exports billing-ready data.

What if a resident has no smartphone?

The wall controller in each apartment works on its own. The app is an option, not a requirement.

Calculate one building with us

Send last year's consumption and the drawings; we return the savings, a proposed solution and its budget.