Verified installations • Measured energy savings

Measured before & after heating projects in Uccle & Brussels

Real boiler replacements, heat pump conversions and collective boiler-room upgrades completed in Uccle (1180) and neighbouring communes, complete with measured performance gains.

Heat pump installed beside brick garden wall in Fort-Jaco Uccle

Heat pump • Uccle — Fort-Jaco (1180)

260 m² Villa: Oil boiler replaced by 14 kW air-to-water heat pump

Full replacement of a 1998 oil-fired boiler with a high-efficiency air-to-water heat pump + 250 L hot water tank and power flush of 16 radiators.

Before : Oversized 34 kW oil boiler burning 3,100 L/year (~€3,350/yr), noisy burner.

After : Quiet Daikin Altherma 3 H HT (34 dB at 5 m), hydraulic balancing and full Renolution grant file.

-54% / yrAnnual bill savings

€5,250Renolution grant secured

-6.4 t / yrCO2 reduction

Vaillant ecoTEC plus condensing boiler installed in Churchill Uccle

Condensing boiler • Uccle — Avenue Winston Churchill (1180)

185 m² Townhouse: Vaillant ecoTEC plus + weather compensation

One-day swap of a 22-year-old atmospheric boiler (78% efficiency) for a 1:10 modulating Vaillant ecoTEC plus with outdoor sensor and magnetic filter.

Before : 22-year-old atmospheric unit, high gas bills, uneven temperatures on upper floors.

After : Vaillant ecoTEC plus 30 kW, full PPS flue lining, balancing valve and same-day EPB acceptance.

-28% / yrGas consumption cut

108.4%Measured NCV efficiency

1 dayInstallation time

Insulated hydraulic heating manifold in Uccle Observatoire

Boiler room upgrade • Uccle — Observatoire (1180)

6-unit building: Insulated manifold & variable-speed cascade

Complete overhaul of a shared basement boiler room with insulated distribution header, twin variable-speed pumps, air separator and zone metering.

Before : Corroded steel piping, cellar heat loss reaching 28°C, power-hungry fixed-speed pumps.

After : Insulated manifold, Class-A modulating circulators, zone control and 100% EPB compliance.

-72%Pump electricity cut

-65%Basement heat loss

100% passedEPB compliance

Flue gas combustion check on Viessmann Vitodens in Ixelles

Condensing boiler • Ixelles — Châtelain (1050)

Apartment building: Cerga gas compliance & Viessmann Vitodens

Installation of 2 Viessmann Vitodens 100-W wall-hung boilers with Cerga-certified gas pipework and compliant concentric flues.

Before : Non-compliant gas lines flagged by Sibelga, chronic pressure drop on top floor.

After : Immediate Cerga compliance certificate (no external inspector delay), gas supply restored in 24h.

24 hoursGas meter reconnection

-24%Heating savings

5 yearsManufacturer warranty

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