EPC Analysis
We detect where your EPC may be overly conservative and help you validate it with a certified energy expert.
We detect where the EPC may be overly conservative.
A certified energy expert can then validate and optimize.
Potential
80 kWh/m²
Solar optimization
Heat pump
EMS – absence control
Renovation premium
up to €7,500
from D → A label
Actual Consumption
320 kWh/m²
Air tightness
Insulation
System efficiency
Ventilation losses
Avoid renovation obligation
+€10,000
sale value
EPC Certificate
480 kWh/m²
From EPC estimate to evidence in 4 steps
Measure and validate first — invest after. Often your EPC label improves without moving a single brick.
Compare calculated vs. measured consumption
We place the EPC figure (kWh/m²) next to your actual measured use. The gap — the performance gap — shows where EPC may be overly conservative.
Performance gap: EPC often predicts ~3× more consumption than what is actually measured.
Evaluate whether better evidence is worth it
Without evidence, EPC always assumes the worst case (e.g. v50 = 12 m³/h·m², minimum insulation values). We detect where mapping insulation or airtightness more accurately can improve your label — without any investment.
Improve insulation or airtightness
Only when evidence isn't enough, renovate — and do so targeted. You avoid investments that barely move the label.
Install solar and heat pump
Close with generation and electrification, sized to your real consumption rather than EPC assumptions.
What does Arion do?
Our output tells you whether better evidence can close the performance gap between reality and calculation.
If documenting actually-installed insulation or a blower-door test yields better values, they can be used in your EPC — improving your label without any investment.
Furthermore, solar and heat pump can be sized on your real consumption instead of conservative EPC defaults.
This way, your actual consumption can be used to size an EPC simulation based on real use — instead of relying on standard profiles.
Renovation loan up to €60,000
Investments in insulation, solar panels and heat pumps can be financed via a renovation loan up to €60,000, at a rate of 0 to 1.5%.
Why EPC structurally deviates from reality
UGent research: 60% of EPCs underestimate actual efficiency. The chart below shows the difference between actual (measured) and characteristic (predicted) energy consumption per EPC class.
What does this chart show?
The green boxplots show actual measured consumption per EPC class. The red boxplots show characteristic (calculated) consumption according to the EPC certificate. The blue line at 400 kWh/m² is the renovation threshold (E/F boundary).
The core of the problem
Even homes with an EPC label E or F (characteristic 450–600+ kWh/m²) have an actual median consumption of only 135–155 kWh/m² — well below the renovation threshold. If we used effective consumption as the benchmark, there would be virtually no renovation obligation in Belgium as long as 400 kWh/m² remains the threshold.
What Arion8 does
We measure your actual consumption for 12 months via the digital meter. This data provides evidence that your home is more efficient than the EPC indicates. A certified EPC expert can use this report to refine the certificate with real values instead of conservative default assumptions.
Source: UGent — Evaluation of the difference between theoretical and actual energy consumption in Belgian homes.
We detect where the EPC may be too conservative.
A certified energy expert can then validate and optimise.
EPC Certificate
Actual Consumption
+€10k
sale value
Potential
€7.500
Renovation subsidy
Potential
Solar optimisation
Heat pump
EMS – absence detection
Renovation subsidy
up to €7,500
from D → A label
Actual Consumption
Air tightness
Insulation
System efficiency
Ventilation loss
Avoid renovation obligation
+€10.000
sale value
EPC Certificate
Arion8 EPC validation and savings: Data instead of estimates
From estimate to proof in 3 steps.
Annual report
Based on your digital meter data, we analyse your actual consumption.
Jackkie installation
Our multi-protocol gateway reads your Fluvius meter and submeters.
Automatic shutdown
During absence, consumption is automatically reduced: 10-30% lower usage.
Pools, EVs, batteries excluded via submeters
15-minute data from your digital meter
Accepted by notaries and banks
Delivered within 5 working days
What does this mean for you?
Sell your house for €30,000 more
An EPC label B vs. D means an average 12% difference in sale price. Our report proves your house performs better than the label indicates.
Real-world results
Family with pool · Antwerp
D (320 kWh/m²) → B (140 kWh/m²)
ventilation losses much lower than theoretical calculation
House sold for €45,000 more than expected
Apartment · Ghent
E (450 kWh/m²) → C (180 kWh/m²)
old heating, but good insulation
No renovation needed, €800/year saved on unnecessary investment
House with 2 EVs · Bruges
C (250 kWh/m²) → A (90 kWh/m²)
EVs counted as residential consumption
Mortgage rate 0.2% lower thanks to better energy label