Energy efficiency and energy saving: audit, passive and active house

Developing an energy-saving programme is a fundamental step toward cutting the running costs of a private house, an apartment block (housing co-op), a public building or a working industrial facility. AkvilonPro carries out a professional energy audit, builds a precise digital energy model of the object and produces a step-by-step investment plan with a forecast of savings and payback periods.

Every measure is ordered by economic logic: from zero-cost, fast-payback steps (tuning automation, balancing systems) to capital investment (upgrading the envelope, alternative generation).

Data collection, instrumental audit and energy modelling

We run a full retrospective analysis of consumption across past heating and summer periods for every energy carrier (electricity, gas, district heat). With professional equipment — facade thermal imaging and an airtightness check of the envelope — we pinpoint heat-loss spots and the building's deviation from the norms.

Upgrading gas use

• Servicing or replacing outdated boilers with condensing units of up to 108% efficiency.
• Hydraulic balancing of the system and weather-compensated controls.
• Room-by-room (zoned) temperature control.
• Thermal insulation of main pipework and fittings.
• For new builds: we integrate the most economical solutions into the design at the concept stage — no future rebuilding.

Cutting electricity use

• Switching to high-efficiency LED lighting.
• Occupancy, motion and light sensors.
• Variable-frequency drives (VFD) on pumps and ventilation — critical for industry and residential pumping stations.
• Reactive-power compensation.

Thermal modernisation (for buildings on district heat)

• Full insulation of walls, foundations and roof, eliminating cold bridges.
• Sealing leaks in joints, reveals and junctions.
• Replacing windows with profiles holding double-chamber multifunctional argon-filled glazing.
• Supply-and-exhaust ventilation with heat recovery (returning up to 80% of the heat).

Industrial solutions and alternative energy

• Waste-energy recovery: heat from flue gases, equipment cooling systems or wastewater.
• Bioenergy and cogeneration: for agri-complexes, a feasibility study of turning production waste (biomass, husks, manure) into heat and power via cogeneration units.
• Renewables: a feasibility calculation for solar stations (PV), solar thermal and heat pumps, with payback schedule and service costs.

Financial planning and ROI

The final section is a clear financial map of the project: the option of external funding (loans, grants, ESCO schemes), a balance of the client's own resources and a visual savings diagram with the exact return on investment (ROI) for each measure.

A new build: from Passive to Active House

For a new building, energy efficiency is the cornerstone of the concept. We take the Passive House standard as the benchmark for energy saving, and assess overall quality of life and ecological balance with the Active House Radar — a circular diagram of the balance between efficiency, comfort and sustainability across 9 parameters:

1. Daylight: a daylight-factor calculation for each room.
2. Thermal comfort: a heat balance without overcooling or overheating, with minimal active systems.
3. Air quality: CO₂ control, no dust or volatile organic compounds.
4. Minimum energy: reducing demand for heating, ventilation, cooling and lighting to a minimum.
5. Renewables: the share of the home's own "green" energy from sun and wind.
6. Minimum CO₂: minimising the operational carbon footprint.
7. Material ecology: the embodied carbon from extraction to delivery.
8. Circularity: materials from recycled stock and structures that are easy to dismantle and recycle.
9. Water economy: rainwater harvesting and grey-water reuse.

The radar shows the client clearly how close the object is to the ecological ideal and lets solutions be adjusted at the concept stage.

If you need a clear plan to raise the efficiency of an existing building or to design an energy-efficient project from scratch, contact us via the feedback form or by phone +380503582282 (Viber), +380975153839 (Telegram).

The head of AkvilonPro's energy-efficiency department, Pavlo Biryukovich, is a Certified Passive House Designer and Certified Passive House Tradesperson in the Passive House Institute register. [email protected]

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