An integrated assessment of the envelope, heating systems, ventilation and energy use, designed to improve comfort and reduce operating costs.
The home uses a direct-combustion natural-gas boiler connected to hydronic emitters. The owner reports a sharp increase in monthly costs whenever heating use is extended to achieve comfortable indoor temperatures.
The assessment considers 21 °C at night and a minimum of 18 °C during the day, while making use of daylight and passive solar gains whenever orientation and occupancy allow.
The retrofit is phased to avoid oversizing equipment and ensure every investment contributes to the final result.
External and/or internal insulation to walls, roof and ground-contact areas, using EPS, XPS, cork or mineral wool according to each element.
PVC multi-chamber frames or thermally broken aluminium, low-emissivity double glazing and solar control selected by orientation.
Centralised or decentralised MVHR with over 85% heat recovery to reduce condensation, odours and dark staining.
Replacement of the boiler with a low-temperature heat pump sized after the building heat demand has been reduced.
Retain radiators where feasible or progressively replace them with fan-coils to improve efficiency and enable cooling.
Scheduling, zoning and use of passive solar gains to reduce energy demand without compromising comfort.
These figures represent a preliminary scenario based on the energy records provided, the building age and comfort assumptions. A final proposal requires a dimensional survey, envelope assessment, thermal-bridge review, emitter verification, tariff analysis and heat-demand simulation.
XConcreto prioritises technically and financially justified solutions, avoiding equipment replacement before the building's behaviour is understood.
We prepare an initial assessment with investment estimates, consumption comparison and a phased plan tailored to the building's priorities.
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