DHW projects that guarantee comfort, efficiency and compliance
We design facilities for the production, storage and distribution of domestic hot water that ensure thermal comfort, indoor air quality and controlled energy consumption, complying with all current regulations.
End-to-end DHW
We develop complete projects for sanitary hot water systems for new construction and rehabilitation, covering everything from production to distribution.
Solar thermal
Dimensioning of thermal solar fields (flat or vacuum tubes) with integration into the accumulator tank and energy support. Compliance with EN 12975 and DL 58/2013.
heat pumps
Selection and sizing of air-to-water and geothermal heat pumps for DHW, with integration into hybrid systems and solar support. COP optimization and seasonal performance.
Boilers and accumulators
Condensing gas boilers, insulated storage tanks, coils and thermal stratification systems to maximize efficiency and autonomy.
Distribution and recirculation
Thermally insulated networks, recirculation rings with controlled recirculation pumps, thermostatic mixers and hydraulic balance of the network.
Protection against Legionella
Installation design according to EN 806-2: minimum storage and distribution temperatures, thermal shock, dead spots eliminated, sampling valves.
Efficiency and retrofit
Energy retrofit of existing DHW systems: replacement of water heaters with heat pumps, installation of solar thermal, consumption reduction of up to 70% in rehabilitated buildings.
How we work
From requirements analysis to commissioning, we follow a rigorous and documented methodology.
Requirements gathering and analysis
We met with the developer, architect and other designers to understand the functional program and conditioning of the building.
Hydraulic calculation and sizing
Calculation of consumption (hourly profile and simultaneity), accumulation volumes, production powers, thermal losses in the network and hydraulic balance.
Project development
We prepare the execution project: DHW principle diagrams, network layouts, insulation, deposits, solar/heat pump integration, recirculation and written parts.
Work support and review
We monitor the execution: we check network insulation, location of deposits, connections to solar thermal/heat pump and compliance with the project.
Commissioning
We participate in the reception tests of DHW systems, checking outlet temperatures, flow rates, recirculation, solar/heat pump performance and protection protocol against Legionella (EN 806-2).
Full compliance
What you gain with Afazeres Curiosos
Hot water always available
Systems sized for the building's actual peak consumption, with adequate accumulation and recovery — without failures at peak times.
Reduced energy consumption
Solar thermal + heat pump can cover 70–90% of a home's annual DHW needs, with payback typically between 7–12 years.
Regulatory compliance
The project complies with all current legal diplomas, facilitating licensing and energy certification.
Integrated coordination
By also designing electricity, telecommunications and Fire safety, we avoid conflicts between specialties that generate delays and additional costs.
Do you need a reliable and efficient DHW system?
Contacte-nos em geral@afazerescuriosos.pt e receba uma primeira análise ao seu projeto, with no obligation.
Request ConsultancyDo you need MEP engineering?
No-obligation quote in 48h. HVAC, electricity, telecommunications, fire safety, inspection and audits.