Dutch-Houses // Hangar Houses

Off-grid Concept Dutch-Hangar Houses

What does offgrid mean?

Offgrid is often associated with primitive living, but in our case it means:

• Independence from the slow pace of governments and utility companies.

• Immediately habitable and reliable upon delivery.

• No concerns about power outages or water shortages.

• Maximum flexibility and independence.

The main reason: when building the first Model Hangar House, no public utilities are available. A self-sufficient and robust system is therefore essential.

Water

• Rainwater storage: Each Hangar House is equipped with a 20,000-liter underground tank.

• Purification:Water is filtered for use in the kitchen, shower, and washing machine.

• Reuse:With a Hydraloop system, greywater (from shower/washing machine) is purified and reused for toilet flushing → 45% water savings.

• Discharge:After toilet use, wastewater flows into a septic tank for further purification. The effluent can safely be discharged into surface water.

• The side advantage is, that we use the water storage as energy carrier to feed the heat pump which benefits winter as summer. 

Sustainable, environmentally friendly, and independent of restrictions such as irrigation or washing bans.

Septic tank / Sewerage

• Connecting to the municipal sewer system is impractical (1 km pipeline with potentially low pressure).

• Solution:Biorock system, suitable for both small and large-scale use.

• Maintenance: only once every 3 years.

Heating

• Heating with electricity is not feasible offgrid in winter.

• Solution: One main Propane gas in tank for all Dutch-Hangar Houses

  • Main gas tank with individual connection to the local grid
    

• Heating system: Low-temperature under floor heating.

  • Energy-efficient and comfortable.

  • Less heat loss thanks to the penthouse located above the hangar.

• Hot water: Provided by a heat water boiler or a quick electric flow-through heater.

• Or usage of Heat pump which supplies 180L warm water, floor heating, air heating & cooling 
• Extra supplemented heating can be arranged by hybride wood/pellet stove. 

Energy

• Solar panels: external 8–10 panels per Dutch-Hangar House or integrated solar roof seam roof. 

• Storage:5–30 kWh home battery.

• Energy feed from the underground 10kw energy from water storage 

• Winter backup:Propane gas/diesel or gasoline generator that recharges a 30 kWh battery in approx. 2 hours.

  • In practice, needed only once a week with a 7.5 kWh usage per day since the solar panels would deliver some energy in winter

  • Generator can be shared between 2  Hangar Houses.

  • Most energy goes to heating the house, meaning the hybride wood/pellet stove could be the substitute for gas 

• Efficiency:Minimal gas or wood/pellet consumption for heating with the generator as power backup.

Cooling

• In summer, a split air-conditioning unit can run on solar energy also connected to our underground water tanks 

• Battery surpluses can be used efficiently for cooling and comfort.

Conclusion

The Hangar House offgrid system provides:
✅ Immediate usability upon delivery.
✅ Independence from governments and utilities.
✅ Reliable water and energy supply all year round.
✅ Sustainable, environmentally conscious, and future-proof.

✅ Monthly energy prices stay low and the same for years to come.