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. In the winter most energy goes to heating your house. 

• Solution: 

  • High RC 7.5+ insulation

  • Heating with a 94% efficient Pellet stove
  • Air/Air heat pump on standard tempature of 18 degrees celsius 

• Heating system advantage;

  • 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, air heating & cooling 
  

Energy

• Solar panels: external 15kwp per Dutch-Hangar House or integrated solar roof seam roof. 

• Storage 30, 40 or 50kWh home battery.
  

• Winter backup: Propane gas generator that recharges the battery from 20% tot 80% 

  • 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 but a few weeks a year not just enough to completely depent on the battery. 
    

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

• Efficiency: Overall this is Minimal gas or wood/pellet consumption for heating and with minimal usage of the generator as power backup to supply the battery.

• Additional for extra electric demand, we have an alternate Hydrogen option to boost a 400 kva energy for powering more hangar houses at once or for accomodating electric fueling for electric aircraft. This is services by a truck which is fueled by its own system and when stationaire it becomes a generator for producing electricity. 

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 via the heatpump floor heating/ summer cooling. 

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.