1. Apply Thermal Insulation to Walls & Ceilings Right From the Initial Design

- A good insulation layer will help retain warmth inside and block the cold from outside.

- Use XPS foam, PU foam, or silver-coated insulation panels in walls and ceilings.

- Prioritize materials with low thermal conductivity, high durability, and resistance to mold.

- You can also add an additional layer of MDF wood or plastic wood for a natural heat retention effect.

=> This is a solution that 'costs once, keeps warmth for many years'.
 

2. Use Thermal Curtains for Windows and Doorways

Glass windows are the most vulnerable points for heat loss. You should:

• Attach thick double-layer fabric curtains or thermal velvet curtains to all windows.
• Apply thermal insulation film to the glass (the type that reflects heat in both directions).
• Install windbreaks or rubber strips to seal the door gaps to limit cold air from coming in.
• During the day, open the curtains to let in sunlight to warm the house - close them tightly at night to retain the warmth.
   

3. Using carpets, fabrics, and soft materials to retain warmth

Materials such as fabric, wool, fleece, and felt not only create a warm feeling but also retain heat very well:

• Lay a short-haired carpet on the floor of the bedroom and living room.
• Use thick cotton or fleece sheets and blankets.
• Add decorative pillows, throws, and cushions to help insulate the body from the cold floor/chair.

✅ The space is both warm and enhances aesthetics and comfort.
 

4. Install Suitable Heating Equipment for Small Houses

No need for industrial heating, just keep it warm enough:

• Use a mini heater or an oil heater with a temperature sensor.
• Preferably choose an energy-saving type with a timer function and automatic shut-off.
• Do not use gas stoves or coal heaters in mobile homes to avoid gas poisoning.

Tip: Place the heater near the bed or frequently used sitting area - it warms up quickly and doesn't consume electricity for the whole house.
 

5. Create Small Habits to Help the Body Adapt to Cold

Not only does the house need to retain heat – you also need to keep warm properly.

• Wear multiple thin layers instead of one thick layer (helps the body regulate temperature easily).
• Always wear socks and soft slippers at home – the feet are the largest heat escape points.
• Drink warm ginger tea, hot soup, or use a heat pack to warm up quickly.
• Combine heat retention both inside and out to stay healthy throughout the cold season.