Heating For our room? Non eletrical, any ideas?

Question

Our family lives in Brazil and every so often it gets very cold, and since the houses are made of cement it is freezing inside, and lots of covers just dont seem enough for one or two weeks a year. We had baught a couple of heaters but they are eletrical, and when we plug those in all the lights go in our house since they use too much energy.

Does any one know or have ideas for Non- Eletrical heating systems?

That wouldnt be extremely expensive?

all the lights go out*

Answer 1

Some tips
• Open blinds and curtains during the day to let the free heat of the sun in - up to 3 kWh of heat per square metre of window can be let in per day, which is equivalent to a single bar radiator running for 3 hours
• Close curtains and blinds at night to keep the heat in - curtains with fitted pelmets are the most effective for this purpose
• Block off unused open fireplaces to prevent heat escaping
• Install draught excluders on doors and windows and seal all gaps to the outside
• Grow deciduous trees or vines on a pergola on the north side of your home to let the heat of the sun filter through windows
• Heat only the rooms you are using by closing doors to unheated areas*
• Use electric blankets in preference to room heaters in bedrooms and switch off after getting into bed
• When purchasing a new heating system choose the most energy efficient model for your needs.
*Unflued gas and kerosene heaters should not be used in closed off rooms as they require proper ventilation. They must never by used in bedrooms or bathrooms.

Answer 2

propane or natural gas wall heater they make vented or ventless

Answer 3

yea, you could get a portable propane heater.
http://www.jamestowndistributors.com/userportal/show_product.do?pid=806&familyName=Indoor+Propane+Space+Heater