Mobile homes are not known for being the warmest places in the winter because of their metal construction and lack of insulation. For this reason, most mobile home residents have a supplemental heating system installed to help with keeping the place warm.
If you do find that your mobile home is colder than it should be during the cold winter months, there may be several reasons why this is happening.
The structure may have an inadequate amount of insulation, allowing heat from inside to escape easily through gaps between walls and windows where they come together.
Inadequate ventilation can cause these spaces to become drafty as well, forcing additional heat loss out through cracks around windows and other openings in the structure.
The lower level of insulation also will cause your heat source to have to work harder to maintain the temperature you want.