Hey!
I was just wondering in a home, where would the main loss of heat or energy be and how could I stop this..? Thanks!
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Depens on the home.
Heat is transfered into and out of the building by transmission (conduction and convection) through walls, windows, doors, perimeters, ceilings, slabs, floors and skylights. Then there is heat gain/loss due to infiltration, ventilation, exhaust and combustion vents.
How can you stop all this heat loss? Seal leaks, insulate ceilings (heat loss through the ceiling/roof/attic is usually one of the bigger portion in an "average" house), walls, floors and foundation walls. Use good, insulated windows. Use sealed combustion appliances where possible. On direct-vent (i.e. those that take combustion air from the room and vent through gravity type flues) appliances, have combustion air fed via automatic, damper controlled supply ducts, that are closed when not needed. Get an energy recovery ventilator to provide fresh air to the house.