Replies

1. GBA Editor
   Martin Holladay|Jan 23, 2015 06:45am|#1

   Rahul,
   Every house has a building envelope. Some houses have a leaky envelope, and others have a tight envelope, but every house has a building envelope. So I'm not sure what you mean when you say that you have "decided to go for a building envelope."

   If you want to determine how much energy you will save by implementing an energy saving measure, you have to use an energy modeling program. In a house with a leaky, poorly insulated envelope, the amount of energy used for space heating and cooling usually dominates, and appliance energy use is less important as a percentage of total energy use.

   In a house with a tight, well insulated envelope, appliance energy use and domestic hot water represent a much higher percentage of total energy use.

2. Expert Member
   Dana Dorsett|Jan 23, 2015 10:32am|#2

   Aapka naam desi naam hain. Is this house in (or going to be in) south Asia, perhaps? Local climate and local costs for energy, materials, and construction are necessary for making these design considerations.