Overview
Internal loads in a home are from three broad categories:
Occupants (the people in the home)
Appliances (stove, dishwasher, TVs, etc)
Lighting or other small plug loads
Plants
Only occupants and plants add both sensible and latent cooling loads to the building.
Note: Internal loads in Amply are only considered at the building level or block level of the home. They cannot be allocated to individual rooms in the building. If you require custom scenarios where you may have some internal loads in a kitchen and some other internal loads in another part of the building, you can use the details below to make those adjustments manually.
Occupants
As part of the Manual J protocol, the number of occupants that should be assumed in the home is based on the number of bedrooms + 1. I.e. If a home has three bedrooms, the assumed number of occupants is 4.
The number of occupants should reflect the people who are living in the home long-term.
Note: Do not add extra occupants for rare scenarios like parties or gatherings in a home, as this can dramatically skew the load calculations and lead to oversizing the cooling system.
Appliance Scenarios:
1200 BTUh: Assumes a basic kitchen setup - just the main refrigerator and range, plus a vented range hood. No additional appliances or significant lighting loads accounted for.
2400 BTUh [Default]: Refrigerator, range with vented hood, dishwasher, clothes washer and vented clothes dryer, electronic equipment and lighting allowance.
1,000 Btuh for the kitchen, 500 Bluh for the utility room, 900 Btuh allowance for TVs, computers and lighting fixtures.
3600 BTUh: Same as above but with an extra fridge or freezer.
Plants
Adjust the number of plants in the model to reflect what you are observing in the home. Amply allows you to indicate the number of plants by size:
Shorter than 12"
Between 12" and 24"
Taller than 24"