Where in buildings is energy often wasted? What types of renovations might I make to a building to reduce/prevent energy loss? I need some examples, please.

I was thinking about things like:

-Leaving lights on
-Using machines/equipment that doesn't work properly, but still uses a lot of energy (compromised equipment)
-Computers and other devices which are not turned off properly, and use up energy when not being used

- airconditioning that is not monitored

- turning down the heat when no one is in the building
- leaky taps
- running toilets
- general maintenance needs to be kept up to date.

What about the renovation part? (it cannot be something simple like switching the lights off, it has to be a true renovation to the building)

I thought of adding insulation for one thing.

Thermostats that can be turned up and down remotely.

Hmm... What about getting appliances fixed/upgraded so people don't have the 'compromised equipment' problem (as listed in the post at 2:03)?

I asked my teacher and she said that these ideas were great:

-Adding more windows to sunny spots for passive solar heating.
-Changing light bulbs to LED lights (as they use less energy).
-Upgrading to a timed AC so it turns off after a specified time.
-Getting low flush toilets.

In buildings, energy is often wasted in multiple areas. By identifying these areas and implementing appropriate renovations, you can significantly reduce or prevent energy loss. Here are a few common examples:

1. Inadequate insulation: Heat or cool air can escape through poorly insulated walls, roofs, windows, and doors. By improving insulation, such as adding insulation materials or sealing gaps, you can minimize energy loss.

2. Inefficient windows: Older windows with single panes or poorly sealed frames allow heat transfer between the interior and exterior. Replacing them with energy-efficient windows that have double or triple panes and low-emissivity coatings can greatly reduce energy loss.

3. Outdated lighting: Traditional incandescent bulbs consume more energy and produce excess heat compared to energy-efficient alternatives such as LED or CFL light bulbs. Replacing outdated lighting fixtures with more efficient ones can lead to significant energy savings.

4. Inefficient HVAC systems: Older heating, ventilation, and air conditioning (HVAC) systems tend to be less energy-efficient and wasteful. Upgrading to newer, more efficient HVAC systems with programmable thermostats and proper maintenance can greatly reduce energy consumption.

5. Leaky air ducts: Leaky air ducts can cause hot or cold air to escape before reaching the intended destination. Sealing and insulating the ductwork can help prevent energy loss and improve overall HVAC system efficiency.

6. Phantom loads: Electronic devices and appliances often consume energy even when not in use, known as phantom loads or standby power. Using power strips with switches or smart power outlets allows you to easily turn off multiple devices at once, reducing unnecessary energy consumption.

7. Inefficient water heating: Traditional water heaters can be energy-intensive. Replacing them with energy-efficient models like tankless or heat pump water heaters can help reduce energy usage and lower utility bills.

By addressing these areas of energy waste through renovations and improvements, you can make your building more energy-efficient and environmentally friendly. Additionally, consider conducting an energy audit or consulting with a professional to tailor the renovations to your specific building and budget.