Good afternoon, you. How to reduce heat loss in an apartment building?
Good afternoon! Here are some tips on how to reduce heat loss in an apartment building:

- **Insulate your windows.** Windows are one of the biggest sources of heat loss in a home. You can insulate your windows by installing storm windows or by using window film.
- **Seal up any cracks or gaps around doors and windows.** Even small cracks can let in a lot of cold air. Use caulk or weatherstripping to seal up any cracks or gaps.
- **Add insulation to your walls and attic.** Insulation will help to keep the heat in your home and the cold air out.
- **Install a programmable thermostat.** A programmable thermostat will allow you to set different temperatures for different times of day. This can help you to save energy and money.
- **Close the curtains or blinds at night.** This will help to keep the heat in your home and the cold air out.
- **Use a space heater safely.** Space heaters can be a great way to heat up a small area, but they can also be dangerous if they are not used properly. Make sure to follow the manufacturer's instructions and to never leave a space heater unattended.
- **Ventilate your home properly.** You need to ventilate your home to prevent moisture buildup, but you also don't want to let all the heat out. Open windows and doors for short periods of time to let in fresh air, and then close them again to trap the heat.
- **Get a home energy audit.** A home energy audit can help you to identify areas where you are losing heat. The auditor will be able to make recommendations on how to improve the energy efficiency of your home.

By following these tips, you can reduce heat loss in your apartment building and save money on your energy bills.


Sources:
1. discover.hubpages.com/technology/How-to-Slash-Your-Energy-Bills-with-Energy-Saving-Technology
2. belmontstar.com/10-tips-for-installing-an-hvac-system-in-a-metal-building/
Thank you that was really helpful, could you provide me with a material example that i could use for sealing cracks around my windows and doors?

Also Could you provide me a list of auitors in my area?
New York, new york.
Sure, for sealing cracks around windows and doors, a good material to use is weatherstripping. This can be made of materials such as felt, foam, or vinyl, and can be purchased at most hardware stores.

As for a list of auditors in New York, NY, there are several options available. Here are a few suggestions:
- Brighter Energy Audit
- The Building Performance Workshop
- GreenHomeNYC
- Solar One
- The Energy Coalition

These companies specialize in conducting energy audits and can help you identify areas where you can improve the energy efficiency of your home.