For starters, you can add weather stripping to outside-facing doors and windows. If your landlord doesn’t want to pay for it, then it can be found cheaply on aliexpress. Also, add insulation outside-facing switch covers and outlet plates.
For starters, you can add weather stripping to outside-facing doors and windows. If your landlord doesn’t want to pay for it, then it can be found cheaply on aliexpress. Also, add insulation outside-facing switch covers and outlet plates.
The bathroom/shower.
1 kW is enough to heat 1 liter of water per minute by 14.3 degrees Celsius. If you have a 20 l/min shower head and water pressure to actually deliver that, that’s 20-30 kW of power for as long as the shower is running (if the water is heated by heat pump, that’s output power, input would be 1/4th to 1/3rd, and wastewater heat recovery is possible - but most places don’t have that and use fossil fuel or resistive heating).
A 15 minute, 20l/min shower uses 5-7.5 kWh. You can reduce that by a factor of 6 by using a 10 l shower head and 5 minutes of water (turning the water off while you don’t actively need it). At 200 kg CO2 per MWh (natural gas), that’s 0.3-0.45 tons of CO2 saved per year.
Likewise, lowering the thermostat and saving heating can make a huge difference.
In general on a large scale, living in a smaller apartment is “greener”, since less space needs to be heated, but also less space has to be built, and higher density means less travel.