The insulation in your house could be a sneaky contributing factor to the heat seeping in. Some sections of your home’s insulation may not be as strong as the others, so it’s ideal to have a qualified home energy assessor check the insulation’s quality to know what you need.
The solution to this is simple — update the old insulation in your home. According to Forbes, re-insulating your home costs around $2.50 to $8.00 per square foot.
Updating the insulation of just the attic or buying insulating curtains for your windows are good first steps to re-insulation without facing the whole cost of redoing the whole home.
Despite the cost, re-insulating your whole home is a worthy investment that will save you money on energy for your HVAC technology for many years after it’s redone.
Source: https://www.gobankingrates.com/saving-money/home/how-to-save-on-your-ac-bill/