If your garage is separate from your home, as it often is, and sometimes still is, then chances are you’re not paying for it to heat up or cool down. However, if your garage is attached to your house, then your door is probably the largest door in the house and can account for almost half of the total energy loss in your house, if it is not insulated. While newer garage doors are often already insulated, most older models are not and are responsible for all heat loss as air flows through the door. The simplest and cheapest solution is to insulate the garage door.

Your home’s HVAC system is probably not connected to your garage. So theoretically you are not paying to heat it up or cool it down. But unless you have an absolutely tight seal on the door between your garage and your house, the air escapes into the garage. Also, if you have a workshop in your garage or use it for storage, you may want to avoid having it the same temperature as the outside, both in summer and winter. Therefore, to prevent air from flowing from your house into the garage and then outside, and to prevent your garage from having the same temperature as the outside, you need to insulate your garage door.

The easiest way to insulate your garage door is to measure it and then purchase a garage door insulation kit. These kits are available for single car doors and double car doors and must include the insulating material and other associated materials; you just need to provide your own tools. If you are more of the do-it-yourself type, you can purchase the insulation rolls and other materials individually. However, if you don’t like doing things yourself and are not comfortable doing the job even if you buy a kit, garage insulation is still important. You can get help, often from a local handyman or helpful brother. Measure your door, purchase a kit, and contact the maintenance staff of your choice. Insulation should take less than a day and should be relatively inexpensive.

Insulating your garage door will help lower your energy bill, as the air will no longer use the garage as a front door to escape your home.