A man using weatherstripping to seal a door

Check for drafts around your home.

Sealing up your doors and windows is one of the most cost-effective steps you can take to improve your home's efficiency and keep these drafts at bay. The likeliest spots are in attics and basements and around windows and doors, as well as electrical outlets and switches on exterior walls.

Seal out drafts using foam tape weatherstripping available at hardware and home improvement stores.

First, clean the surface (for example, around a door frame) where the weatherstripping is to go. Measure the sides of the frame and cut the foam tape to those lengths. Apply the sticky side of the tape to the outer edges of the door frame.

For sliding doors and windows, use v-seal weatherstripping in the same manner.

When you close the sliding panel, the tape compresses enough to allow proper closure while covering any gaps that could allow heat loss.

Reduce heat loss from single-paned windows affordably with insulator film.

First, clean the window thoroughly, then apply double-sided tape around the inside of the frame. Cut the insulator film a few centimetres wider and taller than the window. Centre the film on the window leaving no gaps for air to escape, then press into the tape. To remove wrinkles and improve the seal, blow-dry the entire surface with a hair dryer on the hottest setting.

Block heat loss from outlets and switches with foam inserts.

Start by turning off the breaker switch to the room or outlet in question. Remove the switch or outlet plate with a screwdriver. Place a pre-cut foam pad – they come in shapes to match most configurations – over the exposed switch or outlet so that it fits snugly, then attach the plate again. Add safety caps to outlets that aren’t regularly in use.