Start with the quietest version of one sound
Your puppy does not need to meet the vacuum, the doorbell and the washing machine in the same afternoon. Pick the sound she hears most often in your home and begin with its mildest form. That might mean a vacuum running in another room with the door partly closed, a doorbell recording played very softly from a phone, or the washing machine on a gentle cycle while she settles in the kitchen. Distance and low volume are what make the sound learnable instead of startling. If she freezes, tucks her tail, tries to leave or barks without settling, the sound is too close or too loud for today, so increase the distance and try again another time.
Pair the sound with something she already loves
A puppy learns what a sound predicts. If the vacuum appears and good things rain down, the vacuum starts to predict good things. Scatter a small handful of her normal treats on the floor as the distant sound begins, play a gentle tug game while the doorbell recording plays softly, or offer a lickable mat while the washing machine hums in the background. End the pairing while she is still comfortable, switch the sound off first and let the treat or game finish a moment later, so the good feeling belongs to the sound rather than to its absence.
Treat each appliance as its own lesson
Each of these sounds asks something different of her. The vacuum moves, changes pitch and comes toward her, so practise first with it switched off and parked, then running far away, and only later moving slowly in a predictable line across one room. The doorbell is sudden and often followed by visitors, raised voices and a rush to the door, so practise the chime alone at low volume before you ever combine it with a real knock or a guest arriving. The washing machine is steadier but vibrates and thumps on a spin cycle, so let her choose a bed nearby rather than placing her mat right against it.
Read her body, not the clock
There is no correct number of minutes for a sound session. A relaxed puppy shows loose wiggles, soft eyes, a tail in its natural position and an ability to eat, play and sniff between glances at the sound. A puppy who is coping but unsure may yawn, lick her lips, move behind you or keep checking the door, and those quieter signals are your cue to make the next step smaller, not to push through. Let her leave the room whenever she wants to, because the freedom to retreat is part of what makes staying feel safe. If she hides, trembles, drools or cannot settle long after the sound has stopped, skip that sound for a while and mention the reaction at her next vet visit, especially if everyday noises are starting to shape where she will go in the house.
Build toward real life in small repeats
Once she relaxes with the soft version, change only one thing at a time: a little closer, a little louder, or moving instead of still. Repeat each new level a few times on different days so the lesson survives a change of room, a different family member vacuuming, or the doorbell ringing when she is sleepy. Households work best when nobody freelances a louder test because she did well yesterday. Keep the agreed sound, distance and next step noted in KinsLe Care Teams, where each family member can mark a session complete with a timestamp and the next person picks up exactly where the last gentle session left off.