What your body needs changes across the night

To fall asleep, your core temperature has to drop. That is a physiological requirement, and a cooler room speeds it up — so being slightly cool when you first lie down is correct.

Once you are in deep sleep, though, your body regulates less well and your temperature sits at its daily low. A room that is still cool at that point has you curling up, pulling the covers tighter, sometimes waking outright.

Closer to morning it reverses again: slightly cooler helps you wake naturally. Those three needs conflict, which is why any single overnight temperature — whatever number you pick — is wrong for part of the night.

The same night, in order

1. 22:30

   The button goes in and the room winds down

   The air conditioning takes over from its daytime setting and holds 26.0. The bedside lamp drops to a very dim warm white and fades to nothing over the next ten minutes, with white noise sitting underneath at a low volume. No chime, and no light snapping on anywhere.

2. 23:30

   Into deep sleep, and the room warms a degree

   The target moves from 26.0 up to 27.0 — the only upward step of the whole night. The lamp is long out and the white noise stopped itself before this, so there is nothing to see or hear at the moment it happens. The air just stops feeling cool.

3. 04:00

   Back to light sleep, half a degree only

   The air settles at 26.5. Half a degree rather than the full drop is deliberate: this is the shallowest stretch, and an obvious change in compressor speed is enough to surface you. Curtains, lamp and speaker all stay exactly where they are.

4. 06:30

   Cool air and light arrive together

   The air goes to 25.0 while the bedside lamp starts climbing from dark, its warm amber shifting towards white. Both at once is what lets the body read the change as morning rather than as somebody switching a light on.

5. 07:00

   The scene ends and hands the room back

   The sleep set releases itself here: curtains open, the air returns to your usual daytime setting or shuts off, the lamp goes out. The first thing you do on waking is never cancelling the button you pressed last night.

What each stage is doing

Four things it takes care of

Different people, different numbers

What you need to have

How the whole thing works

Use the ready-made blueprint

The hub ships with 22 tested automation blueprints — think of one as a fill-in-the-blanks form. This uses adascene_multi, which can schedule up to ten time points a day. Here it needs four.

Just say the word

The WOOWTECH hub ships with HA-MCP, so AI can reach straight into your system and do the work: find the bedroom air conditioning, the bedside lamp and the speaker, lay out the four stages, then run them once to confirm the temperature really moved before reporting back.

Prompts you can copy straight across

Every block below can be copied whole, using the button on the right. Pick the one closest to what you want; you do not need all of them.

I want a deep sleep mode. When I press the sleep button beside the bed,
the bedroom air conditioning should follow the night on its own: cooler
as I drop off, warmer through deep sleep, cooler again before I wake.
Fade the bedside lamp out slowly and play white noise for thirty
minutes, then stop it.

Build a deep sleep mode for the master bedroom, started by the bedside
sleep button.
As I lie down set the air to 26, take the lamp to a very dim warm white
and fade it to off over ten minutes, and play white noise very quietly.
An hour later move into deep sleep: air at 27, every light off, sound
stopped.
At 04:00 move into light sleep: air back down to 26.5, nothing else
changes.
Thirty minutes before I wake, air down to 25 and raise the lamp from
dark to a medium cooler white.
If the room has more than one air conditioner, keep their mode and
temperature aligned so one is not heating while the other cools.
Turn every notification on these rules off. Nothing may be pushed to me
overnight.
Skip anything I do not own rather than pretending I have it.
Once it is built, test it yourself, confirm it really works, then tell
me which devices you used.

One of us feels the cold and the other runs hot, so adjust the deep
sleep mode for that.
Compromise on the air: 26 falling asleep, 27.5 in deep sleep, 25.5
before waking.
There is an electric blanket on the colder side of the bed. Switch it
on when deep sleep starts and off before I wake.
Leave everything else as it is.

Please adjust the deep sleep set.
Deep sleep runs too warm, take it from 27 down to 26.5.
I have also been going to bed later, so push all four time points back
by an hour.
And cut the white noise to twenty minutes.

We swapped in a new bedroom air conditioner last week and the old unit
is gone.
The sleep button still dims the lamp and starts the white noise, but the
temperature sits still all night.
Please take a fresh inventory of the air conditioning in that room, drop
the unit that no longer exists, and point all four stages at the new one.
Then run the deep sleep stage on the spot, so I can watch the new unit
take the target temperature.

Common questions