Test the House Before Your Guests Do: A Two-Hour December Shakedown

There's a particular kind of December panic that has nothing to do with presents. It's the realisation, at 8pm on the 23rd, that the shower runs cold when two taps are on, the downstairs loo takes an age to drain, and you own precisely one working bulb of the right fitting.

None of these are real emergencies. They're small failures that arrive all at once because the house is suddenly doing twice the work it does the rest of the year. Ten people in a three-bed semi is a stress test, so treat it like one — deliberately, in advance, with a cup of tea in hand.

The whole list below takes about two hours. Split it over a couple of evenings if you'd rather. Just do it before the good glasses come out.

Start with water, because water ruins the party

Run the hot tap at the furthest point in the house while someone else has the shower going. That's your real-world pressure test, and it tells you more than a single tap ever will.

While you're at it:

• Open and close the stopcock. Silly as it sounds, a stiff one is genuinely useless in a hurry, and December is exactly when you don't want to discover that.
• Check under every sink for the early signs of a weep — a tidemark, a bit of green on a copper joint, a soft patch on the cabinet base.
• Look at the ball valve in the loft tank if you still have one, and make sure the overflow is visibly dripping outside rather than quietly soaking the ceiling.
• If the boiler pressure has crept low, top it up now and note the reading so you know what normal looks like.

Then let the drains talk

Slow drains are the single most common hosting-season complaint, and they almost always warn you first. Fill the basin, pull the plug, and watch how fast the water actually goes. If it gurgles or dawdles, sort it this week rather than next.

A sink of hot water with a splash of washing-up liquid clears a surprising amount. A plug of hair in a shower trap is a two-minute job with a bit of wire. What you want to avoid is the after-dinner scenario where nobody can wash up because the sink is backing up.

Don't forget outside: check the drains and gullies in the garden aren't full of leaves, and that the air-brick vents on your external walls are clear. Cold weather plus blocked vents is a damp problem waiting to happen.

Heat the rooms you're actually using

If your radiators have thermostatic valves, this is the week to walk around and set them sensibly — spare room up, hallway down, box room off unless someone's sleeping in it. Guests feel a cold bathroom far more than a cold landing.

Then balance-test it: run the heating for an hour and check every radiator. Cold at the top means air, so bleed it — a radiator key and a towel, done. Cold at the bottom usually means sludge, which is a conversation for January but worth knowing about now.

Finally, check the boiler's timer hasn't drifted from a summer setting, and make sure you know how to override it. Nothing says festive like a house at 15°C because nobody remembered the programmer.

Fuses, bulbs and the mystery drawer

Go round the house and count your spare bulbs. Then buy more than you think you need, in the fittings you actually own — bayonet, screw, GU10, the little candle ones for the landing. The same goes for fuses in the plug sizes you use, and a couple of spare batteries for smoke alarms.

While you're up there, test the smoke alarms. Not glamorous, but it's a two-minute job and it's the one check that matters more than all the others.

Bathrooms and the steam problem

A full house generates an astonishing amount of moisture. Run the extractor fan in each bathroom for a good ten minutes and, if it's noisy or lazy, clean the grille — a surprising number are simply clogged with dust.

Give the sealant around the bath and shower a once-over. Lifting silicone isn't a job for December, but knowing about it stops you being surprised by a stain on the kitchen ceiling in January.

And stock the guest bathroom properly: loo roll where people can find it, a spare towel, a hook on the back of the door. It's the small stuff that makes a house feel looked-after.

The ten-minute kit

The final piece of the puzzle is a small box you can grab without thinking. Nothing fancy:

• A torch that works, plus spare batteries.
• Plumber's tape, a couple of old towels, and a washing-up bowl.
• A radiator key, a screwdriver set, and a roll of strong tape.
• The name and number of your plumber and electrician, written down rather than buried in your phone.

Stick it somewhere you'll remember. Under the sink is fine. Under a pile of coats at the back of the cupboard is not.

Two hours now, a quiet Christmas later

None of this is about making your home perfect. It's about removing the handful of small cruelties that turn a full house into a stressful one: the shower that won't run hot, the sink that won't drain, the bulb you can't replace.

Spend the two hours this week. Then shut the toolbox, put the kettle on, and let the guests arrive to a house that's quietly ready for them.