Two House Shapes, One Day
Much of Sutton is interwar semis and chalet bungalows, and the two are laid out quite differently. In a semi the bedrooms sit round a single landing, one after another, with the smallest often used as a study or a nursery. In a chalet bungalow some bedrooms are on the ground floor beside the living room and one or two are up in the roof, reached by a narrow stair.
Either way, the aim of a whole-house heat treatment is the same: every room where somebody sleeps is brought up to a temperature bedbugs cannot survive during one visit, and checked with the thermal camera before we leave. Treating two bedrooms this week and the third next month gives the bugs in the third room a month to walk across the landing.
How heat works, and why it deals with the eggs, is on the London heat treatment page for the full explanation. Here we stick to the house.
Deciding Which Rooms Go on the List
The quote is built on rooms, so the first job is agreeing which rooms count. The rule we use is simple: any room where somebody has slept since the bites started. That list is often longer than people expect.
- Every bedroom with a bed in use, including the one nobody has reported bites in yet.
- The small bedroom if anyone has been using it as an overflow when they could not sleep.
- The front room if a parent has been dozing on the sofa or a child has been on a sofa bed.
- A guest room that was made up for a visitor in the last few weeks.
Kitchens, bathrooms and hallways are rarely on the list. If you are not sure whether bedbugs have reached a room, an inspection answers it before you pay for heat in a room that does not need it. How they get from the first bedroom to the rest of a family house is covered on our main Sutton page.

The Semi: Working Along the Landing
In a semi the bedrooms are close together and share a landing that everyone crosses at night, which is exactly why they are best done together. The landing itself is not heated as a bedroom, but we look at the carpet edge along it and at any cupboard on it where bedding is kept.
The wall you share with the house next door is the one place heat cannot help after the day. Heat leaves nothing behind, so where a bedroom backs onto the attached house we may put a light residual along that edge. If we do, we tell you where it went and when the surfaces can be touched, and you follow that.
A child moving into the small room for the first time is a separate question with its own page: the Wallington page covers it.
The Chalet Bungalow: Both Floors Together
A chalet bungalow is the case where splitting the job is most tempting and least sensible. The downstairs bedrooms are easy to reach; the roof rooms are warmer, have sloping ceilings and usually have eaves cupboards along one side. We treat both levels in the same visit, because a household moves between them every day.
Bedrooms in the roof, and what is different about them, have their own page for Belmont. If your eaves are full of boxes that come out once a year, read our guide to stored decorations and seasonal boxes before the day.

Getting a Whole House Ready
One bedroom is an evening’s preparation. Four is a weekend, and it goes better if you split it between the adults and do it room by room with our list rather than all at once.
- Take the heat-sensitive items out of every bedroom on the list: aerosols, candles, medication, vinyl, the electronics we name, and plants. Put them in the kitchen, not on the landing.
- Strip each bed on the morning, bag the bedding in the room, and tie the bags before they cross the landing.
- Leave clothes, wardrobes, beds and mattresses where they are. They are being treated in place.
- Arrange where the family, and every pet, will be for the day. Pets are out of the treated rooms throughout, and with every bedroom being heated that usually means out of the house.
- Keep a phone on you. We ring when the rooms are cooling, and you can move back in that evening.
What a Whole House Costs
Treatments start from £220. Heat costs more than chemical, and three or four bedrooms cost more than one, so the figure depends on the room list above. Ring 0800 955 1018 with that list and you get the price on the phone before anything is booked.
If it really is one bed in one room, found early, chemical treatment in Sutton may be all you need, and we will say so.
← Bedbug Control Sutton · Bedbug Heat Treatment London, in full
Bedbug Heat Treatment Sutton — Questions
Can every bedroom really be done in one visit?
In most semis and chalet bungalows, yes. It is most of a day on site, and we confirm on the phone once we know how many rooms are on the list.
Do we treat the loft bedroom and the downstairs bedrooms at the same time?
Yes. Splitting the two floors across separate visits leaves one of them as somewhere for bedbugs to survive, and the household walks between them every day.
Should we include a room where nobody has been bitten?
If somebody has slept in it since this started, usually yes. Bites vary and some people do not react at all, so a quiet room is not proof of a clear one.
Where does the family go during the treatment?
Out of the treated rooms for the whole day, and with every bedroom involved most families go out altogether. Pets go with you or to someone who can have them.
Can we throw the old mattress out first to make it easier?
Please do not, unless we advise it. Carrying a mattress down the stairs and through the house spreads bedbugs, and heat treats it where it is.
How much is heat for a three-bedroom semi?
Treatments start from £220 and heat for three bedrooms costs more than that. Tell us which rooms are involved and we give you the figure on the phone.
Bedbug Treatments in Sutton
Every service has its own page for Sutton: heat, chemical, hotels, commercial premises and inspections.
Heat Treatment Advice
The guides that go into bedbug heat treatment in more depth.

How Heat Treatment Works, and Does It Kill Eggs?
What heat actually does to a bedbug, and why an egg has no defence against it.
Read more →
How Long Does a Heat Treatment Take?
Why one London flat takes four hours and another takes ten, and what decides it.
Read more →
Heat or Chemical: How to Choose
Five questions to ask yourself. Answer them honestly and the right treatment picks itself.
Read more →
Preparing Your Home for Heat Treatment
What to do the week before, the night before and the morning of. A plan, not a list.
Read more →
Can Bedbugs Survive a Heat Treatment?
Sometimes, yes. Here are the five ways it happens, and how each one is avoided.
Read more →Bedbug Control Across Sutton
Each area page is written around one situation we deal with.
Tell Us About the Property
List the rooms where people have slept since the bites started, and tell us about any pets.