Whose Permission the Day Depends On
The resident books us, but in a block with a managing agent, an estate office or a facilities company, it is the building that decides how and when a contractor comes in. Tell them as soon as the date is fixed. They will usually want the flat number, the date, our company name, roughly how long we will be there, and which rooms are being treated.
Some buildings ask every contractor for a risk assessment and a method statement before they will issue a pass. If yours does, say so when you ring and give us the contact, so the papers go to the building directly and you are not left relaying emails between us.
What happens inside the room once we are there, and why a single visit reaches the eggs, is set out on the London heat treatment page for the full explanation. This page stays with the building side.
Heat Detectors, Sprinklers and the Front Door
A heat detector is designed to react when a room gets hot, and a room being heated on purpose will trigger one unless somebody has planned for it. In many blocks the detectors in each flat are linked to a central panel or a monitoring company, so the resident cannot simply unscrew one and put it in a drawer. How the detector is dealt with for the day is the building’s decision, made by whoever looks after the fire system, and it is their job to put it back into service afterwards.
If the flat has sprinkler heads, mention them when you book and tell the building manager too. We talk it through before the day. If the building will not allow heat treatment in a flat with its sprinklers or detectors as they are, we say so plainly and look at chemical treatment in the City of London instead.
The flat’s entrance door is almost certainly a fire door. It stays closed through the treatment, and the heat stays inside the flat.

Getting the Equipment From the Kerb to the Flat
Heat means cased machines, fans and cables, and more than one trip from the van. Ask the building a few questions ahead of time, so the start of the day is not spent in the lobby:
- Where may a contractor’s van stop to unload, and for how long?
- Is there a goods or service lift, and does it need booking for the arrival and again at the end of the day?
- Do contractors sign in at a desk, and does the desk need our names in advance?
- Can the front desk hold a key if you are not going to be there when we arrive?
Tell us the floor, whether there is a lift, and how many rooms are affected. We plan the kit and the arrival time around that rather than turning up and finding out.
Out of the Flat for the Day
Heat takes most of a day, and the flat is not somewhere to sit while it runs. Take out the heat-sensitive items on the list we send, get any pets out, and make other plans until we ring to say the rooms have cooled. You sleep at home that night.
If leaving for a whole day is the problem, because of your health, your mobility or someone you care for, the Golden Lane page deals with that. If the flat is a weekday base that sits empty at weekends, the Moorgate page explains how that changes the timing.
The Walls You Share
Heat kills what is in the treated rooms and leaves nothing behind once they cool. In a block, where the flat meets other flats through pipes, risers and party walls, we may put a light residual along the room edges afterwards. If we do, we tell you where it went and when it can be touched.
Dealing with the estate office, the neighbours and the shared corridors when one flat among many is affected has its own page: the Barbican page. Buildings converted from offices, with sealed windows and central ventilation, are covered on the Smithfield page.

The Price for a City Flat
Treatments start from £220. Heat costs more than chemical, because of the equipment and the day on site, and the figure rises with the number of rooms. Ring 0800 955 1018 with the room count and the building’s arrangements and you get the price on the phone before anything is booked. If you are not sure it is bedbugs, inspections start from £120. For the wider picture, see the City of London bedbug control page.
← Bedbug Control City of London · Bedbug Heat Treatment London, in full
Bedbug Heat Treatment City of London — Questions
Do I need the building manager to agree before heat treatment?
In most managed blocks the building expects to be told about any contractor, and the detectors mean it has to be involved anyway. What your lease requires is a question for the lease; we are pest controllers, not legal advisers.
Will heat treatment set off the fire alarm?
It can, if the detector in the room is left live. That is why the building arranges how the detector is handled before the day, and puts it back afterwards.
What if the building will not allow heat?
Then we treat the flat with chemical instead, over two or sometimes three shorter visits. We would rather tell you that at the start than book a day that cannot go ahead.
Can the front desk let you in if I am at work?
Yes, if the building allows it and you have arranged the key with them. Tell us when you book, and leave us a number to ring when the rooms have cooled.
Do the neighbours need to know about the treatment?
Heat will work in your flat whether or not they know. If you think bedbugs have come through from another flat, tell the building manager in writing so the flats next to yours can be looked at.
How much does heat treatment cost for a flat?
Treatments start from £220 and heat costs more than chemical. The exact figure depends on the number of rooms and is given on the phone before anything is booked.
Bedbug Treatments in City of London
Every service has its own page for City of London: 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 City of London
Each area page is written around one situation we deal with.
Tell Us About the Property
Tell us the rooms affected, the floor, and who manages the building, and we will ring with a price.