I Have No Asset List for My TM44 Inspection: Can It Still Be Done?

If your business needs a TM44 inspection but you do not have a full air conditioning asset list, do not panic. In many cases, yes, a TM44 inspection can still be done, but the process may depend on what information is available, how complex the system is, and how easy it is to identify the equipment on site.

This is one of the most common problems building owners, facilities managers, landlords, and managing agents run into. You know the property has air conditioning. You know the building may be over the 12kW threshold. You may even know the inspection is overdue. But when it comes time to request a quote or prepare for the survey, the paperwork is missing, incomplete, or all over the place.

That situation is more common than most people think.

At TM44 UK, we deal with this all the time. Some clients have a clean plant register, full maintenance history, and clear model numbers for every unit. Others have none of that. They may have inherited the building, taken over a portfolio, changed managing agents, or lost records after years of staff turnover. The key thing to understand is this:

No asset list does not automatically mean no TM44 inspection.
It means the job needs to be approached properly.

If you are trying to book a TM44 air conditioning inspection and do not have a proper asset list, this guide will explain what can still be done, what information helps, what may cause delays, and how to move forward without wasting time.

What Is an Asset List for a TM44 Inspection?

An asset list is basically a record of the air conditioning equipment in the building. It usually includes details such as:

• number of indoor and outdoor units
• system type
• make and model
• cooling output
• installation dates if known
• areas served by each system
• reference numbers or plant labels
• maintenance or servicing history

In an ideal world, this list makes the TM44 survey easier, faster, and more accurate. It helps the assessor understand what systems are installed, how they are arranged, and whether the building is likely to meet the threshold that triggers inspection requirements.

But in the real world, many commercial properties do not have a clean record.

A building may have had systems added over time. Units may have been replaced without documentation being updated. Several occupiers may have installed independent split systems. The landlord may hold some records, the tenant may hold others, and the managing agent may have almost no technical detail at all.

That is exactly why this topic matters.

Can a TM44 Inspection Still Be Done Without an Asset List?

In many cases, yes.

A TM44 inspection can often still move forward if there is enough information available on site for the assessor to identify the relevant systems and understand their combined cooling capacity. The inspection may involve more investigative work, more time on site, and more back-and-forth before the final report is completed, but it is not automatically a dead end.

What matters is this:

• can the relevant air conditioning systems be located?
• can the assessor access the areas they need to inspect?
• can model numbers, labels, nameplates, or manufacturer information be found on site?
• can the combined effective output be reasonably established?
• can the layout and usage of the building be understood clearly enough for the inspection?

If the answer is yes to most of those, there is usually a route forward.

If the answer is no because the systems cannot be identified, plant areas are inaccessible, or critical information is missing entirely, then the inspection may need to be delayed until more evidence is gathered.

That is why it helps to speak to a proper TM44 specialist UK rather than treating the inspection as a generic tick-box service.

Why This Happens So Often in Commercial Buildings

Missing asset data is not a niche issue. It is standard.

Here are some of the most common reasons clients come to us without a usable asset list:

1. The building changed hands

A new owner acquires a commercial property, but the handover documents are incomplete. There is an EPC, maybe a fire risk assessment, maybe some maintenance invoices, but no proper AC asset schedule.

2. The managing agent changed

When one managing agent hands over to another, things often go missing. The new team may know a TM44 inspection is needed but have almost no technical details.

3. The site has grown over time

A building started with one or two systems, then had extra units added over the years. Nobody updated the central records.

4. The tenant installed additional systems

Especially in offices, retail units, clinics, and hospitality premises, occupiers often add their own cooling systems. The landlord may not have a full record of what is actually there.

5. Old records exist but are unreliable

Sometimes a client has a list, but it is outdated. Units on the list are gone. New units are missing. The capacities are wrong. In that case, a bad asset list can be almost as risky as no asset list.

6. The site team knows the building, but nothing is written down

The engineer or caretaker may know where everything is, but there is no formal register. That is still workable in some cases if access and identification are possible.

What Information Helps If You Do Not Have a Full Asset List?

If you do not have a proper list, do not just send a one-line message saying “we have no records.” That slows everything down.

Instead, gather as much of the following as possible:

Photos of indoor and outdoor units

Even basic phone photos can help. Clear shots of the front, side, and any labels or serial plates are useful.

Model numbers and manufacturer names

These are massive. If the assessor can identify the make and model, they can often estimate or confirm system details much more easily.

Floor plans or site layouts

Even rough plans help show where systems are located and what areas they serve.

Previous maintenance records

Service sheets, F-Gas records, maintenance visits, or breakdown reports can reveal installed equipment and system types.

A rough count of units

You may not know exact capacities, but if you can say “we have 6 indoor cassettes and 3 outdoor condensers,” that is better than nothing.

Building usage details

Office, restaurant, hotel, clinic, leisure site, school, retail unit, warehouse office, multi-let building. Usage affects how the inspection is approached.

Access information

Can the roof be accessed? Is there a locked plant room? Are ladders, keys, permits, or escorts required?

If you are unsure whether your building even needs the inspection, use our TM44 Checker as a starting point.

What Usually Delays the Report When No Asset List Exists?

This is the bit clients often underestimate.

The problem is not always the survey itself. The problem is the missing information that slows down the route to a clean, accurate report and lodgement.

Here are the biggest delay points:

1. No access to all relevant equipment

If the assessor cannot see rooftop units, external condensers, or plant rooms, there may not be enough information to complete the job properly.

2. Missing labels or unreadable model plates

Older systems can have faded or damaged labels. Without visible details, identification gets harder.

3. Multiple occupiers with separate systems

This is common in mixed-use or subdivided commercial buildings. Figuring out what belongs to whom and which systems count together can take time.

4. Unclear system boundaries

Sometimes one condenser serves multiple indoor units across different zones, and nobody on site can explain the arrangement.

5. Outdated maintenance records

Clients send a plant list that turns out to be years out of date. That creates confusion rather than clarity.

6. Late discovery of more equipment

The initial quote assumes one setup, then the site visit reveals extra units in another area. That may affect scope, timing, and cost.

If you need a fast turnaround, especially where compliance is urgent, our Emergency TM44 24-48 Hour Service may help, but speed still depends on access and available information.

A Realistic Example: Small Office With No Plant Register

Let’s say a managing agent contacts us about a small London office. They know there is air conditioning across two floors, but they do not have a plant register or clear asset list.

What happens next?

Instead of stopping there, we would usually ask for:

• any photos of indoor and outdoor units
• recent maintenance paperwork
• building layout
• confirmation of access
• rough count of systems
• whether there has been a previous TM44 certificate government lodgement or report

If the photos show, for example, four ceiling cassette units served by two outdoor condensers with identifiable model numbers, the job can often move forward normally. The missing formal list is inconvenient, but not fatal.

This is exactly why a sensible pre-quote process matters.

Another Example: Multi-Tenant Building With Partial Records

Now take a more complex case.

A landlord owns a commercial building with several leased suites. One tenant has their own split units. Another has a VRF system installed years ago. The landlord has some maintenance records for common areas but nothing consistent for the tenant-installed equipment.

In this scenario, the key questions become:

• what systems fall within the inspection scope?
• what systems serve occupant comfort?
• what equipment is accessible?
• what capacities can actually be verified?
• who controls the relevant records and access?

This is where an experienced TM44 consultant makes a big difference. The answer is not always obvious from the paperwork alone. Sometimes the site inspection itself is what allows the asset picture to be built properly.

Do You Need the Exact Cooling Output Before Booking?

Not always.

A lot of clients assume they need a perfect technical schedule before even asking for a quote. That is not true.

If you have exact outputs, great. If not, the next best thing is enough information to make an informed assessment. In many cases, make, model, unit count, and site photos can get the process moving.

If you are completely unsure about the threshold, read our TM44 inspection requirements UK page and our TM44 regulations UK guide for a clearer understanding of when inspection is likely to apply.

What We Recommend You Send Before Requesting a Quote

If you have no asset list and want the quickest route to a useful quote, send this:

• site address
• building type and use
• rough number of indoor units
• rough number of outdoor units
• any photos of equipment and labels
• floor plans if available
• recent servicing or maintenance documents
• roof or plant room access notes
• whether you have a previous TM44 report or not
• your required timeframe

That is enough in many cases to get the conversation moving properly.

You can also start directly on our Get Quote page.

Why Businesses Should Not Wait Just Because Records Are Poor

This is where people lose time and create bigger compliance risk.

They think:
“We do not have the asset list yet, so we will sort it later.”

Then later becomes months. Then a transaction, audit, lease event, or internal compliance review suddenly makes the issue urgent.

If you suspect your building may need inspection, the smarter move is to act early. Even if records are incomplete, you can often start the process, understand what is missing, and build a route to completion.

Waiting rarely improves things on its own.

Our TM44 enforcement, fines and penalties UK page explains why leaving it too late is a bad gamble.

The Difference Between No Asset List and No Chance

These two things are not the same.

No asset list

This usually means records are incomplete, but the system may still be identifiable through site access, model numbers, photos, and maintenance history.

No chance

This is when nobody can access the equipment, nobody knows what systems are installed, no labels are visible, and no supporting evidence exists at all.

Most clients are in the first group, not the second.

That is why the right approach is not to assume failure. It is to assess what evidence exists and what can be built from there.

What Happens If More Units Are Found During the Inspection?

This can happen, especially where records are poor.

A quote may be based on the information provided, but the site visit reveals extra systems, hidden plant, or further areas with comfort cooling. When that happens, the scope may need to be reviewed.

That is not a trick or upsell. It is just reality.

A proper TM44 inspection has to reflect the actual system configuration. If the building turns out to have materially more equipment than initially described, the final scope must match the real site conditions.

The good news is that finding this early is better than producing a weak or incomplete inspection that creates issues later.

How TM44 UK Helps When Records Are Incomplete

At TM44 UK, we do not expect every client to arrive with a perfect spreadsheet.

We regularly help building owners, occupiers, managing agents, and facilities teams where:

• there is no proper asset register
• the previous provider has disappeared
• the building has changed over time
• only partial maintenance history exists
• there is uncertainty around thresholds and scope
• urgent inspection is needed before a deadline

Our role is not just to tick a box. It is to help you figure out the practical route forward.

Depending on the site, that may involve:

• reviewing what information you already have
• identifying likely system scope from photos or documents
• explaining what is still needed before the visit
• carrying out the TM44 survey
• preparing the report and recommendations
• supporting the final TM44 lodgement process UK

If needed, we can also support wider compliance conversations around MEES compliance support, energy efficiency upgrade report post TM44, and related building energy matters.

Quick Checklist: What to Do If You Have No Asset List

If you are in this situation, do this now:

Step 1

Count the units as best you can.

Step 2

Take photos of all accessible indoor and outdoor equipment.

Step 3

Photograph any model numbers or nameplates.

Step 4

Find any maintenance or service documents.

Step 5

Locate any floor plans or building layouts.

Step 6

Note any access restrictions.

Step 7

Request a quote with all of that attached.

That alone can save days of back-and-forth.

Final Answer: Can It Still Be Done?

Yes, in many cases it can.

A missing asset list is a common issue, not an automatic blocker. The important thing is to act early, provide whatever evidence you do have, and work with a provider who understands how to handle incomplete records properly.

Some sites are simple. Some are messy. Some need extra investigation. But many TM44 inspections can still move forward without a perfect plant register from day one.

So if your building may need inspection and your records are incomplete, do not sit on it.

Start the process properly.

Use our TM44 Checker to assess whether your building may fall into scope, or go straight to our Get Quote page and send over what you have. If the information is incomplete, we will tell you honestly what can be done next.

Because in this game, progress beats delay every single time.

Need Help With a TM44 Inspection but No Asset List?

If you are missing plant records, model numbers, or a clean AC schedule, we can still review your situation and advise on the best route forward.

TM44 UK can help with:

• TM44 inspections across London and the UK
• urgent and emergency TM44 services
• report preparation and government lodgement
• support for buildings with incomplete records
• guidance on what information is needed before inspection

Start here:

• Get a TM44 Quote
• Check if your building may need TM44
• Learn more about TM44 inspections
• Read about TM44 inspection cost UK