April 16, 2026
TM44 for Managing Agents: How to Stay Compliant Across Multi-Property Portfolios in the UK
March 10, 2026
Managing agents are responsible for keeping commercial buildings compliant with a wide range of regulations, from fire safety and EPC requirements to electrical inspections and energy compliance. One often overlooked but legally required inspection is the TM44 air conditioning inspection.
For managing agents overseeing multiple commercial buildings, staying compliant with TM44 regulations can be challenging. Large property portfolios often include office buildings, retail spaces, gyms, healthcare facilities, and mixed-use developments with complex air conditioning systems.
Understanding when TM44 inspections are required, how to manage them across multiple buildings, and how to ensure ongoing compliance is essential to avoid fines and maintain efficient building operations.
This guide explains everything managing agents need to know about TM44 inspections for property portfolios, including legal responsibilities, common compliance mistakes, and how to efficiently manage inspections across multiple commercial properties.
What Is a TM44 Air Conditioning Inspection?
A TM44 inspection is a mandatory assessment of air conditioning systems in commercial buildings in the UK.
It applies to any building where the combined cooling capacity of air conditioning systems exceeds 12kW.
The inspection evaluates:
• system efficiency
• equipment condition
• maintenance practices
• energy performance
• opportunities to reduce energy consumption
Once the inspection is completed, a TM44 certificate and report is issued and lodged on the government database.
If you are unfamiliar with the process, you can read a full explanation in our guide:
https://tm44.uk/news-blog/what-is-a-tm44-inspection/
Why TM44 Inspections Are Important for Managing Agents
Managing agents are typically responsible for compliance management across entire property portfolios.
This means they must ensure inspections are carried out on time for all applicable systems.
Failure to comply can lead to:
• enforcement notices
• compliance investigations
• fines of up to £300 per system
• increased operational costs due to inefficient systems
But TM44 inspections are not only about compliance.
They also help managing agents:
• identify inefficient HVAC systems
• reduce energy consumption
• improve sustainability performance
• support ESG reporting
• reduce long-term maintenance costs
You can read more about the enforcement process here:
https://tm44.uk/news-blog/tm44-enforcement-process-uk-2026/
When Managing Agents Must Arrange TM44 Inspections
A TM44 inspection is required when:
• air conditioning systems exceed 12kW combined capacity
• systems have not been inspected in the past five years
• a building is being sold or leased
• local authorities request compliance evidence
Many managing agents assume TM44 inspections only apply to large office buildings, but this is not the case.
Systems that often exceed the threshold include:
• VRF and VRV systems
• multiple split systems
• centralised cooling systems
• server room cooling systems
Even buildings with several smaller units may exceed the 12kW threshold.
Our guide explains the requirements in more detail:
https://tm44.uk/news-blog/air-conditioning-over-12kw-tm44-requirements-2025-2026/
Who Is Responsible for TM44 Compliance?
One of the most common questions managing agents ask is:
Who is responsible for arranging TM44 inspections?
The answer depends on the lease structure.
In many cases responsibility lies with:
• the building owner
• the landlord
• the managing agent acting on behalf of the owner
Tenants may be responsible for maintaining air conditioning equipment, but the legal obligation for TM44 compliance usually falls on the building owner or managing agent.
This can become complicated when buildings have:
• multiple tenants
• shared HVAC systems
• mixed-use spaces
Managing agents must therefore track system ownership and responsibility carefully.
How Managing Agents Can Manage TM44 Compliance Across Portfolios
Managing large portfolios requires a structured approach.
Below is a practical compliance strategy used by professional facilities managers.
Step 1 – Identify All Air Conditioning Systems
Create a register including:
• system type
• location
• cooling capacity
• installation date
• previous inspection date
Step 2 – Check Capacity Thresholds
Determine whether the system exceeds 12kW cooling capacity.
If it does, TM44 inspections are mandatory.
Step 3 – Track Expiry Dates
TM44 certificates are valid for five years.
Managing agents should maintain a compliance calendar to avoid expired certificates.
Step 4 – Schedule Inspections in Advance
Booking inspections early helps avoid:
• last-minute compliance risks
• operational disruptions
• enforcement notices
You can book inspections here:
Step 5 – Maintain Compliance Records
Store:
• TM44 certificates
• inspection reports
• maintenance records
These may be required during compliance audits.
Common TM44 Compliance Mistakes Managing Agents Make
Through years of working with commercial properties, several recurring issues appear.
1 Ignoring Small Systems
Multiple smaller AC units may still exceed the 12kW threshold.
2 Missing Expiry Dates
Many managing agents only discover expired certificates during compliance checks.
3 Assuming Maintenance Replaces Inspection
Regular maintenance does not replace TM44 inspections.
Both are required.
4 Overlooking Server Rooms
Server cooling systems frequently trigger TM44 requirements.
Learn more about specialised environments here:
https://tm44.uk/news-blog/tm44-data-centres-server-rooms-uk/
Case Study: Managing Agent Portfolio Compliance
Property Portfolio Overview
A London managing agent responsible for 12 commercial office buildings contacted us after discovering that several TM44 certificates had expired.
Portfolio included:
• 12 office buildings
• 87 air conditioning units
• 5 VRF systems
• 3 central cooling plants
The Problem
The managing agent faced several risks:
• expired TM44 certificates
• lack of system documentation
• unclear inspection history
Local authorities had already issued compliance reminders.
The Solution
Our team carried out a portfolio compliance assessment.
Steps included:
-
auditing all air conditioning systems
-
calculating cooling capacity
-
scheduling inspections for all required systems
-
lodging TM44 certificates on the government register
Results
After completing inspections:
• full compliance was restored
• inefficient systems were identified
• energy improvements were recommended
Energy savings recommendations from the report were estimated to reduce operational costs by £18,400 per year.
How TM44 Inspections Improve Energy Efficiency
TM44 inspections also help identify opportunities to improve building efficiency.
Recommendations may include:
• replacing outdated equipment
• improving control systems
• adjusting operating schedules
• improving maintenance practices
These changes can significantly reduce energy consumption.
Our article explains how inspections reduce energy waste:
https://tm44.uk/news-blog/tm44-inspection-companies-reduce-energy-waste-operating-costs/
TM44 Inspections for Different Commercial Properties
Managing agents may oversee a wide range of building types.
Each may have different inspection considerations.
Examples include:
Office Buildings
https://tm44.uk/news-blog/tm44-office-buildings-corporate-hq-uk/
Retail and Shopping Centres
https://tm44.uk/news-blog/tm44-shopping-centres-malls-uk/
Gyms and Leisure Facilities
https://tm44.uk/news-blog/tm44-gyms-fitness-leisure-clubs-uk/
Hospitals and Healthcare Buildings
https://tm44.uk/news-blog/tm44-private-hospitals-clinics-uk/
Each property type has unique HVAC systems and compliance requirements.
How Much Do TM44 Inspections Cost for Property Portfolios?
Costs vary depending on:
• number of systems
• cooling capacity
• building size
• access complexity
Typical pricing examples:
| Building Type | Typical Cost |
|---|---|
| Small office | £450 – £700 |
| Medium commercial building | £700 – £1200 |
| Large office or hotel | £1200 – £2500 |
| Large portfolio inspections | custom pricing |
Managing agents often benefit from portfolio pricing when booking multiple buildings.
How to Book TM44 Inspections for Multiple Buildings
Managing agents responsible for several buildings should work with inspection providers experienced in portfolio compliance management.
At TM44.uk, we provide nationwide TM44 inspections for commercial buildings and property portfolios.
Our services include:
• TM44 air conditioning inspections
• certificate lodgement on government databases
• portfolio inspection scheduling
• compliance guidance for managing agents
We work with:
• managing agents
• property management companies
• commercial landlords
• facilities managers
You can request a quote here:
Why Managing Agents Choose TM44.uk
Managing agents require reliable inspection partners who understand commercial property compliance.
Our team offers:
• nationwide coverage
• fast inspection scheduling
• full government certificate lodgement
• portfolio inspection management
• clear compliance reporting
We regularly support managing agents responsible for large property portfolios across the UK.
Final Thoughts
For managing agents overseeing multiple buildings, TM44 compliance should be an essential part of property management strategy.
Regular inspections help ensure:
• legal compliance
• reduced energy consumption
• improved HVAC performance
• long-term cost savings
By implementing a structured compliance strategy and working with experienced TM44 inspectors, managing agents can efficiently manage inspections across entire property portfolios.
If you manage commercial properties and need assistance with TM44 inspections, our team is ready to help.
Request a quote today:
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