What is a TM44 Inspection? Everything You Need to Know in 2025

A TM44 inspection checks air-conditioning systems in commercial buildings. It’s not optional. If your property has cooling systems over a certain capacity, you’re legally required to get one done. The government introduced these inspections to improve energy performance and cut carbon emissions across the UK.

Here’s the reality. Without a valid TM44 inspection certificate, you could face penalties. Property transactions can stall. Potential buyers or tenants start asking questions you can’t answer. Your building falls out of compliance, and that creates problems you don’t want.

How the Inspection Process Works

The inspection itself looks at how your air-conditioning system performs. An accredited energy assessor visits your property. They check the equipment. They measure efficiency. They identify any issues that waste energy or money. The whole process is designed to spot problems before they become expensive failures.

You might be thinking this sounds like another box-ticking exercise. Perhaps it feels like bureaucracy is getting in the way of running your business. But the inspection actually serves a purpose. Many building owners discover their systems are running inefficiently. That means higher bills every month. The assessor’s report often highlights simple fixes that reduce running costs.

Why Your Building Needs Certification

The certificate gets lodged on a central register. Anyone can check if your building has a current TM44. This matters during property sales, lease renewals, or compliance audits. If you’re managing multiple sites, keeping track of when each inspection expires becomes crucial. Miss a deadline and you’re suddenly non-compliant.

Who actually needs a TM44 inspection? Any building with air-conditioning systems above a specific cooling output threshold. This includes offices, retail spaces, hotels, hospitals, and industrial facilities. If you’ve got climate control systems keeping your building comfortable, there’s a good chance you need certification.

Inspection Frequency and Timing

The inspection frequency depends on the system size. Larger systems need checking more often. Smaller ones get a bit more breathing room between assessments. An Energy Performance Certificate works differently and covers different aspects of building performance. The two aren’t interchangeable.

Some building owners wait until the last minute to book. That’s risky. Assessors get booked up quickly, especially near compliance deadlines. Emergency inspections exist, but they’re not ideal. Planning ahead means you avoid the stress of scrambling to meet legal requirements.

What the Report Tells You

The report you receive isn’t just a pass or fail document. It includes recommendations. Some are simple maintenance tasks. Others might suggest equipment upgrades or system replacements. You’re not legally obliged to follow every recommendation, but ignoring them could mean wasted energy and higher operational costs.

Air-conditioning systems degrade over time. F-Gas regulations add another layer of requirements for certain refrigerants. Regular inspections catch deterioration early. Small problems don’t spiral into major breakdowns. Your building stays comfortable and compliant.

Staying Compliant

Getting your TM44 sorted protects your investment. It keeps your property marketable. It shows due diligence to anyone reviewing your building’s compliance status. And honestly, it’s just easier to stay on top of it than deal with the consequences of letting it lapse.

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