If your building uses air conditioning systems totalling 12kW or more, you are legally required to undergo a TM44 inspection every five years. But beyond compliance, these inspections can reveal energy inefficiencies and reduce your operational costs.

In this blog, we explore the key aspects of a TM44 inspection, why they matter, and how Gradwell Group can help you remain compliant, efficient, and cost-effective.

What is a TM44 Inspection?

A TM44 inspection is a statutory energy assessment for air conditioning systems under the Energy Performance of Buildings Regulations. It applies to individual or combined systems with a total cooling output of 12kW or more.

The goal is to:

• Assess energy performance
• Identify inefficiencies
• Provide practical, cost-saving recommendations

GOV.UK: Air Conditioning Inspections

What Does a TM44 Inspection Cover?

Summary Checklist

• System size and capacity assessment
• Equipment condition and maintenance history
• Energy control systems
• Operational schedule review
• Final TM44 compliance report

System Overview

Inspectors begin by evaluating:

• The total output of all systems combined
• Types and layout of equipment
• Suitability of installation

Oversized or outdated systems can lead to unnecessary energy waste.

Operational Performance

This includes:

• System controls and settings
• Hours of operation
• Cooling loads vs. actual use

Many buildings operate air conditioning longer than needed, resulting in inflated energy costs.

 Maintenance and Condition

Checks cover:

• Cleaning schedules
• Filter and fan condition
• Signs of leaks or blockages

Well-maintained systems run more efficiently and last longer.

Control Systems

An assessor reviews:

• Timers and thermostats
• Zoning and user overrides
• Energy-saving potential of automation

Even small control improvements can save 10–40% on cooling energy annually.

TM44 Report and Certification

Following the inspection, you'll receive:

• A detailed TM44 report
• A compliance certificate valid for 5 years
• Recommendations for performance upgrades

You are not legally required to follow the advice, but doing so can significantly reduce energy bills.

Why Gradwell Group?

We deliver reliable, nationwide TM44 inspections for businesses of all sizes.

What we offer:

• Fast booking and reporting
• Fully accredited energy assessors
• UK-wide coverage
• Automated renewal reminders
• Clear, actionable recommendations

Contact us for a TM44 Air Conditioning Inspection UK | Gradwell Group

FAQs

1. How often is a TM44 inspection required?

Every 5 years for systems ≥12kW.

2. Who is responsible for arranging it?

The building owner, operator or facilities manager.

3. Are there penalties for non-compliance?

Yes, up to £300 per unit, with repeat fines possible.

Final Thoughts

A TM44 inspection isn’t just about staying legal it’s about running your systems more efficiently. With expert assessors, clear reports, and nationwide coverage, Gradwell Group ensures you stay compliant and in control of your building’s energy use.

Book your inspection today and stay ahead of compliance deadlines.