Air conditioning systems are vital for maintaining comfortable indoor environments in both commercial and residential properties. However, in the UK, these systems must comply with regulations to ensure they are energy-efficient and safe. TM44 inspections, required under the Energy Performance of Buildings Regulations, are one of the critical steps in this process.
This article explores how long a TM44 Inspection typically takes and highlights the 15 most common problems identified during these assessments. Whether you are a building owner, facilities manager, or tenant, understanding these can help you prepare for compliance and avoid unnecessary costs.
How Long Do TM44 Inspections Take?
The duration of a TM44 inspection varies based on factors such as the building’s size and layout, the complexity of the air conditioning systems in place, and how easily the equipment can be accessed.
· Small Buildings (Single System): 1–2 hours
· Medium Buildings (Multiple Systems): 3–6 hours
· Large Complex Sites: 1–2 days
The process includes assessing the efficiency of your air conditioning system, checking documentation, and providing recommendations for improvements.
Remember, TM44 inspections are mandatory for systems with a combined cooling capacity of over 12kW and must be carried out every five years by an accredited energy assessor.
Why Are TM44 Inspections Important?
Aside from being a legal requirement, TM44 inspections offer several benefits:
· Improved Energy Efficiency: Identifies systems consuming excessive energy.
· Cost Savings: Helps reduce utility bills with recommended upgrades.
· Health & Safety: Ensures systems do not pose health risks due to poor maintenance.
Most Common Problems Found in TM44 Inspections
Here are the most frequent issues assessors uncover during TM44 audits. Being aware of these can help property owners prepare and take corrective action in advance.
Lack of Regular Maintenance
Many systems lack a proper maintenance schedule. Clogged filters, obstructed coils, and aging components can lower system performance and result in increased energy costs.
Inefficient Control Settings
Poorly programmed or outdated controls often result in air conditioning running longer than necessary. This increases wear and operational costs.
Systems Operating When Not Required
A common issue is systems left running outside occupied hours. Simple scheduling adjustments can save significant energy.
Over-Sized Equipment
Assessors often find air conditioning units that are too large for the space they serve. Oversized systems cycle on and off frequently, leading to inefficiency and shorter equipment life.
Poorly Positioned Thermostats
Thermostats installed near heat sources, windows, or in direct sunlight can provide inaccurate readings, causing systems to overcool or overheat spaces.
Leaking Refrigerants
Refrigerant leaks not only reduce efficiency but are also harmful to the environment. Early detection is crucial for compliance and system longevity.
Inadequate Insulation on Ductwork and Pipework
Poor or missing insulation leads to energy losses, especially in older buildings. This is a frequent recommendation in TM44 reports.
Obstructed Airflow
Furniture, stock, or other obstructions often block air vents and grilles, resulting in uneven cooling and overworking of systems.
Lack of Staff Training
Staff often don’t know how to operate systems effectively. Simple training sessions can improve energy use and comfort levels.
Poor Documentation
Missing or incomplete records of servicing, commissioning, and maintenance make it harder for assessors to evaluate system performance.
Inefficient Fan Motors
Older fan motors tend to be less energy-efficient compared to modern variable speed models. Upgrading may provide significant savings.
Systems Nearing End of Life
Aging systems are less reliable and efficient. TM44 inspections often flag systems that are no longer cost-effective to repair.
Incorrect Refrigerant Type
Some older systems still use banned or phased-out refrigerants like R22, which must be replaced under current regulations.
Excessive Noise Levels
Noise from poorly maintained units can indicate mechanical issues and negatively impact occupant comfort. This is a less obvious, but important issue noted during inspections.
How to Prepare for a TM44 Inspection?
· Perform an initial check to spot any noticeable complications before the inspection.
· Check accessibility to all parts of your air conditioning system.
· Train staff on basic system operations.
The Cost of Ignoring TM44
Non-compliance with TM44 regulations can result in fines of £300 per unit and reputational damage. Beyond legal penalties, inefficient systems waste energy and money daily.
Conclusion:
By understanding and addressing common problems like poor maintenance, inefficient controls, and refrigerant issues, you can avoid compliance issues and enjoy a more sustainable and cost-effective cooling system. Proactive management before your next TM44 inspection in London ensures a smoother process, better outcomes, and long-term benefits for your property.
KTIC offers expert TM44 inspection services across the UK, ensuring your air conditioning systems meet regulatory standards. With a focus on energy efficiency and compliance, we help businesses reduce costs and stay ahead of legislation.
