Running Multisite TM44 Inspections Across England, Wales and Scotland

This post explains how to manage TM44 inspections across an estate that spans England, Wales and Scotland. It covers how the rules, inspection intervals and penalties differ by nation, and who holds the inspection duty at each site.

Key Takeaways

• England and Wales share one set of rules, with systems above 12kW needing an inspection at least every five years and fines of up to £500 for missing reports.
• Scotland runs its own regulations, and the report can set the next inspection anywhere from three to five years away.
• The duty usually sits with whoever controls the technical running of each system, and leases or FM contracts can shift it.
• Mapping sites by nation and booking visits in planned batches stops inspection dates from drifting apart.

If your estate runs from an office in Cardiff to a retail unit in Glasgow, the tracking spreadsheet is likely more full of holes than any of us would care to admit. Multisite TM44 inspections sound like one job repeated at each address. Not really, because once a site is located north of the border, the rules are different. Wales follows the same framework as England, while Scotland runs its own regulations, and a single plan has to cope with both. This is how to conduct multisite TM44 inspections across both systems without missing any part of the site.

Ultimately, this is where multisite TM44 inspections run into most trouble. Problems typically start with dates that are far apart and records spread across different inboxes. It needs a framework, not extra effort. First, start with the rules themselves.

Rules for TM44 Inspections at Sites in England & Wales

There is one rulebook for sites in England and Wales. Inspection is required for any air conditioning system with a rated output greater than 12kW and, whether by virtue of the equipment efficiency or operational hours, more frequently than once every five years. For example, a cluster of small wall units in one shop may all be brought into scope if one person controls them and they form part of one system.

The regulations are policed in both countries by Trading Standards officers. You face a £300 fixed penalty for not having a report, and another £200 for failing to present one within 7 days of your request. The guidance allows data gatherers to help the assessor with a large portfolio, but only under supervision and with the assessor verifying their work.

The Difference Between Scottish Air Conditioning Inspections

When you cross into Scotland, the legal basis changes. Under The Building (Scotland) Regulations 2004, building owners must ensure that one or more accessible parts of each system are inspected at least once every five years. Inspectors are still working from the CIBSE TM44 guidance, so the visit in itself should be familiar.

The differences are in the details:

• The report establishes when the next review is due, which could be anywhere from three to five years away.
• In systems totalling 12kW or more, if separate systems are linked to a central control, only that system requires inspection.
• Without an inspection, you could be served with an enforcement notice under the Building (Scotland) Act 2003.

That three-year option is easy to miss. A poorly maintained Glasgow site could fall due two years before your Leeds office, even if an assessor visited both in the same month.

Who Answers for Each System in a Multisite Portfolio

Now portfolios go messy here. In England and Wales, responsibility lies with whoever oversees the system at the technical level, not whoever might set a thermostat. That is normally the landlord, although it can be passed to a tenant under a full repairing and insuring lease.

So What to Do Next with Your Multisie Estate

Map every site by nation, identify who owns and controls each system, and highlight everything due in the next twelve months. Next, schedule the visits in batches rather than one urgent call at a time. To book inspections at your sites, visit https://tm44.uk/.