Cost & commercial
A cut-price LEV test is tempting, but a bargain examination often costs more than it saves. The danger is not the small number on the invoice - it is what that number quietly leaves out, and the fact that when it does, the risk still sits with you as the employer.
The short answer
A cut-price LEV test is tempting, but a bargain examination often costs more than it saves. The danger is not the small number on the invoice - it is what that number quietly leaves out, and the fact that when it does, the risk still sits with you as the employer.
The detail
The savings in a very low quote usually come from somewhere real. It may cover fewer points than your system actually has, skip the static-pressure and velocity readings that make a result meaningful, or rely on flexible ducting checks that fall short of the standard. Often it produces a one-page certificate instead of a full report, which reads as tidy until an inspector asks for the whole document and finds there is nothing behind it.
A cheap examination may also skip the benchmark. Without measuring against the system's design or commissioning data, a reading has nothing to be judged against, so a system can be labelled a pass while quietly under-performing. And the examiner may not hold P601, the qualification the HSE expects of a competent person - which can leave the whole exercise carrying no real weight.
When any of that surfaces, you pay twice. A test that missed points or lacked a report has to be redone properly, adding a second attendance to the first. Worse, the gap it hid may have let exposure continue, so remedial work, a failed retest, or an enforcement visit can follow - each of which dwarfs the few pounds saved on the original quote.
A thin test can cost you elsewhere as well. Insurers and clients increasingly ask for evidence of control, and a one-page certificate with nothing behind it can be challenged just when you need it to hold - after an incident, or during a tender. What looked like a saving on the invoice can quietly undermine a claim or a contract, turning a small gap in the paperwork into a much larger problem at the worst possible moment.
What it means for you
The point that catches employers out is responsibility. Even where a contractor was trusted to get it right, the duty to control exposure remains with the employer, and so does the cost recovery if an inspector finds a material breach. A cheap certificate that does not stand up does not transfer the risk - it simply leaves you exposed with paperwork that looks like protection but is not.
Judged properly, a complete examination is the economy, not the cost. It tests every point, benchmarks the readings, comes from a qualified examiner and gives you a report an inspector will accept. That is what you are actually buying, and it is the version that keeps a routine spend from turning into a much larger one.
The sensible test is a simple one: ask what the low price leaves out, and whether you would be comfortable handing the result to an inspector. If the honest answer is that points were skipped, no benchmark was set, or the report is a single sheet, the cheap examination has not saved anything. It has only deferred the cost to a moment you do not get to choose.
The service behind the guide
Sibling guides
Improvement notice cost vs a test · What LEV testing costs in 2026 · Why DIY rigs rarely pass
Questions
Rarely. A low price often means fewer points tested, no benchmarking or a thin report, which can fail an HSE check and cost more to put right.
Often some points, the velocity and pressure readings, the benchmark against design data, or the full report, leaving a certificate with little behind it.
No. The duty to control exposure stays with the employer, along with any cost recovery, even when a contractor was trusted to do the work.
A test that missed points or lacked a report has to be redone, and any exposure it hid can lead to remedials, a failed retest or enforcement.
Every point tested, readings benchmarked against design data, a P601 examiner and a full report that an inspector will accept.
Phoenix Duct Clean · by the numbers
We will quote a complete examination that an inspector will accept - no missing points, no thin report.