Ventilation fails quietly. Filters clog, belts slip, motors run hot — and nobody notices until the air turns stale or the plant stops dead. Gemini AMPM keeps commercial ventilation running with planned preventative maintenance and 24-hour reactive repair, from a single AHU to a full estate. One contract, one named engineer, no drama.
Planned preventative maintenance is unglamorous, which is exactly the point. Our engineers change filters before they choke, tension belts before they slip, and check fans, coils, motors and bearings before the noise starts. Ductwork gets inspected for contamination, leaks and damage; control panels get tested, not just glanced at. Each visit follows a schedule built around your plant and how hard the building works it.
The payback is measurable. Clean filters cut fan energy and keep indoor air quality where it should be. Well-set belts and healthy motors do not fail on the hottest week of the year. And a documented maintenance history is evidence — for landlords, insurers, auditors and anyone else who asks whether the building is being looked after. We service plant from all the major manufacturers, including Swegon, Systemair, Nuaire and Daikin.
Breakdowns do not book appointments. When ventilation stops, a named Gemini AMPM engineer responds within 24 hours — diagnosing the fault, not just restarting the plant and hoping. Fan and motor replacements, ductwork leak detection and sealing, control faults, seized dampers: the aim is a first-visit fix, so engineers arrive prepared for the common failures. LEV systems get the same treatment, with performance testing in line with HSE expectations.
Reactive work also feeds back into planning. Every repair we complete comes with a straight answer about why it happened and what would stop it happening again — sometimes a component upgrade, sometimes a maintenance frequency change, occasionally the honest news that the plant owes you nothing and replacement is cheaper. To move your ventilation onto one contract with one accountable team, talk to us.
It depends on the environment, but twice a year is the sensible floor for most commercial AHUs, with quarterly filter checks where the air is dusty or the building is busy. Healthcare, kitchens and manufacturing usually need more. We set frequencies from the manufacturer’s guidance and how the plant is actually used, then adjust as service history builds. Over-servicing wastes money; under-servicing costs more — the schedule should earn its keep.
Yes. Reactive repair is half of what this team does. Report a fault and a named engineer — not a call queue — responds within 24 hours, faster where loss of ventilation is critical. We diagnose before we replace, and give you a written account of the failure and the fix. If a temporary measure is needed to keep the building running, we say so plainly rather than leaving you guessing.
Easily, and it happens often. We start with a condition survey: every AHU, fan, filter bank and damper logged into an asset register with photographs and an honest state-of-health note. That becomes the baseline for a maintenance schedule and a costed remedial list, separated so you can see what is urgent and what can wait. It is the fastest way to find out what your last contractor was not telling you.
A named engineer, not a call centre, comes back within 24 hours. Tell us the building and what you’re dealing with, and we’ll scope it properly.