Maintenance, written to the house
A maintenance schedule is only useful if it describes the equipment that is there. A house with a semi-closed cooling system, an energy screen and hanging gutters has different service intervals from one with pad-and-fan and soil culture, and a generic schedule will over-service half of it and ignore the rest.
The programme is therefore built from the equipment list at handover and covers the structure as well as the facilities — because the parts of a greenhouse that fail expensively are the moving ones: the vent drive, the screen mechanism, the pumps and the dosing equipment.
What a maintenance programme covers
No two schedules are identical, because each is written from its own equipment list. What follows is the structure every one of them has — the parts of a greenhouse that fail expensively, in order of how much it costs to find out late.
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Each on its own clock Moving parts on running hours, the water side on a fixed interval, the envelope before each season, the structure once a year and after any exceptional wind or snow, and the sensors all the time.
Each is serviced on the interval that matches how it fails — running hours, a fixed calendar, the season, the year, or continuously.
The moving parts, first and most often. The vent drive — rack, pinion, bearings, drive tube, motor — is the system whose failure shows in the crop soonest, because a house that cannot vent on a hot day loses a day of growth and sometimes more. Screen mechanisms, pumps, dosing equipment and internal transport follow. These are serviced on running hours or cycles, not on calendar dates.
The water side, on a fixed interval regardless. Filters, UV lamps, dosing calibration and drain recovery. A UV lamp loses output long before it fails, so it is replaced on hours rather than on failure — a disinfection system that is running but under-dosing is worse than one that is off, because nobody is watching it.
The envelope, seasonally. Gutters and downpipes cleared before the wet season, vent seals and thresholds checked, broken panes replaced, and the glazing seats inspected where condensate runs. Blocked gutters on a glasshouse are not a nuisance — they back water into the structure and onto the crop.
The structure, annually and after events. Bolted connections checked, bracing tension checked, and the galvanising inspected where it is damaged first: where members were handled, where fixings go through, and at the base of columns where water stands. After an exceptional wind or snow event, the structure is inspected whether or not anything looks wrong.
The climate computer, continuously. Sensor calibration drifts, and a drifting sensor is worse than a failed one because the system keeps acting on it. This is the least visible maintenance item in the building and one of the most consequential.
What it costs to skip. Maintenance on a greenhouse is not deferred; it is transferred — into yield. A vent that opens slowly, a screen that does not close fully, a dosing pump out of calibration, a sensor reading two degrees low: none of these stops production, and all of them reduce it quietly for as long as they go unnoticed.
Continuing advice
Consulting continues past commissioning, and it is technical and financial rather than only technical. A greenhouse is a business with a capital structure and a crop cycle, and the questions that arrive in year three are usually about both: whether to change cultivar, whether the screen investment pays, what a lighting installation would return in this climate.
The intent is to improve greenhouse performance over its life rather than to hand over a building and leave the operating curve to the grower alone.
Innovation, at the grower's option
Better Farm houses can take the current generation of greenhouse technology, offered in three areas: central climate control, mechanised harvesting, and layered rotation.
Each is the grower's choice. A grower who wants none of them gets a house that runs without them; a grower who wants all of them gets a structure designed from the start to carry the loads and the services they need.