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In this climate a maintenance schedule is mostly about drains, coils and filters
Nothing glamorous, and it is the difference between a summer with one callout and a summer with six.
Small commercial across the Valley
Shops and offices
Retail units and small offices along the main roads. Rooftop packaged units and splits, filter programmes, drain schedules and a written record per unit so the next person is not guessing.
Medical and dental suites
Rooms that must hold a temperature while somebody lies still in them, where humidity matters as much as temperature and where a failure cancels a day of appointments.
Workshops and light industrial
Tall doors, high bays and a process that makes heat. Destratification, spot cooling at the workstation rather than the whole volume, extraction and make-up air, sized for how the space is worked.
Warehouses and storage
Where the requirement is usually temperature stability and dry air rather than comfort, and where the doors dominate everything. We measure the door schedule before sizing anything.
Restaurants and kitchens
Where hood exhaust and dining-room comfort are one problem. We measure the make-up air, because a room that cannot hold temperature at service usually has a building being pulled into a vacuum by its own hood.
Yards, offices and welfare blocks
The site office, the break room and the parts store — small buildings on their own splits, often the last thing on anybody’s schedule and the first thing people complain about.
Six items, and why each one is on the list here specifically
Drains proved, not inspected
Water poured through and watched out the other end, the line cleared and flushed, the trap checked, and a float switch fitted where there is not one. In a nine-month cooling season this is the failure that damages ceilings and stock.
Coils cleaned properly
Both of them, with the right chemistry and enough water, not a hose across the outside. A dirty coil in this heat raises pressures, raises running cost and shortens the machine’s life measurably.
Filters at your interval
Not the label’s. On a site near fields, a road or a workshop, the honest interval is shorter, and a restricted filter reduces the drying the system does as well as the cooling.
Charge against the manufacturer’s target
Measured with superheat or subcooling, not judged by feel. Refrigerant added repeatedly without finding the leak is the most telling pattern in any maintenance history.
Electrical connections and amp draw
Against the nameplate. Contactors and capacitors are what fail in a long hot season, and a marginal one found in March is a part rather than an emergency.
Written readings, dated
With the outdoor conditions noted, so this year and last year are comparable. The record belongs to you, and if you change contractor it goes with you.
What we do not take on
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Commercial refrigeration
Cold rooms, coolers, freezers and process cooling are a different trade with different equipment, refrigerants and certification. We say so on the telephone rather than after driving out.
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Mould testing and remediation
We find and fix the moisture source, which is our trade. Testing for mould and removing it is an assessor’s and a remediation contractor’s work, and in Texas that is a licensed field of its own.
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Specification-driven conditions
Where a temperature or humidity figure comes from a product standard, an auditor, an insurer or a regulator, that number is theirs. We design to a figure you give us and say honestly whether the building can hold it.
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Industrial ventilation certification
Spray booths, welding extraction and anything where exposure limits apply belong to an industrial hygienist. We will fit comfort ventilation around them and say plainly where the line is.