03
HVAC Maintenance and the Diamond Club
A documented inspection, not a look and a rinse. Every item on the list gets checked, in front of you.
The difference between a rinse and a real coil clean
Hosing off the visible face of an outdoor unit knocks loose the surface dust and calls it done. Cleaning a condenser coil properly means working water and cleaner through the fin structure from the inside, where debris actually packs in and chokes airflow, without bending the fins flat in the process. One takes five minutes and looks the same afterward from across the yard. The other is most of what the Diamond Club visit is actually for.
Two packages, one checklist
The Diamond Club runs two tiers, Value and Plus, and Plus carries everything in Value plus a longer list again. Between the two, the checklist runs to thirty-six separate items, laid out below rather than summarized, because the point of a documented inspection is that it can be checked.
Air Innovations is licensed in Texas under TACLB26062E. Call (281) 830-2412.
A dirty coil and a rinsed coil are not the same coil
Refrigerant gives up heat to the outside air across the condenser coil, and that exchange depends on air actually moving through the fins rather than around them. Pollen, cottonwood fluff, grass clippings and road dust settle into the coil from the outside in, and a garden hose aimed at the front of the unit mostly rearranges what is on the surface rather than clearing what has packed in behind it.
A proper cleaning works from the back of the coil forward, with enough water and the right cleaner to carry debris out the way it came, at a pressure that will not fold the aluminum fins over on themselves and choke the next season worse than this one. It is unglamorous work, and it is also most of why a maintained system keeps its head pressure in range through August instead of climbing quietly all summer.
The Diamond Club checklist
Thirty-six items, worked in the same order every visit
Value Package
Every visit starts here. 15 checks.
Air path and cabinet
- Integrity of Blower Cabinet
- Integrity of Evaporator Coil
- Return Sealed Properly
- Condition of Ductwork
- Supply/Returns Plenums Properly Sealed
Safety and air quality
- Carbon Monoxide Inspected
- Drain Ceiling Saver Installed
- IAQ Overall Conditions
- Cleanliness of Filters
- Indoor Delta T
Electrical and seals
- HVAC Equipment Surge Protectors
- Contactor Integrity
- Capacitor uF Value
- Schrader Caps / Lock Out Caps
- Unit is Level and Clear of Obstructions
Plus Package
Everything in Value, plus 21 more.
Outdoor unit
- Compressor Amps
- Condenser Fan Condition/Amps
- Compressor Saver/Start Assist
- Outdoor & Indoor Temp
- Cleaning Condenser Coil w/ Water
Refrigerant circuit
- Visual Inspection for Refrigerant Leaks
- Line Set is Insulated
- Integrity of Wiring High/Low Voltage
Indoor unit
- Indoor Cabinet Overall Condition
- Integrity of Circuit Board
- Inspection of Drain Lines
- Integrity of Dampers
- Integrity of Blower Wheel and Bearings
Heating and combustion
- Igniter Ohms
- Limit Switches
- Cleaning of Flame Sensor
- Pressure Switch
- Flue Properly Installed / Working
Controls and finish
- Thermostats Calibrated
- Batteries Replaced
- Condition of Return/Supply Grills
A technician who cannot point to which of these thirty-six was actually done is offering a rinse with a checklist attached. Ask to see the sheet.
Maintenance is what keeps the next call from being an emergency
A capacitor caught at a marginal reading gets replaced on a Tuesday afternoon. The same capacitor, left alone, tends to fail on the hottest day of the year instead.
Already have a fault? AC repair and repair and replacement cover that. See the full list of services.
The maintenance technician, Kris, came on time, he had a checklist for all the items he needed to go through on this preventive maintenance visit. The compressor did not have a surge protector installed, he suggested this could be a good improvement and I agreed. He installed it. The overall visit was efficient and effective. Good job.