Reactive maintenance fixes equipment after it fails, so failures arrive at random, often at the worst time, with no warning about what else is wearing out. Planned maintenance moves attention earlier: scheduled service, condition checks and age tracking turn many failures into scheduled repairs. It does not eliminate breakdowns, but it makes them rarer, smaller and easier to budget for.
- The real difference is when you learn about a problem: before it fails, or when it already has.
- Planned maintenance does not mean nothing breaks. It means fewer surprises and more repairs that happen on your terms.
- Condition-based approaches use readings and trends to decide what to service now, rather than servicing everything on a fixed clock.
- Tracking asset age and condition together turns replacement from an emergency into a budget line.
- You can start small: inventory the equipment, rank by consequence of failure, and plan the first tier first.
What failure actually costs, in qualitative terms
Compare two failures of the same compressor. In the first, a technician measures rising amp draw and falling capacity on a scheduled visit, orders the part, and replaces it on a convenient morning. In the second, the compressor locks up on the hottest afternoon of the week, the space overheats, a tenant calls, and the only available option is an expedited repair with whatever stock can be found.
The equipment cost is similar. The surrounding cost is not. Reactive failure carries interrupted operations, spoiled product in refrigeration, tenant or customer complaints, expedited parts and labor, and collateral damage when a failed component takes other parts with it. None of that appears on the invoice for the repair, which is why reactive maintenance looks cheaper than it is.
Reactive repairs tend to fix the symptom that stopped the equipment, not the condition that caused it. If a motor burned out because of a restricted coil, replacing the motor without addressing the coil sets up the next failure. Planned work, paired with root-cause diagnostics, is where that pattern gets broken.
Three approaches, and how they differ
| Approach | How it works | Where it fits | Weakness |
|---|---|---|---|
| Reactive | Equipment is repaired or replaced after it fails. | Non-critical, easily replaced equipment where a short outage has little consequence. | Failures are unscheduled, and little is learned about nearby equipment. |
| Time-based planned | Service is done on a fixed calendar regardless of condition. | Equipment with predictable wear, such as filters, belts and coil cleaning. | Can over-service healthy units and still miss problems that develop between visits. |
| Condition-based | Readings and observations decide what needs attention, and when. | Equipment where trends are meaningful, such as compressors, motors, refrigeration circuits and water systems. | Needs consistent records and someone who reads them. |
Most buildings end up with a blend. Filters and belts run on a calendar. Compressors, fan motors and refrigeration circuits are watched by trend. A few low-consequence items are deliberately left to run until they fail, and that is a decision, not an oversight. The point is to choose which approach applies to each asset instead of letting reactive default for everything.
What condition-based maintenance looks like in practice
Condition-based does not require exotic sensors. At its simplest it is a technician recording the same readings on every visit and comparing them with the last visit. Motor amp draw creeping up, a temperature split narrowing, a defrost cycle getting longer, a drain that needs clearing every time: each one is a small signal that something is changing.
- Electrical: motor and compressor current compared with nameplate and previous visits.
- Thermal: supply and return temperature difference, box temperature, suction and discharge temperatures.
- Airflow: filter and coil condition, belt tension, fan operation.
- Water: drain performance, scale, flow and pressure in hydronic loops and ice machine supply.
- Controls: setpoints drifting from design, schedules overridden, sensors out of range.
The value is in the comparison, which means the records have to be organized per asset and kept. A technician scanning a QR tag in the DaVinci Portal sees what the last visit recorded, adds today's numbers and photos, and the trend builds up with no extra paperwork. Buildings with controls can add more through the building controls and automation service, where trended points do some of the watching between visits.
Asset age tracking and the replacement conversation
Equipment age by itself is a rough guide. Two units installed the same year can be in very different condition depending on duty cycle, environment, refrigerant history and how they were cared for. Age gets useful when it is combined with condition, repair history and consequence of failure.
- Record the install year for every asset, even if you must estimate from the data plate.
- Log repairs against the asset, not the building, so repeat problems show up on one record.
- Note refrigerant type. Older refrigerants can affect repair and replacement planning as the industry transition continues; confirm current requirements.
- Mark assets whose failure would stop operations, endanger product or affect a critical space.
- Review the list each year and sort assets into: healthy, watch, plan to replace, replace now.
That four-bucket sort is the heart of capital planning. It turns "the roof units are getting old" into a specific list with an order. For rooftop equipment specifically, the commercial rooftop unit guide covers repair-versus-replace thinking, and restaurant refrigeration replacement planning shows how the same idea applies to kitchens.
Where to start if you are mostly reactive today
Nobody switches from reactive to planned overnight, and nobody needs to. A sensible first pass takes four steps.
- Build the inventory. Walk the property and list every asset with type, location and install year. Do not skip this step.
- Rank by consequence. Which units, if they failed tomorrow, would hurt most? Refrigeration with product, cooling for critical rooms and heating or cooling for occupied tenant space usually lead the list.
- Plan the top tier first. Put the highest-consequence assets on a defined schedule with documented readings.
- Review after the first cycle. Look at what the visits found, what was repaired and what the repair history suggests about the rest.
Expand the program in steps as the records show where attention is paying off. The maintenance plans page shows how quarterly, bi-annual and annual tiers map onto equipment types, and the preventive maintenance program guide covers the program mechanics in more depth.
What planned maintenance does for the budget
Budget predictability is the quiet benefit. A reactive building has an operating budget that swings with whatever broke this year, and a capital budget that is repeatedly overtaken by emergency replacements. A planned building still has repairs, but they tend to come as quoted items with lead time, and the replacement list is visible a year or two ahead.
- Scheduled visits become a fixed, forecastable line in the operating budget.
- Findings from visits turn into a pipeline of quoted repairs that can be sequenced.
- The four-bucket asset list gives finance a replacement forecast with reasons attached.
- Fewer emergency calls means fewer premium-timing events to absorb.
Be honest about what this does not promise. A planned approach will not eliminate failures, and it does not guarantee a particular outcome. What it gives you is advance notice, better information and a say in timing. For multi-property owners, the same logic scales across a portfolio; see multi-site and portfolio maintenance programs.