How we know this
This job isn’t in the U.S. government’s occupational survey yet, so this page carries no official pay figures. Everything below is drawn from published job descriptions and industry guides, each one linked at the foot of the page. The work described is real and sourced. What’s missing is the survey’s rating of which parts of the job matter most — so read this as a picture of the work, not a ranked list.
Think you get this job?Six quick questions on how it really works — with a hint and the reason behind every answer.
Test yourself →The work, task by task
These are the real jobs-to-be-done, not a wish list. Each task shows where we found it, and the prompt underneath is written for that exact task.
Install heat pumps and connect components
+Install the two outdoor heat pump units at 412 Maple Street, mount and secure the indoor hydronic modules,…
Install heat pumps and connect components
+Install the two outdoor heat pump units at 412 Maple Street, mount and secure the indoor hydronic modules, wire the compressor, fan and thermostat circuits to the building distribution board, pressure-test joints, then update the system schematic and handover checklist before leaving.
The tools that do the workCworks CMMSAutoCADweb
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Perform pressure tests on refrigeration circuits
+Perform a nitrogen pressure and hold test on the refrigerant circuits for units A and B at 412 Maple Street…
Perform pressure tests on refrigeration circuits
+Perform a nitrogen pressure and hold test on the refrigerant circuits for units A and B at 412 Maple Street to 300 psi, monitor for drop over 30 minutes, log readings and any leaks found, evacuate and advise on repair before charging.
The tools that do the workData logging softwareweb
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Check and replace air filters regularly
+Visit 412 Maple Street boiler room and inspect the four heat pump intake filters, replace two clogged pleated…
Check and replace air filters regularly
+Visit 412 Maple Street boiler room and inspect the four heat pump intake filters, replace two clogged pleated filters with MERV 8 spares, note serial numbers, record filter sizes and next replacement date on the maintenance log.
The tools that do the workCworks CMMSweb
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Inspect outdoor units for debris and blockages
+Inspect the two rooftop outdoor units at 412 Maple Street for leaves, bird nests and vegetation blocking…
Inspect outdoor units for debris and blockages
+Inspect the two rooftop outdoor units at 412 Maple Street for leaves, bird nests and vegetation blocking airflow, clear debris, tighten any loose fan guards, photograph obstructions found and update the service report with corrective actions.
The tools that do the workCworks CMMSweb
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Clean condenser coil fins with a garden hose
+Clean the condenser coil fins on the south unit at 412 Maple Street using a low-pressure garden hose,…
Clean condenser coil fins with a garden hose
+Clean the condenser coil fins on the south unit at 412 Maple Street using a low-pressure garden hose, straighten bent fins where safe, check for fins damaged beyond repair and record coil condition and materials needed for any future replacement.
The tools that do the workCworks CMMSweb
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Check refrigerant lines for ice buildup or frost
+Inspect refrigerant suction and liquid lines for ice or frost on both units at 412 Maple Street while running…
Check refrigerant lines for ice buildup or frost
+Inspect refrigerant suction and liquid lines for ice or frost on both units at 412 Maple Street while running in heating mode, identify possible low charge or restriction, record temperature differentials and recommend corrective action if frost persists.
The tools that do the workData logging softwareweb
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Says who?
These are the pages we read to build this. Open any of them and check us.
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Same family of work — each with its own tasks and prompts.
The LLOS Work Atlas is the world's largest evidenced task library — a map of human work, with a ready prompt behind every task. 1,774 careers · every task named by the sources that witnessed it — O*NET, ESCO, real job descriptions, Wikipedia — and the deepest tasks by several at once. And it is honest about limits: where AI cannot help, the map says so.
The rest of the map
Same library, five ways in.
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Built on public evidence: O*NET®, ESCO, Wikipedia, U.S. Bureau of Labor Statistics, ILOSTAT. All sources & licenses
Built on public evidence: O*NET®, ESCO, Wikipedia, U.S. Bureau of Labor Statistics, ILOSTAT. All sources & licenses