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# HVAC Work Order: What Should Be Included?
A work order does three jobs. It tells the technician what they are walking into, it records what actually happened, and it becomes the document you invoice and defend against.
Most work orders are built for the first job and treated as a formality for the other two. That is fine until a customer disputes a charge, or a warranty claim needs the install date, or the next technician on that unit has no idea what was done last time.
The fields
| # | Field | What it prevents |
|---|---|---|
| 1 | Work order number | "Which visit are we talking about?" |
| 2 | Date and appointment time | Disputes about arrival and duration |
| 3 | Customer name and billing contact | Billing the tenant when the landlord pays |
| 4 | Service address, if different | A crew at the wrong property |
| 5 | Phone and access notes | Gate codes, dogs, who has to be home |
| 6 | Technician | Accountability, and who to ask later |
| 7 | Equipment — make, model, serial | Warranty claims, and the next visit |
| 8 | Problem reported, in the customer's words | Scope creep, and "that is not what I called about" |
| 9 | Diagnosis | The single most-skipped field, and the one that matters most |
| 10 | Work performed | What the customer actually paid for |
| 11 | Parts — description, quantity, unit price | Line-item disputes |
| 12 | Labour — hours and rate | The perception that the price is all parts |
| 13 | Recommendations not carried out | Future revenue, and liability if something fails |
| 14 | Customer notes | What was explained on site |
| 15 | Total | — |
| 16 | Customer approval signature | A provable yes |
| 17 | Status | Whether this is finished |
The three that carry the most weight
Diagnosis and work performed are different fields
Collapsing them is the most common work-order failure.
"Replaced capacitor" is work performed. It tells you nothing about why, which means the next technician learns nothing and the customer cannot see what they bought.
Diagnosis: Dual run capacitor failed — reading 5 µF on the herm side against a 45+5 rating. Compressor and condenser fan motor both test within spec; amp draw normal on both.
Work performed: Replaced dual run capacitor with matching 45+5 µF unit. Verified compressor and fan start-up, checked refrigerant charge against superheat, confirmed 18°F split at the return.
That takes a technician ninety seconds on a phone and it settles three future arguments.
Recommendations not carried out
The field almost nobody has, and it does two things at once.
It protects you: if you told the customer the heat exchanger was cracked and they declined the repair, that needs to be on a document they signed.
It is also the cleanest source of future work you have. A list of recommended-but-declined items, with dates, is a follow-up list that already has a reason to call.
The signature
A signature, a typed name, a click, an emailed "go ahead" — anything retrievable. A verbal yes at the kerbside is not a document, and the time you need it will be the time the customer remembers the conversation differently.
A complete example
────────────────────────────────────────────────────────────
SUMMIT COMFORT HEATING & AIR WORK ORDER WO-4821
4100 Kestrel Industrial Pk Date: 11 September 2026
(555) 0134-8800 Arrived: 10:34 AM
License #MC-448120 Completed: 12:05 PM
────────────────────────────────────────────────────────────
CUSTOMER SERVICE ADDRESS
John Smith 812 Larkspur Ln
(555) 0197-4410 Fairmont Valley, CO
Access: gate code 4417, dog in back yard
TECHNICIAN Mike Johnson — Senior HVAC Technician
────────────────────────────────────────────────────────────
EQUIPMENT
────────────────────────────────────────────────────────────
Condenser Carrier 24ABC6 Installed 05/2016 S/N CA-4471902
Furnace Carrier 59SC5A Installed 05/2016 S/N CF-2280514
────────────────────────────────────────────────────────────
PROBLEM REPORTED
────────────────────────────────────────────────────────────
"AC runs but the air coming out is warm. Started yesterday
afternoon." — customer, by phone
────────────────────────────────────────────────────────────
DIAGNOSIS
────────────────────────────────────────────────────────────
Dual run capacitor failed — reading 5 µF on the herm side
against a 45+5 rating. Condenser fan running, compressor
not starting. Compressor windings and fan motor both test
within spec; no evidence of a secondary fault.
────────────────────────────────────────────────────────────
WORK PERFORMED
────────────────────────────────────────────────────────────
Replaced dual run capacitor with matching 45+5 µF unit.
Verified compressor and condenser fan start-up and run amps.
Checked refrigerant charge against superheat — within range,
no adjustment made. Confirmed 18°F temperature split at the
return. Cleared condensate trap while on site.
────────────────────────────────────────────────────────────
PARTS QTY EACH TOTAL
────────────────────────────────────────────────────────────
Dual run capacitor 45+5 µF 1 $86.50 $86.50
LABOUR 1.5 hrs @ $145.00 $217.50
─────────
TOTAL $304.00
────────────────────────────────────────────────────────────
RECOMMENDED, NOT CARRIED OUT
────────────────────────────────────────────────────────────
Condenser coil is heavily soiled and restricting airflow.
Recommended coil clean — quoted separately at $189.
Customer declined today, asked to be called in spring.
────────────────────────────────────────────────────────────
NOTES FOR THE CUSTOMER
────────────────────────────────────────────────────────────
The capacitor was the failure. Compressor and fan motor both
tested fine, so no further work is needed on those. The coil
cleaning is worth doing before next summer but is not urgent.
────────────────────────────────────────────────────────────
APPROVAL
────────────────────────────────────────────────────────────
I approve the work described above.
Signature: John Smith Date: 11/09/2026
────────────────────────────────────────────────────────────
Getting it filled in every time
Seventeen fields is a lot to complete on a phone in a driveway at five o'clock, which is why work orders written from scratch are always missing four of them.
What makes it reliable is not discipline, it is the form: equipment populated from the customer record rather than retyped, the problem carried over from the booking, parts picked from a price book rather than remembered, labour hours defaulting from the appointment, and the document refusing to close without a diagnosis and a signature.
See the completion form → Open any on-site job and complete it — diagnosis, work performed, parts, labour, signature. The work order generates from what you enter, and the customer notification fires on close.
Where the work order goes next
A closed work order should become three things without anyone retyping it: an invoice, a line in the customer's service history, and — where work was recommended and declined — a follow-up task with a date.
If those are manual today, that handoff is usually a bigger win than the work-order form itself.
HVAC Estimating Software → covers the other end of the same chain, where a quote becomes an approved job.
Related
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