For HVAC, Air Conditioning & Heating

Software built for engineers who live and die on refrigerant logs and unit history.

Reactive call-outs, planned maintenance and F-Gas records for air conditioning, heating and plumbing engineers. Full unit history on the phone, not scattered across paper and memory.

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The reality right now

Turning up to a unit with no idea what it did last time.

HVAC and heating work rewards memory and punishes forgetfulness. An engineer arrives at a VRV unit with no record of the fault codes it threw last visit, refrigerant logs sit on paper until someone transcribes them back at the office, and "is this covered under contract?" means digging out the agreement instead of just looking at the job.

1

No fault history

Engineers arrive blind to what the unit did last time, or last month.

2

Paper F-Gas logs

Refrigerant entries recorded on site, then transcribed later, if at all.

3

Cover uncertainty

Contract status isn't clear until someone in the office digs it out.

4

Missed PPM visits

Scheduled in a spreadsheet, and noticed by the customer first when they slip.

Unit & Fault History

Every unit remembers its own last visit, last fault, last parts fitted.

Each piece of plant, from a VRV system to a domestic boiler, carries its own history on the engineer's phone. No more arriving blind, and no more fixing the same fault three times because nobody read the last note.

  • Full unit history on arrival: last visit, last fault, last parts fitted
  • Engineer notes carried forward, so the next visit starts where the last one ended
  • Serial numbers and install records matched to the actual unit on site
  • Works offline in plant rooms and basements where signal is poor
Unit / VRV-0231 Covered
Daikin VRV IV · Plant Room B
Installed Feb 2021 · Last serviced 3 Mar 2026
Last fault · E7 low pressure
Recharged, leak test passed · Ben Harris
Contract
Fully covered · renews Sep 2026
F-Gas & Compliance

Refrigerant logs entered once, on site, audit-ready from the start.

F-Gas and refrigerant entries get logged the moment the work happens, not transcribed from a paper form days later. Every record is tied to the unit and the engineer who did the work, ready for an audit without a scramble.

  • F-Gas and refrigerant quantities logged on site, no transcription step
  • Records tied to the specific unit and engineer for full traceability
  • Audit-ready reporting whenever a customer or inspector asks for it
  • Job sheet, photos, parts and sign-off all live on the one record
F-Gas Log · VRV-0231
Refrigerant: R410A
Recharged 1.2kg · 14 Apr 2026
Leak test
Passed · no detectable leak
Engineer
Ben Harris · F-Gas Cat I
PPM & Contract Cover

Planned maintenance that runs itself, and cover you don't have to chase.

PPM visits, SLA tracking and contract renewals run against the schedule, not a spreadsheet someone has to remember to check. Contract cover, covered vs chargeable, and renewal dates are all visible the moment a job opens.

  • PPM schedule runs itself, with visit windows and renewal alerts
  • Contract status and SLA tracking visible on every job
  • Covered vs chargeable clear before the engineer even arrives
  • Reactive call-outs and planned visits managed from the same system
PPM Schedule · This Week 3 visits due
Waterside Business Park
Quarterly PPM · Due Thu
Grange Retail Unit
Contract renewal · 9 days
Oakfield Medical Centre
Annual service · Due Mon

"We built this for heating and cooling engineers before, at THS Cooling and Heating Northampton, and the day looks nothing like a generic job sheet app. Fault history, F-Gas records and contract cover all need to sit on the same job, or the office ends up chasing paper."

Common questions

Is Sixfields right for an HVAC or heating business?

Both. F-Gas and refrigerant entries are logged on site against the specific unit, alongside job scheduling, PPM tracking and contract cover, so compliance records aren't a separate system you have to keep in sync.

Yes. Reactive call-outs and PPM visits run from the same system, so an engineer sees contract cover and unit history whichever type of job they've been sent to.

Yes. The engineer app works offline on site, and photos, notes and F-Gas entries sync automatically once signal returns.

No. Sixfields is priced around your business, not your headcount, so a seasonal or subcontractor engineer doesn't multiply your software bill.

Talk to us about your HVAC or heating business.

We'll show you how Sixfields fits your engineers, your contracts and your compliance records, and tell you straight if it doesn't.

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