Most HVAC firms run two businesses: projects that are installed in stages, and service contracts that repeat for years. DuoApp handles both - install stages, PPM visits, commissioning sign-offs and F-gas tickets - in one app your engineers will use, with CIS and invoicing handled properly.
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HVAC contractors juggle long installs and years of servicing at the same time. These are the problems they tell us about most.
Quarterly and six-monthly PPM visits tracked on a spreadsheet, until a client asks why their units haven't been serviced.
First fix pipework, units hung, electrics, commissioning - you find out where each job is by ringing the engineers.
Readings and photos on personal phones, so when a unit fails later, the proof is hard to find.
F-gas certificates, CSCS cards and insurance expire without anyone noticing until a client or main contractor asks.
Extra units and re-routes agreed on site are forgotten by the time the application goes in.
On new-build and fit-out work, deductions and retention are tracked in a spreadsheet one person understands.
Everything below is included in the same £10 per user, for install engineers, service engineers and the office alike.
Break installs into the stages you price for, and set up service contracts as tasks that repeat monthly, quarterly, six-monthly or at any interval. The next visit appears as soon as the last is done, and overdue servicing stands out.
Checklists for commissioning and each service visit, with photos, notes and a signature. Every record is timestamped and stored against the job, with a full audit trail.
Store F-gas certificates, CSCS cards, other qualifications and insurance against each engineer. DuoApp warns you before anything expires, and can block work for anyone whose documents aren't current.
Record Part F ventilation commissioning, Benchmark and air tightness results from ready-made templates, or build your own forms. Each signature can require a qualification, the document locks when the last signature is in, and a branded PDF is ready to send to the client or building control.
Add facilities managers and building owners as users who see only their own sites - service visits, reports and photos, never your costs. Same flat £10.
Raise a variation from site on your phone, send it for sign-off and keep a full audit trail, so extra units and re-routes turn into extra money.
On new-build and fit-out work, deductions, verification status, retention and releases sit on every invoice, worked out for you.
Log defects and warranty callouts after handover, schedule the visit and sign it off with photos, so warranty work is tracked rather than lost.
Hours are captured against the install or service visit as the work happens, giving you labour cost per job and payroll without the Friday chase.
Most HVAC contractors we speak to run servicing on a spreadsheet and installs on group chats. Here's what changes.
If your team can use WhatsApp, they can use DuoApp. There's no training day and no IT department needed, and every new team gets a free onboarding session with a real person.
No consultants and no setup fee. Every new team gets a free onboarding session with a real person.
Create your live installs and your service contracts.
Recurring PPM visits and the checklist for each one.
They download the app on iOS or Android and log in. No training day needed.
Install progress, service visits due and what's ready to invoice, in one place.
No tiers, no per-site fees and no setup charge. Add and remove people as your team changes and you are billed pro-rata.
The same platform runs teams across construction and the trades.
Bring a live install and a service contract. In 30 minutes you'll see both set up the way you work - no slide decks, no pressure.