Built for Australian HVAC & Refrigeration Techs
From split installs to ducted retrofits and commercial fridge service contracts — quote the job, log the refrigerant, invoice on-site, and get paid faster. Built for Australian HVAC techs who'd rather be brazing copper than chasing paperwork.





Everything You Need
Forget clunky desktop software. OneBookPlus is the HVAC business app designed for techs who spend their days in plant rooms and on roofs — not in an office.
Build detailed quotes for split-system installs, ducted system upgrades, commercial refrigeration fit-outs, and service callouts. Itemise units, refrigerant, copper, brackets, and labour — customers accept with one click.
Store your ARC (Australian Refrigeration Council) licence number on every invoice and quote. Log refrigerant type, quantity charged or recovered, and gas cylinder serials per job — audit-ready records when the regulator asks.
Set up recurring service jobs for commercial fridges, cool rooms, and ducted systems. Quarterly, six-monthly, or annual — OneBookPlus auto-creates the next visit, reminds the customer, and keeps the service history per unit.
Every invoice automatically calculates 10% GST and displays your ABN and ARC licence number. Export GST summaries at BAS time — your accountant will thank you.
See your entire week — split installs, ducted retrofits, fridge service callouts, contract maintenance visits. Assign jobs to techs and apprentices and track progress from Quoted through to Invoiced.
Log indoor and outdoor units, copper pipe runs, ductwork, refrigerant cylinders, controllers, and supply runs from Reece HVAC-R, Beijer, or Heatcraft against each job. Snap receipt photos so you know your true margin.
Track your 90-day quote conversion rate. See week-over-week revenue trends so you know if your install pipeline is growing or tightening before it becomes a cash flow problem.
Full service history per unit — model, serial, refrigerant charge, install date, last service. Sites with multiple units (cool rooms, freezers, splits, ducted heads) are tracked individually so techs walk in already knowing the asset.
Customers book service visits, fridge breakdowns, or install consultations through your branded booking page. Time slots respect your crew availability and travel zones — no more phone tag with property managers.
See it in action
Not mockups — these are the real product screens for your day-to-day.
Split installs, services, commercial refrigeration — every job with status, parts list and SLA reminder.

Quote a 5kW split or a commercial fridge service from the site. Customer accepts, the install drops onto the calendar.

GST invoice with refrigerant handling licence number, branded PDF, Stripe Pay Now link.

Simple Workflow
From quote to payment in four simple steps — designed around a typical HVAC tech's day.
Create an itemised quote for the split install, ducted retrofit, or commercial fridge service — units, refrigerant, copper, ductwork, and labour with GST calculated automatically. Send as a professional PDF with your ABN and ARC licence number.
Once accepted, the job drops into your week view. Track time on-site, log refrigerant charged or recovered, snap photos of the indoor and outdoor units, and capture commissioning data.
Convert the quote to a GST-compliant invoice with one tap. Your ARC licence number prints on every doc. Send it to the customer before you leave the property or the plant room.
Customers pay online via the invoice link. Automated reminders chase overdue payments so you can focus on the next install, not debt collection.
3x
Faster invoicing than paper or spreadsheets
$0
Free plan — no monthly fees to get started
14 days
Average reduction in payment wait times
100%
GST & BAS compliant for Australian HVAC techs
Built in Melbourne, AU
ATO-ready from day one
256-bit encryption
No credit card needed
Common questions about HVAC software in Australia — refrigerant logs, ARC licence, service contracts and more.
Yes — our free plan includes unlimited invoices, quotes, and up to 5 clients. Perfect for sole-trader split-install specialists or refrigeration techs just getting started. Upgrade anytime as your HVAC business grows.
Yes. Store your ARC (Australian Refrigeration Council) licence number once and it prints on every quote and invoice automatically. Log refrigerant type (R32, R410A, R134a, etc.), quantity charged or recovered, and cylinder serials per job — audit-ready when the regulator or your insurer asks.
Absolutely. Set up quarterly, six-monthly, or annual service schedules per cool room, freezer, or ducted system. OneBookPlus auto-creates the next service job, sends the customer a reminder, and keeps the full service history against each individual asset.
Yes. Build itemised quotes for split installs (single-head, multi-head), ducted system retrofits, VRF systems, and commercial refrigeration fit-outs. Include indoor and outdoor units, refrigerant, copper, controllers, and labour as separate line items. Customers accept online with one click.
Yes. For sites with multiple units — pubs with three cool rooms and ducted heating, or office blocks with twenty splits — each unit is tracked individually with its model, serial, refrigerant charge, install date, and full service history. Techs arrive already knowing the asset.
About the author
Founder & CEO, OneBookPlus
Bishal has over a decade of experience in digital marketing, web development, and small business consulting across Australia. He has worked directly with Australian HVAC and refrigeration businesses — split-install specialists, ducted system installers, commercial refrigeration techs — helping them streamline quoting, refrigerant logging, and service contract management.
Running an HVAC or refrigeration business in Australia means juggling more admin than most techs signed up for. You're quoting ducted retrofits between rooftop callouts, logging refrigerant charges against your ARC licence, managing service contracts for a dozen commercial fridges, and then coming home to reconcile ServiceM8 jobs against Xero invoices. Many HVAC techs pay $49/month for ServiceM8, $35/month for Xero, and another $12–27/month for a booking page and CRM — yet none of those tools were designed to handle refrigerant logs, ARC licence printing, or per-unit asset history. You end up keeping a paper logbook for the regulator and a spreadsheet for service contracts.
OneBookPlus replaces that patchwork with one platform built for how Australian HVAC and refrigeration techs actually work. Create detailed quotes for split installs, ducted retrofits, and commercial refrigeration jobs right from your phone. Log refrigerant type, quantity charged or recovered, and cylinder serial against every job — your ARC licence number prints on every quote and invoice automatically. Set up recurring service contracts per cool room or ducted system so the next visit auto-creates and reminds the customer. Track expenses against each job so you know your true margin, not just your revenue. And when BAS time rolls around, your GST summary is already waiting.
It's 6:30am and your phone buzzes — a panic callout through your OneBookPlus booking page. A walk-in cool room at a Brisbane cafe has dropped temperature overnight. You flag it as urgent and head out. On arrival, you diagnose a blocked condenser and a low charge. You build a quote on your phone: $290 emergency callout, $185 for cleaning and recharge, refrigerant logged as 600g R134a recovered and 750g recharged from cylinder #BR-3192. The cafe owner accepts on the spot. Job done by 8:30am. You snap a photo of the nameplate and the cleaned condenser, and convert the quote to an invoice before you're back in the van. Your week view shows a residential split install at 10am and a service contract visit to a supermarket cool room after lunch. Your apprentice has two service jobs assigned and can see his schedule on his own device.
Connect your business bank account via CDR Open Banking and OneBookPlus pulls in transactions daily. When the cafe owner pays the emergency callout invoice, the payment is automatically matched against the outstanding amount — no manual reconciliation needed. Purchases from Reece HVAC-R, Beijer, or Heatcraft are categorised as materials expenses; refrigerant cylinder buys and recovery cylinder swaps land against the right job. Our AI categorisation engine learns your patterns: van fuel goes to vehicle expenses, ARC licence renewal to compliance, recovery equipment to assets. Come BAS time, your GST collected on sales and GST paid on purchases are already tallied. Export the summary in one click and forward it to your accountant — or lodge it yourself in minutes.
Sign up free — no credit card, no lock-in contract. Select “HVAC / Refrigeration” as your business type and OneBookPlus pre-configures your account with HVAC service categories, typical install durations, and invoice templates that include your ARC licence number. Import your customer list and asset register via CSV from ServiceM8, Tradify, or a spreadsheet. Connect your bank account through the secure Open Banking flow. Most HVAC techs have their first quote sent within 30 minutes of signing up, and their bank feed categorising transactions by the end of the first week. The switch from ServiceM8 and Xero typically takes a single evening.
Join Australian HVAC and refrigeration techs who invoice smarter with OneBookPlus. Free to start — upgrade when you're ready.
Get Started FreeLast reviewed and updated: March 2026 by Bishal Shrestha
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Who it's for
Whether you're a sole-trader split specialist or running a multi-tech crew, OneBookPlus adapts to how HVAC and refrigeration techs work.
Running domestic split installs solo, quoting from the van, invoicing between jobs. Needs fast mobile invoicing, automatic GST, and ARC licence on every doc.
Managing whole-of-home ducted retrofits and new-build fit-offs. Needs detailed quoting for indoor and outdoor units, ductwork, controllers, and commissioning records.
Servicing pubs, supermarkets, and cold stores. Needs recurring service contracts, refrigerant logs per cylinder, and asset history per cool room or freezer.
Managing 3-10 techs and apprentices, scheduling installs and breakdowns across the city. Needs crew scheduling, job assignment, and ARC licence management for each tech.
Stop overpaying
Most small businesses stitch together 4-6 tools that don't talk to each other. Here's what that typically costs.
Real-world scenario
How a Brisbane HVAC tech uses OneBookPlus on a typical Wednesday
Mark starts his day checking the week view — a 5kW split install in Indooroopilly, a commercial fridge service callout at a Toowong pub, and a ducted system quote in Bardon. His apprentice Jake has two service contract visits assigned to a small supermarket chain.
At the Indooroopilly job, Mark unpacks the indoor and outdoor units, runs the copper, brazes the joins, and pressure-tests. He logs the refrigerant charge — 1.2kg of R32 from cylinder #BR-2841 — directly against the job in OneBookPlus. His ARC licence number prints on the invoice automatically.
Lunchtime: a panic call from the Toowong pub — a glass-door fridge has dropped temperature. Mark heads over, diagnoses a faulty TX valve, replaces it, recovers the old charge, and recharges with 350g of R134a. He logs the recovered and added quantities, snaps a photo of the unit's nameplate, and invoices on the spot. The pub manager pays via the invoice link before he's back in the van.
Afternoon at the Bardon house: Mark walks the home, builds a quote for a 14kW ducted system — outdoor unit, indoor fan coil, six-zone ductwork, controller, and three days of install labour. He attaches a heat-load summary as a PDF. The homeowner accepts the quote that evening.
End of day: 3 jobs completed, 1 quote sent, $4,800 invoiced, and the Toowong payment already received. Materials from Beijer logged with receipt photos. Mark's dashboard shows his quote win rate at 68% and his service contract base now covers 42 commercial assets. Come BAS time, his GST summary exports in one click — refrigerant logs and all.
How we compare
See how we compare to the tools HVAC and refrigeration techs typically use.
| Feature | OneBookPlus | Xero | ServiceM8 | Tradify |
|---|---|---|---|---|
| GST invoicing | ||||
| HVAC quotes with accept link |
| ARC licence on every doc |
| Refrigerant handling logs |
| Recurring service contracts |
| Crew scheduling & week view |
| Per-unit asset history |
| Parts & materials tracking with photos |
| BAS-ready tax reports |
| Free plan available |
| Price | From $0/mo | $35+/mo | $49+/mo | $49+/mo |