Management software for heating, heat pump and air conditioning installers
Quotes, maintenance contracts, scheduling, a work order app for iOS and Android, certificates and Peppol invoicing in one tool. The first pilot companies use it free for three months and decide with us what we build next.
Every step already knows the one before it.
Today most of this lives in six different places: a spreadsheet, a paper agenda, a phone call, a scanned form, an accounting package. In Instalvo it is one chain, and nothing is typed twice.
- STEP 1Customer
Sites, installations, serial numbers and the full history of every device.
- STEP 2Contract
Frequency, price, notice period and indexation on a live maintenance contract.
- STEP 3Planning
Drag the visit onto a technician. The customer gets a confirmation and a reminder.
- STEP 4Work order
Checklist, readings, materials, hours, photos and the customer's signature.
- STEP 5Certificate
Pre-filled from the readings, signed with the technician's licence number.
- STEP 6Invoice
One click from the work order, or generated automatically from the contract.
The visits you are owed, found for you.
Every maintenance contract knows which installations it covers and when each one is due. Instalvo keeps that calendar so nobody has to remember it, and so a contract never quietly expires while the customer keeps paying.
- Contracts as real objects: frequency, price, duration, notice period, indexation
- An expiry calendar that turns due dates into work to be planned
- Status per invitation: sent, answered, scheduled, done
The whole job, on the phone already in their pocket.
The technician opens the app and sees today's route. Checklists per intervention type, readings that flow straight into the certificate, materials and hours, photos, and a signature on the screen. The app works offline, so a dead spot in a cellar costs nothing.
- Address with a navigation link, access notes and the installation's full history
- En route, in progress, finished — the office sees it as it happens
- The work order leaves as a PDF to the customer before the van does
Paperwork that finishes itself.
The readings taken during the visit fill the maintenance and combustion certificates. The technician signs with their licence number, the customer gets it by email, and a copy stays in the customer's file. From the same work order, the invoice is one action away.
- 21%, 6% renovation and reverse charge, with the correct legal wording
- Structured payment reference, sequential numbering, credit notes
- Invoices sent over Peppol, plus a CSV and UBL export your accountant can just open
Namur · 12 March 2026
Enough to cancel the old package.
The first version is deliberately narrow: maintenance and interventions, done properly. No half-finished modules. Here is the whole of it, in plain terms.
Access and roles
- Owner, admin, technician and accountant, each seeing only what they should
- Company settings: logo, VAT and registration number, bank details, document colours
- Interface in English, French and Dutch
- A language per customer, so their documents and emails arrive in it
Customers and installed base
- Customer, site and installation, in that order, with several contacts per customer
- Gas and oil boilers, heat pumps, air conditioning and water heaters
- Brand, model, serial number, output, install date and end of warranty
- Search across name, address, phone number and serial number
Maintenance contracts
- Contract as its own object, tied to specific installations
- Frequency, price, duration, notice period and indexation
- Due dates surfaced as work waiting to be planned
- Follow-up status per invitation, from sent to executed
Planning
- A week view with every technician side by side
- Drag a job onto a person and a time slot
- Maintenance, inspection, repair and installation, each with its own duration
- Confirmation email on booking, reminder the day before
Work orders
- Checklists per intervention type, set up by the office
- Readings for flue gas, CO, draft, pressure and temperature
- Materials from a price list, hours, photos and free notes
- Signature on the screen, PDF to the customer by email
Certificates
- Walloon gas, oil and combustion certificates to start
- Filled from the installation record and the day's readings
- Signed with the technician's accreditation number
- Stored in the customer's file and exportable as a register
Quotes and invoicing
- Quotes that become planned jobs, then invoices; contracts invoiced automatically
- 21%, 6% and reverse charge with the right legal mentions
- Sent over Peppol to businesses, PDF by email for private customers
- Outstanding invoices with ageing, credit notes, CSV and UBL export
Document vault
- Everything Instalvo produces is filed under the customer and site automatically
- Upload the documents you already have
- Find anything by type and date
- The whole history of an installation in one place
Inventory tracking
- Parts and materials with stock levels in the warehouse and in each van
- Deducted automatically when used on a work order
- Low-stock warnings before a job runs short
- Movements logged, so you always know where something went
Follow Instalvo, or build it with us.
Leave your email to hear when Instalvo is available. Want to go further? The first pilot companies use it free for three months, talk to the founder directly, and decide with us what gets built next.