18 modules · one login
All modules in one place.
Koldwerk consists of 18modules, all integrated. One login, one database, one audit trail. Start with what you need today — scale up when you're ready.
BRL 100, K25000 and STEK are Dutch national certification schemes — full support today is NL-only. See our honest country-coverage disclosure.
Module titles and summaries below are translated. Full module detail pages are currently Dutch-only (NL) — marked below each card.
Digital work orders
Your installer fills in the work order on their phone, the customer signs on-site, and you have the PDF in your inbox within 30 seconds. Audit-proof, linked to customer + installation.
Offertes met online klant-akkoord
Stel de offerte samen met dezelfde materiaalregels als je werkbon, verstuur 'm met één klik, en de klant tekent akkoord op een simpele pagina — geen account nodig. Zodra de klant akkoord geeft, staat de conceptwerkbon met alle regels al klaar.
Refrigerant registration & balance
Koldwerk calculates the live balance per refrigerant type. Cylinders, mutations, stock, installations — all automatic. An alert appears on the dashboard for any discrepancy ≥ 0.001 kg.
Installation management
One place for all your installations: per customer, per type, with serial number, refrigerant, install date, maintenance history and BRL-100 audit PDF.
Customer register (CRM)
GDPR-compliant CRM with AES-256 encryption on customer contact data. Per customer: company details, Chamber-of-Commerce number, contacts, installations, work orders, contracts — one screen.
Work planning
Weekly calendar per installer, one click to schedule appointments. Generate a work-order draft from a planning item in a single click.
Maintenance contracts
Attach a contract to an installation or group of installations. Koldwerk automatically generates a work order X days before the due date, emails the customer, and keeps the history.
Customer portal
Give your customer their own login. They see their installations, all signed-off work orders, and download PDFs themselves — and stop calling you for copies.
Logbooks & BRL-100 audit PDF
One button per installation generates a complete BRL-100-compliant audit PDF: customer details, installation specs, all signed work orders, refrigerant history.
Reports & exports
One exports page, four downloads: BRL-100 ZIP package, refrigerant CSV, installation CSV, work-order CSV. With SHA-256 manifest for integrity checking.
Incident registration
Log incidents with category, severity, related customer/installation/work order. A dashboard banner appears for CRITICAL/HIGH incidents until resolved.
CO-keuringen — Gasketelwet / BRL 6000-25
Start een CO-keuring vanaf de installatie of de werkbon, doorloop de vaste checklist, en leg CO-waarden + resultaat vast. Koldwerk blokkeert de keuring als de gekozen monteur geen geldig CO-persoon-certificaat heeft.
Tool management & calibration
Per tool: calibration history, certificate PDF upload, automatic status (valid/expiring-in-30/expired). Expired tools cannot be issued.
Issue & return
Issue cylinders and tools to an installer. Per item: status open / returned / missing / defective. Cylinder status is tracked automatically (full/partial/empty).
Compliance forms — custom checklists
Build your own checklist templates in Koldwerk. Version control built in: the published version stays frozen, edits automatically create a new version.
Debitan accounting sync
One click on a signed-off work order → invoice lines are created in Debitan, with the correct VAT rate and ledger account.
Users & roles (RBAC)
Four built-in roles: OWNER, ADMIN, INSTALLER, CUSTOMER. Each role gets different routes and data access. Strict multi-tenant isolation — nobody ever sees another workspace's data.
LMRA — Last Minute Risk Analysis
Mobile-first LMRA on your installer's phone — required before the work order can start. On a CRITICAL "no" the app blocks the work and sends an approval request to the supervisor. GPS, photo evidence, audit trail — all in 90 seconds, all retrievable for 7 years.
Not sure which module you need first?
Talk to us and we'll help you get started, or create an NL account directly — all modules are available immediately.