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NUL-G

Custom software for installation and maintenance.

For installers, maintenance and service companies and grid contractors, where the work revolves around job sheets, faults, inspections and SLAs.

No obligation · six questions · reply within one to two working days

Who we build for

  • Electrical, mechanical and HVAC
  • Fire safety, lifts and security
  • Service and maintenance with contracts and SLAs
  • Technical management, multi-year maintenance plans (MJOP) and NEN 2767

What is happening.

What is changing in installation and maintenance.

  1. 01

    More work than engineers

    There is more work than there are engineers. Every hour an engineer spends on job sheets and admin is an hour less with the customer.

  2. 02

    A log per installation

    The F-gas Regulation and NEN 3140 require a log, inspections and repairs per installation. When it is checked, it all has to be right first time.

  3. 03

    Energy-saving obligation per building

    Offices must have energy label C, and the energy-saving obligation tightens from 1 July 2027. Customers ask for advice and delivery per building.

  4. 04

    Terms per client

    Clients send work through their own portals and agree their own response times per contract. You want to be able to show those per contract.

Where it can be better.

Six processes from day-to-day operations at installers and maintenance companies.

How it works now
The engineer fills in the job sheet on paper or in an app: hours, materials, photos, signature. Then it is retyped for the invoice.
What could be better
Invoices without weeks of delay, with all materials and extra work on them.

Demo company › Job sheets

  • This week
  • Signed off
  • Needs checking
  • Invoiced
Signed off this week
38
Ready to invoice
29
Needs checking
4
No.Job and siteEngineerStatus1–8 of 38
WB-4812Replace boiler · house BredaInvoiced1 w
WB-4813Air con service · office ZuidasReady to invoiceyesterday
WB-4814Extend distribution board · schoolMaterial not on sheettoday
WB-4815Hot water leak · care homeSignature missingyesterday
WB-4816Balance ventilation · office BSigned off with photostoday
WB-4817Replace well pump · ATESHours differtoday
WB-4818Emergency lighting · car parkInvoiced3 d
WB-4819Install heat pump · house OssIn progress09:15
Proposal

The photos for WB-4814 show two RCBOs that are not on the sheet. Extra work at list price: €186.The work planner decides what goes on the invoice.

Add extra workAdjust

Example. Demo company; names and figures are fictitious.

All processes

The system proposes. You decide.

The system reads, checks and prepares. A person decides what happens.

Per process: what the system does and who decides
ProcessWhat the system doesWho decides
From job sheet to invoiceWhat the system does: The engineer’s hours, materials and photos go to the invoice without retyping. Extra work no longer slips through.Who decides: The work planner decides what goes on the invoice.
Breakdown serviceWhat the system does: Reports from phone, portal and building management system in one list, by priority. The engineer sees how the same fault was fixed before.Who decides: The planner decides who goes.
Maintenance contract and SLAWhat the system does: Response times, service visits and indexation monitored per contract. The monthly report is ready for the client.Who decides: The contract manager decides on the indexation.
InspectionsWhat the system does: Inspect and measure on a tablet. The report is ready straight away, and every remedial item becomes a job sheet.Who decides: The inspector decides the result, the customer orders the repair.
Engineer planningWhat the system does: Engineers scheduled by trade, certificate and region. When an urgent fault comes in, the schedule recalculates the rest of the day.Who decides: The planner approves every change.
Handover and as-builtsWhat the system does: As-built drawings, test reports and photos collected during the work. The handover file and the Wkb evidence are ready at handover.Who decides: The project manager checks and submits to the quality assurer.

Compliance you can prove.

What the rules in building services ask, and what the system records.

Rules for installation and maintenance: what the inspector asks and what the system records
RuleThe inspector asksThe system records
F-gas RegulationSince March 2024; topping up with high-GWP refrigerants increasingly banned, with further bans up to 2032.Refrigerant per installationCharges and leak tests
NEN 3140 and SCIOSPeriodic inspection of electrical installations, often required by the insurer.Periodic inspectionInspections and defects
Wkb (Dutch Quality Assurance for Construction Act)Since 1 January 2024 for consequence class 1; the installer supplies the evidence.The installer's burden of proofPhotos and measurements per handover
Energy label and energy-saving obligationLabel C for offices since 2023; the energy-saving obligation tightens from 1 July 2027.Measures and consumptionConsumption per building
For every sector
GDPRWho processes personal data, and whereData processing agreement, EU hosting with ISO 27001-certified partners
AI ActHuman oversight of AIEvery proposal with who approved it

Start here.

One process, one prototype. Then you decide.

Start with your work orders and faults, with the history per asset, or with inspections on a tablet.

  1. Step 01

    Conversation

    A process map

  2. Step 02

    Prototype

    A prototype

  3. Step 03

    Build

    A go or no-go per phase

  4. Step 04

    In operation

    Your code, your data

Systems you may already use

  • Syntess (Aceve)
  • 4PS
  • Bouw7
  • Outsmart
  • Ultimo
  • Planon
  • TOPdesk
  • Mareon
  • Vabi

We connect to what is there, or build alongside it where the package is too heavy or too rigid.

Where we are not the right fit

Grid operators and water companies run long public tenders of their own; that is not where we start. We build for installers and service companies with their own engineers, and for the grid contractors who work for them.

Questions.

About costs, time, integrations and ownership.

What does it cost?

Most systems we build cost between €10,000 and €40,000, one-off. Support is about 3 to 5% of that, per month. After the prototype you get a fixed price, before you sign anything.

How long does it take?

We set that after the prototype, per phase. We do not give a timeframe before then.

How much of our time does it take?

One owner who makes the decisions, and a few users who review and test during the build. We agree the exact amount per project.

Does it connect to our ERP and Microsoft?

Yes. Users sign in with their own Microsoft account and MFA. We set out in the proposal which ERP and file integrations are included.

Who owns the software?

You do. The rights transfer per phase, once that phase is paid. No licence.

Where is it hosted?

In the EU, encrypted: EU hosting with ISO 27001-certified partners.

Who maintains it?

We do, under an SLA. Or you do: the documentation is written for that.

People

  • Jelle Nodelijk, Partner · process and first conversation
  • Mike de Beste, Partner · build and technology
  • Jeroen Romeijnders, Partner · sectors and prototypes

You talk to the people who build it: Jelle, Mike and Jeroen. No account manager, no middleman.

About us

Show us one process that could be lighter.

Get a working prototype

No obligation · six questions · reply within one to two working days. Or get in touch