The All-In-One ERP software for Heatpump

From heat loss calculation to signed quote, on the same visit.
Heat pump installations are won or lost in the living room. Your consultant needs to calculate the right system size, model the savings, and send a proposal before the customer has a chance to call someone else. OpusFlow gives your sales and operations team everything they need to close on-site, plan efficiently, and invoice without the admin pile-up.
Heat Pump
Join over 3.000 installers using OpusFlow

Why opusflow

Benefits for your company

Here’s what changes when your whole heat pump operation runs in one place. No more switching between a sizing tool, a spreadsheet, and a quoting template to get one job out the door. Sales, planning, procurement, and invoicing all work from the same data, in the same system, updated in real time.
Sized and quoted before you leave
Calculate heating loads, model 25-year savings, and send a branded proposal on-site.
Materials reserved, nothing forgotten
Stock is reserved the moment a contract is signed. No install-day surprises.
Subsidies tracked, step by step
Structured workflows track every subsidy application from submission to final payment.
Teams that stay in sync
Drag-and-drop scheduling with conflict detection and real-time push to your field crew.

WHERE HEAT PUMP INSTALLERS LOSE MARGIN

Three places every job gets harder than it needs to be

It’s rarely one big failure. It’s the quote that took three days instead of one, the unit that wasn’t in stock on install day, the subsidy application that nobody updated. These are the three places OpusFlow closes the gap for heat pump installers.

Sounds familiar?

Your sales process costs you deals

Your consultant visits the site, goes back to the office to size the system in one tool, calculate savings in a spreadsheet, and build the proposal in a third. By the time it lands in the customer’s inbox, they have two other quotes and the moment has passed.

Nobody checked stock before the job was confirmed. The heat pump unit is reserved on paper but already allocated elsewhere. Your installer arrives and the job has to be rescheduled. The customer isn’t happy. Neither is your margin.

Subsidy applications sit in a shared inbox with no owner. Invoices go out late, missing line items, or referencing the wrong system specs. Hour registrations aren’t submitted until the end of the month. By then, the numbers don’t add up and nobody knows why.

Sized on-site. Proposal sent. Deal closed.

OpusFlow’s energy simulation calculates heating loads and models 25-year savings using real consumption data. Your consultant sizes the right system, runs the ROI, and sends a branded proposal before leaving the appointment. Every quote links directly to the project, the CRM contact, and the material list.

Right materials. Right place. Install day.

OpusFlow reserves hardware the moment a contract is signed. Real-time stock levels across warehouses and vehicles mean you always know what’s available. Automatic reorder alerts make sure you’re never caught short on the next job either.

Clean records in. Accurate invoices out.

OpusFlow automates the parts that shouldn’t need human effort. Invoices inherit line items directly from finalised material lists. Subsidy workflows move through structured approval stages with a clear owner at every step. Hour registrations feed straight into project cost reports, so you always know where your margin is going.

Three places every job gets harder than it needs to be

It’s rarely one big failure. It’s the quote that took three days instead of one, the unit that wasn’t in stock on install day, the subsidy application that nobody updated. These are the three places OpusFlow closes the gap for heat pump installers.

Your consultant visits the site, goes back to the office to size the system in one tool, calculate savings in a spreadsheet, and build the proposal in a third. By the time it lands in the customer’s inbox, they have two other quotes and the moment has passed.

Sized on-site. Proposal sent. Deal closed.

OpusFlow’s energy simulation calculates heating loads and models 25-year savings using real consumption data. Your consultant sizes the right system, runs the ROI, and sends a branded proposal before leaving the appointment. Every quote links directly to the project, the CRM contact, and the material list.

Nobody checked stock before the job was confirmed. The heat pump unit is reserved on paper but already allocated elsewhere. Your installer arrives and the job has to be rescheduled. The customer isn’t happy. Neither is your margin.

Right materials. Right place. Install day.

OpusFlow reserves hardware the moment a contract is signed. Real-time stock levels across warehouses and vehicles mean you always know what’s available. Automatic reorder alerts make sure you’re never caught short on the next job either.

Subsidy applications sit in a shared inbox with no owner. Invoices go out late, missing line items, or referencing the wrong system specs. Hour registrations aren’t submitted until the end of the month. By then, the numbers don’t add up and nobody knows why.

Clean records in. Accurate invoices out.

OpusFlow automates the parts that shouldn’t need human effort. Invoices inherit line items directly from finalised material lists. Subsidy workflows move through structured approval stages with a clear owner at every step. Hour registrations feed straight into project cost reports, so you always know where your margin is going.

Join over 3.000 installers using OpusFlow

Close the deal before you leave the house

Heat pump deals are time-sensitive. The consultant who leaves with a signed proposal wins. OpusFlow gives your sales team a simulation engine that calculates heating loads using the DIN 12831 methodology, models 25-year savings against real energy consumption data, and generates a branded proposal before the appointment is over. Every quote links directly to the project record, the CRM contact, and the material list, so nothing gets lost between the visit and the install.

Quote

Works with the tools your business already runs on

OpusFlow connects natively with Google Workspace, Microsoft 365, Exact, Mollie, and more, so your team hits the ground running, not starting over.

From schedule to sign-off, without the chaos

Getting a heat pump job planned, staffed, and executed without friction is harder than it sounds when you’re running multiple installs at once. OpusFlow gives planners a drag-and-drop scheduling calendar with conflict detection and real-time push notifications to field crews the moment anything changes. On-site, technicians work from digital forms with conditional logic, photo capture, and on-screen signatures that sync to the project record instantly. Hours are logged per task from the mobile app, and that data feeds directly into project cost reporting, so you always know where your margin is going.

Planning OpusFlow

What real installation businesses say

These are companies that replaced spreadsheets, disconnected tools, and manual admin with one system. The results below are from their own experience, not estimates, not averages.

VERDASOL
“OpusFlow has really helped us during a difficult time by offering an affordable solution when we needed it most.”
Verdasol

Mike Buderath - Manager

Your AI co-worker for heat pump operations

OpusAI agent is built directly into OpusFlow. Tell it what you need in plain language, show me all open heat pump jobs planned for next week, create a service ticket for customer van der Berg, build a report on install costs by technician, and it handles the rest. No navigation, no clicking through menus. This native data assistant has full context of every project, schedule, quote, and invoice in your account, so its outputs are specific to your business, not generic suggestions.

AI OpusAgent

One platform. Every part of the business covered.

OpusFlow is not a quoting tool with a few extras bolted on. It is a full business platform built specifically for sustainable installation companies — with 25+ modules covering everything from your first customer contact to your final invoice. Here is what is included.

FAQ

Everything you want to know before booking a demo.

How does the automated billing work?

OpusFlow runs a billing engine every night that checks all active contracts and automatically generates invoices for any that are due. There is no manual step required and no risk of a billing run being forgotten because someone was on holiday. The system also includes built-in safeguards that prevent a customer from ever being billed twice for the same period.

Is a ticket linked to the original installation project?

Yes. Every ticket is linked directly to the parent project in OpusFlow, which means the moment a service request comes in, the person handling it has immediate access to the original Bill of Materials, installation photos, engineering models, and the full project history. There is no need to search through archives or ask a colleague — the context is already there.

Can customers see photos from their installation in the Customer Portal?

Yes. Field-captured photos linked to the project are displayed in a gallery within the portal, including installation progress images and final commissioning shots. It’s a straightforward way to keep customers informed and build confidence in the quality of the work being done.

Can customers track where their installation is in the process?

Yes. The customer portal displays a visual milestone tracker showing exactly where the project stands, from initial survey through to commissioning. The indicators update in real time as your team progresses the project in OpusFlow, so customers always have an accurate picture without needing to chase your team for an update.

What can a customer actually see in the portal?

Customers have access to real-time project milestone tracking, all commercial documents linked to their project, scheduled appointment and survey dates, photo galleries from the installation, and a communication thread with your team. Everything relevant to their project is in one place, presented clearly without exposing any of your internal data or other customers’ records.

We run more than one company under the same group. Can OpusFlow handle that?

Yes. OpusFlow’s Multi-Entity Finance feature lets you manage multiple companies, labels, or subsidiaries from a single account. Each entity gets its own branding, invoice number sequences, payment terms, and accounting integration. Projects and quotes are automatically linked to the correct entity, so there’s no risk of invoices going out under the wrong logo or routing to the wrong general ledger.

Can automations work across different departments and modules?

Yes. A single automation can span multiple modules — for example, when an installation is marked complete in project management, it can trigger an invoice in finance, create a follow-up task for the sales team, and send a completion notification to the customer portal simultaneously. Workflows aren’t limited to one department, and you can build approval chains that route between teams as part of the same sequence.

Which tools does OpusFlow integrate with natively?

OpusFlow currently integrates with Google Workspace, Microsoft 365, Mollie for payment processing, the Dutch 2BA product catalog, Exact and Peppol for accounting and e-invoicing, and AEAT for the Spanish market. For tools not on this list, the open API allows you to build custom integrations and connect OpusFlow to virtually any platform in your existing stack.

Do I need technical knowledge to build automations?

No. Automations in OpusFlow are configured through a visual rule builder — you select a trigger, add conditions, and define one or more actions. No code involved. For more complex workflows, pre-configured automation templates give you a proven starting point you can adapt rather than build from scratch. Most teams have their first automations running within an hour of setup.

Does the consultant need technical training to run the heat loss calculation?

The calculator is designed to be used by sales consultants on-site, not heat pump engineers. The 3D scan does the heavy lifting for room geometry, the input flow guides the consultant through the remaining variables, and the output is generated automatically from there. The plain-language recommendation is specifically written to be read straight to the customer without requiring the consultant to interpret technical data. Most teams are comfortable running a full assessment independently after a single walkthrough of the tool.

Can the heat pump calculation be combined with a solar or battery quote in the same proposal?

Yes. The heat pump calculator sits inside the same quotation flow as the PV Designer and battery calculator, so your consultant can cover solar design, battery sizing, and heat pump assessment in a single appointment and present a combined proposal with a full renewable energy picture — including a joint ROI calculation — in one branded PDF. No switching between tools, no separate follow-up visits.

Is the heat loss calculation certified to a recognised standard?

Yes. The calculation follows the DIN EN 12831-1:2017 methodology, which is the recognised European standard for determining building heating load. It covers per-room heat loss including U-values, thermal bridges, ventilation, airtightness, and surface adjacency. The output is a DIN-compliant PDF report that includes a per-room breakdown, total heat demand, and the final hardware recommendation — suitable for use as supporting documentation with the customer or for your own internal records.

Which 3D scanning tools does OpusFlow work with?

OpusFlow accepts scans from iPhone Pro (via LiDAR), Matterport, Polycam, and other scanners that export in OBJ, STL, GLTF, or GLB formats. The scan is processed directly in the browser — no file upload to a server is required, which keeps the process fast and keeps your customer data on-device during the calculation.

Can I make a calculation based on my installation plan?

Yes! With the PV Designer you can design both private and commercial roofs and generate a full calculation and Bill of Materials directly from your installation plan.

What type of companies can use OpusFlow?

OpusFlow is built for sustainable installers: think solar, heat pumps, air conditioning, climate control, and wind farms. General installation companies are equally at home on the platform. Thanks to its modular setup, you simply switch off what you don’t need and focus on what matters to your business.

Still have questions?

Our team knows the product inside out. Ask us anything — no sales pressure, no scripts.

Schedule your free demo

Get a live customized demo or discovery call focused on what your organization needs, get answers to your specific questions, and find out why OpusFlow is the right choice for your organization

What can I expect?

“OpusFlow has truly transformed our daily operations, making us more efficient and effective in managing our business. The seamless integration of processes and the ability to customize templates have been game-changers for us. Working with OpusFlow feels natural, and the software's responsiveness to our feedback has been invaluable.”
David van Gaalen - Co-founder
RECHARGED

Sign Up

Select all services your company offers