Services — OneViewer, meter exchanges, refurbishment

Our own platform

OneSystem

One platform — four tools

OneViewer is part of our OneSystem offering — a single web app that ties the whole flow together, from reading to billing. Built to work both online and offline, wherever mobile coverage is limited.

Collection & analysis

OneViewer

Brand-independent metering data acquisition from all types of sensors — wM-Bus, LoRaWAN and NB-IoT. Cost allocation, resident login and invoicing via Fortnox.

Walk-by reading

OneReader

Reading in the field — walk or drive past and capture meter readings straight into the app, even where there is no coverage at all. The data syncs automatically once the connection is back.

Booking system

OneBooking

A booking system for meter replacements — customers reschedule themselves with a unique booking number sent by letter, email or SMS. The entire process is documented to your specifications.

Administration

OneChange

Integrated into the system to administer and manage meters, replacements and customers — full traceability from order to completed replacement.

Built for the real world

Works even where coverage runs out

Everything is a single web app that works both online and offline — in forests, tunnels, substations and rock caverns. Work continues without interruption and synchronises once coverage is back.

Forests and rural areas Tunnels and rock caverns Substations and basements Automatic sync when coverage returns

OneViewer in detail

A comprehensive, open system for collecting meter data from all types of sensors — developed for housing cooperatives, joint property associations and smaller property companies, and used in everything from individual properties to entire portfolios.

Open system — handles all types of communication and most types of meters
Resident login with consumption and costs
Allocation-based invoicing with distribution via Fortnox — email, digital mailbox or letter
Reports and analyses for boards and property managers

Administrative metering services

We handle the entire flow

Tailored metering services for property companies, housing cooperatives and joint property associations — get in touch and we will find the solution that suits you. All metering services in detail.

Meter reading

Wireless wM-Bus outside the property with a mobile reading system, or permanently installed systems for wired M-Bus, wM-Bus or LoRaWAN. Optical on-site reading when needed — but we always aim for remote reading. We read several makes; our own meters are fully open and comply with the applicable EU standard.

Delivery of meter readings

Time-stamped, ID-tagged meter readings — from simple CSV/Excel to tailored exports, adapted to your system.

Plausibility review

Review of meter readings and consumption so that no incorrect values are used for cost allocation or billing.

Cost allocation & billing

We set up routines and templates and then handle the ongoing work — with individual specifications or export to an external property manager.

Web service

Meter readings, consumption, statistics and alarm handling via web login.

Meter replacements

OneBooking — a booking system for ongoing service assignments

With our in-house booking system, customers can easily change their booking using a unique booking number sent by letter, email or SMS.

Our staff handle the entire meter replacement process — administratively, practically and technically. We take care of everything from planning and booking with the customer to the replacement itself and the final reporting.

Every replacement is documented to your specifications
The booking number follows through into the final documentation
Customers reschedule themselves — around the clock

The Meter Workshop

Refurbishment that makes the meter at least as good as new

We refurbish mechanical meters for cold water and district heating — with both economic and environmental benefits. Our fully equipped workshop has ample capacity, and when needed we sandblast and repaint meter housings to as-new condition.

Testing to STAFS 2007:2 after refurbishment ensures accurate metering
New measuring inserts to MID or EG standard depending on type
New serial numbers and the addition of communication on request
Reusing meter housings and glass improves your sustainability performance

IMD

Individual metering and billing

Each apartment gets its own measured consumption of electricity, water and heat — and the cost is allocated by actual usage instead of a flat rate. Better control, lower consumption and fair allocation. A dedicated IMD page with all the common questions.

What is IMD?

Individual metering and billing means that separate meters are installed for each apartment or unit, the data is collected centrally, analysed and used as the basis for individual billing — each resident pays for exactly the amount of energy or water they have used. IMD promotes fairness and awareness, which leads to reduced usage and cost savings.

How does allocation-based invoicing work in OneViewer?

The meters continuously collect consumption data that OneViewer analyses. The costs for each resource are allocated fairly between the units based on actual usage — where a shared meter is used, an allocation algorithm is applied as agreed. Individual invoices are generated with detailed consumption information and distributed through the Fortnox integration — as email, digital mailbox or letter. Reports and analyses help residents understand and optimise their consumption.

Are there laws and regulations around IMD?

Yes. The EU Energy Efficiency Directive (2012/27/EU), implemented in Swedish law, requires IMD of heating, cooling and domestic hot water in multi-dwelling buildings where it is technically feasible and cost-effective. The Swedish Energy Markets Inspectorate oversees the rules, the Swedish building regulations (Boverket) set energy performance requirements, and the tenancy legislation governs how IMD is introduced in tenancy relationships.

What requirements apply to the equipment?

Metering equipment used for billing must be MID-approved (the Measuring Instruments Directive 2004/22/EC) — Swedac oversees and accredits the bodies that verify this. Technical standards such as EN 1434 (heat meters) and EN 14154 (water meters) govern design and testing. For remote reading, requirements on data handling and the protection of personal data also apply. We strongly advise against using non-MID-approved meters for billing — it jeopardises accuracy, legality and residents' trust.

Must all products come from the same supplier?

No. OneViewer is an open system that handles all types of communication and most types of meters. With international standards such as M-Bus and OMS, products from different suppliers can be integrated — giving flexibility, a competitive edge and the ability to choose the best technology from each manufacturer.

Rental

Rent a calibrated meter with a solid track record

Verify your measurements without investing. Many of the meters are calibrated both by us and by the Technical Research Institute of Sweden (SP). Contact us for a quote.

Endress+Hauser Promag 33A DN 2Inductive flow meter, maximum flow 110 l/h — long track record, calibrated by us many times

ABB MAG-XM DN 40Electromagnetic flow meter with DN 50 connection and 50XM2000 amplifier, 0–36,000 l/h — has served as a reference meter in one of our test rigs

Krohne IFS5000 DN 4Inductive flow meter with IFC110 amplifier, maximum flow 420 l/h — newly built, calibrated by us

We also offer comparison measurement and tailored measurement solutions for industry.

System integration

We connect the whole picture

Reading via wired M-Bus or radio calls for a higher degree of systems and integration thinking. We have several different systems depending on the requirements and conditions — and we offer engineering design, meters, software, operation and technical support.

We integrate meters, collection systems and your business systems into a functioning whole, regardless of make — including an EV platform for charging management with dynamic pricing, load balancing and access control.

System, metering data acquisition, customisation and refurbishment