How to Read Meters Correctly: A Complete Guide for Landlords

Imagine the situation: It's the end of the year, you need to make a utility bill, and suddenly you find that you have chaos in the meter readings. One tenant claims that you recorded his status incorrectly, the other has moved out and you do not have a reading for the date of his departure. And the third water meter shows somehow too much - or too little? All of this can be avoided very simply by correctly recording the meters from the beginning.

Meter readings are the cornerstone of fair service billing. Without accurate data, you cannot properly allocate costs between tenants, and you risk claims and disputes. In this guide, I'll show you how to do it professionally.

Why correct meter reading is so important

Correct meter reading is not just an administrative formality - it is the basis for:

Equitable distribution of costs Each tenant pays only for what he actually used. No guesswork, no conflicts.

Discovering problems in time Unusual consumption can signal a water leak, illegal consumption or a defect in the meter.

Legal protection of the landlord In the event of a dispute, you have accurate documentation of consumption with dates and signatures.

Exact billing You can document how you are with specific amounts they have run out.

When to read meters

Regular readings

Annual reading (mandatory) At least once a year at the end of the accounting period. It is usually December 31 or the date specified in the contract.

Half-yearly inspection (recommended) Helps to detect leaks or non-standard consumption during the year. It will save you surprises at the end.

Monthly readings (for active management) Ideal for maximum control and continuous invoicing. It pays off especially for larger buildings or problem tenants.

Extraordinary readings

When changing tenants ALWAYS! Without exception. The deduction as of the date of handover is the basis for billing.

When changing the supplier's tariff If there is a change in the price of energy, you need to know the status on the date of the change.

When claiming consumption When the tenant contradicts the bill, you have something to argue.

After repair or replacement of the meter Necessary for continuity records.

How to physically carry out a reading

Preparation before reading

1. Check meter accessibility - Notify tenants in advance if you need access to apartment
2. Have a list of all meters - Serial numbers, location, type
3. Prepare the form - Paper or electronic
4. Charged phone - For photo documentation

The reading itself step by step

Step 1: Meter identification Check the serial number of the meter. It must match your list. Meters are sometimes moved or interchanged.

Step 2: Subtract the value Write ALL the digits before the decimal point. Usually do not subtract the decimal places (they are marked in red).

Step 3: Photo documentation Take a picture of the meter display so that it is visible:

• Counter status
• Production number
• Date on the photo (set on the mobile phone)

Step 4: Plausibility check Compare with the previous reading. Consumption should correspond to the period and type of apartment.

Step 5: Tenant's signature Ideally have the tenant sign the reading report right on the spot.

Types of meters and their specifics

Residential water meters

The most common type of meter in rental apartments. We distinguish:

Cold water (SV) Marked with a blue label or label.

Hot water (DHW) Red label. Higher temperatures place greater demands on the meter.

What to watch:

• Verification period: check the instrument type and current UNMZ rule; water meters used to charge end users commonly have a five-year period, but the applicable category controls
• Tightness - moisture around the meter signals a problem
• Readability of the display

Heat meters

Measures heat consumption for heating. There are two types:

Calorimetric meters Direct measurement at the entrance to the apartment. More accurate but more expensive.

Indicators on radiators Ratio meters. They do not calculate absolute consumption, but the share of consumption in the house.

Specifications:

• Read at the end of the heating season or calendar year
• The indicators are reset at the beginning of the period

Electricity meters (if secondary)

Single-phase Most households. One data in kWh.

Three-phase For larger apartments or with electric heating.

Dual tariff Low and high tariff. Record both states separately.

Common reading errors and how to avoid them

Error 1: Mixing meters

Problem: In a multi-apartment building, it happens that you read a neighbor's meter.

Solution: Always check the serial number and take photo documentation.

Error 2: Wrong reading the value

Problem: You flip the digits or forget the zero when reading.

Solution: Photo + double check + compare with history.

Error 3: Missing reading when changing tenant

Problem: Tenant moves out and you don't know what his consumption.

Solution: The handover report should record all relevant meter readings; verify the device and reading for each unit.

Error 4: Not recording the reading date

Problem: You know the statuses, but not on which day.

Solution: Date each reading immediately. Ideally also over time.

Mistake 5: Loss of paper records

Problem: After a year you are looking for where you wrote it down then.

Solution: Digitization. Use property management software.

Records of readings - paper vs. digital

Paper records

Advantages:

• Simple, without the need for technicians
• Signatures directly on the document

Disadvantages:

• Loss, damage
• Difficult search
• Manual calculations

Excel table

Advantages:

• Basic automation of calculations
• Easy sharing

Disadvantages:

• Risk of overwriting data
• No history of changes
• Not connected to other agenda

Specialized software

Advantages:

• Automatic consumption calculations
• Connection with billing
• History of all readings
• Notification of anomalies
• Mobile application for readings

Disadvantages:

• Initial investment of time in setup

How to automate readings

Remote readings (smart metering)

A modern solution that saves time and eliminates errors. Meters with a radio or WiFi module send data automatically.

Advantages:

• No manual readings
• Data in real time
• Automatic detection of leaks
• Accurate billing

Costs:

• Investment 1,000 - 3,000 Kč per meter
• Mostly pays for 5+ apartments of units

On-the-go readers

A technician with a reader goes through the house and reads the meters using a radio signal without having to enter the apartments.

Advantages:

• Faster than manual reading
• No need to access the apartments

Photographic reading with OCR

You take a picture of the meter and the software automatically recognizes the value. You still need to physically go to the meters, but the records are automatic.

Checking the correctness of the measurement

How to recognize a faulty meter

• Not running at all – status does not change even with consumption
• Runs backwards – decreasing values (yes, it happens)
• Running without consumption – spins, even if nothing flows
• Unreal consumption - dramatically higher/lower than usual

What to do if you suspect a fault

1. Take a control measurement (subtract 10 liters and observe the change in state)
2. Compare with last year's period
3. Consult your water/heat supplier
4. Alternatively, have the meter officially verified

Legal aspects of the readings

What the law says

Act No. 67/2013 Coll. stipulates that the lessor must:

• Ensure consumption measurement
• Perform billing based on actual consumption
• Keep documents for 5 years

Access to the apartment for reading

The tenant generally must allow properly notified access needed for meter reading, subject to the Czech Civil Code and the circumstances. However, you must:

• Inform in advance (min. 3 days, ideally a week)
• Agree on a reasonable date
• You may not enter without consent

Disputes about measured values

If the tenant disagrees:

1. Offer a control measurement
2. Submit photo documentation
3. Compare with historical dates
4. Alternatively, have the meter verified in an authorized testing facility

Practical example: Annual cycle of readings

January – Annual reading as of 31.12. the previous year. Bill processing.

April – End of the heating season. Reading of heat meters.

July – Semi-annual control reading. Detection of problems.

September – Check before the heating season.

December – Preparation for the annual reading. Notice of tenants.

Continuous - Readings when tenants change.

Summary: 10 golden rules of readings

1. Deduct regularly – at least once a year, ideally more often
2. ALWAYS subtract when changing tenant
3. Check meter serial numbers
4. Take photo documentation
5. Write down the date and time of the reading
6. Have the reading confirmed by the tenant
7. Compare with historical data
8. Digitalize records
9. Watch stamp dates
10. Act immediately in case of anomalies

Correct meter records are an investment in your peace of mind. They will save you from disputes with tenants, facilitate billing and help to detect problems in time.

How Grento can help you

Grento records all meters and their readings. Supports mass import of readings and automatic calculation of consumption.

> Czech-law scope and editorial note: Legal, tax, accounting, tenancy, service-charge, condominium, metrology, insurance and data-protection statements in this article refer to the Czech Republic and the rules effective for the relevant date. Figures and examples are illustrative, not legal or tax advice. Verify current rules with the relevant Czech authority or a qualified adviser.

> Metrology and heat clarification: Verification periods depend on the instrument type and current UNMZ rule. Heat allocation uses the current Czech decree and may use a 40%, 50% or 60% basic component according to building energy performance, with possible adjustments; hot-water allocation is separate. Do not treat a 30/70 or ±20% statement as universal.