# Residential Heat Meter B\_METERS HYDROCAL M4 DN15 Qp=0.6 m3/h (1/2")

**URL:** https://aio.lv/en/product--bmeters-h4-1122-4321-2010--12070812
**Data updated:** 2026-03-12 21:49 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** B\_METERS
**Manufacturer code:** H4-1122-4321-2010
**EAN:** 5903299932210
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 157.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 130.16 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bmeters-h4-1122-4321-2010--12070812

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.89 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

HYDROCAL M4 is a residential heat meter from B\_METERS designed for monitoring thermal energy consumption. The device features DN15 (1/2") connection size and a nominal flow Qp of 0.6 m3/h. It is intended for accurate measurement of heat usage in apartments and small properties, supporting billing, energy management and consumption control.

## Long description

HYDROCAL M4 is a residential heat meter by B\_METERS designed to measure thermal energy consumption in apartments and small properties. The meter has a DN15 (1/2") connection and a nominal flow rate Qp of 0.6 m3/h, enabling accurate monitoring of heat delivered by central heating or local boiler systems. HYDROCAL M4 provides measurement of heat energy and flow with a compact form factor suitable for installation in tight spaces.
Advantages
HYDROCAL M4 combines a compact DN15 connection with a calibrated nominal flow of 0.6 m3/h to deliver reliable residential heat measurement. The design focuses on ease of installation, stable metrological performance and suitability for regular billing or energy management. The meter’s construction supports integration into standard piping layouts for individual flats or small houses while maintaining accuracy across the specified flow range.
Suitable for
Individual apartment heat consumption measurement
Small residential properties and single-family houses
Individual billing and submetering in multi-dwelling buildings
Energy monitoring for maintenance and consumption control
Key specifications
Connection size: DN15 (1/2")
Nominal flow (Qp): 0.6 m3/h
Application: residential heat measurement
Measured parameters: thermal energy and volumetric flow
Form factor: compact design for tight installation spaces
How to use
Install the HYDROCAL M4 in the heating circuit following local plumbing and metering regulations, ensuring correct flow direction as indicated on the meter body. Connect the meter using compatible DN15 pipe fittings and secure joints to prevent leaks. Commission the meter by flushing the circuit to remove air, then verify zero reading before bringing the system to normal operating temperature. Readings can be taken from the meter register; for billing purposes record the meter index according to local procedures.
Usage recommendations
To ensure continued accuracy, avoid operating the meter outside its specified flow range, protect it from freezing and mechanical shock, and perform periodic inspections for leaks or debris. Follow local calibration and verification requirements for utility billing applications.

## FAQ

### How much does the B\_METERS HYDROCAL M4 residential heat meter DN15 cost, and is it available for purchase?

The price is 157.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can B\_METERS HYDROCAL M4 residential heat meter DN15 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All B\_METERS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized B\_METERS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12070812/67555715_large.webp