7 series · Natural gas, Diesel, Electric, Biomass, Coal
Industrial Hot Water Boilers
Hot water boilers for space heating, process water, washing and bathing: pressurised WNS, LDR and DZL boilers and atmospheric CWNS, CLHS, CLDR and CWDR boilers, for gas, oil, electricity, biomass or coal.
Selection
How to choose
Every series below links to its full parameter table: rated thermal power, pressure, fuel or power consumption, dimensions and weight.
Product range
Hot Water Boilers
7 series
Specifications at a glance
Compare output and pressure
Ranges from each series’ parameter table. Open a series for fuel consumption, connections, dimensions and weight of every size.
- WNS Pressurized Oil/Gas Fired Hot Water Boiler0.35–14 MW · 0.7–1 MPa→
- CWNS Horizontal Oil/Gas Fired Hot Water Boiler0.7–2.8 MW · Atmospheric→
- CLHS Vertical Oil/Gas Fired Hot Water Boiler0.06–0.58 MW · Atmospheric→
- LDR Electric Pressure Hot Water Boiler0.7 MPa→
- CLDR Vertical Electric Hot Water Boiler0.03–0.65 MW · Atmospheric→
- CWDR Horizontal Electric Hot Water Boiler0.7–7 MW · Atmospheric→
- DZL Biomass/Coal Fired Hot Water Boiler0.7–7 MW · 0.7–1.6 MPa→
Projects
Hot Water Boilers in operation
Common questions
Questions about hot water boilers
- Pressurised or atmospheric hot water boiler — which one?
- Pressurised boilers (WNS, LDR, DZL) work at 0.7 MPa and above and suit closed heating networks and higher supply temperatures. Atmospheric boilers (CWNS, CLHS, CLDR, CWDR) run without pressure in the boiler body, for heating and washing water.
- Which fuel should I choose for a hot water boiler?
- Gas or oil (WNS, CWNS, CLHS) where the fuel is available, electric (LDR, CLDR, CWDR) for no combustion on site, and DZL for biomass or coal where solid fuel is the cheapest.
- What do you need for a quotation?
- Output, working pressure, fuel, power supply (for electric units), the application and the destination country.
Quotation
Quote for hot water boilers
Tell us the output, working pressure, fuel and application. An engineer replies with a model selection and a quotation.
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- Emailmanager@wilfordboiler.com











