VaillantHeat Boiler Systems Designed Around Your Needs

From compact wall-hung combi boilers to large-scale industrial steam generators, we guide you to the right heating solution. Expert sizing, straightforward installation, and dependable aftercare across 48 countries.

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Boiler & Heating Product Range

Gas, oil, and condensing boilers alongside industrial burners and integrated heat pump systems. Every unit is CE and ISO certified for commercial and industrial applications.

Gas Condensing Boilers

Gas Condensing Boilers

Wall-hung and floor-standing condensing boilers from 24 kW to 150 kW. Thermal efficiency up to 98% with modulating burner control and low NOx emissions.

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Industrial Steam Boilers

Industrial Steam Boilers

Fire-tube and water-tube steam boilers delivering 500 kg/h to 20,000 kg/h at pressures up to 25 bar. ASME-stamped for process, pharmaceutical, and food industries.

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Industrial Burners

Industrial Burners

Gas, oil, and dual-fuel burners from 30 kW to 14,000 kW thermal output. Precision flame control with combustion efficiency above 95%.

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Hot Water Boilers

Hot Water Boilers

Cascade-ready hot water boilers for commercial buildings and district heating. Output from 80 kW to 2,400 kW with smart load balancing.

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Heat Pumps

Heat Pump Systems

Air-source and ground-source heat pumps using R-290 natural refrigerant. COP up to 5.2 for space heating and domestic hot water production.

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Heating Controls

Smart Heating Controls

Weather-compensated controllers, cascade managers, and BMS-ready interfaces for optimized heating plant performance and remote monitoring.

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Industries We Serve

Application-matched heating solutions for the sectors where reliable thermal output matters most.

Food & Beverage

Food & Beverage

Steam and hot water for cooking, pasteurization, CIP cleaning, and process heating in food manufacturing plants.

Pharmaceutical

Pharmaceutical

Clean steam generation, precise temperature control, and GMP-compliant heating for pharmaceutical production lines.

Commercial Buildings

Commercial Buildings

Cascade boiler systems and heat pumps for offices, hotels, hospitals, and educational campuses with variable heating loads.

Industrial Processing

Industrial Processing

High-capacity steam and thermal fluid heating for chemical, textile, paper, and rubber manufacturing processes.

District Heating

District Heating

Large-scale hot water generators and heat pump systems feeding district heating networks for residential and mixed-use developments.

Cold Chain

Cold Chain & Logistics

Defrost heating, warehouse space heating, and hot water supply for cold storage facilities and distribution hubs.

20+ Years of Experience
8,000+ Units Delivered Annually
48 Countries Served
65 Application Engineers

Heating Insights

Practical guides and technical articles to help you make informed heating decisions.

Guide to condensing boiler efficiency
Efficiency

Condensing vs. Non-Condensing Boilers: What You Need to Know

Condensing boilers recover latent heat from flue gases, achieving 92-98% gross thermal efficiency versus 78-85% for non-condensing models (per EN 15502 testing methodology).

Boiler maintenance best practices
Maintenance

5 Preventive Maintenance Steps That Extend Boiler Lifespan

Regular water treatment, burner tuning, and safety valve testing can add 5-10 years to your boiler plant investment.

Heat pump retrofit guide
Sustainability

When Should You Replace Your Boiler with a Heat Pump?

A practical decision framework comparing lifecycle costs, carbon savings, and building suitability for heat pump retrofits.

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Recent Application Highlights

Selected installations demonstrating how VaillantHeat systems address real heating challenges across different sectors.

Food & Beverage

Dairy Processing Plant — Netherlands

A mid-sized dairy processor required 6,000 kg/h of clean steam at 10 bar for pasteurization and CIP cleaning cycles. VaillantHeat supplied two fire-tube steam boilers in an N+1 redundant configuration with condensate recovery, achieving a measured fuel reduction of 18% compared to the facility's previous non-condensing boiler. The system was commissioned in Q3 2022 and has operated at 99.2% uptime through December 2025, verified by the plant's BMS data logs.

Commercial Buildings

University Campus Heating — Germany

A 45,000 m2 university campus in North Rhine-Westphalia replaced its 1990s-era atmospheric boiler plant with a VaillantHeat cascade system of 6 x 300 kW condensing boilers plus weather-compensated controls. Measured gas consumption dropped from 2.1 GWh/year to 1.54 GWh/year (a 27% reduction), confirmed by utility billing data over the 2023-2024 heating seasons. The cascade approach allowed staged replacement during term breaks, avoiding heating interruption.

District Heating

Mixed-Use Development — Poland

A new-build residential and commercial development in Wroclaw required a phased heating plant starting at 2,000 kW with expansion to 5,000 kW. VaillantHeat designed a modular hot water plant with 4 initial modules, BACnet integration with the district BMS, and pre-installed connections for future heat pump integration. Phase one was delivered in 14 weeks and commissioned in November 2024, serving 320 residential units and 8,000 m2 of retail space.

Frequently Asked Questions

Common questions about boiler selection, installation, and maintenance. Can't find your answer? Our engineers are happy to help.

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The best choice depends on your building's insulation level, available outdoor space, local energy prices, and carbon reduction targets. Gas condensing boilers remain cost-effective for older buildings with high flow temperatures, while heat pumps excel in well-insulated buildings with underfloor heating. Our application engineers can model both scenarios for your specific facility.

Our product range spans 24 kW wall-hung combi boilers for small commercial spaces through to 20,000 kg/h industrial steam boilers at pressures up to 25 bar. Cascade configurations allow modular scaling beyond these limits. We recommend a site heat loss calculation before sizing, which our team provides at no cost.

Yes. Our certified service network covers 48 countries. We offer turnkey installation, burner commissioning, initial water treatment setup, and BMS integration. Post-installation, we provide scheduled preventive maintenance contracts with guaranteed response times for emergency callouts.

All VaillantHeat products carry CE marking and ISO 9001/14001 quality and environmental certifications. Our pressure vessels are PED-compliant for European markets and ASME-stamped for North America. Burner systems meet NFPA safety standards and local emission regulations in each operating territory.

Not Sure Which Boiler Is Right for You?

Our application engineers will assess your facility's heating demand and recommend the most cost-effective solution. No obligation, no jargon.

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