Best Oil Boiler Brands [2025]

When selecting an oil boiler for your home, reliability, efficiency, and performance are key factors to consider. This guide examines the leading oil boiler manufacturers and their current models to help you make an informed decision.

Top Rated Oil Boilers

Worcester Bosch oil boilers

Worcester Bosch

Worcester Bosch maintains its position as an industry leader with the impressive Greenstar Danesmoor range. These boilers achieve exceptional efficiency ratings of up to 93.3%, earning them an A-rating for energy performance. The range offers remarkable versatility, with outputs from 12kW to 32kW, making them suitable for homes of various sizes.

What sets the Greenstar Danesmoor apart is its compatibility with solar thermal systems, allowing homeowners to enhance their energy savings through renewable integration. The range comes with a comprehensive 5-year warranty, which can be extended to 10 years for additional peace of mind.

Beyond efficiency, these boilers excel in their build quality and sophisticated control systems. The advanced temperature management features allow precise control over your heating, potentially reducing energy consumption while maintaining optimal comfort. Their sealed system models perform exceptionally well in areas with poor water pressure, while their regular boilers integrate seamlessly with traditional heating systems.

grant oil boilers

Grant

Grant's Vortex Pro range showcases the company's commitment to innovation in oil-fired heating technology. These boilers achieve impressive efficiency ratings of up to 93.3%, securing an A-rating for energy performance. What truly distinguishes the Vortex Pro series is its compatibility with HVO (Hydrotreated Vegetable Oil) fuel, offering homeowners a more sustainable heating option for the future.

The range features a user-friendly digital diagnostic display, simplifying maintenance and system monitoring. This attention to user experience extends to their comprehensive 5-year warranty on both parts and labour. The unique heat exchanger design not only contributes to the boiler's high efficiency but also ensures reliable, long-term performance.

Beyond technical specifications, Grant's commitment to innovation shows in their range of versatility. From internal combi models to outdoor utility boilers, they offer solutions for various property types and installation requirements. The Vortex Pro range seamlessly bridges the gap between domestic and light commercial applications, making it a versatile choice for different heating needs.

firebird oil boiler

Firebird

Firebird's Envirogreen HE range represents a perfect balance of efficiency and advanced technology. These boilers achieve impressive efficiency ratings of up to 93.3%, earning an A-rating for energy performance. The range stands out for its rapid re-heat function, delivering hot water quickly when needed, while maintaining efficient operation.

Environmental consciousness is at the forefront of Firebird's design philosophy. The incorporation of low NOx burners significantly reduces emissions, while HVO fuel compatibility offers homeowners a more sustainable heating option. This forward-thinking approach ensures the Envirogreen HE range meets both current environmental standards and future sustainability goals.

The boilers' compact design and exceptionally quiet operation make them ideal for installation in various locations throughout the home, including kitchens and utility rooms. Like their competitors, Firebird maintains high standards of build quality and reliability, suitable for both replacement and new installation projects.

baxi oil boiler

Baxi

While Baxi is predominantly known for their gas boilers, their 600 Combi LPG model deserves attention for its outstanding performance characteristics. This boiler achieves an impressive water heating efficiency of 93%, placing it among the top performers in its class. The unit's exceptionally quiet operation makes it particularly suitable for installation in living spaces, addressing a common concern for many homeowners.

Baxi stands behind thier product with a comprehensive 7-year warranty, offering excellent peace of mind for homeowners. The boiler's compact dimensions make it an ideal choice for smaller homes or properties where space is at a premium. Despite being designed primarily for LPG, the combination of high efficiency, quiet operation, and reliable performance makes it a compelling option in the current market.

Get in touch 

For professional guidance on oil boiler selection and installation in Harrogate, contact Green & Reliable on 07717574470. Our experienced engineers can help you choose and install the most suitable oil boiler for your home.