Complete Guide to Boiler Types in 2025
Discover the different types of boilers available through the ECO4 free boiler scheme. Compare features, efficiency ratings, and find the perfect boiler for your home.
Quick Navigation
Types of Boilers Available
All boiler types are available through the ECO4 scheme, subject to your home's requirements and suitability assessment.
Combination boilers provide heating and hot water on demand without needing a separate water tank.
Advantages
- Space-saving design
- Instant hot water
- No water tank required
- Lower installation costs
- Good water pressure
Best For
1-3 bedroom homes with one bathroom
Popular Brands
System boilers work with a hot water cylinder but don't need a cold water tank in the loft.
Advantages
- Good for multiple bathrooms
- Consistent water pressure
- No loft tank required
- Faster hot water recovery
- Compatible with solar thermal
Best For
3-4 bedroom homes with multiple bathrooms
Popular Brands
Traditional boilers that work with both a hot water cylinder and cold water tank.
Advantages
- Excellent for large homes
- Multiple hot water outlets
- Compatible with older systems
- Good for low water pressure areas
- Reliable hot water supply
Best For
Large homes with multiple bathrooms and existing tank systems
Popular Brands
High-efficiency boilers that recover heat from waste gases, required by law for new installations.
Advantages
- Maximum efficiency
- Lower running costs
- Environmentally friendly
- Government compliant
- Available in all types
Best For
Any home requiring a new boiler installation
Popular Brands
Frequently Asked Questions
What is the most efficient type of boiler?
Condensing boilers are the most efficient type, achieving up to 98% efficiency. They work by recovering heat from waste gases that would otherwise be lost. All new boilers installed in the UK must be condensing boilers by law.
How do I choose the right boiler type for my home?
Consider your home size, number of bathrooms, water pressure, and space availability. Combi boilers are best for small homes, system boilers for medium homes with multiple bathrooms, and regular boilers for large homes with existing tank systems.
What is the average cost of a new boiler?
Boiler costs vary by type: Combi boilers (£1,500-£3,500), System boilers (£2,000-£4,000), and Regular boilers (£1,800-£3,800). Through the ECO4 scheme, eligible homeowners can get a free boiler installation.
How long does a boiler installation take?
A typical boiler installation takes 1-2 days. Combi boiler installations are usually quicker (1 day), while system and regular boiler installations may take 2 days due to additional components.
Ready to Upgrade Your Boiler?
Check if you qualify for a free boiler through the ECO4 scheme. Our experts will help you choose the right boiler type for your home.