Which Central Heating System is Right for Your West London Home?
Last month, I visited two neighbouring properties in Ealing that perfectly illustrated why choosing the right central heating system matters. Number 47, a beautifully converted Victorian terrace, still relied on its original 1980s conventional system with a massive tank dominating the upstairs airing cupboard. Next door at Number 49, a young family had just installed a modern combi boiler, liberating an entire cupboard for storage whilst slashing their energy bills.
Both systems worked. But only one worked well for the household living there.
After twenty years installing and maintaining heating systems across Acton, Ealing, and West London, I’ve learned that there’s no universal “best” heating system – only the best system for your specific property and circumstances. Let me walk you through the three main types of central heating systems you’ll find in West London homes, using real examples from properties I’ve worked on.
Conventional Central Heating: The Victorian Workhorse
How it works (and why it’s still around!)
Drive through Acton’s tree-lined streets and you’ll find dozens of period properties still running conventional heating systems installed decades ago. These “gravity fed” systems are beautifully simple: cold water enters through mains pressure, a large hot water tank sits high up (usually in the loft or top-floor cupboard), the boiler heats water in that tank, and gravity does the rest – sending hot water down through pipes to radiators and taps throughout the house.
I serviced a stunning Edwardian home on Priory Road in Acton last winter. The conventional system had been running flawlessly for thirty-five years. The owner, a retired teacher, had no interest in changing it. “Why fix what isn’t broken?” she asked, quite reasonably.
She had a point. Conventional systems are incredibly reliable – simple engineering means fewer things can go wrong. But there are three reasons why we rarely install them in modern times:
The Pressure Problem: Last year, a couple in South Ealing called us wanting to install a power shower in their conventional system home. It required additional pumps and equipment because gravity-fed pressure simply can’t compete with mains pressure. The installation cost almost doubled.
The Waste Issue: That massive tank heating water all day, whether you need it or not, wastes considerable energy. I’ve seen monthly gas bills drop by 30% when Acton homeowners switch from conventional to modern systems.
The Space Sacrifice: In West London’s increasingly valuable property market, dedicating an entire cupboard to a hot water tank feels extravagant. One Ealing client converted their freed-up tank space into a home office nook after we installed their new system.
Combi Boiler Systems: West London’s Modern Standard
Why three-quarters of our installations are Combis
Walk into any new development in Ealing or recently renovated flat in Acton, and you’ll almost certainly find a combination boiler. These compact units have revolutionised home heating by heating water on demand at the point of use – no storage tank required.
I installed a Vaillant combi boiler in a compact two-bedroom flat near Acton Central station last autumn. The young professional living there gained an entire cupboard, reduced her energy bills, and now enjoys consistent mains-pressure hot water. “I never realised how poor the pressure was in my old place until I experienced this,” she told me during the follow-up service.
The Combi Advantages:
Efficiency: You only heat what you use. No energy wasted maintaining a tank of hot water that sits unused for hours.
Pressure: Mains-pressure hot water throughout your home means powerful showers without additional pumps.
Space Saving: Crucial in West London properties where every square foot counts. I’ve seen Ealing homeowners convert freed-up tank space into storage, nurseries, even small study areas.
The Combi Limitations:
However, combis aren’t perfect for everyone. A family in North Ealing discovered this the hard way when they moved from a four-bedroom house with a conventional system to a similar-sized property with a combi boiler. With three teenage children all showering simultaneously each morning, the combi struggled to maintain pressure and temperature across multiple outlets.
The fundamental limitation: combi boilers heat water on demand, but they’re limited in how much hot water they can produce at once. Try running two showers and filling a bath simultaneously, and you’ll notice the flow rate drops significantly. For larger households with multiple bathrooms, this becomes problematic.
System Boilers: The Best of Both Worlds?
When Ealing’s larger homes need something more
Between the simplicity of conventional systems and the efficiency of combis sits the system boiler – increasingly popular in West London’s larger family homes.
I installed one in a five-bedroom Victorian conversion in West Ealing last spring. The family of six needed reliable hot water for three bathrooms, but the property lacked loft space for a traditional large tank. The solution: a compact unvented cylinder in the utility room, paired with a system boiler.
How It Works:
Mains water enters the property and flows into a pressurised cylinder where it’s heated and stored. Unlike conventional systems, everything runs at mains pressure. Unlike combis, the stored water means multiple outlets can run simultaneously without pressure drop.
The result? That West Ealing family can run two showers, fill a bath, and run the kitchen tap simultaneously without anyone complaining about temperature fluctuations. The stored cylinder provides consistent supply whilst maintaining mains pressure throughout.
The Considerations:
However, when a couple in Acton enquired about installing a system boiler in their two-bedroom terrace, I talked them out of it. The installation cost for a system boiler typically runs £500-£1,000 more than a combi, and the annual servicing requirements are more complex. For their household of two, a combi made far more economic sense.
The other critical factor: mains pressure in your area. I’ve learned through experience that certain pockets of older Acton have variable mains pressure. Installing an expensive system boiler in an area with poor mains pressure defeats the purpose entirely – you’re left with an overcomplicated system that doesn’t deliver the promised performance.
Choosing the Right System for Your Property
After two decades working across West London, here’s my honest advice based on what actually works in real homes:
Choose a Combi If:
- You live in a flat or small house (1-2 bedrooms)
- Your household rarely needs multiple hot water outlets simultaneously
- Space is at a premium
- You want the most cost-effective installation and lowest energy bills
Most Acton flats and smaller Ealing properties suit combis perfectly.
Consider a System Boiler If:
- You have a larger family home (3+ bedrooms, 2+ bathrooms)
- Multiple people need hot water simultaneously
- You have good mains pressure in your area
- Budget allows for the higher installation cost
Many larger Victorian conversions in Ealing benefit from system boilers.
Stick With Conventional If:
- Your existing system works reliably
- You’re elderly or planning to move soon
- Renovation costs don’t justify potential energy savings
- Your property has quirks that make modern systems complicated
Some older Acton properties are better left with their reliable conventional systems.
The Real Question Isn’t “What’s Best?” – It’s “What’s Best for You?”
Last week, we visited two properties on the same Ealing street. Number 23 needed a combi boiler – small household, limited space, straightforward installation. Number 27 required a system boiler – large family, multiple bathrooms, enough space for a cylinder.
Both customers asked me the same question: “Which system is best?”
The answer? The one that matches your property, household needs, and budget. After twenty years installing heating systems across West London, I’ve learned that successful heating design isn’t about following trends or choosing the newest technology – it’s about understanding how you actually use hot water in your home.
If you’re uncertain which system suits your Acton or Ealing property, give us a call. I’d rather spend twenty minutes understanding your household than install the wrong system and have you regret it for the next fifteen years.
Dave Halpin has been installing and maintaining central heating systems across West London since 2005. Gasworks London provides expert heating system installation, maintenance, and advice throughout Acton, Ealing, and surrounding areas