Guides & advice
Know your boiler
What our engineers wish every London homeowner knew before replacing a boiler — sizing, boiler types, grants that do and don't apply, and how to tell a proper installer from a corner-cutting one.
Comparison · 3 min read
Combi vs. System Boiler: Which Is Right for You?
The most common boiler question we get isn't about brands — it's combi or system. Here's how to actually decide.
Read guideGrants & Schemes · 3 min read
Boiler Upgrade Scheme Eligibility Explained
The name is misleading for most people replacing a gas boiler. Here's what the scheme is actually for.
Read guideHomeowner Guide · 3 min read
Signs You Need a New Boiler
Not every boiler fault means replacement. Here's a genuinely useful way to think about repair versus replace.
Read guideBuying Guide · 3 min read
Combi Boiler Sizing Mistakes to Avoid
Choosing the wrong size combi boiler is a costly error; here's how to avoid the most common mistakes.
Read guideBuying Guide · 3 min read
Converting From an Oil Boiler to a Gas Boiler in London
Switching from oil to gas heating in London involves key steps like checking gas availability and safe decommissioning.
Read guideHomeowner Guide · 3 min read
Boiler Replacement in a Leasehold Flat: What Consent Do You Need?
Replacing your boiler in a leasehold flat often requires formal consent for flue position changes from your freeholder or management company.
Read guideComparison · 4 min read
Unvented Cylinders: Pros and Cons for a System Boiler Replacement
Discover the key differences, benefits, and considerations of unvented cylinders to inform your London home's system boiler replacement.
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Homeowner Guide · 3 min read
What the Benchmark Checklist Is — and Why It Protects Your Warranty
Your new boiler's warranty depends on more than just a Gas Safe certificate; the Benchmark checklist is the key document.
Read guideHomeowner Guide · 3 min read
Just Bought a London Property With an Old Boiler? A First-Time Buyer's Checklist
A practical checklist for new London homeowners to assess an inherited boiler, covering safety checks and when to consider a replacement.
Read guideComparison · 3 min read
Combi vs. System Boiler: Does It Matter If Your Home Is New-Build or Period?
The age and style of your property can be the deciding factor in choosing between a combi and a system boiler.
Read guideHomeowner Guide · 4 min read
What Actually Happens on Boiler Installation Day
A clear, step-by-step walkthrough of what to expect when your new boiler is fitted, from the engineer's arrival to system handover.
Read guideHomeowner Guide · 3 min read
Gas Safety Certificate vs. Boiler Warranty: Not the Same Thing
Many homeowners confuse a Gas Safety Certificate, a Gas Safe registration, and a boiler warranty, but they are three very different things.
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Homeowner Guide · 4 min read
Boiler Replacement for Landlords and HMO Properties in London
A guide for London landlords on key considerations for boiler replacement in rental properties and HMOs, covering system choice, tenant disruption, and legal obligations.
Read guideHomeowner Guide · 4 min read
Do You Need a Power Flush Before a New Boiler?
Find out if you need a power flush before a new boiler installation and why it matters for your system's health.
Read guideBuying Guide · 4 min read
Is It Worth Fitting a Smart Thermostat With a New Boiler?
A smart thermostat can enhance a new boiler's efficiency, but it cannot solve fundamental heating system problems.
Read guideBuying Guide · 4 min read
Moving Your Boiler During a Kitchen Renovation or Loft Conversion
Moving your boiler during a renovation is more complex than a simple swap. Here’s why you need to plan it early and what the process involves.
Read guideHomeowner Guide · 4 min read
Why Condensate Pipes Freeze — and What It Means for a New Boiler
Condensate pipe freezing is a frequent winter problem; understanding it is key to a reliable new boiler installation.
Read guideBuying Guide · 3 min read
Should I Get a Power Flush With My New Boiler?
Find out if a power flush is a necessary step with your new boiler installation or an extra cost you can potentially avoid.
Read guideComparison · 4 min read
Combi vs. System Boiler for a Growing Family
Planning your family's future? Understand how your hot water needs will change and which boiler type is best for a growing household.
Read guideHomeowner Guide · 3 min read
How Long Does a New Boiler Installation Take?
A new boiler installation can take from one to two days, depending on the complexity of the job and the changes you are making.
Read guideHomeowner Guide · 4 min read
Signs Your Hot Water Cylinder Needs Replacing
Is your hot water acting up? Spot the key signs that your cylinder may be failing and needs a professional replacement.
Read guideBuying Guide · 3 min read
What Size Hot Water Cylinder Do I Need?
Choosing the right size hot water cylinder depends on your household's size and its future needs.
Read guideHomeowner Guide · 3 min read
Can I Replace Just the Cylinder, Not the Boiler?
Many homeowners wonder if they can replace just their hot water cylinder and not the boiler - we explain the possibilities and the process.
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Buying Guide · 3 min read
What Affects the Cost of a New Boiler Installation?
The price of a new boiler installation isn't fixed; several key factors determine the final cost for your London home.
Read guideHomeowner Guide · 3 min read
Moving Into a New-Build? Do You Need a Different Boiler?
If you're moving into a new-build property, you probably don't need to replace your boiler, but you should check a few key things.
Read guideHomeowner Guide · 3 min read
Boiler Installation During Winter: What to Expect
Navigating the busiest season for boiler installations in London requires planning and knowing what to expect from the process.
Read guideBuying Guide · 3 min read
How Many Radiators Can My Boiler Handle?
A simple guide to understanding how boiler output relates to the number of radiators in your home.
Read guideComparison · 3 min read
Combi Boiler vs. Electric Boiler for London Flats
Choosing the right boiler for a London flat depends on your gas connection, budget, and installation requirements.
Read guideHomeowner Guide · 4 min read
Does a New Boiler Increase Your Rental Property's Appeal?
A modern, reliable boiler is a key factor in attracting and retaining good tenants for your rental property.
Read guideHomeowner Guide · 3 min read
What to Do If Your Installer Recommends a Bigger Boiler Than Expected
Discover the legitimate reasons an installer might suggest a larger boiler and the steps you can take to verify their recommendation.
Read guideComparison · 4 min read
Heat Pump vs Gas Boiler: Which Is Right for a London Home?
Choosing between a heat pump and a gas boiler depends on your London home's setup, insulation, and heating needs.
Read guideBuying Guide · 5 min read
What a Hot Water Cylinder Replacement Costs in London
Cylinder quotes vary far more than boiler quotes, because “replace my cylinder” describes at least three different jobs. Here is what separates them on price.
Read guideHomeowner Guide · 5 min read
When to Replace a Hot Water Cylinder Rather Than Repair
Not every cylinder fault is a replacement, and not every working cylinder is worth keeping. The decision turns on which component has actually failed.
Read guideBuying Guide · 5 min read
How to Check Your Cylinder Installer Is G3 Qualified
A Gas Safe number tells you nothing about whether someone may legally fit your unvented cylinder. Here is what to ask for, and how to check it.
Read guideComparison · 5 min read
Unvented or Vented? Choosing a Replacement Cylinder
When the old cylinder goes, you get one cheap opportunity to change system type. Whether you should take it comes down to your mains supply.
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