Guides & advice
Know your heating system
What our engineers wish every London homeowner knew — about radiators, power flushing, underfloor heating and the difference between fixing the symptom and fixing the system.
Power Flushing · 4 min read
Signs Your Central Heating System Needs a Power Flush
If your radiators are cold at the bottom, you're constantly bleeding them, or your heating is noisy and uneven, your system likely needs a power flush to remove sludge and restore performance.
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Radiators · 3 min read
Radiator Replacement Cost: What Actually Influences the Price
The cost of replacing a radiator isn't a single fixed figure. It's influenced by the radiator model you choose, the complexity of installation, and whether existing pipework needs altering.
Read guidePower Flushing · 4 min read
How Often Should a Central Heating System Be Power Flushed?
A power flush isn't scheduled by the calendar but by your system's condition. The need depends on factors like water quality, maintenance history, and visible performance issues.
Read guidePower Flushing · 4 min read
How Long Does a Power Flush Take? What to Expect on the Day
For a typical London property with 8-12 radiators, a professional power flush is a planned day's work. This guide walks you through the process, from initial assessment to final inhibitor dosing.
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Radiators · 3 min read
Column vs Panel vs Designer Radiators: Which Suits Your Room
Choosing between column, panel or designer radiators depends on your room's style, space and heat needs. Our guide helps London homeowners select the right type for their property.
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System Health · 3 min read
What Is Radiator Balancing and Why Does It Matter?
Radiator balancing adjusts water flow to ensure all radiators heat evenly, improving comfort and system efficiency. Discover why it's a key part of maintaining a well-functioning heating system.
Read guideSystem Health · 4 min read
Why Is One Room Always Cold? Diagnosing Uneven Heat Distribution
A persistently cold room is a common heating headache. This guide helps you diagnose whether the issue is radiator size, system balancing, sludge buildup, or a lack of heating in that zone.
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Radiators · 4 min read
TRVs Explained: Thermostatic Radiator Valves and Room-by-Room Heat Control
TRVs allow you to control the temperature in each room independently. This guide explains how they work, when they need replacing, and how they fit into modern heating systems.
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Underfloor Heating · 4 min read
Underfloor Heating Installation Cost: Wet vs Electric Systems Compared
Choosing between wet and electric underfloor heating involves upfront costs, installation complexity, and long-term running expenses. This guide explains the key qualitative factors that determine your final investment.
Read guideSmart Controls · 3 min read
Smart Thermostat Installation Cost: Hive vs Nest vs Tado, Installed Properly
Understanding the true installed cost of smart thermostats like Hive, Nest, and Tado is key. Professional installation ensures compatibility, safety, and optimal performance beyond the box.
Read guideRadiators · 4 min read
How to Tell If Your Radiator Is the Wrong Size for the Room
If your radiator is slow to heat, never gets truly warm, or has temperature inconsistencies, it may be undersized. This is a common issue in home extensions and loft conversions where heating needs are miscalculated.
Read guideUnderfloor Heating · 4 min read
Does Underfloor Heating Work With Your Existing Boiler?
Underfloor heating systems typically require lower flow temperatures than radiators. A blending manifold is key to compatibility, but a professional survey is essential to confirm your boiler can support it.
Read guideSmart Controls · 4 min read
Smart Heating Zoning Explained: Room-by-Room Control That Actually Works
Not every home needs a smart radiator on every wall. We explain the practical differences between smart thermostat control, heating zones, and individual radiator valves to help you invest wisely.
Read guideUnderfloor Heating · 3 min read
Can You Add Underfloor Heating to Just One Room?
Yes, you can add underfloor heating to a single room without altering your home's entire heating system. This is most common for extensions, kitchens, or bathrooms, using dedicated zoning on your manifold.
Read guideSystem Health · 3 min read
Preparing for a Heating Survey: What to Check Before the Engineer Arrives
A heating survey is most effective when you're prepared. This checklist helps you gather key details about your system's performance and history before the professional arrives.
Read guideSystem Health · 3 min read
Central Heating System Upgrade vs Boiler Replacement: What’s the Difference
A boiler replacement and a full system upgrade are distinct projects. This guide explains the different scopes of work and why many heating complaints stem from the system, not the appliance.
Read guideRenovation · 4 min read
Extension or Loft Conversion? Why Your Heating System Needs Resizing Too
A new extension or loft conversion changes your home's heating demands. Without resizing your system, you risk uneven temperatures and inefficiency. Plan this work alongside the build, not as an afterthought.
Read guideRadiators · 4 min read
Why Is My Radiator Cold at the Top or Bottom? 5 Causes Explained
A radiator cold at the top typically has trapped air, while one cold at the bottom often suffers from sludge buildup. Other causes include system imbalance, faulty thermostatic valves, or closed lockshield valves.
Read guideSystem Health · 4 min read
Why Won't My Heating System Hold Pressure? System-Level Causes Explained
If your heating system won't hold pressure, the cause is often a system-level issue we can resolve, not an internal boiler fault. This guide explains the common culprits and solutions.
Read guidePower Flushing · 4 min read
How Much Sludge Is Too Much? Recognising a System That Needs a Flush
Determining when sludge requires a power flush involves specific diagnostic checks. This guide details how to assess severity through practical tests and symptoms, helping you plan maintenance effectively.
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System Health · 4 min read
Why Does My Heating Take So Long to Warm Up?
A slow-warming heating system is often due to issues like poor circulation, sludge, or incorrect balancing. We detail the five main causes and the professional fixes for each, from power flushing to system balancing.
Read guideRadiators · 4 min read
TRV Not Working? Common Faults and Fixes Explained
A TRV not working properly can stem from several distinct faults. This guide explains how to diagnose and address a stuck valve pin, a worn seat causing drips, incorrect placement, and trapped air.
Read guideSystem Health · 4 min read
Zone Valve Problems: Symptoms and What They Mean
Zone valve faults disrupt your heating control, leading to uneven temperatures and wasted energy. This guide explains the common symptoms, their causes, and the appropriate solutions for each type of failure.
Read guideSystem Health · 4 min read
What Does a Magnetic Filter Do and Do You Need One?
A magnetic filter captures sludge and debris in your heating system, improving efficiency and preventing damage. This guide explains how it works and which systems benefit most.
Read guideRadiators · 4 min read
Radiator Sizing Explained: Why BTU Calculations Matter
Choosing the correct radiator size requires precise calculations, not guesswork. This guide explains the key factors in BTU sizing and why a professional survey is essential for optimal heating performance.
Read guideSystem Health · 4 min read
System Rebalancing vs a Power Flush: How to Tell Which One You Need
Uneven heating can be caused by two distinct issues: system imbalance or sludge. This guide helps you identify the specific symptoms of each and explains why a combined approach is often the most effective solution.
Read guideSmart Controls · 4 min read
Smart Heating Controls vs a Traditional Thermostat: What Changes When an Engineer Installs Them
Upgrading to smart heating controls involves more than a simple thermostat swap. A professional installation ensures wiring compatibility, correct zone configuration, and schedules tailored to your home's actual heat loss.
Read guideSystem Health · 4 min read
Noisy Radiators and Pipes: What the Different Sounds Mean
A noisy heating system can be disruptive and concerning. Different sounds like banging, gurgling, ticking, or whistling each point to specific issues within your central heating system, from trapped air to pipework expansion.
Read guideSystem Health · 4 min read
How Long Does a Whole-System Heating Survey Take?
A professional heating survey for your London home typically takes 60 to 90 minutes. The duration depends on your property size, system complexity, and specific requirements for radiators, underfloor heating, and controls.
Read guideSystem Health · 4 min read
Should You Repressurise Your Own System, or Call an Engineer?
Topping up pressure after bleeding a radiator is often a safe DIY job. However, if your system needs frequent repressurising, it's a sign of an underlying fault that needs professional investigation.
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