HVAC Guides
Step-by-step hvac guides — fixes, fault codes and FAQs.
- How to Bleed a RadiatorA radiator that is cold at the top but warm at the bottom has trapped air. This guide covers bleeding the radiator to restore full heat.
- How to Bleed a RadiatorA radiator that is cold at the top but warm at the bottom has trapped air. This guide covers bleeding the radiator to restore full heat.
- How to Bleed a Radiator ProperlyBleeding a radiator is the most searched DIY question in the UK. This guide covers the correct method to remove trapped air and restore full heat to your radiators.
- How to Clean an Air Conditioning Unit FilterA dirty air conditioning unit filter reduces efficiency. This guide covers cleaning the AC filter.
- How to Clean Window Trickle VentsBlocked trickle vents can reduce ventilation. This guide covers cleaning window trickle vents.
- How to Clear Baxi Boiler E133 ErrorBaxi boiler E133 error indicates an ignition fault. This guide covers diagnosing and fixing the E133 error.
- How to Clear Baxi Boiler E133 Ignition FaultBaxi boiler E133 ignition fault indicates a problem with the gas supply or ignition system. This guide covers diagnosing and fixing the E133 error.
- How to Fix a Baxi Boiler 110 Error CodeThe Baxi 110 error code indicates low water pressure in your heating system. This is one of the few boiler errors you can safely fix yourself. This guide covers repressurising a Baxi boiler.
- How to Fix a Boiler Leaking WaterA boiler leaking water is a serious issue that can indicate pressure problems or failed components. This guide covers diagnosing and responding to a leaking boiler.
- How to Fix a Boiler Losing PressureA boiler losing pressure is a common issue that can affect your heating. This guide covers diagnosing and fixing the problem.
- How to Fix a Boiler Making a Banging Noise (Kettling)A boiler making a banging noise (kettling) can indicate limescale buildup. This guide covers diagnosing and fixing the issue.
- How to Fix a Boiler Not IgnitingA boiler that will not ignite leaves you without heating or hot water. This guide covers common causes and safe checks before calling an engineer.
- How to Fix a Boiler Pilot Light That Has Gone OutA boiler pilot light that has gone out can leave you without heating. This guide covers relighting the pilot light safely.
- How to Fix a Boiler Short CyclingA boiler short cycling (turning on and off frequently) wastes energy. This guide covers diagnosing and fixing the issue.
- How to Fix a Boiler Showing a Fault Code and Won't ResetA boiler showing a fault code that will not reset needs diagnosis. This guide covers common fault codes and fixes.
- How to Fix a Boiler with No Hot WaterA boiler with no hot water is a frustrating problem. This guide covers diagnosing and fixing common causes.
- How to Fix a Central Heating PumpA faulty central heating pump can stop your radiators from heating. This guide covers diagnosing and fixing a central heating pump.
- How to Fix a Damp Patch on a WallA damp patch on a wall can indicate a problem. This guide covers diagnosing and fixing cosmetic damp patches.
- How to Fix a Frozen Condensate PipeA frozen condensate pipe can cause your boiler to shut down. This guide covers safely thawing a frozen condensate pipe.
- How to Fix a Heating Timer Not WorkingA heating timer that does not work can leave you without heat. This guide covers diagnosing and fixing the issue.
- How to Fix a Leaking Boiler PipeA leaking boiler pipe can cause water damage and lower system pressure. This guide covers diagnosing and fixing a leaking pipe near the boiler.
- How to Fix a Leaking Radiator Bleed ValveA leaking radiator bleed valve can drip water onto your floor and lower the pressure in your heating system. This guide covers diagnosing and fixing a leaking bleed valve.
- How to Fix a Leaking Radiator ValveA leaking radiator valve can cause water damage. This guide covers fixing a leaking radiator valve.
- How to Fix a Noisy BoilerA noisy boiler can be alarming and may indicate a problem with the system. This guide covers diagnosing and fixing a noisy boiler.
- How to Fix a Portable AC Not CoolingA portable AC that is not cooling may need cleaning or maintenance. This guide covers diagnosing and fixing the issue.
- How to Fix a Radiator Cold at the BottomA radiator that is cold at the bottom but warm at the top often indicates a buildup of sludge or debris in the heating system. This guide covers diagnosing and fixing the issue.
- How to Fix a Radiator Not HeatingA radiator that is not heating at all could have a valve issue or airlock. This guide covers diagnosing and fixing the problem.
- How to Fix a Smart Thermostat Not ConnectingA smart thermostat that does not connect to Wi-Fi can be frustrating. This guide covers diagnosing and fixing the issue.
- How to Fix a Thermostat Not WorkingA thermostat that does not work can leave your home too hot or too cold. This guide covers diagnosing and fixing the issue.
- How to Fix a Worcester Bosch EA Error CodeThe Worcester Bosch EA error code is one of the most common boiler fault codes in the UK. This guide covers what the code means and when you can safely reset it yourself.
- How to Fix Boiler Pressure DroppingA boiler that keeps losing pressure indicates a leak or a faulty component. This guide covers diagnosing and fixing the issue.
- How to Fix Central Heating That Won't Turn OnCentral heating that will not turn on can be caused by several issues. This guide covers diagnosing and fixing the problem.
- How to Fix Condensation on WindowsCondensation on windows can indicate poor ventilation. This guide covers reducing and preventing window condensation.
- How to Fix Loft Insulation GapsGaps in loft insulation can waste energy. This guide covers identifying and fixing loft insulation gaps.
- How to Fix Low Boiler PressureLow boiler pressure is a common issue that can affect your heating and hot water. This guide covers diagnosing and fixing low boiler pressure.
- How to Fix One Radiator Cold While Others Are FineA single cold radiator when others are hot indicates a specific problem. This guide covers diagnosing and fixing the issue.
- How to Fix Radiators Not Heating EvenlyRadiators that do not heat evenly can make your home uncomfortable. This guide covers diagnosing and fixing the issue.
- How to Install a Bathroom Extractor Fan for CondensationA bathroom extractor fan removes moisture and prevents mould. This guide covers installing a bathroom extractor fan.
- How to Install a Draught ExcluderA draught excluder stops cold air from entering your home. This guide covers installing a door or window draught excluder.
- How to Install Radiator Reflector PanelsRadiator reflector panels reduce heat loss through walls. This guide covers installing radiator reflector panels.
- How to Remove Mould from a Bathroom CeilingMould on a bathroom ceiling is common and can be removed easily. This guide covers cleaning and preventing mould.