--- title: How To Improve Boiler Efficiency And Cut Energy Waste description: Learn how to improve boiler efficiency, reduce wasted energy and manage heating costs with practical maintenance tips and smarter heating controls. image: https://www.argcontracts.co.uk/hubfs/how-to-improve-boiler-efficiency-and-reduce-wasted-energy.jpg --- [![Contracts-Logo-Website](https://www.argcontracts.co.uk/hs-fs/hubfs/Act3%20Child/images/Contracts-Logo-Website.webp?width=149&height=70&name=Contracts-Logo-Website.webp "Contracts-Logo-Website")](https://www.argcontracts.co.uk/) [![Contracts-Logo-Website-1](https://www.argcontracts.co.uk/hs-fs/hubfs/Contracts-Logo-Website-1.png?width=149&height=70&name=Contracts-Logo-Website-1.png "Contracts-Logo-Website-1")](https://www.argcontracts.co.uk/) - [About](https://www.argcontracts.co.uk/about) - Services - [Boiler Installation](https://www.argcontracts.co.uk/boiler-installation) - [General Plumbing Work](https://www.argcontracts.co.uk/general-plumbers) - [Bathroom Installation](https://www.argcontracts.co.uk/bathroom-fitter) - [Boiler Repair](https://www.argcontracts.co.uk/boiler-repair) - [Boiler Servicing](https://www.argcontracts.co.uk/boiler-servicing) - Boiler Options - [Combi Boiler Installation](https://www.argcontracts.co.uk/combi-boiler-installation) - [System Boiler Installation](https://www.argcontracts.co.uk/system-boiler-installation) - [Electric Boiler Installation](https://www.argcontracts.co.uk/new-electric-boiler) - [Heat only/Regular Installation](https://www.argcontracts.co.uk/regular-boiler) - [Pricing](https://www.argcontracts.co.uk/pricing) [![Get A Quote](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/148104347/interactive-387189251311.png)](https://www.argcontracts.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLIfzx3iAjaq2IpJI3owchGHXoigO9vE3p2wCmdjkYzzJTjTS5CRtB1Xq4d4MSMJtAtxt5ISLHYDeZNAbot9T2bLcUMwIDTenq4u3j%2B7bTY%2BLJ7bj8Z%2FxUwHSW4cmMwlPGMSMe4Te0zIWk%2Fyz%2FoHf1gshcmx0UM5RNT1HteZl2oasK%2BJZrxk9OqhfOY21xsW5jQsLExUHnhhnJC9jQIp%2Ffk%2FIRJ9DYY%3D&webInteractiveContentId=387189251311&portalId=148104347) [Blog](https://www.argcontracts.co.uk/blog) [![Get A Quote](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/148104347/interactive-387189251311.png)](https://www.argcontracts.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLIfzx3iAjaq2IpJI3owchGHXoigO9vE3p2wCmdjkYzzJTjTS5CRtB1Xq4d4MSMJtAtxt5ISLHYDeZNAbot9T2bLcUMwIDTenq4u3j%2B7bTY%2BLJ7bj8Z%2FxUwHSW4cmMwlPGMSMe4Te0zIWk%2Fyz%2FoHf1gshcmx0UM5RNT1HteZl2oasK%2BJZrxk9OqhfOY21xsW5jQsLExUHnhhnJC9jQIp%2Ffk%2FIRJ9DYY%3D&webInteractiveContentId=387189251311&portalId=148104347) [Blog](https://www.argcontracts.co.uk/blog) - [About](https://www.argcontracts.co.uk/about) - Services - [Boiler Installation](https://www.argcontracts.co.uk/boiler-installation) - [General Plumbing Work](https://www.argcontracts.co.uk/general-plumbers) - [Bathroom Installation](https://www.argcontracts.co.uk/bathroom-fitter) - [Boiler Repair](https://www.argcontracts.co.uk/boiler-repair) - [Boiler Servicing](https://www.argcontracts.co.uk/boiler-servicing) - Boiler Options - [Combi Boiler Installation](https://www.argcontracts.co.uk/combi-boiler-installation) - [System Boiler Installation](https://www.argcontracts.co.uk/system-boiler-installation) - [Electric Boiler Installation](https://www.argcontracts.co.uk/new-electric-boiler) - [Heat only/Regular Installation](https://www.argcontracts.co.uk/regular-boiler) - [Pricing](https://www.argcontracts.co.uk/pricing) [![Contracts-Logo-Website](https://www.argcontracts.co.uk/hs-fs/hubfs/Act3%20Child/images/Contracts-Logo-Website.webp?width=174&height=82&name=Contracts-Logo-Website.webp)](https://www.argcontracts.co.uk) [020 8804 8008](tel:02088048008) [![Get A Quote](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/148104347/interactive-387189251311.png)](https://www.argcontracts.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLIfzx3iAjaq2IpJI3owchGHXoigO9vE3p2wCmdjkYzzJTjTS5CRtB1Xq4d4MSMJtAtxt5ISLHYDeZNAbot9T2bLcUMwIDTenq4u3j%2B7bTY%2BLJ7bj8Z%2FxUwHSW4cmMwlPGMSMe4Te0zIWk%2Fyz%2FoHf1gshcmx0UM5RNT1HteZl2oasK%2BJZrxk9OqhfOY21xsW5jQsLExUHnhhnJC9jQIp%2Ffk%2FIRJ9DYY%3D&webInteractiveContentId=387189251311&portalId=148104347) [020 8804 8008](tel:020%208804%208008)[contracts@arggroup](mailto:contracts@arggroup) ARG Group, Unit 2, New Ford Road Waltham Cross, Herts EN8 7PH # How To Improve Boiler Efficiency And Reduce Wasted Energy By [**ARG Contracts**](https://www.argcontracts.co.uk/blog/author/arg-contracts) on Oct 26, 2026, 11:00:01 AM ![How to improve boiler efficiency, illustrated by a domestic heating system with a boiler, expansion vessels, pressure gauge and connected pipework.](https://www.argcontracts.co.uk/hubfs/how-to-improve-boiler-efficiency-and-reduce-wasted-energy.jpg) Understanding [how to improve boiler efficiency](https://www.argcontracts.co.uk/boiler-servicing) can help you get more from your existing heating system without replacing it. [![Get in touch ](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/148104347/interactive-387189316825.png)](https://www.argcontracts.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLJHC1ye7ZAWdnb2cmHofKvjwuv%2FvvRevdYsa92Xu22q4QmSUcS3kdk9zWBpW3tzyQITP%2FNju2RodfTvzHap4X%2BAu39w%2F3CnRdv1TCFLVi0%2Fz2VUxNsIRk2KPwTxUutaNDN8tyvgmB0gOtIsBY3vXiy13iLYEnFo0YrSFuvfPCzb8iSJbTiTuKRU3%2Fqn%2Ba%2Ff%2FDOPCiSR%2BDGhU0dQm7P3Uka7I1U%3D&webInteractiveContentId=387189316825&portalId=148104347) Wasted energy can result from heating rooms unnecessarily, unsuitable settings, poorly performing radiators or inadequate boiler maintenance. A few sensible changes can improve performance while keeping your home comfortable. ## **Use Your Heating Controls Properly** Heating controls help you manage when and where energy is used. Depending on your system, you may have: - A timer or programmer - A room thermostat - A smart thermostat - Thermostatic radiator valves Set your heating around your normal routine rather than leaving it running unnecessarily. For example, an empty home may not need heating to the same temperature during the day as it does in the evening. This is one of the simplest energy saving heating tips because it reduces unnecessary heating without sacrificing comfort. ## **Do Not Turn The Thermostat Up Just To Heat The House Faster** Setting the thermostat much higher will not usually make your home warm up faster. The thermostat tells the heating system what temperature to reach. Setting it excessively high may simply cause the heating to run until the room becomes warmer than necessary. Choosing a comfortable target temperature is more sensible and can help reduce heating bills without compromising comfort. ## **Review The Boiler Flow Temperature Carefully** If you are researching how to improve boiler efficiency, you may encounter advice about lowering the boiler's flow temperature. Flow temperature is the temperature of water sent from the boiler around the heating system. Modern condensing boilers can operate more efficiently when water returns at a lower temperature, allowing better use of their condensing technology. However, settings should not be changed without understanding the system. The appropriate settings depend on your boiler, property and heating setup. On many combi boilers, the central heating flow-temperature setting can be adjusted separately from the domestic hot-water temperature setting. Follow the manufacturer's instructions and seek professional advice if unsure. ## **Keep Radiators Working Properly** Radiators play an important role in distributing heat around your home. A radiator that is cold at the top may contain trapped air, which bleeding can help release. If it remains cold at the bottom or heats unevenly, another issue may need investigation. Keep large furniture away from radiators and avoid covering them with curtains, as both can restrict heat distribution. These are simple energy saving heating tips that can help rooms warm more effectively. ## **Check System Pressure** Boiler pressure should remain within the manufacturer's recommended range. Low pressure may prevent heating from operating properly, while excessive or fluctuating pressure can indicate a fault. You can usually check the pressure using the boiler's gauge or digital display. Some systems can be repressurised by following the manufacturer's instructions. However, repeatedly dropping pressure should be professionally investigated rather than continually topped up. ## **Maintain The Heating System** Regular heating system maintenance supports reliability and performance. Corrosion, debris, worn components and faulty valves can affect water circulation. Unresolved problems may restrict circulation, reduce heating performance and increase the energy needed to keep your home comfortable. Routine maintenance and prompt repairs are therefore important parts of how to improve boiler efficiency over time. ## **Arrange Annual Boiler Servicing** Alongside heating system maintenance, an annual service allows a Gas Safe registered engineer to inspect a gas [boiler](https://www.argcontracts.co.uk/combi-boiler-installation) and check its safe, correct operation. Servicing can identify developing problems and support reliable performance. It should not be something you arrange only when the boiler starts behaving unusually. Regular servicing may also be required to maintain certain manufacturer warranties. If you want to reduce heating bills, keeping your boiler in good working order is a sensible starting point. ## **When Efficiency Problems May Need A Repair** Not every efficiency problem can be resolved through thermostat adjustments. Seek professional advice if you notice: - Radiators heating unevenly - Repeated pressure loss - Unusual boiler noises - Heating taking much longer than before - Regular fault codes - Frequent breakdowns These symptoms can have several causes. An engineer can identify whether the problem lies with the boiler or elsewhere in the heating system. ## **When Replacement Could Make More Sense** Sometimes improving an older boiler is no longer the most cost-effective option. An older non-condensing boiler, repeated repairs, increasing unreliability or difficulty obtaining parts may justify considering [replacement](https://www.argcontracts.co.uk/boiler-installation). However, not every older boiler needs replacing. The decision should consider its condition, age, repair costs, reliability and performance. An honest assessment can help you avoid spending thousands on an unnecessary replacement. ## **Improving Efficiency Starts With The Whole System** Learning [how to improve boiler efficiency](https://www.argcontracts.co.uk/boiler-servicing) involves making sure the boiler, radiators and controls work together effectively without wasting energy. Using controls sensibly, maintaining correct pressure and following practical energy saving heating tips can help. Maintenance and timely repairs may also help you reduce heating bills by preventing unnecessary energy use. If you are unsure whether your boiler needs servicing, repair or replacement, ARG Contracts can assess your system and explain the options. Concerned that your boiler is using more energy than it should?[Contact ARG Contracts](https://www.argcontracts.co.uk/get-in-touch?hsCtaAttrib=435925363941) for straightforward advice on servicing, repairs, or whether a replacement is worth considering. 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