{"version":"1.0","provider_name":"Rapidheat Blog","provider_url":"https:\/\/www.rapidheat247.co.uk\/blog","author_name":"Rapidheat247 Team","author_url":"https:\/\/www.rapidheat247.co.uk\/blog\/author\/admin\/","title":"Most Energy Efficient Boilers in London, UK 2025 - Rapidheat Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"72xR3hB3J8\"><a href=\"https:\/\/www.rapidheat247.co.uk\/blog\/most-energy-efficient-boilers-in-london-uk\/\">Most Energy Efficient Boilers in London, UK 2025<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.rapidheat247.co.uk\/blog\/most-energy-efficient-boilers-in-london-uk\/embed\/#?secret=72xR3hB3J8\" width=\"600\" height=\"338\" title=\"&#8220;Most Energy Efficient Boilers in London, UK 2025&#8221; &#8212; Rapidheat Blog\" data-secret=\"72xR3hB3J8\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.rapidheat247.co.uk\/blog\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.rapidheat247.co.uk\/blog\/wp-content\/uploads\/2025\/02\/energy-efficiency-img145.jpg","thumbnail_width":1920,"thumbnail_height":1080,"description":"When choosing a boiler for your home in London, energy efficiency is a key factor. A highly efficient boiler can help you save on energy bills and reduce your carbon footprint. In this guide, we will explain the different energy efficiency ratings for boilers and highlight the best energy-efficient boilers available in the UK. Understanding [&hellip;]"}