{"id":1881,"date":"2026-03-19T12:37:50","date_gmt":"2026-03-19T12:37:50","guid":{"rendered":"https:\/\/www.rapidheat247.co.uk\/blog\/?p=1881"},"modified":"2026-03-19T12:37:55","modified_gmt":"2026-03-19T12:37:55","slug":"before-installing-air-source-heat-pump-london-guide","status":"publish","type":"post","link":"https:\/\/www.rapidheat247.co.uk\/blog\/before-installing-air-source-heat-pump-london-guide\/","title":{"rendered":"Before You Install an Air Source Heat Pump, Read This First\u00a0"},"content":{"rendered":"\n<p>If you are considering an&nbsp;<a href=\"https:\/\/www.rapidheat247.co.uk\/blog\/air-source-heat-pump-installation\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Air Source Heat Pump Installation in London<\/strong>,<\/a>&nbsp;the decision should not start with the unit or the price.&nbsp;It should start with understanding whether your property, your heating habits, and your expectations actually match how a heat pump performs in real London conditions.&nbsp;<\/p>\n\n\n\n<p>This guide focuses only on what truly&nbsp;impacts&nbsp;performance, comfort, and&nbsp;long-term&nbsp;value based on UK government guidance, building standards, and&nbsp;real-world&nbsp;installation outcomes.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>The One Thing Most Homeowners Miss: Heat Loss Defines Everything<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Before any installation, a&nbsp;<strong>room-by-room&nbsp;heat loss calculation<\/strong>&nbsp;is essential. This is not optional or technical&nbsp;overkill; it&nbsp;is the foundation of a successful system.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why it matters:<\/strong>&nbsp;<\/h3>\n\n\n\n<p>Heat pumps are sized based on how much heat your home loses, not how big your house is.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What affects heat loss:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wall type (solid vs cavity in many London homes)\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Insulation levels (loft, walls, floors)\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Window type and air leakage\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ceiling height (common in period properties)\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What goes wrong without it:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Undersized system \u2192 rooms never reach comfort temperature\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oversized system \u2192 inefficient cycling and higher bills\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Expert Insight:<\/strong>&nbsp;UK standards such as MIS 3005 require proper heat loss calculations for compliant installations. If this step is skipped or rushed, the entire system design becomes unreliable.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Flow Temperature Is the Real Performance Indicator Not the Brand<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Most people compare brands. Professionals focus on&nbsp;<strong>flow&nbsp;temperature<\/strong>.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What is&nbsp;flow&nbsp;temperature?<\/strong>&nbsp;<\/h3>\n\n\n\n<p>It is the temperature at which hot water is delivered to your radiators or underfloor system.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why it matters:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Heat pumps are most efficient at\u00a0<strong>lower flow temperatures (35\u00b0C to 50\u00b0C)<\/strong>\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Traditional radiators were designed for\u00a0<strong>70\u00b0C to 80\u00b0C boilers<\/strong>\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What this means for your home:<\/strong>&nbsp;<\/h3>\n\n\n\n<p>If your home needs&nbsp;high temperatures&nbsp;to stay warm, a heat pump will:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lose efficiency\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increase electricity usage\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Deliver weaker performance\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Key Takeaway:<\/strong>&nbsp;A successful&nbsp;<a href=\"https:\/\/www.rapidheat247.co.uk\/blog\/air-source-heat-pump-installation\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Air Source Heat Pump Installation in London<\/strong><\/a>&nbsp;is one where the home can be heated effectively at lower temperatures.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Emitter Design: The Most Underrated Part of Installation<\/strong>&nbsp;<\/h3>\n\n\n\n<p>\u201cWill my radiators work?\u201d&nbsp;is&nbsp;the wrong question.&nbsp;<\/p>\n\n\n\n<p>The right question is:&nbsp;<strong>Can your emitters deliver enough heat at lower temperatures?<\/strong>&nbsp;<\/p>\n\n\n\n<p><strong>In practice:<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Many London homes require\u00a0<strong>larger radiators or double panel upgrades<\/strong>\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Some may\u00a0benefit\u00a0from\u00a0<strong>low temperature radiators or underfloor heating<\/strong>\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What professionals calculate:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Output required per room\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Radiator performance at reduced temperatures\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Expert Insight:<\/strong>&nbsp;This is where many installations fail not because of the heat pump, but because the heat delivery system was never redesigned.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Electrical Capacity: A Hidden Constraint in London Homes<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Unlike gas boilers, heat pumps rely entirely on electricity.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What needs to be checked:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Existing electrical supply capacity\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Consumer unit condition\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Space for\u00a0additional\u00a0breakers\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>In some cases:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Upgrades from the Distribution Network Operator (DNO) may be\u00a0required\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Older properties may need electrical improvements\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Key Takeaway:<\/strong>&nbsp;Ignoring electrical readiness can delay or complicate your installation.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Defrost Cycles and Winter Performance in London<\/strong>&nbsp;<\/h2>\n\n\n\n<p>London winters are moderate, but&nbsp;the humidity&nbsp;is&nbsp;relatively high. This directly affects heat pump&nbsp;behavior.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What happens in winter:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Moisture in the air freezes on the outdoor unit\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The system enters a\u00a0<strong>defrost cycle<\/strong>\u00a0to\u00a0maintain\u00a0performance\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What you should know:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temporary drop in heating output is normal\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Proper system sizing accounts for this\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poor installations struggle during these cycles\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Expert Insight:<\/strong>&nbsp;Government backed performance data shows that well designed systems&nbsp;maintain&nbsp;efficiency even in UK winter conditions but only when correctly specified.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Noise Compliance Is a Technical Calculation Not Guesswork<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Noise is not just about \u201cquiet models.\u201d It is regulated under UK planning rules.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Installers must consider:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sound power level (from manufacturer data)\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Distance to\u00a0neighbouring\u00a0windows\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reflection from walls and surfaces\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why this matters in London:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Properties are close together\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Failing noise limits can lead to planning issues\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Key Takeaway:<\/strong>&nbsp;Proper acoustic assessment is part of professional&nbsp;<strong>Air Source Heat Pump Services<\/strong>, not an optional extra.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Running Costs: The Role of SCOP, Not Just Electricity Prices<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Instead of asking \u201chow much will it cost to run,\u201d focus on&nbsp;<strong>SCOP (Seasonal Coefficient of Performance).<\/strong>&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What SCOP means:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It measures how efficiently the system performs over a year\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Example: SCOP of 3 = 1 unit of electricity produces 3 units of heat\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What affects SCOP:<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Flow temperature\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Insulation quality\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>System design\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Installation quality\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Expert Insight:<\/strong>&nbsp;UK field data shows that poorly designed systems can drop below expected efficiency, even if the equipment itself is high quality.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Government Support: What Actually Matters<\/strong>&nbsp;<\/h2>\n\n\n\n<p>The UK government supports low carbon heating through the&nbsp;<strong>Boiler Upgrade Scheme (BUS)<\/strong>.&nbsp;<\/p>\n\n\n\n<p><strong>Key points:<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Grants are available for eligible properties in England\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Installation must be carried out by MCS certified installers\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>System design must meet strict standards\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49&nbsp;<strong>Important:<\/strong>&nbsp;The grant supports installation, but it does not guarantee performance. Design quality still&nbsp;determines&nbsp;results.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>A&nbsp;Real World&nbsp;Checklist Before You Proceed<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Use this before committing to any&nbsp;<strong>Air Source Heat Pump Installation in London<\/strong>:&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Property Readiness<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Adequate insulation in loft and walls\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Minimal draughts and air leakage\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>System Design<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Full room by room heat loss calculation\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Radiator or emitter assessment completed\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Technical Checks<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Electrical capacity reviewed\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Outdoor unit placement planned\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Installer Quality<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 MCS certification confirmed\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2714 Detailed design proposal provided\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Final Thoughts: The System Is Only as Good as the Design<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Air source heat pumps are not plug and play replacements for boilers. They are&nbsp;<strong>designed systems<\/strong>&nbsp;that depend on how well your home, heating distribution, and usage patterns align.&nbsp;<\/p>\n\n\n\n<p>When installed correctly, based on UK standards and proper calculations, they can deliver:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stable indoor comfort\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Predictable energy performance\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lower carbon impact\u00a0<\/li>\n<\/ul>\n\n\n\n<p>But when rushed or poorly specified, the same system can underperform.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Need a Proper Assessment for Your London Property?<\/strong>&nbsp;<\/h2>\n\n\n\n<p>If you are at the decision stage and want clarity before committing, it is always better to evaluate your home properly first.&nbsp;<\/p>\n\n\n\n<p>For practical guidance on&nbsp;<a href=\"https:\/\/www.rapidheat247.co.uk\/blog\/air-source-heat-pump-installation\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Air Source Heat Pump Services<\/strong><\/a>&nbsp;and real assessments:&nbsp;<\/p>\n\n\n\n<p>\ud83d\udcde 07888078885&nbsp;<br>\ud83c\udf10&nbsp;<a href=\"http:\/\/www.rapidheat247.co.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\">www.rapidheat247.co.uk<\/a>&nbsp;<\/p>\n\n\n\n<p>Getting the design right at the beginning is what&nbsp;determines&nbsp;whether your system performs well for years or becomes a costly compromise.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>FAQS:<\/strong>\u00a0<\/h2>\n\n\n\n<p>\u00a0<strong>1. How can I quickly tell if my home is\u00a0heat\u00a0pump ready?<\/strong>\u00a0<\/p>\n\n\n\n<p>If your home stays warm without needing&nbsp;very hot&nbsp;radiators, it is a good sign. If rooms cool down quickly, insulation improvements may be needed first.&nbsp;<\/p>\n\n\n\n<p><strong>2. Why do some heat pumps&nbsp;fail to&nbsp;heat homes properly?<\/strong>&nbsp;<\/p>\n\n\n\n<p>Most issues come from poor&nbsp;design&nbsp;not the system. Common causes are wrong sizing, no heat loss calculation, or using small radiators with low temperature heating.&nbsp;<\/p>\n\n\n\n<p><strong>3. Will&nbsp;I feel a difference&nbsp;compared to my current boiler?<\/strong>&nbsp;<\/p>\n\n\n\n<p>Yes. Heat pumps give steady warmth over time instead of quick bursts of heat. Rooms stay consistent rather than heating up and cooling down.&nbsp;<\/p>\n\n\n\n<p><strong>4. Can I keep my existing radiators without upgrades?<\/strong>&nbsp;<\/p>\n\n\n\n<p>Only if they can deliver enough heat at lower temperatures. Many London homes need at least partial radiator upgrades for proper performance.&nbsp;<\/p>\n\n\n\n<p><strong>5. What makes running costs go up unexpectedly?<\/strong>&nbsp;<\/p>\n\n\n\n<p>Higher costs usually happen when:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The system runs at\u00a0high temperatures\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Insulation is poor\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The system is incorrectly sized\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>6. Where is the biggest installation mistake homeowners make?<\/strong>&nbsp;<\/p>\n\n\n\n<p>Rushing into installation without a full home assessment. Skipping design checks often&nbsp;leads&nbsp;to comfort and efficiency problems later.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you are considering an&nbsp;Air Source Heat Pump Installation in London,&nbsp;the decision should not start with the unit or the price.&nbsp;It should start with understanding whether your property, your heating habits, and your expectations actually match how a heat pump performs in real London conditions.&nbsp; This guide focuses only on what truly&nbsp;impacts&nbsp;performance, comfort, and&nbsp;long-term&nbsp;value based [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1882,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1881","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Before You Install an Air Source Heat Pump, Read This First\u00a0 - Rapidheat Blog<\/title>\n<meta name=\"description\" content=\"Planning an Air Source Heat Pump Installation in London? Learn what most homeowners miss from heat loss and radiator sizing to real running costs before you install. Avoid costly mistakes with this expert guide.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rapidheat247.co.uk\/blog\/before-installing-air-source-heat-pump-london-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Before You Install an Air Source Heat Pump, Read This First\u00a0 - Rapidheat Blog\" \/>\n<meta property=\"og:description\" content=\"Planning an Air Source Heat Pump Installation in London? Learn what most homeowners miss from heat loss and radiator sizing to real running costs before you install. 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