--- title: "What Is an Octopus Cosy Accredited Installer? | Greentech" description: "Cosy accreditation explained: how Octopus Energy vets installers of the Cosy 6/9/15.5kW heat pump, and why it matters for BUS grants, warranty and Cosy Octopus tariff set-up." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "LocalBusiness", "name": "Greentech Renewables", "image": "https://www.greentechrenewables.co.uk/logo.png", "description": "MCS Certified Solar Panel and Battery Storage Installers in Greater Manchester. Trusted by 2000+ UK homeowners for renewable energy solutions.", "address": { "@type": "PostalAddress", "addressLocality": "Greater Manchester", "addressCountry": "GB" }, "telephone": "0333 577 7010", "email": "admin@greentechrenewables.co.uk", "url": "https://www.greentechrenewables.co.uk", "priceRange": "££", "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.9", "reviewCount": "105" }, "sameAs": [ "https://www.facebook.com/greentechrenewables", "https://www.instagram.com/greentechrenewables" ], "hasOfferCatalog": { "@type": "OfferCatalog", "name": "Renewable Energy Services", "itemListElement": [ { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Solar Panel Installation" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Battery Storage Systems" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Air Source Heat Pumps" } } ] } }, { "@context": "https://schema.org", "@graph": [ { "@type": "Article", "headline": "What Is an Octopus Cosy Accredited Installer?", "datePublished": "2026-07-21", "dateModified": "2026-07-21", "author": { "@type": "Organization", "name": "Greentech Renewables" }, "mainEntityOfPage": "https://www.greentechrenewables.co.uk/heat-pumps/what-is-a-cosy-accredited-installer" }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is an Octopus Cosy Accredited Installer?", "acceptedAnswer": { "@type": "Answer", "text": "A heating engineer vetted and authorised by Octopus Energy to design, install and commission the Cosy heat pump range (6, 9 and 15.5kW) to Octopus's own installation standard — on top of MCS certification." } }, { "@type": "Question", "name": "How is Cosy accreditation different from MCS certification?", "acceptedAnswer": { "@type": "Answer", "text": "MCS is the UK's baseline installer certification and is legally required to unlock the Boiler Upgrade Scheme grant. Cosy accreditation is an additional, brand-specific standard from Octopus Energy covering design decisions, commissioning quality, and post-installation handover for the Cosy range." } }, { "@type": "Question", "name": "Is Greentech Renewables a Cosy Accredited Installer?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Greentech Renewables has been an Octopus Cosy Accredited Installer since 2026 and has completed over 1,000 Cosy installations across Greater Manchester and the North West." } }, { "@type": "Question", "name": "Do I have to use a Cosy Accredited Installer to buy a Cosy heat pump?", "acceptedAnswer": { "@type": "Answer", "text": "In practice yes — the Cosy range is only fitted by installers authorised by Octopus. You can either book direct via Octopus's team or work with a local accredited installer such as Greentech Renewables, which lets you keep the BUS grant, warranty and Cosy Octopus tariff benefits with a local point of contact." } }, { "@type": "Question", "name": "How do I verify an installer is Cosy accredited?", "acceptedAnswer": { "@type": "Answer", "text": "Ask the installer directly for their Octopus accreditation and cross-check that they hold MCS certification via the MCS installer database. Greentech Renewables displays both credentials and can provide accreditation reference details on request." } }, { "@type": "Question", "name": "Does the Cosy accreditation cover servicing and warranty?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. A Cosy Accredited Installer commissions the unit under warranty and handles first-year service and warranty claims direct with Octopus, so you don't lose warranty cover by using a local installer." } } ] } ] } ] --- [0333 577 7010 ](tel:03335777010)[admin@greentechrenewables.co.uk ](mailto:admin@greentechrenewables.co.uk) ★ 4.9 on Trustpilot [![Greentech Renewables - MCS Certified Solar Installers](/assets/greentech-logo-DICMm454.jpg)](/) [Home](/) Our Services Solar Energy [ Residential Solar Home solar panel systems ](/solar-panels)[ Commercial Solar Business & industrial solutions ](/commercial-solar)[ Price Estimator Get an instant quote ](/solar-estimator) Energy Storage [ Battery Storage Store excess solar energy ](/battery-storage) Heat Pumps [ Air Source Heat Pumps Efficient home heating ](/heat-pumps)[ Octopus Cosy Installer Accredited Cosy fitting in Manchester ](/octopus-cosy-heat-pump-installer-manchester)[ Boiler Upgrade Scheme £7,500–£9,000 government grant ](/boiler-upgrade-scheme-bus) EV Charging [ Home EV Chargers Charge at home ](/ev-charging)[ Commercial Charging Workplace solutions ](/ev-charging#commercial) Ready to switch to renewable energy? 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You may get free panels [Check Eligibility](/grants/warm-homes-plan-eligibility) [Case Studies](/case-studies) [0% Finance](/finance)[Quick Solar Price](/solar-estimator) Heat Pumps · Octopus Cosy # What Is an Octopus Cosy Accredited Installer? A plain-English explainer of the Octopus accreditation that sits on top of MCS — what it means, who has it in Greater Manchester, and why it matters for your install. ## The short version An Octopus Cosy Accredited Installer is a heating engineer authorised by Octopus Energy to design, install and commission the Cosy heat pump range to Octopus's own installation standard. It's a small national pool of installers — most concentrated in Scotland and the South — and Greentech Renewables is one of the few active accredited partners covering Greater Manchester and the North West. ## What the accreditation actually requires - Active MCS certification for air source heat pumps - HIES or equivalent Consumer Code membership - Engineers trained by Octopus on the Cosy range and refrigerant handling (R290) - Documented commissioning standard, including flow temperature set-up, weather compensation, and Cosy Pod integration - Warranty and first-year service commitment with Octopus ## Why it matters vs "any" heat pump installer The Cosy range uses natural refrigerant R290 and pairs with the Cosy Octopus tariff and Cosy Pods (wireless room sensors). Getting the best out of it depends on how it's commissioned — the flow temperature, weather compensation curve and hot water schedule. A Cosy Accredited Installer commissions to Octopus's own spec, which protects both the warranty and your day-one running cost. ## Local Cosy Accredited Installer: Greentech Renewables Greentech Renewables has held Octopus Cosy accreditation since 2026 and completed over 1,000 Cosy installations across Manchester, Salford, Stockport, Bury, Bolton, Oldham, Rochdale, Trafford, Tameside and Wigan. We handle the full journey — survey, [BUS grant application](/boiler-upgrade-scheme-bus), installation, and Cosy Octopus tariff hand-off. ## Frequently Asked Questions ### What is an Octopus Cosy Accredited Installer? A heating engineer vetted and authorised by Octopus Energy to design, install and commission the Cosy heat pump range (6, 9 and 15.5kW) to Octopus's own installation standard — on top of MCS certification. ### How is Cosy accreditation different from MCS certification? MCS is the UK's baseline installer certification and is legally required to unlock the Boiler Upgrade Scheme grant. Cosy accreditation is an additional, brand-specific standard from Octopus Energy covering design decisions, commissioning quality, and post-installation handover for the Cosy range. ### Is Greentech Renewables a Cosy Accredited Installer? Yes. Greentech Renewables has been an Octopus Cosy Accredited Installer since 2026 and has completed over 1,000 Cosy installations across Greater Manchester and the North West. ### Do I have to use a Cosy Accredited Installer to buy a Cosy heat pump? In practice yes — the Cosy range is only fitted by installers authorised by Octopus. You can either book direct via Octopus's team or work with a local accredited installer such as Greentech Renewables, which lets you keep the BUS grant, warranty and Cosy Octopus tariff benefits with a local point of contact. ### How do I verify an installer is Cosy accredited? Ask the installer directly for their Octopus accreditation and cross-check that they hold MCS certification via the MCS installer database. Greentech Renewables displays both credentials and can provide accreditation reference details on request. ### Does the Cosy accreditation cover servicing and warranty? Yes. A Cosy Accredited Installer commissions the unit under warranty and handles first-year service and warranty claims direct with Octopus, so you don't lose warranty cover by using a local installer. ## Book a Free Cosy Survey with an Accredited Installer Greentech Renewables — Octopus Cosy Accredited since 2026 — will size, price and grant-fund your install. [Book Free Survey](/free-quote) [0333 577 7010](tel:03335777010) See also: [Octopus Cosy Accredited Installer Manchester](/octopus-cosy-heat-pump-installer-manchester) ## Accreditations ![Our Accreditations: HIES Consumer Code, TSI Approved Code, TrustMark Government Endorsed Quality, Green Deal Approved, MCS Certified, NAPIT](/assets/solar-accreditations-CbjEg9cO.png) Public Liability Insurance – Tradesman Saver £5,000,000 – GREE55TR01 Employers Liability Insurance – Tradesman Saver £10,000,000 – GREE55TR01 Professional Indemnity – Tradesman Saver £250,000 – GREE55TR01 [![Greentech Renewables - MCS Certified Solar Installers](/assets/greentech-logo-DICMm454.jpg)](/) MCS Certified solar panel and battery storage installers serving Greater Manchester and the UK. Trusted by 2000+ homeowners. 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