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      • OFT10-600A/OFT10-105E: Oil Appliance Installation and Oil Storage & Supply Installation
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      • Grant Uflex Underfloor Heating
      • Grant Vortex Condensing Boilers
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      • Grant Aerona³ Air Source Heat Pumps (ASHP)
      • Grant Solar Thermal Systems
      • OFT10-600A/OFT10-105E/OFT10-101: Oil Appliance Installation, Oil Storage and Supply Installation, and Pressure Jet Servicing and Commissioning
      • OFT10-101: Oil Pressure Jet Servicing and Commissioning
      • Pressure Jet Oil Burners
      • OFT10-600A: Oil Storage and Supply Installation
      • LCL Awards Level 3 Award in Low Temperature Heating & Hot Water Systems in Dwellings
      • LCL Awards Level 3 Award in the Installation and Maintenance of Air Source Heat Pumps Systems (Non-refrigerant Circuits)
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      • Howard Porter of Polgate Ltd, Wiltshire
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  • Oil Boilers
    • Vortex Blue: Internal
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    • EZ-Fit Internal Low Level Balanced Flues (Yellow System)
    • EZ-Fit Internal Vertical Balanced Flues (White System)
    • EZ-Fit Internal High Level Balanced Flues (White System)
    • EZ-Fit External High Level / Vertical Flues (Green System) for internal boilers
    • EZ-Fit Flexible Vertical Balanced Flues (Red System)
    • EZ-Fit Vertical conventional flues (Orange System)
    • EZ-Fit External Flues (Green System) for outdoor boilers
  • Air Source Heat Pumps
    • Grant Aerona³ R32 Air Source Heat Pump Range
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    • Grant VortexAir Range
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  • Underfloor Heating
    • Uflex Underfloor Heating
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    • Grant Quick Recovery Cylinders
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  • Solar Thermal
    • Grant Solar Collectors
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  • Accessories
    • Grant Vortex Mag One Magnetic Filter
    • Grant GES264 sequence controller
    • Grant Low-loss Headers
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    • Grant GEO360 Weather Compensator
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  • News
    • Grant UK expands HQ site with new warehouse, meeting suites and showroom
    • Grant UK increases offering to installers through revamped incentive scheme
    • Grant UK donates £2,000 to local children’s charity
    • Grant Aerona³ awarded Highly Commended at National ACR and Heat Pump Awards
    • Grant UK appoints Renewables Manager
    • Grant UK expands its training offering in Hawes, North Yorkshire
    • 25 days of Grantmas!
    • Grant UK now offer air source heat pump packs
    • Grant UK to stock KBB Fire Valves
    • Grant UK’s G-CERT Scheme – an installer’s perspective
    • Which off-gas heating option to choose?
    • 63 oil boilers. 63 Which? Best Buys
    • Grant UK continues to raise money for Julia’s House
    • Domestic RHI Tariff Uplifts
    • Grant UK introduces Kevin Ellis to the Sales Team
    • Grant UK supports Bath Rugby for a third season
    • Grant UK adds new models to its Vortex Boiler House range
    • Grant releases timeline video of Company’s history
    • Grant makes successful debut at ISH
    • Grant VortexAir Hybrid is a finalist in the H&V News Awards 2017
    • Changes to Domestic RHI Scheme in Spring/Summer 2017
    • Valentine’s Bake Sale in aid of Julia’s House
    • 10 year guarantee on Grant VortexBlue oil boiler range is here to stay!
    • Grant UK raises £500 for local charity in December
    • Grant TechBox – December 2016 update
    • Competition winner joins Grant UK to cheer on Bath Rugby!
    • Enjoy the best of both worlds with your home heating
    • Grant UK is going more social!
    • Grant Engineering will be exhibiting at ISH 2017
    • Grant UK proudly supports local children’s charity, Julia’s House
    • Energy & Climate Change Committee now incorporated in Business, Energy & Industrial Strategy Committee
    • Another award for Grant UK!
    • Grant VortexBlue takes home gold!
    • Grant Vortex oil boilers are the No.1 choice in the UK
    • Grant takes to the track for British Rally competitions
    • Grant UK turns up the heat for another season with Bath Rugby
    • Grant UK extends black external fittings throughout EZ-Fit Flue System range
    • Grant UK takes home heating to new heights at Bristol Balloon Fiesta!
    • Grant UK celebrates 20 years of trading
    • Grant UK Installer Evenings spread the word with engineers
    • Grant introduces new ErP A-rated heat pump cylinder
    • Grant EZ-Fit Flues now available in black
    • Merchants to go head to head in charity football match
    • Grant UK launches the VortexAir: a unique oil and heat pump hybrid
    • Grant UK makes donation to help eight year old Lucy enjoy the freedom of movement
    • Flue flashing from Grant – designed with installers in mind
    • Grant UK G-One accredited installer announced as Installer of the Year 2015
    • Grant announces industry leading 10 Year Warranty on VortexBlue oil boiler range
    • Changes to the RHI Scheme: Spring 2016
    • Grant UK launches small and highly efficient Aerona³ heat pump
    • Grant UK supports charity ball for Motor Neurone Disease
    • Grant UK releases series of videos on new blue flame burner
    • Grant Engineering announces creation of 50 new jobs in Co Offaly
    • The next generation of off-gas heating: Grant UK to host series of technical evenings
    • Government led consultation on changes to reduced VAT rates for energy saving materials
    • Grant UK Training Academy: 2015 in review
    • London Boiler Cashback Scheme announced
    • Grant UK introduces even cleaner ‘Blue Flame’ technology to its Vortex range
    • Grant UK prepares for 20th Anniversary celebrations
    • New fleet of Grant UK engineer vans now on the road!
    • Grant UK and Williams & Co Ltd send one lucky installer to Las Vegas!
    • Grant UK supports Christmas raffle raising funds for cause close to G-One installer’s heart
    • It’s all in the size of the vessel
    • When tradition should give way to the latest biomass technology
    • Grant UK releases series of video case studies for biomass heating
    • Breakfast Morning dates – November 2015
    • Grant 2015 Roadshow – November dates
    • Grant leads the way with wall hung oil-fired boilers
    • Breakfast morning dates in October
    • Grant UK scoops two major awards at the Heating and Renewables Awards
    • Grant 2015 Roadshow – October dates
    • Grant Training Academy gets a makeover
    • Grant UK signs as official Business Partner for Bath Rugby
    • Grant UK supporting the Heating & Renewables Roadshow 2015!
    • Green Deal Home Improvement Fund to end
    • Grant UK supports DIY SOS: The Big Build
    • Renewable technologies industry calls for clarity regarding EU ruling on reduced VAT
    • Small space? Big deal! Grant UK launches the Vortex Pro Combi XS
    • Renewables make sense, even without government subsidy
    • Grant Solar Thermal technologies work in diffused sunlight too
    • Popular Vortex range welcomes six new boiler models
    • Championship Golf at Bowood tests Grant Sales Representatives, merchants & installers!
    • Solar. Hot water you will want to get into
    • Making the case for biomass
    • Air we go…
    • Grant UK supports local Youth Football Tournament
    • Grant UK exhibiting at Eco Technology Show (Stand W35)
    • G-One installer named Fastest Growth Company 2015
    • The importance of fitting Carbon Monoxide alarms with solid fuel, oil, and gas heating systems
    • Grant Biomass Forum is Now Live!
    • Grant UK exhibiting at Eco Technology Show (Stand W35) (1)
    • Grant at Ecobuild 2015
    • Grant UK happy to help DIY SOS: The Big Build
    • Biomass boilers: an excellent business opportunity for heating engineers
    • Vortex Combi upgrade saves installers time and money
    • New display vans hit the road
    • Grant pellet stores rolling off the production line
    • Grant Biomass & RHI tutorials on YouTube
    • Saving energy with biomass boilers
    • Grant launches latest ThermaWave range
    • New Grant Biomass Forum
    • Proposed changes to biomass fuel purchase in 2015
    • Vortex Mag-One Magnetic Filter launch
    • Grant wins prestigious OFTEC excellence award
    • Grant UK 2014 golf day proves a hit
    • Genius Energy offers Grant Biomass as part of the RHI
    • Exhibiting at Brighton’s Eco Technology Show
    • Additional funding & product preview – Minister Greg Barker visits Grant
    • Grant Surprise at Ecobuild
    • Condensing Wood Pellet Boilers approved for Domestic RHI
    • Grant Goes Greener
    • Training Academy sees record numbers
    • Heat Pump Sizing All Figured Out
    • Grants Growing Service Support
    • Pumps not phased by power
    • Hot water you will want to get into
    • No depression in boiler market
    • EZ-Fit flues CE ready for new regs
    • Clever Solar Solutions from Grant
    • New energy management controls unveiled at Ecobuild
    • Grant to launch new heat pump at Ecobuild 2013
    • Grant SpiraVAC to be launched at Ecobuild 2013
    • Grant Spares now featured online
    • Green deal cash-back announced for oil condensing boilers
    • DEFRA approves Grant Spira under Clean Air Act
    • Grant invests in larger external Service Support Team
    • OFTEC presents Grant with three prestigious Awards for Excellence
    • Grant shows innovation with Spira range
    • Grant Vortex hits 10th year in production
    • Grant Spira Wood Pellet Range now MCS approved
    • Become a G-One Accredited Installer
    • Vortex boiler house and larger outdoor modules launched
    • Grant website is now carbon neutral
    • Grant products showcased at biggest Ecobuild yet
    • Grant Spira pellet boiler wins SEAI award
    • Scottish Government announce further boiler scrappage funding
    • See Grant at Ecobuild 2011
    • New Grant Accredited Heat Pump Installer Scheme
    • A new era for Grant Wave Cylinders
    • Grant launches YouTube Channel
    • Success for Grant at 2010 OFTEC Awards
    • New Solar Support Kit for Installers
    • Observing a Grant Aerona³ heat pump installation, step by step
    • Aerona³ heat pump meets heating needs for new build family home in Carmarthenshire
    • New Vortex Boiler Houses welcome two homes to the red side
    • A combination of Grant renewable technologies keep new build home warm in Cardigan
    • Martin Roberts warms up with a Grant VortexBlue
    • Living with a Grant Vecta biomass boiler
    • Ayrshire home joins the hybrid revolution with new Grant VortexAir!
    • Grant Vecta biomass boiler is helping a 1930s property reduce its carbon footprint
    • Out with the old and in with the Blue!
    • 19th century cottage now being heated by a Vortex Pro boiler
    • Out with the old and in with a new Grant Vortex
    • Colchester United has gone to the green side with a 72kW Spira
    • Grant Vortex Eco Utility boiler now warming up a Wiltshire farmhouse
    • The first Vortex Pro Combi XS makes itself at home in Gloucester
    • Clean and Efficient - Spira gets the thumbs up in Hampshire
    • Grant biomass boilers earning their keep for homeowners
    • Spira biomass boiler takes residence at Steadings Park in Suffolk
    • Grant biomass boilers are keeping installers busy
    • It is easy being green with a Grant biomass boiler
    • Property developer chooses Grant Biomass for new build
    • Townsends take up renewables
    • Dual fuel is twice as good
    • Waveney District Council benefits with Grant Solar
    • East Green Energy lead the way with Grant Spira
    • Grant Spira biomass boiler cuts fuel bills
    • Grant Solar tops prestigious Ochre Yards development
    • Grant Aerona heat pumps aleviate fuel poverty for tenants in Western Isles
    • Vortex installation secures OFTEC Installer of the Year award for WD Taylor
    • Installer promotes advantages of renewable heating
    • Grant Renewables provide solution for Grade II building
    • Local Authority upgrades sheltered housing with Grant
    • Grant renewables installed in hostel for homeless
    • Primary school cuts costs with Vortex boiler house
    • Green heating for 18th century estate
    • Green living for States of Guernsey Housing
    • Grant oil boilers comply with low NOx legislation
    • New low NOx legislation coming into force in September 2018
    • Grant UK expands hot water cylinder range
    • A step by step installation of a VortexBlue by G1 installers RSK
    • Grant UK unveils brand new website
    • A home in the Scottish Borders welcomes Grant Aerona³ heat pump
    • Grant SpiraPod makes green home heating easy
    • Claire Perry MP officially opens Grant UK’s new Showroom and Meeting Suites
    • Every G1 Installer can be a winner with Grant UK’s biggest ever promotion!
    • Grant UK welcomes new Area Sales Manager and Trainees to the team
    • Air Source Heat Pump metering requirements for Domestic RHI Scheme
    • New models introduced to the Grant Aerona³ R32 heat pump range
    • Which? Best Buy Vortex Eco 15/21kW External boiler installed at 1930s home in East Sussex
    • Grant UK unveils new product line
    • Grant UK extends Business Partnership with Bath Rugby Club for another season
    • Grant UK donates Vortex boiler to Jamie’s Farm in Monmouth
    • Grant oil boilers win Which? Best Buys for second year running
    • Grant Engineering launches new Group website
    • Grant UK’s ‘Big G1 Giveaway’ – 2 months down, 4 months to go!
    • A developer’s perspective on the Aerona³ heat pump
    • Grant Vortex Oil Boiler and Wave Cylinder improve heating system for Sunflowers at Grafton childcare charity
    • Two Vortex Pro Utility boilers are keeping a converted farmhouse in Buckinghamshire warm and cosy
    • Grant UK’s new website & latest heat pump nominated at ACR News Awards
    • Grant UK’s latest heat pump nominated at National ACR & Heat Pump Awards
    • VortexAir Hybrid exceeds expectations at family home in Hampshire
    • Grant Engineering returns to ISH 2019
    • Grant UK donates £3,000 to Julia’s House
    • Wiltshire Air Ambulance announced as Grant UK’s chosen charity for 2019
    • Grant UK’s ‘Big G1 Giveaway’ lives up to expectations!
    • Grant UK extends product portfolio to include underfloor heating
    • Grant UK announces the passing of Christine Wakefield
    • Grant Engineering enjoys another successful ISH exhibition
    • Find Grant UK on stand D150 at Installer2019
    • Grant UK welcomes new Sales Manager to the South East
    • Underfloor Heating product training now available from Grant UK
    • Grant UK launches Package Solutions Roadshow
    • Grant TechBox app is now better than ever before!
    • Quiet Mark awarded to Grant Aerona³ R32 13kW and 17kW heat pumps
    • Grant UK expands Sales Team to increase National Sales Coverage
    • Introducing the Afinia Aluminium Radiators from Grant UK
    • Grant UK’s Big G1 Giveaway is back!
    • Join Grant UK at InstallerSCOTLAND this September
    • Grant UK continues long-term partnership with Bath Rugby
    • Grant Training available at HLI Centre, Livingston this heating season
    • Multi-zone Uflex underfloor heating system installed in Yorkshire barn conversion
    • Grant is the only oil boiler manufacturer to achieve Which? Best Buys for three years running
    • Halfway through Grant UK’s ‘Big G1 Giveaway’!
    • Brand new 64-page Renewable Technologies Brochure unveiled by Grant UK
    • Grant Aerona³ Heat Pumps are Finalists at National ACR & Heat Pump Awards 2020
    • Grant UK appoints two Renewable Business Development Managers
    • A Grant VortexBlue proves to be the ideal boiler replacement for a property in Berkshire
    • Grant launches new installation packs for Aerona³ heat pumps
    • Grant Aerona³ heat pump replaces old oil boiler to help a home in Lanark go green
    • Grant UK presents Wiltshire Air Ambulance with £10,000 donation
    • Grant Engineering unveils brand new facilities at manufacturing HQ in Co Offaly
    • Grant UK’s 2019 ‘Big G1 Giveaway’ was another BIG success!
    • The journey to Net Zero Carbon: Grant UK outlines its vision for heating systems in 2030
    • Grant UK appoints Stuart McWhinnie as Technical Design Manager
    • 7 year guarantees on Grant heat pumps now available through G1 Installer Scheme
    • Grant UK welcomes new Renewables Business Development Manager
    • Grant UK unveils new features to its Company website
    • Grant Solar Thermal system and thermal store partner up with VortexBlue oil boiler
    • Grant UK hosts webinar with InstallerFESTIVAL 2020
    • Consultation now open for heat pump training course qualification criteria
    • Grant Aerona³ heat pumps feature in NBS National BIM Library
    • Free ASHP set-up assistance available to installers who are trained through Grant UK Training Academy
    • New ‘Knowledge Hub’ launched on Grant UK website
    • Grant UK’s Technical and Customer Service Departments extend their hours including Saturday support
    • Summer essentials backpacks to support installers and engineers available from Grant UK
    • Grant UK welcomes Government’s Green Homes Grant scheme
    • Grant eLearning Academy is unveiled
    • Five star Trustpilot reviews for Grant oil boilers
    • Grant UK sponsors local children’s football team for 20/21 season
    • Renovated farmhouse strives to be carbon neutral with Grant heating system
    • Grant UK launches #ShowUsYourSnood social media competition
    • Grant boilers combine choice, quality and service to be an installer’s favourite oil boiler brand
    • Introducing the Virtual House
    • Grant UK support G1 Installers with digital assets for their social platforms
    • Grant UK unveils new 52 page oil boiler brochure
    • One pair of Grant heat pumps for another pair!
    • End of Year Message from our MD Paul Wakefield
    • Grant UK publishes new heat pump brochure dedicated to homeowners
    • RIBA approved heat pump CPD course now available via Grant eLearning Academy
    • New slimline cylinders launched by Grant UK
    • Grant UK donates £10,000 to Wiltshire Air Ambulance charity
    • From one renewable heating system to another
    • Riello Statement | Danfoss Nozzles Supplied By FIT Services
    • New eLearning support for merchants from Grant UK
    • New heat pump videos now available via Grant UK YouTube channel
    • Afinia vertical radiators meet the brief for spacious loft conversion
    • Grant supply new oil boilers to SWAAT Training Centre
    • Grant oil boilers endorsed by Energy Saving Trust for over fifteen years
    • Grant UK staff take over 12 million steps fundraising for charity
    • Grant Aerona³ R32 heat pump shortlisted for Green Home Awards
    • Grant UK sponsor ‘Heating and Plumbing Merchant of the Year’ at Builders’ Merchants Awards
    • Rishi Sunak visits Grant UK Training Academy
    • Join Grant UK for a live online RIBA CPD Roadshow all about heat pumps
    • Shaun McCarthy joins Grant UK as a Sales Support Engineer
    • New training facility for online courses at Grant UK Training Academy
    • Keeping warm from the floor upwards with Grant underfloor heating
    • Caerphilly Council go green with Aerona³ heat pumps
    • Grant UK release new Aerona³ Heat Pump Handover Guide for homeowners
    • G1 Installer Highly Commended with Grant boiler installation
    • Heating System Installer Survey now open
    • Heat Pump Maintenance Kits from Grant UK
    • Six Aerona³ heat pumps, four flats, two houses, one sustainable development for locals
    • Introducing the Grant QR Cylinder range
    • Grant UK is an Official Partner of Bath Rugby
    • Dunfermline home makes the switch from oil to a heat pump
    • New controls and PEX-AL-PEX pipe join Grant underfloor heating range
    • Grant UK releases heat pump case study video
    • Grant Engineering welcome biofuel breakthrough
    • Grant UK’s response to the Government’s plan to drive down the cost of clean heating
    • Heat pump sound video now available on Grant UK’s YouTube Channel
    • Charles River Associates and Grant UK publish infographic about decarbonising heating
    • Danny Kruger MP visits Grant UK’s Head Office
    • Grant UK sponsors local grassroots mini and junior rugby teams
    • It’s back! Grant UK launches another winter photo sharing social media campaign #SnapThatHat
    • Grant UK achieves Cyber Essentials Plus Certification
    • More rewards join Grant UK’s G1+ Points programme
    • Aerona³ heat pump helps Colchester Football Club go green
    • A look back at 2021 with Paul Wakefield, Grant UK’s MD
    • Changes announced to Part L, F and O of the Building Regulations
    • Grant UK welcomes new Area Sales Manager for East Anglia
    • Grant UK proudly donate £15,000 to Wiltshire Air Ambulance
    • Stuart Thompson joins Grant UK as new Area Sales Manager for Wales & West of England
    • Grant UK extends G1+ rewards programme into renewables
    • Grant UK’s Net Zero Heating Show podcast has landed!
    • VortexAir Hybrid helps village hall become greener
    • Grant UK unveils new online CSR Hub
    • Victorian property upgrades its heating system with VortexAir Hybrid
    • Grant Aerona³ heat pumps are KEYMARK approved
    • Grant UK’s Great Easter Egg Hunt is here!
    • Team Grant takes millions of steps to fundraise!
    • Grant UK achieves carbon neutral operations
    • Grant UK launches VortexBlue cashback promotion
    • Grant UK to streamline Vortex oil boiler range
    • Hard to heat Oxfordshire home welcomes Aerona³ heat pump
    • Join Grant UK on Stand C131 at InstallerSHOW 2022!
    • Grant UK further increases sales coverage support in the field
    • Aerona³ heat pumps take heating to a new level
    • LCL Awards Level 3 Qualification courses available at Grant UK Training Academy
    • Heat Pump CPD training with Grant UK and RIBA
    • Grant UK scoops up two wins at National ACR & Heat Pump Awards!
    • Digital resources now available to help engineers with oil boiler heat loss calculations
    • Grant UK add new wireless control to their Uflex range
    • Grant UK unveil new heat pump videos for homeowners
    • Heat pump and low-loss header are a winning combination
    • New Specification Hub launched by Grant UK
    • Grant renewable heating system helps family reduce their energy costs
    • Grant UK kick carbon into touch with Bath Rugby
    • Grant Uflex & Uflex MINI Overlay Underfloor Heating System now available
    • Grant products installed at Staffordshire Training Services’ centre
    • Grant UK's Head Office moves to larger premises
    • Grant UK appoints Lewis Barr as new Area Sales Manager for South East England
    • Grantmas is back for Christmas 2022!
    • Series Two of Net Zero Heating Show podcast has landed!
    • Grant Aerona³ heat pump is the right fit for barn conversion
    • Claim £150 cashback with Grant Underfloor Heating Systems
    • Grant UK refreshes its Find an Installer online search
    • Primary school in Cornwall makes the swap to HVO biofuel
    • Grant UK raises £10,000 for Wiltshire Air Ambulance
    • Sir Robert Buckland MP and Justin Tomlinson MP visit Grant UK’s new HQ in Swindon
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    • Five Top Tips to help look after your Oil Boiler
    • Sealed Systems and the importance of the expansion vessel
    • How to bleed an oil burner
    • Understanding the benefits of R32 refrigerant in heat pumps
    • Why size does matter when it comes to heat pumps
    • Be in the know with blue flame boiler technology
    • How to order a Grant heating system
    • Multi-zone wiring centre for Grant heat pumps
    • Looking after solar thermal systems – it is simple but important
    • Do Grant heat pumps need planning permission?
    • Dispelling the myths around heat pumps
    • How to control your heat pump
    • Biofuel compatibility with Grant boilers
    • What is the Boiler Upgrade Scheme?
    • The case for the low loss header
    • What do this summer’s Building Regs changes mean to you?
    • How to do a heat loss calculation for an oil boiler installation
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• Knowledge Hub
  • Tips & Advice
    • Five Top Tips to help look after your Heat Pump
    • Maximising the benefits of combined heating technologies
    • Getting to know underfloor heating - design, compatibility & versatility
    • Getting to know underfloor heating - performance & installation
    • Understanding net zero carbon targets and how they can be achieved
    • Government Incentives & Initiatives
    • Getting your home heat pump ready
    • The truth about heat pumps – dispelling the myths
    • How quiet are air source heat pumps?
    • Setback controls and heat pumps – what do they do?
  • Education Area
    • What is an air source heat pump?
    • What is a hot water cylinder?
    • What is solar thermal?
    • What is hybrid heating?
    • What is underfloor heating?
    • What is weather compensation?
    • What is biofuel?
  • The Grant House
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  • FAQs
    • Do air source heat pumps work with normal radiators?
    • Can a heat pump be connected to an existing hot water cylinder?
    • How does the defrost cycle work on Grant Aerona³ heat pumps?
    • Does underfloor heating work the same way as a radiator?
    • Which type of flooring is best for underfloor heating?
    • Why should I keep my underfloor heating system running constantly
    • Is planning permission required for solar thermal panels?
    • What is a condensing oil boiler and why is it more efficient?
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