HIU Manufacturers and Areas – Add Detail Ltd Services:

Collaborate with Top HIU Manufacturers: At Add Detail HIU Services, we work closely with global HIU manufacturers to ensure your systems work flawlessly. Check out our partner manufacturers and the wide areas we serve, providing excellent HIU repair, servicing, and installation.

Enjoy Exceptional Value: Get the best prices and a 12-month guarantee on all part replacements. Your HIU needs are covered affordably and reliably.

Reach Out to HIU Specialists in London: Questions or issues with your HIU systems? Contact our London-based HIU specialists for quick and expert help. Ensure efficient and reliable HIU operations with Add Detail HIU Services, your trusted HIU maintenance and repair partner. Learn more about HIU – Click here.

Looking to improve your heating and hot water system? Click the link to see our top recommended products.

For HIU services, we cover properties with London postcodes Zones 1-3 on the north side of London and zones 1-2 on the south side of London.

HIU Service & Repairs in North London: N1 – Hoxton, Kings Cross. N2 – East Finchley, Fortis Green. N3 – Finchley Church End, Mill Hill. N4 – Finsbury park, Strout Green. N5 – Highbury Square, Highbury East. N6 – Highgate, Hampstead Heath. N7 – Barnsbury, Tufnell Park. N8 – Hornsey, Crouch End. N9 – Edmonton, Waltham Cross. N10 – Muswell Hill, Alexandra Park. N11 – Friern Barnet, Bounds Green. N12 – North Finchley, Woodside park. N13 – Palmers Green. N14 – Southgate, Arnos Grove. N15 – Tottenham, Seven Sisters. N16 – Stoke Newington, Stamford Hill. N17 – South Tottenham.  N18 – Upper Edmonton. N19 – Upper Holloway, Archway. N20 – Whetstone, Totteridge. N22 – Wood Green, Bowes Park.

HIU Service & Repairs in North West London: NW1 – Camden Town, Primrose Hill. NW2 – Cricklewood, Neasden. NW3 – Hampstead, Swiss Cottage. NW4 – Hendon, Brent Cross. NW5 – Kentish town, Gospel Oak. NW6 – Kilburn, West Hampstead.  NW7 – Mill Hill, Arkley. NW8 – St John’s Wood, Lisson Grove. NW9 – Colindale, Kingsbury. NW10 – Willesden, Kensal Green. NW11 – Golders Green, Hampstead Garden Suburb. HA0 – Wembley, Wembley Central, Stonebridge Park. HA9 – Wembley Stadium, Wembley Park.

HIU Service & Repairs in West London: W2 – Paddington, Bayswater. W3 – East Acton, West Acton. W4 – Chiswick, Turnham Green. W5 – Ealing, Park Royal. W6 – Hammersmith, Fulham. W8 – Kensington, Holland Park. W9 – Maida Vale, Little Venice. W10 – North Kensington, Queens Park. W11 – Notting Hill, Holland Park. W12 – Shepherds Bush, White City. W13 – West Ealing, Northfields.

HIU Service & Repairs in South West London: SW1 – Westminster. SW2 – Brixton. SW3 – Kensington, Chelsea. SW4 – Clapham, Stockwell. SW5 – Earls Court. SW6 – Hammersmith, Fulham. SW7 – South Kensington, Knightsbridge. SW8 – Vauxhall, Battersea. SW9 – Stockwell, Lambeth. SW10 – West Brompton, Chelsea. SW11 – Clapham Junction.  SW18 – Wandsworth, Southfields.

HIU Service & Repairs in South East London: SE1 – South Bank, Southwark. SE2 – Abbey Wood, Thamesmead. SE3 – Lewisham, Southwark. SE4 – Brockley, Crofton Park. SE5 – Camberwell, Denmark Hill. SE7 – Charlton, New Charlton. SE8 – Deptford, Evelyn. SE10 – Maze Hill, Greenwich Peninsula. SE11 – Kennington, Vauxhall. SE13 – Lewisham, Hither Green. SE15 – Peckham, Nunhead. SE16 – Rotherhithe, Bermondsey. SE17 – Walworth, Newington. SE18 – Woolwich, Plumstead. SE28 – Thamesmead, Greenwich.

HIU Service & Repairs in East London: E1 – Algate, Shadwell. E2 – Bethnal Green, Haggerston. E3 – Bromley by Bow, Mile End. E4 – Chingford, Highams Park. E5 – Clapton, Leyton. E6 – East Ham, Beckton. E7 – Forest Gate, Stratford. E8 – Hackney Central, Dalston. E9 – Homerton, Hackney Wick. E10 – Leyton, Temple Mills. E11 – Leytonstone, Wanstead. E12 – Manor Park, Aldersbrook. E13 – Plaistow, West Ham. E14 – Poplar, Canary Wharf. E15 – Stratford, Bow. E16 – Silvertown, Canning town. E17 – Walthamstow, Upper Walthamstow. E18 – Woodford, South Woodford. E20 – Olympic Park Stratford, Leyton.

HIU Service & Repairs in Central London: WC1 – Tottenham Court Road, New Oxford Street. WC2 – Chancery Lane, High Holborn. EC1 – Moorgate, Barbican. EC2 – Tower Hill, Clerkenwell, Shoreditch.  EC3 – Algate, Algate East. EC4 – Farrington.

Please contact us to confirm if we cover your area.

Dipesh Jaichand
Easy to book, good comms, fair price and professional service. Recommended.
Daria K
Justin was great, quick to respond and changed thermostat so everything is working now, thank you
Isaac Perez
Excellent service and very professional engineers
Abi Turner
Excellent service. Reliable and value for money. Would definitely recommend.
jane tucker
Having had an estimate from another company who demanded total payment up front by bank transfer, I decide to look at other options for HIU repair. I contacted about 5 companies. Add Detail got back to me very quickly with a much better price and only wanted the cost of parts up front which I could easily pay by credit card. Jason the engineer arrived at the agreed time (he was early in fact) and did an excellent job, making sure that the system was working properly. He was very polite and made no mess. I have recommended this company to others on my development as there are always people having problems with the HIU's.
Erwin De Leon
The service timing was very efficient, engineer that attended my property was accommodating to all my questions. Service value is definitely worth it.
Michel de Baar
The service guy came out within 24 hrs of me calling them, knew to find the solution to the problem and fixed it. He was respectful and friendly, explaining along the way what he observed and gave a few tips on top of it. Thanks! Great service
David Polacek
Great service! Very punctual and professional!
Neli Valkova
Excellent company, very prompt and efficient service. Sorted out problem straight away and price was reasonable. Would highly recommend and will keep using their services. Really impressed.
Sofia Costa
Fantastic service provided by Add Detail! After two terrible experiences with other companies, I discovered Add Detail through a Google search. I messaged them on WhatsApp and received a prompt reply. A few days later, Justin came over and delivered impeccable service. Despite being initially informed that I needed a full HIU replacement, Justin skillfully replaced the malfunctioning pump, leaving everything fully operational! He was incredibly nice and helpful. I plan to rely on Add Detail for all my future HIU servicing needs. I highly recommend them.