Cosier
London · East of England | Air source. Home heat pump enquiries and initial system-design consultations.
Phone: 020 8050 4030
Contact details
Phone: 020 8050 4030
Email: hello@cosier.com
Published business address: Cosier Heat Ltd, Kingsbury House, 468 Church Lane, London, NW9 8UA (postal and registered office; no goods deliveries)
Published opening hours: Monday–Friday 9am–6pm
Contact page: https://cosier.com/contact/
Coverage
London, Hertfordshire, Bedfordshire, Cambridgeshire, Essex, Norfolk and Suffolk.
Services
Home heat pump enquiries and initial system-design consultations.
Heat pump types
Air source. Confirm the model and complete system scope.
Before you appoint an installer
Check the exact contracting business and its current certification for the proposed technology. Ask for a room-by-room heat-loss calculation, system design, an itemised quote and written aftercare terms. Compare more than one quotation.
About this listing
Public business information checked on 5 November 2026. This listing is informational; workmanship, customer service and current certification have not been independently assessed. Confirm contact details, coverage and availability directly. No referral arrangement is attached.
Sources
https://cosier.com/contact/
https://cosier.com/about/