About Delta House Group
Delta House Group is a family-run mechanical contractor based in Maidstone, serving London, the Home Counties and South East England. It designs, installs, maintains and repairs domestic air conditioning, offering a free site survey and consultation before preparing a proposal.
Operating hours are Monday to Friday, 8:30am–5pm. New enquiries use estimating@delta-house.co.uk; ongoing enquiries use contracts@delta-house.co.uk.
A free site survey and consultation precede the proposal. Residential pricing depends on reviewing the project's requirements.
Preventive maintenance agreements are available to domestic customers, including for systems installed by other companies. Plans are tailored to usage, unit numbers and equipment types, with arranged engineer visits, inspections, cleaning and testing, and a fast repair call-out response advertised. Maintenance equipment includes heat pump, heat recovery and VRV/VRF systems.
The family-run business states that it was incorporated in 1993. Its contract managers each have more than 20 years of experience, and its directors each have over 25 years in mechanical engineering.
The company advertises F-Gas-certified operatives, Constructionline Gold and SafeContractor approval, alongside Daikin D1 and Toshiba T7 approval.
Photos from Delta House Group
Images: Delta House Group
F-Gas credentials
Certification stated by the business
View source →Areas covered
London, Home Counties, South East of England.
Services & systems
- Installation
- Maintenance
- Repairs
- System design
- Free surveys
Ask the installer to recommend a system following a survey.
Brands
MitsubishiDaikinToshiba
Discuss your home with Delta House Group
Tell us your postcode, the rooms you want to cool and when you need the work.
Contact this business →Planning your installation? Use our quote checklist to get started.



