F-Gas registered
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Hollywell Building Services Limited
Operates in St. Albans
Installation types
Installs portable, split, wall-mounted and monoblock air conditioners.
Credentials
Certification signals checked from public installer registers.
F-Gas registered
REFCOM
REFCOM Elite
F-Gas registered
REFCOM
F-Gas
Certificate REF1015501
Last checked 26 Jul 2026
REFCOM Elite
REFCOM
REFCOM Elite
Certificate REE1000178
Last checked 26 Jul 2026
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