More brands from
Philips Lighting
For professionals
For consumers
Products
Products
Lighting products
Lighting products
Product catalog
Indoor luminaires
Outdoor luminaires
Conventional lamps and tubes
LED Lamps and Tubes
Lighting electronics
Lighting controls
Consumer lighting
Speciality areas
Speciality areas
OEM products
Entertainment
Horticulture
Luminous textile
OneSpace luminous ceiling
Special lighting
Digital projection
Automotive
Product-highlights
Product-highlights
Interact Ready Connected Luminiares
Coreline
Freestreet
Iridium gen3
Ledinaire
MASTER LEDlamps
MASTER LEDtube
MasterColour CDM lamps
Metronomis LED
CorePro LEDlamps
Support
Support
Warranty
Legislation
System areas
System areas
Public spaces
Public spaces
Roads & streets
Tunnels
Arena & stadiums
Recreational sports
Parks & plazas
Bridges, monuments & facades
Education
Airports
Municipal buildings
Office & industry
Office & industry
Office
Industry
Parking
Healthcare
Retail & hospitality
Retail & hospitality
Food & large retailers
Fashion
Petrol & convenience stores
Hospitality
Shopping malls
Museums
About our systems
About our systems
Our systems
Lighting themes
Internet of things
Connected lighting
Smart Cities
Light Beyond Illumination
Services
Services
Services
Services
All Services
Professional Services
Lifecycle Services
Managed Services
Financial services
Financial services
Philips Lighting Capital
Applications
Applications
Philips Lighting Catalogue
Cases
Cases
Case studies
Case studies
Case studies
Luminous magazine
Urban inspiration
Education
Education
Education
Education
Lighting University
LED lighting
Conventional lighting
City.People.Light
The Light Connection - Blog
Support
Support
Purchase
Purchase
Where to buy - UK
Partners
Tradelink
Right first time
Support
Support
Electrical Contractors & Installers
Architects, Specifiers & Lighting Designers
Tools
Warranty
Legislation
Sustainability
Downloads
Privacy center
Suppliers
Connect
Connect
Contact us
Technology Blog
Events
About Signify
For professionals
For consumers
United Kingdom
...
Home
Support
Purchase
Installer Trade
Support
7. Retrofit Lamps
FAQ
< Back to FAQ overview
Retrofit lamps
What you need to know about replacing an existing lamp with an LED
Are all retrofits main voltage?
Are they all the same size?
Will the light output be the same?
Some retrofits appear a bit Cool, why is this?
What could be a possible hazard when retrofitting lamps in existing installations?
Can I put a retrofit in an enclosed or sealed luminaire?
Can linear LEDs be used as a substitute for T8 or T5 fluorescent lamps?
Other
questions
General questions
Industry standards
Dimming with LEDs
LED light fittings
Life and light output
How do LEDs produce light
The environment
White light and color
Technical FAQs
Rejected and Misc questions + medical
Social
View Philips Lighting on Twitter
Our apps
Learn LED
Broaden your knowledge
Hue
The amazing way to control every hue bulb in your home
All tools
Social
View Philips Lighting on Twitter
Our apps
Learn LED
Hue