Fixture : Is one which is fixed or attached to something asa permanent attachment for e.g. the fixtures of a pump; the fixtures of adwelling which cannot be moved or removed.
Fitting: It is a small detachable part of a machine or apparatus.
Services: Involves the installation, maintenance and repairs of a particular fitting used at home. Building services can be stated as the elements needed to allow a building to function, and provide for the occupants needs. These elements include air conditioning, ventilation, heating, water services, gas, electricity, lighting, power, fire alarm, voice and data systems and of late renewable energy requirements.