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Installed base (also install base, install[ed] user base or just user base) is a measure of the number of units of a product or service that are actually in use, as opposed to market share, which only reflects sales over a particular period. Although the install base number is often created using the number of units that have been sold within a particular period, it is not necessarily restricted to just systems, as it can also be products in general. For products which are in use on some machines for many years, the installed base count will be higher than sales over a given period. Some people see it as a more reliable indicator of a platform's usage rate.
Installed base is not the same as the total number of units sold at any given moment in time (***ulative sales numbers), since some of those units will typically be out of use because they have broken, gone missing, or been made obsolete or replaced by newer versions.

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  1. G

    Smart meter installed correctly?

    An OVO fitter installed a gas meter and said we would smell gas for 24-48 hours. I took a look in the meter box and saw a load of putty and sealant around pipe that goes into the property. Just wondered if this looks like it's been done correctly? Or if we should get it looked at.
  2. S

    How to check if air tight trapped sealed gully was installed as designed?

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    • Stainless Steve
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    • air check designed gully installed sealed tight
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    • Forum: Canada
  3. holychihuahua

    Has anybody installed a laddotank puffer 500

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  4. M

    Anybody installed an alpha e-tec

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  5. M

    Help: Intergas Boiler: Has my filling loop been installed

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  6. A

    Why does filling loop have to be installed to the return pipe?

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  7. A

    Banging Pipes After New Megaflo Cylinder Installed

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  8. A

    Heating Pump not horizontally installed by BG and noisy

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  9. K

    Since GSH been installed I’ve had 4 leeks. Boiler moved, valves put in the wrong way.

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  10. D

    Boiler keeps coming on when not timed to since ST9100C installed

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  11. Tommo25

    Anyone Installed boilers for BOXT

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  12. hammers4spanner

    Builder has installed boiler.

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  13. V

    Booster pump installed successfully, but now boiler goes to overheat!

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  14. Dan

    Most Installed Boiler Makes?

    Name a bunch of boiler makes for me and I'll make a poll so we can see which ones get installed the most.
  15. A

    Vaillant ecotec plus installed and one freezing radiator

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  16. H

    hotun tundish anyone installed them

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  17. M

    Water manifold installed and plumber disappeared, has anyone seen a manifold like this before?

    I received a call from a customer who has asked me to take a look at works carried out by a plumber. He has installed UFH to the entire ground floor of this large property. The floor is screeded and finished, there are a few loops that haven't been connected to his lovely manifold but I'm given...
  18. R

    Gas and Electricity Regs Thoughts - Poorly installed hob/Socket

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  19. J

    Part installed system

    Hi guys, I have bought a home in spain, single level bungerlow. when I bought it there is a partially fitted central heating system which I would like to complete, but am a bit confused about how best to go about it. the boiler is an old, guessing 10 years, Ravenheat RFS100ET combi boiler, this...
  20. U

    Looking for a GSR plumber to relocate boiler and hot water tank

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    • UKV
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    • Forum: Plumbing Jobs | The Job-board
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