Retrofitting refers to the addition of new technology or features to older systems. An example of this is car customizing, where older vehicles are fitted with new technologies: power windows, cruise control, remote keyless systems, electric fuel pumps, etc.

Building Construction

Retrofitting may also refer to the process of strengthening older buildings in order to make them earthquake resistant ("See also Seismic retrofit").


Principally retrofitting describes the measures taken in the manufacturing industry to allow new or updated parts to be fitted to old or outdated assemblies (like blades to wind turbines).

The production of retrofit parts is necessary in manufacture when the design of a large assembly is changed or revised. If, after the changes have been implemented, a customer (with an old version of the product) wishes to purchase a replacement part then retrofit parts and assembling techniques will have to be used so that the revised parts will fit suitably onto the older assembly.

Environmental Management

The term is also used in the field of environmental engineering, particularly to describe construction or renovation projects on previously-built sites, to improve water quality in nearby streams, rivers or lakes. Sites with extensive impervious surfaces (such as parking lots and rooftops) can generate high levels of stormwater runoff during rainstorms, and this can damage nearby water bodies. These problems can often be addressed by installing new stormwater management features on the site, a process that practitioners refer to as stormwater retrofitting. Stormwater management practices used in retrofit projects include rain gardens, permeable paving and green roofs. [Center for Watershed Protection. Ellicott City, MD. [ "An Eight-Step Approach to Stormwater Retrofitting: How to Get Them Implemented."] Accessed April 20, 2008.] "(See also stream restoration.)"

See also

* Aftermarket kit
* Diesel particulate filter (DPF)
* Electric vehicle conversion
* Retcon


External links

* [ Diesel Retrofit in Europe] .
* [ Diesel retrofit glossary] .
* [ Diesel Retrofits Help Clean Regions' Air] .
* [ CARB's Diesel Emission Control Strategies Verification - information on verified retrofit technologies]

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Look at other dictionaries:

  • retrofit — Ⅰ. retrofit UK US /ˈretrəʊˌfɪt/ verb [T] ( tt ) PRODUCTION ► to provide a machine with a part, or a place with equipment, that the machine or place did not have when it was built: »We re retrofitting these plants with state of the art emission… …   Financial and business terms

  • retrofit — ☆ retrofit [re′trə fit΄ ] n. [ RETRO & FIT1] a change in design, construction, or equipment, as of an aircraft or machine tool already in operation, in order to incorporate later improvements vt., vi. retrofitted, retrofitting to modify with a… …   English World dictionary

  • retrofit — 1954, from retro(active) + (re)fit …   Etymology dictionary

  • Retrofit — Unter Retrofit wird die Modernisierung oder der Ausbau bestehender Produktionsanlagen verstanden. Inhaltsverzeichnis 1 Ziele 2 Gründe 3 Maßnahmen 4 Vorteile eines Retrofits …   Deutsch Wikipedia

  • retrofit — retrofittable, adj. v. /re troh fit , re troh fit /; n., adj. /re troh fit /, v., retrofitted or retrofit, retrofitting, n., adj. v.t. 1. to modify equipment (in airplanes, automobiles, a factory, etc.) that is already in service using parts… …   Universalium

  • retrofit — UK [ˈretrəʊˌfɪt] / US [ˈretroʊˌfɪt] verb [transitive] Word forms retrofit : present tense I/you/we/they retrofit he/she/it retrofits present participle retrofitting past tense retrofitted past participle retrofitted to change or improve something …   English dictionary

  • retrofit — [[t]re̱troʊfɪt[/t]] retrofits, retrofitting, retrofitted VERB To retrofit a machine or a building means to put new parts or new equipment in it after it has been in use for some time, especially to improve its safety or make it work better. [V n] …   English dictionary

  • retrofit — transitive verb Date: 1953 1. to furnish (as a computer, airplane, or building) with new or modified parts or equipment not available or considered necessary at the time of manufacture 2. to install (new or modified parts or equipment) in… …   New Collegiate Dictionary

  • Rétrofit — Le rétrofit (parfois orthographié retrofit) est un anglicisme désignant la pratique consistant à échanger des pièces usées et des composants d équipements obsolètes tout en maintenant la configuration des équipements et de l unité de production d …   Wikipédia en Français

  • retrofit — 1. verb /ˈɹɛt.ɹəʊˌfɪt/ a) To add or substitute new parts or components to some device, structure etc., that were not previously available; to modernize The bug was so bad that we had to retrofit our patch to the la …   Wiktionary

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