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Customers who rate Koyo Engineering call it a good company. It has been registered as a business in Singapore since 1983 and its website lists aircon work. Send your unit details and ask for the price before booking a visit.
This summary is based on all the information the Honestfix team has put together on this business, last checked 2 Oct 2026. For more on how we do it, see how Honestfix works.
