Ban Leng attracts strong praise for friendly staff, fair prices, and fast delivery, but faces serious complaints about installation quality and appointment reliability. Multiple customers report faulty work (reverse wiring, water leaks, piping problems) and slow responses when repairs are needed. Some installations lack professional standards, and appointment no-shows appear to be a recurring issue despite the business operating 7 days a week.
Recent shift: Older reviews (2-3 years ago) were more consistently positive, praising Ms Tan, Ms Suzanne, and competitive pricing. Recent reviews show a marked increase in complaints about installation defects and appointment failures. The 1-star concentration (28% of 100 reviews) appears heavily weighted to the past year.
Limited review evidence: one five-star rating supports an established firm operating since 1982 in Bukit Mertajam. Their website lists broad HVAC and electrical services across Penang, with MS ISO 9001:2015 certification claimed.
Not enough recent reviews yet to synthesise a reliable sentiment read for this business.
All four Google reviews rate Wincool Engineering five stars. Reviewers describe the work as "very good" with no complaints recorded, though review text is sparse. Limited detail available on specific services or staff.
Last updated 2026-08-02