Five-star reviews praise fast, punctual service and fair basic pricing. Negative reviews centre on no-shows, unexpected charges for diagnostics that led elsewhere for repair, messy installation work especially on upper-storey jobs with hidden copper-line costs, and bathroom mess left after cleaning. Technicians Umer and Osman were named for quality work in separate reviews.
Zen Engineering installs and services air conditioners across Penang with strong follow-through: staff answer queries patiently, technicians work fast, and pricing stays fair. The founder brings 30 years of industry experience, and most recent jobs run without hiccup.
Strong track record across aircon work and electrical services. Reviewers consistently praise speed, tidiness, and willingness to finish jobs thoroughly; Hafiz and Mohamad are named favourably for their punctuality and approachability.
Many customers report swift, well-finished installations and servicing from named teams (Adi, Syahmi, Faris), with fair pricing and clear post-job briefings. However, recent reviews flag serious gaps: technicians arrived without tools, misidentified problems (diagnosing motherboard failure when gas had leaked), and admin ignored multiple contact attempts for two days; Mr. Azri Harith eventually stepped in to fix one escalated case, but inconsistency and communication breakdowns have left some customers stranded. The business claims 12 years' experience and serves eight areas across Penang. Skill varies by team; installation reviews lean positive, but diagnostic work and follow-up suffer from missed appointments and wrong root causes, raising concerns about quality control across a larger operation.
Last updated 2026-08-02