How long can I expect a service appointment to take?

One complaint describes a technician completing per-unit service in under 1 minute, though this appears unusually brief and was flagged as poor quality.

Do they keep records of past work?

One customer reported their insulation replacement from February was not in the company system when a technician re-quoted the same work in October, despite WhatsApp proof provided.

Sub Cool Engineering Pte Ltd

Updated 2026-09-15 · 2,661 reviewed · 598 listed · Scored from 36 Google reviews · How we rank ›

3.7(36) 61 low data composite score See reviews on Google ✓ Google-verified

Aircon InstallationAircon Servicing & RepairAircon Maintenance ContractsGas Top-Up & Chemical Cleaning

Location: Central Area, Singapore
Services: Aircon Installation, Aircon Servicing & Repair, Aircon Maintenance Contracts
Reviews: 36
Ranking: #275 in Aircon Installation
Best for: Homeowners seeking a long-term maintenance provider willing to commit to multi-year service relationships.

Business data from Google Business Profile, checked 2026-09-15.

What do recent reviews say?

Long-standing clients report reliable service and fair prices over years. New or occasional customers encounter aggressive upselling, poor job quality (dust in blowers, units failing weeks after service), and staff who become hostile if asked to refuse extras.

Based on limited recent reviews, so treat this as low-confidence.

Praised for

prompt service response
clean workmanship
long-term reliability for satisfied clients
fair pricing

Watch-outs

pushy upselling and aggressive behavior when declined
poor cleaning during servicing
unreliable record-keeping
recurring leaks and system damage
poor communication and follow-up

responsivefair-pricingclean-workmanshippushy-upsellingpoor-communicationrecurring-leaksunresolved-issue

Best for: Homeowners seeking a long-term maintenance provider willing to commit to multi-year service relationships.

Think twice if: Budget-conscious or first-time users; complaints of aggressive upselling when declining extras, incomplete cleaning during servicing, and damage claims emerging weeks after work.

What are they good at?

Established relationships (clients 6+ years)
Generally prompt replies to inquiries
Cleans work areas during jobs

Worth knowing

Masud named as long-serving, approachable staff member
Clients report 6-year+ tenure with the business
Chemical washing and trunking replacement mentioned as services
One customer claims replacement insulation was re-sold 8 months later with no system record kept
One technician completed service per unit in under 1 minute according to complaint

What reviews say by service

Aircon Installation: Long-term clients praise multi-unit installs; others report post-install leaks and system failures within weeks.
Aircon Servicing & Repair: Loyal customers value prompt response and cleanliness; complaint of dust-filled blowers after service and refusal to continue work if upsell declined.

How it compares

Rated 3.7 against a 4.5 average across the 459 aircon installation businesses listed here.
Has more Google reviews than 69% of the businesses in this directory.

How we scored this

How We Rank

Star rating 35

Review volume 68

Review recency 93

Review sentiment 48

Profile completeness 100

Verification 30

Rating breakdown

FAQ

How long can I expect a service appointment to take?: One complaint describes a technician completing per-unit service in under 1 minute, though this appears unusually brief and was flagged as poor quality.
Do they keep records of past work?: One customer reported their insulation replacement from February was not in the company system when a technician re-quoted the same work in October, despite WhatsApp proof provided.

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