Best air conditioning contractors in Yishun for HDB flats
These are the top seven aircon contractors for Yishun HDB flats, ranked by an earned composite score (see our methodology). Scores were last updated on 28 October 2026.
This page looks at HDB flat work only. For the wider field across Singapore, see the overall air conditioning contractor ranking. Order here follows review score, volume, recency and sentiment, so smaller firms with fewer reviews sit lower even when their feedback is glowing.
Every business on this list has review evidence for HDB flats. The full field is ranked in the overall ranking.
Picks are ranked by score and relevance to air conditioning contractor, so a lower overall score can rank higher here.
At a glance
| # | Business | Score | Rating | From | Best for |
|---|---|---|---|---|---|
| 1 | 5 Star Aircon Pte Ltd-Aircon Specialist Singapore | 92 | 5 (170) | — | HDB servicing and quick visits |
| 2 | U Sin Air-conditioning Pte Ltd | 88 | 4.8 (183) | — | Neat HDB installs and trunking |
| 3 | Commercestar Engineering | 86 | 4.7 (178) | — | HDB, BTO and resale installs |
| 4 | Air Connection | 77 | 4.3 (112) | — | Honest HDB fault diagnosis |
| 5 | Senpai Aircons Pte Ltd | 77 | 5 (24) | — | Repeat servicing for HDB homes |
| 6 | Fortuna Air-Conditioning & Electrical Pte. Ltd. | 76 | 4.4 (47) | — | HDB installs with consultation |
| 7 | Superior Air-Conditioner Services | 66 | 5 (7) | — | Careful owner-led HDB servicing |
1. 5 Star Aircon Pte Ltd-Aircon Specialist Singapore
5 (170 reviews)score 92/100
A perfect 5 rating across 170 reviews, with recent feedback focused on punctual arrivals and tidy work. For an HDB flat where you want a quick, no-fuss chemical wash or repair, the lack of pushed extras and the fair pricing stand out. One reviewer said the boss took on a difficult ducted unit job that other firms turned down.
- Quick, on-time visits
- Named technician Lee praised as thorough and friendly
- Tidy work and clean-up afterward
- Advises only what is needed
Google-verified170 Google reviews10+ Years Experience
Services: Aircon Repair, 24/7 Emergency Callout, Aircon Servicing & Cleaning, Aircon Installation
2. U Sin Air-conditioning Pte Ltd
4.8 (183 reviews)score 88/100
Scores 4.8 from 183 reviews, with the strongest praise going to tidy trunking and pipe routing on HDB flats and condo renovations. Staff explain unit and system choices without hard selling, which helps when you are sizing a multi-split for a BTO or resale flat.
- Neat trunking and pipe routing
- Advice on system choice without hard selling
- Punctual, professional crews
- Smooth booking and payment handled by office staff
Watch out: One recent servicing review mentioned a blower left unwashed, so confirm what the chemical wash covers when you book.
Google-verified183 Google reviews
Services: Aircon Installation, Aircon Servicing & Cleaning
3. Commercestar Engineering
4.7 (178 reviews)score 86/100
Installation is the draw here, with 4.7 across 178 reviews. Reviewers describe a site visit first, quotes that matched the final bill, and floors and furniture covered during the work. It handles HDB, resale and condo units, which suits a new-flat fit-out.
- Site visit and clear quotes before work starts
- Floors and furniture protected during install
- Daikin and Mitsubishi Electric Starmex systems mentioned
- Named staff such as site manager Raymond praised
Watch out: One older review disputed a piping fix on a Samsung system, and recent reviews do not repeat it.
Google-verified178 Google reviews
Services: Aircon Servicing & Cleaning, Aircon Repair, Aircon Installation, 24/7 Emergency Callout
4. Air Connection
4.3 (112 reviews)score 77/100
A 4.3 rating from 112 reviews, with recent comments on punctual crews who explain faults plainly and skip the upsell. A good fit for an HDB owner with an unclear fault or a routine service who wants a straight answer. It works on Daikin, Mitsubishi and MHI units.
- Technicians explain faults clearly
- No upselling reported on servicing
- Fast replies to messages and bookings
- Tidy workmanship and clean-up
Watch out: For repairs needing parts, plan for possible lead times and a deposit request.
Google-verified112 Google reviews14 years (homepage); since 2011 (About Us)
Services: Aircon Repair, Aircon Installation, Commercial & Industrial Aircon, Aircon Servicing & Cleaning
5. Senpai Aircons Pte Ltd
5 (24 reviews)score 77/100
A 5 rating from 24 reviews, so the sample is smaller than the top names, though recent ratings are all four or five stars. Many customers have used it for years and mention seeing the same technicians. Before and after cleaning photos are a useful extra for HDB owners checking the job.
- Experienced technicians named by customers
- On-time appointments
- No hard selling of service packages
- Before and after photos after cleaning
Watch out: Fewer reviews than the larger firms, so the score carries less weight.
Google-verified24 Google reviews
Services: Aircon Servicing & Cleaning, Aircon Repair, Aircon Installation, 24/7 Emergency Callout
6. Fortuna Air-Conditioning & Electrical Pte. Ltd.
4.4 (47 reviews)score 76/100
Holds 4.4 from 47 reviews, with repeated praise for technician Yao Ming's consultation and follow-up. Reviews cover ducted and wall-mounted installs and unit replacements, with quick work and tidy clean-up. Reviewers describe it as a Daikin proshop, and its website lists an ME01 L5 BCA grade.
- Yao Ming praised for explaining options
- Quick installations with tidy clean-up
- Fair pricing on new units
- Website lists ME01 L5 BCA grade
Watch out: Scheduling can involve some back and forth, so confirm your slot early.
Google-verified47 Google reviewsSince 1974 (founded in 1974; site also cites "50 Years of Cooling Excellence" and "over 50 years of industry experience")
Services: Aircon Installation, Aircon Servicing & Cleaning, Aircon Repair, Commercial & Industrial Aircon
7. Superior Air-Conditioner Services
5 (7 reviews)score 66/100
A 5 rating, but from only 7 reviews, so treat this as a promising early signal rather than an established record. Reviewers describe unhurried servicing by owner Mr Tang, who explains each step and protects floors during the job. It suits an HDB owner who wants one person handling the work.
- Owner-led servicing by Mr Tang
- Explains each step of the job
Watch out: Based on a small review count, and one reviewer found pricing slightly above others.
7 Google reviews
Services: Aircon Servicing & Cleaning
What decides who ranks first?
| Signal | Weight |
|---|---|
| Review sentiment | 28% |
| Google rating | 26% |
| Review volume | 20% |
| Profile completeness | 16% |
| Review recency | 10% |
Ranking data checked 2026-10-28 · Full methodology ›
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