Best commercial and industrial aircon businesses in Yishun
Ten Yishun aircon businesses where commercial and industrial work is a primary service, ranked by composite score (see our methodology). Scores last updated 28 October 2026.
Firms that only offer commercial aircon as a side line are left out. For a wider view, see the best air conditioning contractors overall. The order follows review volume, recency and sentiment, so businesses with few or no Google reviews sit lower even where their websites describe solid credentials.
Picks are ranked by score and relevance to commercial & industrial aircon, so a lower overall score can rank higher here.
At a glance
| # | Business | Score | Rating | From | Best for |
|---|---|---|---|---|---|
| 1 | LM Brothers Aircond Pte Ltd | 94 | 5 (551) | — | Multi-unit servicing, overhauls |
| 2 | MX Aircon Engineering PTE LTD | 80 | 5 (49) | — | Prompt, polite repeat service |
| 3 | Jk Aircon Specialist | 76 | 4.6 (71) | — | Budget installs, multi-brand |
| 4 | 3322CoolAir Pte Ltd | 74 | 5 (20) | — | Tidy, punctual servicing |
| 5 | Kiebler Air Pte Ltd | 73 | 5 (13) | — | Free site visits, clear quotes |
| 6 | B&J CONSTRUCTION PTE LTD | 52 | 5 (1) | — | Basic install and repair enquiries |
| 7 | KV Engineering Pte Ltd | 47 | 5 (2) | — | Early-stage shortlisting |
| 8 | Winzone Engineering (S) Pte. Ltd. | 30 | — | — | Quote comparison only |
| 9 | 3H Airconditioning & Engineering Pte Ltd | 30 | — | — | Licensed, certified large jobs |
| 10 | Pipeworld Engineering Pte. Ltd. | 22 | — | — | Further research needed |
1. LM Brothers Aircond Pte Ltd
5 (551 reviews)score 94/100

A 5.0 rating across 551 Google reviews, with recent reviews still strong, gives this the deepest evidence base here. Named technicians Selvan and Ravi come up repeatedly for explaining faults patiently and stripping units down to clean them properly. Work spans chemical overhauls, noisy units and routine servicing across several units.
- Technicians explain faults clearly
- Thorough chemical overhaul and cleaning
- Published price list on website
- Handles both commercial and home units
Google-verified551 Google reviews
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Repair, Aircon Servicing & Cleaning
2. MX Aircon Engineering PTE LTD
5 (49 reviews)score 80/100

Holds a 5.0 rating from 49 Google reviews, with a long-time customer saying the firm has never let them down. Reviewers mention prompt work, good advice and reasonable pricing. Review text is short and general, so job-specific detail is thin.
- Polite, professional crew
- Quick response on jobs
- Reasonable pricing noted
- Good advice on aircon problems
Watch out: Reviews are brief, so confirm your job scope directly when you enquire.
Google-verified49 Google reviews
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Servicing & Cleaning
3. Jk Aircon Specialist
4.6 (71 reviews)score 76/100

Rated 4.6 from 71 Google reviews, with 85% of the last 20 at four or five stars. Recent reviewers like the prices, tidy installs and quick replies. The website lists a free 3 year workmanship warranty and servicing vouchers.
- Competitive pricing on multi-brand units
- Free 3 year workmanship warranty (per website)
- Free servicing vouchers (per website)
- Friendly, responsive staff
Watch out: One recent install review mentions leftover dust and debris, and an odour complaint is still open, so agree site clean-up and follow-up up front.
Google-verified71 Google reviews
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Repair, Aircon Servicing & Cleaning
4. 3322CoolAir Pte Ltd
5 (20 reviews)score 74/100

A 5.0 average from 20 Google reviews, with crews described as thorough, punctual and clean. Confidence is low because review text covers only 15 recent reviews. Servicing is published from $16 per unit.
- Thorough servicing and clean work
- Punctual crews
- Responsive contact person
- General servicing from $16/unit
Watch out: The review sample is small, so treat the picture as partial.
Google-verified20 Google reviewsEstablished since 2022
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Repair, Aircon Servicing & Cleaning
5. Kiebler Air Pte Ltd
5 (13 reviews)score 73/100

Rated 5.0 from 13 Google reviews, praised for a free site visit, clear quotes and little hard selling. Kang Yong is named for explaining options well. The website claims over 12 years of experience, and the review count is small.
- Free site visit and clear quotes
- Kang Yong praised for explaining options
- Installs split systems and handles renovation jobs
- No hidden fees reported
Watch out: Newer reviews are sparse, so recent track record is harder to judge.
Google-verified13 Google reviewsover 12 years of industry experience
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Repair, Aircon Servicing & Cleaning
6. B&J CONSTRUCTION PTE LTD
5 (1 reviews)score 52/100

Only one Google review exists, a five-star rating with no text, so the evidence is very limited. The website lists installation, cleaning, servicing and repair, and claims operation since 2014. Treat it as one to check out yourself.
- Lists installation, cleaning, servicing and repair
- Claims operating since 2014
Watch out: With one review and no text, ask for references before committing.
Google-verified1 Google reviewsSince 2014
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Servicing & Cleaning, Aircon Repair
7. KV Engineering Pte Ltd
5 (2 reviews)score 47/100

Two Google reviews, both five stars, are all the public record offers, so confidence is low. There is not enough recent feedback to read sentiment reliably. It earns a place as a Yishun commercial aircon specialist, but with little to compare.
- Rated 5.0 across 2 Google reviews
- Listed as a Yishun aircon specialist
Watch out: Few reviews, so request a quote and references first.
Google-verified2 Google reviews
Services: Aircon Repair, Commercial & Industrial Aircon, Aircon Installation
8. Winzone Engineering (S) Pte. Ltd.
score 30/100
No Google reviews are on record, so the score rests on profile completeness rather than customer feedback. It is included as a commercial aircon specialist in Yishun. Confidence is low.
- Complete business profile
- Listed as a Yishun commercial aircon specialist
Watch out: No review history yet, so compare quotes and ask for past commercial jobs.
Services: Commercial & Industrial Aircon, Aircon Installation
9. 3H Airconditioning & Engineering Pte Ltd
score 30/100

No Google reviews are available, so the score is low despite strong paper credentials. The website lists BCA ME01 and ME05 licences and claims ISO 9001, 14001 and 45001 certification. It also says it has operated since 1997 and describes commercial and industrial aircon work.
- BCA ME01 and ME05 licences listed on website
- ISO 9001, 14001 and 45001 claimed on website
- Claims operation since 1997
- Describes commercial and industrial aircon work
Watch out: Credentials are website claims and there is no review text, so verify them before tendering.
Google-verifiedEstablished in 1997; 25+ years in operation
Services: Commercial & Industrial Aircon, Aircon Installation, Aircon Servicing & Cleaning, Aircon Repair
10. Pipeworld Engineering Pte. Ltd.
score 22/100
No Google reviews and a thin profile leave little to go on, so confidence is low. It is listed as a Yishun commercial aircon business and may suit buyers who already have a referral.
- Listed as a Yishun commercial aircon business
Watch out: Limited public information, so confirm services and scope directly.
Services: Commercial & Industrial Aircon, Aircon Installation
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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