Gain City is the top pick for BTO owners who want a single retailer and installer with multiple showrooms and bundled appliance deals. D’Aircon Engineering is the runner up for homeowners who prioritize direct communication with a site supervisor and lower overheads. All Best Aircon Engineering is a solid choice for BTO owners comparing packaged quotes from smaller contractors who can move quickly through multiple units in the same estate. These firms handle the full process from unit selection to concealed piping and after-sales service, ensuring your renovation stays on schedule before ceiling boards are installed.
How we picked this list
We assembled this shortlist through desk research across public sources, including company websites, ACRA registries, and renovation forums. We verified that every website listed resolves correctly and that the business is actively trading. The companies are ranked based on the criteria in the table below, focusing on BTO-specific experience and service transparency. There are no paid placements on this list.
Table of Contents
- How we picked this list
- Intro
- Quick Picks
- Comparison Table
- The List
- 1. Gain City
- 2. All Best Aircon Engineering
- 3. Newway Aircon
- 4. Coolserve Airconditioning
- 5. Airmark Aircon
- 6. D’Aircon Engineering
- 7. Starmech Aircon
- 8. Benjamin Aircon
- 9. Luce Aircon Engineering
- 10. Apex Aircon
- How to Choose
- FAQ
Intro
Many new BTO owners believe they must buy aircon units and installation from the same company. This is not true. You can buy from a retailer and hire a separate installer, which often gives better value and scheduling flexibility. The decision is hard because installation timing is critical. It must happen before your false ceiling and carpentry works begin. If you wait too long, you face costly rework to expose pipes. I researched these companies to help you find a reliable partner who understands BTO specific constraints like compressed slabs and hidden drainage lines. Check our guide on renovating your HDB BTO flat for the full timeline.
Quick Picks
Choose Gain City if you want a big showroom experience and bundled appliance deals. Choose D’Aircon Engineering on a tighter budget with direct site supervisor contact. Choose All Best Aircon Engineering for flexible scheduling during tight renovation windows.
Comparison Table
| Business | Best for | Price band | Area |
|---|---|---|---|
| Gain City | Bundled appliance deals, single contact | Mid to high | Islandwide |
| All Best Aircon Engineering | Packaged quotes, flexible scheduling | Mid | Not stated |
| Newway Aircon | Installation and regular chemical wash | Mid | Not stated |
| Coolserve Airconditioning | Long term servicing plans | Mid | Not stated |
| Airmark Aircon | Troubleshooting and replacement jobs | Mid | Not stated |
| D’Aircon Engineering | Direct communication, competitive quotes | Mid to low | Not stated |
| Starmech Aircon | Direct supplier and installer | Mid | Not stated |
| Benjamin Aircon | Upgrading old aircon in resale flats | Mid to low | Not stated |
| Luce Aircon Engineering | Design conscious concealed systems | Mid | Not stated |
| Apex Aircon | Alternative quote across multiple HDB towns | Mid to low | Not stated |
The List
1. Gain City

Gain City is a major appliance retailer that coordinates aircon installation for new BTO flats and resale homes. They handle the entire process from unit choice to installation and after sales servicing. Their model is attractive for homeowners who want one contact for sales and service, avoiding the hassle of managing separate vendor relationships.
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What’s good
- Multiple showrooms across Singapore make unit selection and inspection easy.
- Owns a large servicing operation rather than only selling units.
- Common choice for BTO promotions that bundle refrigerators or washing machines.
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What to watch
- Popular installation slots fill fast around BTO key collection periods.
- Base quotes may exclude trenching, racks, and longer piping runs. Request itemised pricing.
Who it suits: Homeowners who want a big showroom experience and bundled appliance deals. Look elsewhere if you prefer a smaller, dedicated aircon contractor for lower overheads.
Price: Mid to high.
Details
Name: Gain City
Website: https://www.gaincity.com
Area: Islandwide
2. All Best Aircon Engineering

All Best Aircon Engineering supplies, installs, and services residential aircon, including concealed piping work for BTO and resale HDB flats. They are known as a local contractor rather than a department store middleman, which can mean more direct communication with the installation team.
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What’s good
- Known as a local contractor rather than a department store middleman.
- Can quote installation separately from the aircon unit price.
- Tends to offer flexible scheduling during the renovation window.
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What to watch
- Name is similar to other aircon firms. Verify the ACRA registration before paying deposits.
- Confirm whether ducting, false ceiling cutting, and core drilling are included in the quote.
Who it suits: BTO owners comparing packaged quotes from smaller aircon contractors. Look elsewhere if you need a large showroom for unit selection.
Price: Mid.
Details
Name: All Best Aircon Engineering
Website: https://www.allbest.com.sg
3. Newway Aircon

Newway Aircon provides residential aircon sales, concealed installation, and maintenance with a focus on HDB and condo packages. They are often seen in renovation discussions for HDB projects, indicating a strong reputation in the local community for handling standard residential needs.
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What’s good
- Offers packages tied to major aircon brands.
- Seen in renovation discussions for HDB projects.
- Schedule can be arranged to suit ceiling and electrical works.
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What to watch
- Smaller contractors depend on installers on the day. Ask for the technician’s name early.
- Piping length beyond the standard allowance can increase the final bill.
Who it suits: Homeowners who want installation and a regular chemical wash schedule managed by one company. Look elsewhere if you need complex commercial-grade systems.
Price: Mid.
Details
Name: Newway Aircon
Website: https://www.newway.sg
4. Coolserve Airconditioning

Coolserve Airconditioning runs aircon installation for homes and offices, plus routine servicing and chemical cleaning plans suited to Singapore’s heavy usage. They are a good option for owners who prefer dealing with a contractor that offers long term servicing plans, ensuring ongoing support after the initial install.
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What’s good
- Gives a single point of contact for new installation and later maintenance.
- Commonly listed on renovation contractor shortlists.
- Can provide quotations for both parts and manpower without the need to buy through a retailer.
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What to watch
- Confirm whether the company offers its own warranty on top of the manufacturer warranty.
- Ask for a separate line on refrigerant piping, condensate piping, and insulation materials.
Who it suits: Owners who prefer dealing with a contractor that also offers long term servicing plans. Look elsewhere if you want a large retail brand with multiple showrooms.
Price: Mid.
Details
Name: Coolserve Airconditioning
Website: https://www.coolserve.com.sg
5. Airmark Aircon

Airmark Aircon provides home aircon installation, servicing, and repair, including BTO concealed water piping and condenser installation. They are a good fit for homeowners searching for a smaller firm that can handle troubleshooting and replacement jobs after the initial install, offering a responsive service for ongoing needs.
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What’s good
- Handles both installation and breakdown repairs.
- Can support older HDB flats with non standard wall and piping conditions.
- Usually responds to online enquiries with quick quotes.
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What to watch
- Verify the quality of the copper piping grade quoted.
- Ask if trenching through the false ceiling is charged per point or per metre.
Who it suits: Homeowners searching for a smaller firm that can handle troubleshooting and replacement jobs. Look elsewhere if you need a large team for simultaneous multi-unit installation.
Price: Mid.
Details
Name: Airmark Aircon
Website: https://www.airmark.com
6. D’Aircon Engineering

D’Aircon Engineering performs residential aircon installation projects, including mounting of condensers, concealed pipes, and electrical routing for BTO and resale homes. They focus on the engineering details of piping and drainage, which is crucial for preventing leaks in BTO flats where ceilings are bare during renovation.
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What’s good
- Focused on the engineering details of piping and drainage.
- Works with renovation contractors to time installation before ceiling boards go up.
- Lower overheads can show up in more competitive quotes.
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What to watch
- Pricing transparency depends on the project scope. Request a site visit before committing.
- Check if the company provides an official receipt with GST.
Who it suits: Homeowners who value direct communication with a site supervisor during the renovation. Look elsewhere if you prefer a big brand with a physical showroom.
Price: Mid to low.
Details
Name: D’Aircon Engineering
Website: https://www.daircon.com
7. Starmech Aircon

Starmech Aircon offers aircon installation and servicing for HDB, condo, and landed property, including aircon packages with concealed piping. They are a good choice for BTO owners who want a direct supplier and installer rather than a department store arrangement, allowing for more flexible negotiations on pricing and terms.
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What’s good
- Provides a broad range of aircon capacities for HDB size rooms.
- Able to schedule multiple units in one session for a new home.
- Can recommend installation positions based on HDB compressed slab restrictions.
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What to watch
- Some contractors require the renovation contractor to be at site at the same time.
- Check the bracket and safety rope arrangement for condenser units installed on drop-down floors.
Who it suits: BTO owners who want a direct supplier and installer rather than a department store arrangement. Look elsewhere if you need a large retail presence for immediate unit viewing.
Price: Mid.
Details
Name: Starmech Aircon
Website: https://www.starmech.net
8. Benjamin Aircon

Benjamin Aircon specialises in home aircon repair, servicing, and installation, including replacement of old aircon units during HDB renovations. They are experienced in replacing older piping lines that do not match current unit layouts, making them a good fit for resale flat owners upgrading their systems.
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What’s good
- Experienced in replacing older piping lines that do not match current unit layouts.
- Can troubleshoot drainage and compressor faults during the same visit.
- Often available for short notice servicing.
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What to watch
- Smaller team size may limit availability during peak installation season.
- Ask whether they will supply the new bracket or reuse the existing one.
Who it suits: Resale flat owners upgrading old aircon rather than new BTO owners packing from scratch. Look elsewhere if you need a new installation for a full BTO flat.
Price: Mid to low.
Details
Name: Benjamin Aircon
Website: https://www.benjamin.sg
9. Luce Aircon Engineering

Luce Aircon Engineering handles aircon supply, installation, and regular maintenance for residential projects, with attention to modern concealed systems. They are a good choice for design conscious homeowners coordinating aircon works alongside carpentry and false ceiling design, ensuring the final look is clean and integrated.
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What’s good
- Can adjust indoor unit return air positions based on carpentry design.
- Supports both casual quarterly servicing and one-time deep cleaning.
- Replies clearly to detailed renovation questions in forums.
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What to watch
- Less visible in brick and mortar retail, which could complicate after sales contact.
- Check jurisdiction if aircon piping needs to cross a neighbour’s window or wall.
Who it suits: Design conscious homeowners coordinating aircon works alongside carpentry and false ceiling design. Look elsewhere if you need a large retail outlet for immediate support.
Price: Mid.
Details
Name: Luce Aircon Engineering
Website: https://www.luceaircon.sg
10. Apex Aircon

Apex Aircon provides installation of new aircon systems and routine maintenance for HDB and condo owners in Singapore. They are a good option for homeowners searching for an alternative quote from a company that works across multiple HDB towns, offering competitive pricing and flexibility.
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What’s good
- Appears in multiple online contractor lists for residential aircon.
- Usually serves islandwide rather than one estate.
- Can service different brands if you already own the aircon unit.
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What to watch
- Not to be confused with any auto aircon shop using the same name.
- Ask for a comprehensive contract with agreed installation dates.
Who it suits: Homeowners searching for an alternative quote from a company that works across multiple HDB towns. Look elsewhere if you need a dedicated BTO specialist with a physical showroom.
Price: Mid to low.
Details
Name: Apex Aircon
Website: https://www.apexaircon.com
How to Choose
Use this table to compare your options based on the criteria that matter most to you. Each criterion is weighted to reflect its importance in a BTO renovation context.
| Criterion | Why it matters | What good looks like |
|---|---|---|
| ACRA registration and work crew | Aircon installation involves electrical connections, drilling, and work at height. Unregistered contractors vanish after defects appear. | The firm gives you the exact legal entity name and UEN, and will state who will be on site each day. |
| Experience with BTO concealed piping | BTO ceilings are bare during renovation, so copper piping, drainage, and trunk lines have to be routed before false ceiling work. Poor routing means leaks inside the false ceiling later. | The technician can explain how pipes will run room by room, and coordinates with your renovation contractor on the sequence. |
| Clear itemised quote | Aircon pricing can hide trenching costs, compressor rack installation, fuse boxes, and gas pressure test blasting. | The quote separates unit cost, installation per point, copper piping metre, condenser mounting, material brand, and GST. |
| Brand partnerships or authorised installer status | Using a non-authorised installer can void your aircon brand warranty or limit the manufacturer’s willingness to support claims. | The quote says whether the company is an authorised dealer or installer for the brand you plan to buy. |
| Warranty on installation workmanship | Manufacturer warranty covers defective parts, not leaking pipe joints or badly secured brackets. Workmanship faults will otherwise be expensive to fix. | The contractor gives a dated letter or email confirming a workmanship warranty period, typically one year or more. |
| After installation servicing support | Aircons in Singapore run about ten months a year. A company that loses interest after installation makes chemical cleaning and part replacement harder later. | There is a published service line or booking channel, and the firm offers appointment times outside typical work hours. |
| Timing reliability around renovation milestones | Installation must happen before ceiling boards or carpentry conceal the pipes. A missed aircon slot can delay the entire renovation. | The company agrees on a date with your contractor, confirms a morning or afternoon window, and arrives with enough crew members to finish on time. |
FAQ
Should I get aircon installation from Gain City or a dedicated aircon company for my BTO flat?
It depends on what you value. Gain City is convenient if you want to buy units and installation from one place. A dedicated aircon company like D’Aircon Engineering may offer lower overheads and more flexible scheduling. Compare itemised quotes from both types. Ensure the installer is authorised for your chosen brand to maintain warranty validity.
Can I install aircon in my BTO after the false ceiling is already done, or must it happen during renovation?
It is best to install aircon during renovation before the false ceiling is closed. Installing after the ceiling is done requires cutting into the ceiling to access pipes, which is messy and costly. It also risks damaging existing finishes. Always coordinate with your renovation contractor to schedule aircon installation before ceiling work begins.
Does my BTO aircon contractor need to be a licensed electrician?
The aircon installer does not need to be a licensed electrician for the aircon work itself. However, any electrical wiring for the aircon units must be done by a licensed electrician. Ensure your renovation contractor or the aircon company arranges for a licensed electrician to handle the wiring. This ensures compliance with HDB regulations and safety standards.
What is the typical concealed piping layout for a 5 room BTO with four aircon points?
Typically, each aircon point has its own copper piping run from the outdoor compressor unit. The pipes are routed through the ceiling cavity before the false ceiling is installed. Condensate drainage lines also run separately to a drain point. Ensure the piping is insulated to prevent condensation. The layout should allow for easy maintenance access in case of leaks or repairs.
Which aircon brand has the best after sales support in Singapore for new BTO owners?
Daikin, Mitsubishi Electric, and Panasonic are known for strong after sales support in Singapore. They have extensive networks of authorised service providers. Check if your chosen installer is an authorised dealer for the brand you prefer. This ensures you get full warranty coverage and reliable service. Read recent reviews for the specific installer you plan to use.




