Aircon servicing is done at your flat, so where a company keeps its office matters much less than whether it covers your block, how soon a technician can come, what it charges and what warranty it gives. We ranked five firms that serve Woodlands, Admiralty and Marsiling on those points. Billy Aircon comes first: it lists the Woodlands neighbourhoods it covers, publishes a price (from S$16 per unit) and states a 90-day workmanship warranty.
Woodlands is the regional centre of the North Region, home to about a quarter of a million residents across neighbourhoods including Marsiling, Woodgrove and Admiralty. Most aircon firms here serve the whole island. A few keep offices and stores in the Woodlands industrial estates, which is handy if you want to drop by, but it does not make their technicians any closer to your flat than an islandwide team.
How we ranked these: published coverage of Woodlands, published prices and warranty, the range of services listed, and published office hours.
At a glance
| # | Business | Best known for | Price |
|---|---|---|---|
| 1 | Billy Aircon | Published servicing from S$16 per unit with a 90-day warranty, covering Woodlands to Admiralty | S$16 |
| 2 | Cool-Aire | A dedicated Woodlands service, quarterly maintenance contracts and at least 90 days' warranty | On enquiry |
| 3 | THL HQ Aircon | Servicing, chemical overhauls and VRV systems from a Woodlands Industrial Park office you can visit | On enquiry |
| 4 | Kaili Aircon & Electrical | VRV and VRF installs, kitchen ventilation and water chillers alongside home servicing, since 1999 | On enquiry |
| 5 | JK Aircon | Servicing, chemical cleaning, repairs and aircon sales from an office on Woodlands Close | On enquiry |
How do the five compare?
| Rank | Company | Published coverage of Woodlands | Published price | Published warranty | Phone |
|---|---|---|---|---|---|
| 1 | Billy Aircon | Names Woodlands Central, Admiralty, Marsiling, Woodlands South and Innova | From S$16 per unit | 90 days (workmanship) | +65 9456 0875 |
| 2 | Cool-Aire | Dedicated Woodlands page | Not published | At least 90 days | +65 9768 0878 |
| 3 | THL HQ Aircon | Not stated (office in Woodlands) | Not published | Not published | +65 6358 3219 |
| 4 | Kaili Aircon & Electrical | Not stated | Not published | Not published | +65 8468 3326 |
| 5 | JK Aircon | Woodlands page on its site | Not published | Not published | 6684 2801 |
The S$16 figure is Billy Aircon’s published starting price, checked on 3 October 2026. Its page does not say whether GST is included or how many units the rate applies to, so ask for a written quote.
Best known for: Published servicing from S$16 per unit with a 90-day warranty, covering Woodlands to Admiralty
Billy Aircon ranks first because it is the most open about what you will get in Woodlands. Its Woodlands page names the neighbourhoods it covers (Woodlands Central, Admiralty, Marsiling, Woodlands South and Innova), says the firm has operated since 2003, and publishes servicing from S$16 per unit with a 90-day workmanship warranty. Services listed include chemical wash, gas top-up, installation, and fixing leaking or warm units. Tel +65 9456 0875 or +65 9459 8727.
- Services
- Aircon servicing
- Credentials
- 90-day workmanship warranty
- Address
- Islandwide service (covers Woodlands)
- Founded
- 2003
- Price
- From S$16 Servicing from S$16 per unit as published; GST treatment not stated Source
Visit website: Billy AirconCall +65 9456 0875Full profile: Billy Aircon
Best known for: A dedicated Woodlands service, quarterly maintenance contracts and at least 90 days' warranty
Cool-Aire has a page dedicated to Woodlands, says it has more than 20 years of servicing and repair experience, and gives at least 90 days' service warranty. It lists servicing, chemical wash and overhaul, gas top-up, repair, compressor cleaning, installation and emergency repairs, and offers maintenance contracts with quarterly scheduling. Its office is at 701 Geylang Road. Tel +65 9768 0878 (WhatsApp).
- Services
- Servicing and maintenance, chemical wash and overhaul, gas top-up, repair, compressor cleaning, installation, emergency repair, quarterly maintenance contracts
- Credentials
- At least 90 days' service warranty
- Address
- 701 Geylang Road #04-04, Teambuild Centre, Singapore 389687
Visit website: Cool-AireCall +65 9768 0878Full profile: Cool-Aire
Best known for: Servicing, chemical overhauls and VRV systems from a Woodlands Industrial Park office you can visit
THL HQ Aircon Pte Ltd has an office at 38 Woodlands Industrial Park E1 #01-07, open Monday to Friday 9am to 6pm and Saturday 9am to 1pm, so you can call in person. It lists normal servicing, chemical wash, chemical overhaul, gas top-up, troubleshooting, part replacement, installation, repairs and VRV systems, for homes and businesses. Tel +65 6358 3219, WhatsApp +65 9066 1204.
- Services
- Normal servicing, chemical wash, chemical overhaul, gas top-up, troubleshooting, part replacement, VRV systems, installation, repair
- Credentials
- THL HQ Aircon Pte Ltd
- Address
- 38 Woodlands Industrial Park E1 #01-07, Singapore 757700
Visit website: THL HQ AirconCall +65 6358 3219Full profile: THL HQ Aircon
Best known for: VRV and VRF installs, kitchen ventilation and water chillers alongside home servicing, since 1999
Kaili Aircon & Electrical Pte Ltd (UEN 201227576H) says it began in 1999 as a sub-contractor. Beyond home servicing and repair, it lists VRV and VRF installation, kitchen ventilation, water chillers and ductwork, and services brands including Daikin, Mitsubishi Heavy Industries, Panasonic, Midea and Fujitsu. That makes it a good fit for shops and small commercial sites. Tel +65 8468 3326.
- Services
- Aircon installation, servicing, repair, chemical cleaning; VRV/VRF; kitchen ventilation; water chillers; ductwork; second-hand aircon and spare parts
- Credentials
- Kaili Aircon & Electrical Pte Ltd, UEN 201227576H
- Address
- Woodlands, Singapore
- Founded
- 1999
Visit website: Kaili Aircon & ElectricalCall +65 8468 3326Full profile: Kaili Aircon & Electrical
Best known for: Servicing, chemical cleaning, repairs and aircon sales from an office on Woodlands Close
JK Aircon is at 11 Woodlands Close #04-07, open Monday to Friday 10am to 5pm and Saturday 11am to 5pm. It lists general servicing, chemical cleaning and overhaul, gas top-up, troubleshooting and repairs, installation and replacement, and aircon sales. Tel 6684 2801, WhatsApp 9114 2626.
- Services
- General servicing, chemical cleaning, chemical overhaul, gas top-up, troubleshooting and repair, installation and replacement, aircon sales
- Address
- 11 Woodlands Close #04-07, Singapore 737853
Visit website: JK AirconCall +65 6684 2801Full profile: JK Aircon
What is the difference between servicing, a chemical wash and a chemical overhaul?
General servicing cleans filters, coils and drainage in place. A chemical wash uses cleaning solution on the fan coil while it stays mounted. A chemical overhaul takes the fan coil down and dismantles it for a deeper clean. Each step costs more and takes longer.
Ask the technician which one your unit needs and why. A unit that drips or smells after normal servicing may need a chemical wash; a unit that is very dirty or has not been cleaned in years may need an overhaul.
How often should I service my aircon?
Follow your manufacturer’s manual and any warranty conditions first. Several companies here sell maintenance contracts; Cool-Aire, for example, mentions quarterly scheduling. Heavy daily use, pets and dust all mean more frequent cleaning.
What should I ask before booking?
Ask for the price per unit and whether it includes GST, any call-out or transport fee, the warranty period and what it covers, and whether the technician will report problems before doing extra paid work.
Get gas top-ups and parts quoted separately. If a company recommends replacing a unit, ask for the fault in writing and consider a second opinion.
Frequently asked questions
Does an aircon company need to be based in Woodlands?
No. Technicians come to your home, so what matters is whether the company covers your block, how soon it can come, its price and its warranty. Most firms here serve the whole island.
Which aircon company covers Admiralty and Marsiling?
Billy Aircon lists Admiralty, Marsiling, Woodlands Central, Woodlands South and Innova on its Woodlands page. Cool-Aire has a dedicated Woodlands page. Ask THL, Kaili and JK to confirm they cover your block.
How much is aircon servicing in Woodlands?
Billy Aircon publishes servicing from S$16 per unit (checked 3 October 2026). The other companies here do not publish prices on the pages we checked, so ask for a written quote.
Do aircon servicing companies give a warranty?
Billy Aircon states a 90-day workmanship warranty and Cool-Aire at least 90 days. Ask the others what they offer before you book.
Which company suits a shop or office with a VRV system?
THL HQ Aircon and Kaili Aircon both list VRV systems, and Kaili also lists chillers, ductwork and kitchen ventilation.
