风冷气服务Kaze Aircon Services

Air-con servicing, 60 technicians · Singapore · Singapore

Case study · Technical SEO · 5 months

A JavaScript booking app was hiding Singapore's busiest aircon servicer from Google

A client-rendered single-page booking site meant Google saw almost empty pages, so service and estate pages never indexed.

请到柜台Now serving

Indexed pagescounter 05

●NOW SERVINGA01 fixed · first HTML now carries 14 KB of content
●NOW SERVINGA02 fixed · 46 estates on real URLs
●NOW SERVINGA03 fixed · 2,640 slot URLs out of the crawl
●NOW SERVINGA04 fixed · mobile LCP 1.8 s
●NOW SERVINGA05 fixed · prices readable as text
●NOW SERVINGA06 fixed · one phone format everywhere
●NOW SERVINGA01 fixed · first HTML now carries 14 KB of content
●NOW SERVINGA02 fixed · 46 estates on real URLs
●NOW SERVINGA03 fixed · 2,640 slot URLs out of the crawl
●NOW SERVINGA04 fixed · mobile LCP 1.8 s
●NOW SERVINGA05 fixed · prices readable as text
●NOW SERVINGA06 fixed · one phone format everywhere

01问题The challenge

The busiest counter in Singapore, and Google could not see the queue.

A client-rendered single-page booking site meant Google saw almost empty pages, so service and estate pages never indexed.

Kaze Aircon Services runs 60 technicians across the island and takes most bookings online. The site was a single-page app: lovely to use, but every service and estate page was assembled in the browser. Googlebot fetched each URL, found an empty shell and moved on. Of roughly 460 pages a customer could reach, 38 were indexed.

The work was never about more content. It was about letting Google read what was already there.

What Googlebot got

<html>
 <head>
  <title>Kaze Aircon</title>
 </head>
 <body>
  <div id="app"></div>
  <script src="/main.js">
 </body>
</html>

1.1 KB. No services, no prices, no estates.

What customers got

General servicing · $30/unit
Chemical wash · $60/unit
Gas top-up · from $50
46 estates, same-week slots

Rendered after 3 API calls and 1.4 MB of JavaScript.

02诊断Audit & diagnosis

Seven tickets in the queue, numbered by severity.

A01Critical
Rendering
Googlebot received a 1.1 KB shell
The first HTML response was a single empty <div id="app">. Service copy, prices and estate names arrived after three API calls and a 1.4 MB bundle, so most pages were queued for rendering and dropped as soft-empty.
A02Critical
Rendering
Hash-routed URLs
Estate pages lived at /#/estates/tampines. Google ignores the fragment, so 46 estate pages collapsed into one URL: the homepage.
A03High
Index bloat
2,640 booking-slot URLs
Every calendar slot (?date=…&slot=…) was a crawlable link. Googlebot spent most of its visits on empty calendars instead of service pages.
A04High
Core Web Vitals
Mobile LCP 5.2 s, INP 410 ms
The hero image was requested by JavaScript after hydration; a chat widget and three analytics tags blocked the main thread on mid-range Android phones.
A05Medium
Schema
No structured data, prices in images
No HVACBusiness, Service or Offer markup. The price list was a PNG, so 'chemical wash price' queries had nothing to match.
A06Medium
Local
Profile linked to the booking subdomain
The Business Profile pointed at book.kaze… with a different phone format from three directories, splitting local signals.
A07Medium
Content
Swapped-name estate templates
The estate pages that did render were identical apart from the estate name: no block types, travel times or typical unit brands.

03策略The strategy

Four stalls, one queue.

Built on our Signal plan (Technical SEO). Fix what Google receives first, then make it fast, then stop it wasting visits, then describe every page in machine-readable terms.

Stall 01渲染

JavaScript rendering

Service, price and estate pages pre-rendered at build time, so the first byte carries the content.

Moved routes from hash to real paths with 301s
Static generation for 9 services × 46 estates
Booking calendar kept client-side, behind one button

Stall 02速度

Core Web Vitals

The page paints before the booking app wakes up.

Hero image preloaded and served as AVIF
Bundle split: 1.4 MB → 380 KB on first load
Chat and tags deferred until interaction

Stall 03清理

Index bloat

Crawl budget returned to pages a customer could actually land on.

Slot and date parameters made non-crawlable
Canonicals and noindex on 2,640 calendar URLs
Sitemaps split by service, estate and guide

Stall 04标记

Schema markup

Machine-readable facts for every service and area served.

HVACBusiness with areaServed per estate
Service + Offer with per-unit prices as text
FAQ markup on wash, gas top-up and leak pages

04进度Month by month

5 months on the board.

M1
诊断
Raw vs rendered
Crawled the site twice, with and without JavaScript, and diffed every page. Mapped 2,640 slot URLs and 46 hash-routed estates.
Indexed
61
M2
渲染
Pre-rendering ships
Real URLs with 301s from the old fragments. Service and estate pages now arrive as complete HTML; the booking app hydrates only the calendar.
Indexed
142
M3
清理
Crawl budget back
Calendar parameters blocked and canonicalised. Googlebot's daily fetches shift from empty slots to service pages within three weeks.
Indexed
268
M4
速度
Speed and schema
Bundle split, hero preloaded, tags deferred. HVACBusiness, Service and Offer markup on every page; price list rebuilt as text.
Indexed
362
M5
巩固
Estate hub
Estate pages rewritten with block types and travel times, linked from a Singapore coverage hub. Profile and directories aligned.
Indexed
410

05成果Results

Every number, called to the counter.

叫号 · Now serving · ticket 001

Organic sessions

001 Organic sessions: +147%
002 Online bookings from organic: +92%
003 LCP (mobile): 5.2s → 1.8s

Modelled scenario for a fictional business — not a client result. Rankings and traffic are never guaranteed; see our Terms.

Indexed pages · one LED ≈ 20 pages

Organic sessions per month

Online bookings from organic

LCP (mobile), 75th percentile

Green zone: under 2.5 s counts as good.

Before · month 0

kazeaircon.sg › #

Kaze Aircon | Loading…

You need to enable JavaScript to run this app.

After · month 5

kazeaircon.sg › services › chemical-wash

Aircon Chemical Wash Singapore · from $60/unit | Kaze

Same-week chemical wash for wall-mounted and cassette units across 46 estates. Gas top-up, leak repair and general servicing, priced per unit.

Servicing in TampinesServicing in Jurong WestServicing in BedokServicing in Punggol

Rankings board

Modelled Google positions in Singapore, before the work and at month 5.

Modelled Google positions before and after, month 5
Query	Monthly searches	Before	Month 5
aircon servicing singaporeService	9,900	not indexed	#4
aircon chemical washService	4,400	41	#3
aircon gas top up priceService	1,900	not indexed	#2
aircon water leakingService	2,400	67	#5
aircon general servicing priceService	1,300	28	#1
aircon servicing tampinesEstate	880	not indexed	#1
aircon servicing jurong westEstate	720	not indexed	#2
aircon servicing bedokEstate	590	not indexed	#3
aircon repair woodlandsEstate	480	not indexed	#2
condo aircon servicing punggolEstate	320	not indexed	#1

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← All case studies

A JavaScript booking app was hiding Singapore's busiest aircon servicer from Google

Issues fixed

The busiest counter in Singapore, and Google could not see the queue.

Seven tickets in the queue, numbered by severity.

Googlebot received a 1.1 KB shell

Hash-routed URLs

2,640 booking-slot URLs

Mobile LCP 5.2 s, INP 410 ms

No structured data, prices in images

Profile linked to the booking subdomain

Swapped-name estate templates

Four stalls, one queue.

JavaScript rendering

Core Web Vitals

Index bloat

Schema markup

5 months on the board.

Raw vs rendered

Pre-rendering ships

Crawl budget back

Speed and schema

Estate hub

Every number, called to the counter.

Rankings board

Get a plan like this