Key takeaways
- Peak season is when the phone rings most and gets answered least. Call volume roughly doubles in a heatwave while the number of people able to answer stays exactly the same.
- At Perth values it compounds fast. Two ducted enquiries lost in a peak week is more than the cost of fixing the problem for good.
- Perth job values make it worse. A split system install runs $1,250 to $4,725 and a ducted system $8,400 to $23,100 in 2026.[2]
- A missed call is not a delayed job. It is a lost one. Most callers who do not reach a person never ring back, they ring the next name on the list.
- The fix is a 60-second SMS, not a receptionist. Every unanswered call triggers an automatic text from your business number asking what the job is and which suburb.
What is missed call automation for HVAC businesses?
It is not a call centre, and nobody offshore picks up pretending to be your business. In the text build the caller receives a text, replies by text, and books a time. Where the phone needs answering live, we build AI voice triage instead. Your team keeps the customer relationship, and every enquiry lands in ServiceM8 or Simpro as a job rather than evaporating into a missed-call log nobody reads.
Why call volume doubles but your office does not
This is the structural problem with HVAC. The moment demand spikes is the exact moment your capacity to answer the phone collapses, because every person who might answer it is out installing.
| Scenario | Who can answer | Why |
|---|---|---|
| Normal week, office staffed | Usually someone | Staff on other calls, dispatch, parts ordering |
| Peak season, office staffed | Rarely in time | Call volume roughly doubles, headcount does not |
| Crews on site, office empty | Nobody | Every person who might answer is out installing |
| After hours and weekends | Nobody | No cover unless you pay for an answering service |
What a missed enquiry is worth in Perth
Job values are the reason this matters more in HVAC than in most trades. A single missed ducted enquiry is worth more than a full year of automation.
| Job type | Installed price range | Typical |
|---|---|---|
| Split system, 2.5 kW | $1,250 – $2,625 | $1,900 |
| Split system, 5 kW | $1,900 – $3,675 | $2,800 |
| Split system, 7 kW | $2,300 – $4,725 | $3,500 |
| Ducted, whole home | $8,400 – $14,700 | $11,500 |
| Ducted, large or complex | $14,700 – $23,100 | $18,000 |
Perth installed prices including supply and GST, verified July 2026. Costs rose roughly 3.5% over the preceding year.[2] Nationally, air conditioning and heating services is a $13.1bn industry across 7,383 businesses.[1]
It shows up as a quiet week.
What happens in the nine minutes after you do not pick up
A Perth homeowner whose air conditioning has failed in February is not a patient customer. Here is the sequence, and where automation interrupts it.
Without automation
Your tech is in a roof cavity in Balcatta. The office is on another call.
Most callers who do not reach a person never call back.
You never learn this enquiry existed.
Same suburb, same unit, same price. The only difference was who answered.
With missed call text back
Nothing changes on your end. Your tech stays in the roof.
"Sorry we missed you, we're on a job. What's the issue and which suburb?"
"Ducted's blowing warm air, Kingsley." A qualified lead, in writing.
Your office sees a booked job, not a missed call notification.
Answering service, AI receptionist, or missed call text back?
All three claim to solve the same problem and behave very differently. The right answer depends on your call volume and how much you want a stranger speaking for your business.
| Voicemail | Human answering service | AI voice receptionist | Missed call text back | |
|---|---|---|---|---|
| Response time | Whenever you check it | Live, if an operator is free | Instant | Under 60 seconds |
| Works after hours | Technically | At extra cost | Yes | Yes |
| Who speaks to your customer | Nobody | A stranger on a script | A synthetic voice | Your business, by text |
| Customer keeps a written record | No | No | No | Yes, in their SMS thread |
| Handles a tradie mid-job | No | Takes a message | Takes a message | Reply when you're down the ladder |
| Typical Perth cost | Free | Per call or per minute | Monthly per seat | From $999 + $197/mo |
Worth saying plainly: if you run high volume commercial HVAC with a dedicated dispatcher, a human answering service may suit you better. Missed call text back is built for operators whose office is one or two people.
The Perth trade calendar, and why timing decides the outcome
Western Australia has the highest air conditioning reliance in the country, with more than three quarters of households running it.[5] That demand is not spread evenly across the year.
| Period | Phase | What it means for lead capture |
|---|---|---|
| Sep – Nov | Pre-summer build | Households book ahead. The right window to go live, because you are not yet drowning. |
| Dec – Feb | The peak | Call volume doubles. Miss rate hits its ceiling. Worst possible time to be mid-build. |
| Mar – May | Service window | Install volume drops. Good time to reactivate last summer's unconverted quotes. |
| Jun – Aug | Heating demand | Reverse-cycle keeps the phone going. Lower volume, same miss rate. |
Perth logged at least nine days above 40°C in summer 2024–25, second only to the record thirteen in 2021–22.[4] The Bureau of Meteorology's long-range outlook has summer days and nights likely warmer than usual across most of Western Australia.[3]
How to stop losing HVAC jobs to missed calls
Five steps, fourteen days, and you touch none of it.
Map every route an enquiry takes into your business, then count how many go unanswered in a normal week versus a peak week. Most operators have never measured this.
30 minutes · freeYour alphanumeric Sender ID goes on the ACMA SMS Sender ID Register. Longest lead time in the build, so it starts on day one.
Day 1Any unanswered call fires an SMS within 60 seconds. Templates written for HVAC: breakdown, install quote, service and after hours each get different sequences.
Days 2 to 8Captured leads land in your existing job management system with job type, suburb and contact attached.
Days 9 to 12We watch the first fortnight and adjust based on how your customers actually reply. Perth homeowners text differently at 8pm in February than at 10am in June.
Day 14The SMS rules that actually apply to you in Australia
Australian commercial SMS is governed by the Spam Act 2003 and enforced by the Australian Communications and Media Authority. It is a different regime to the one most offshore playbooks are written for, which is why so many setups here are quietly non-compliant.
What actually governs your texts is the Spam Act 2003, enforced by ACMA, with penalties reaching A$3.64 million.[6] Since 1 July 2026, ACMA requires alphanumeric Sender IDs to be registered.
| Requirement | What it means in practice |
|---|---|
| Consent | Express or inferred consent for every commercial message, with a producible audit trail |
| Identification | Your legal business name or ABN in every message |
| Unsubscribe | Working opt-out at no cost beyond standard SMS charge, processed within five business days |
| Sender ID Register | Alphanumeric Sender IDs registered with ACMA (required since 1 July 2026) |
| Record keeping | Consent logs, opt-out logs and message history retained |
Frequently asked questions
How many calls do HVAC businesses miss?
What is an HVAC answering service, and do I need one in Perth?
When is peak season for air conditioning in Perth?
How much does air conditioning installation cost in Perth?
Does it work with ServiceM8 or Simpro?
Is automated SMS legal for Australian businesses?
How long does setup take?
What if my busy season is already underway?
Sources
Every figure on this page traces to one of these. Last verified 15 August 2026.
- IBISWorld — Air Conditioning and Heating Services in Australia, market size 2026. $13.1bn industry, 7,383 businesses.
- What's The Damage — Air Conditioning Cost Perth 2026, and Otter Air split system pricing.
- Bureau of Meteorology — Australian long-range forecasts.
- Bureau of Meteorology — Perth in Summer 2025, and days above 40°C in Perth by year.
- Finder — Australia's air conditioning usage statistics. WA household penetration.
- ACMA and the Spam Act 2003 — DLA Piper, electronic marketing in Australia, and SMS compliance and the Sender ID Register.
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