Lennox specialists

Lennox Air Conditioning Service & Installation

Lennox is best known in Australia for ducted and rooftop air conditioning, on homes and on commercial buildings. Our licensed technicians service, clean, repair and install Lennox air conditioners, with a fixed price agreed before any work starts.

Licensed, ARCtick-certified technicians
Lennox ducted, split and rooftop systems
Fixed price before we start

Every Lennox system

The whole Lennox range, looked after

Whether it’s a ducted system at home or a rooftop unit on a commercial building, our technicians know how Lennox systems are built and what tends to go wrong with them. These are the Lennox systems we work on most.

Ducted

Lennox ducted air conditioning

Whole-home ducted Lennox systems, including zoned installations, serviced, cleaned and repaired.

Split

Lennox split systems

Wall-mounted Lennox split system air conditioners in bedrooms, living areas and small offices.

Rooftop

Rooftop packaged units

Lennox rooftop units on shops, offices and warehouses, serviced on a schedule that suits the site.

Add-on

Add-on cooling

Lennox cooling coils added to a gas ducted heater and sharing the same ducts and outlets.

Commercial

Commercial maintenance

Regular filter changes, coil cleaning and checks for businesses that rely on their air conditioning.

Controls

Thermostats and zoning

Fault-finding Lennox thermostats, controllers and zone systems that have stopped responding.

Older models

Older Lennox systems

Lennox systems installed ten, twenty or more years ago. We repair them where it's worth it and tell you honestly when it isn't.

Install

New Lennox installs

Sizing and installing new Lennox air conditioning, or replacing an old system on the existing ducts.

Common Lennox faults

Lennox playing up? We'll find out why.

Most Lennox problems start small: a fault on the thermostat, a zone that won’t cool, a rooftop unit tripping out. These are the faults we fix most often, and what usually causes them.

Fault codes or tripping out

A fault on the thermostat, or a unit that trips its breaker, has a cause worth finding. We test the electrics, sensors and compressor and fix what’s wrong.

Not cooling or heating properly

Weak airflow or lukewarm air usually comes down to blocked filters, dirty coils, low refrigerant or a failing part. We test the system and tell you exactly what’s wrong.

Water leaking inside

Water marks on the ceiling under a ducted unit are almost always a blocked or badly graded drain line. We clear it, check the fall and stop it happening again.

Zones or thermostat not responding

A blank thermostat or zones that won’t open usually trace back to wiring, a zone motor or a control board. We find which and fix it.

Not sure what's wrong? Book a check and we'll tell you.

When to service

Service your Lennox before summer.before winter.

The best time for a Lennox service is just before you need the system most. A check a few weeks ahead catches a tired part, a blocked drain or a zone that isn’t opening before the first heatwave or cold snap, when everyone is calling at once.

Each season’s service focuses on the mode you’re about to rely on, and you get a written report at the end.

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September – November

Pre-summer Lennox service

Get your split or ducted Lennox cooling properly before the first hot week.

Fixed price quoted before we start

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March – May

Pre-winter Lennox service

Make sure heating mode, defrost and airflow are working before the cold sets in.

Fixed price quoted before we start

Lennox FAQs

Lennox Air Conditioning FAQs

Answers to the questions Lennox owners ask us most, from what an installation involves to whether an old system is worth repairing. Can’t see yours? Call us on 1300 730 896.

Real Answers

Straight from our experts

Trusted Service

Licensed, insured and local

Here to Help

Get the clarity you need

What does a Lennox air conditioning installation involve?

We measure the home or building, work out the capacity needed, and install the unit, ducts, outlets and controls. You get a fixed quote before any work starts.

How often should a Lennox air conditioner be serviced?

Once a year for most homes, ideally just before summer or winter. In between, clean the filters yourself every few weeks when the system is in heavy use.

Does servicing matter for my Lennox warranty?

Keeping the system maintained is part of looking after your warranty. Every visit comes with a written report, so keep it with your purchase paperwork in case you ever need to make a claim.

Do you service Lennox rooftop units on commercial buildings?

Yes. We service and repair Lennox rooftop packaged units, and can set up regular maintenance visits so filters and coils are done on schedule.

How long does a Lennox service take?

A ducted home system takes a little longer than a split, because we also check the ducts, zones and controls. Rooftop units depend on size and access.

Which Lennox systems do you work on?

Ducted, split and add-on cooling systems in homes, and rooftop packaged units on commercial buildings.

Should I repair or replace an old Lennox system?

If the system is under about ten years old and the fault is minor, a repair is usually worth it. For older systems facing a big repair, we’ll give you both prices so you can decide.

Are you an official Lennox service agent?

No. All Good is an independent heating and cooling company and isn’t affiliated with Lennox. Our licensed technicians service, repair and install Lennox systems across the range.

Book a Lennox service

Book your Lennox pre‑summer service.pre‑winter service.

Tell us what’s happening with your Lennox system and we’ll help you work out the right next step. From repairs and servicing to maintenance and new Lennox installations, our licensed technicians are ready to help.

Send your details

Takes about a minute. Tell us about your system and what you need.

We call to confirm

We ring to lock in a time that suits you. No automated booking maze.

Serviced, with a report

Your technician cleans, tests and tunes the system, then leaves a service report.

Get started

Request a quote.

Fast, friendly and obligation-free. Tell us a little about your system and a local technician will be in touch.