“Booked a pre-winter service on our old ducted heater. They did a carbon monoxide test, cleaned the burner and it fires up first go now.”
Verified
Dandenong’s post-war homes have often been extended or subdivided, leaving ducted heaters stretched and flues overlooked. FreshDuct sets them right — carbon monoxide test, flue and venting check, burner tune and airflow balanced across the whole house.
Added a room the heater never reaches? An airflow and flue check usually sorts it.
Dandenong is a large, hardworking south-eastern centre with a deeply multicultural community, ringed by post-war brick homes, newer infill and a busy industrial and retail core. A lot of its houses have been added to over the decades — a rear room, a granny flat, a converted garage — and the ducted heater has often had to stretch to cover the extra space.
When heating is extended without rebalancing the ducts, the far rooms stay cold and the unit works harder than it should. Just as important, older flue and venting can be overlooked. We tune the burner, inspect the heat exchanger, check the flue and venting and run a carbon monoxide test, so a Dandenong home is warm right through and safely vented.
The things we check first on a Dandenong ducted gas heater — based on the local homes, systems and conditions.
On older and altered homes the flue and venting can be neglected. We check that combustion gases vent properly to the outside rather than spilling back into the house.
Many Dandenong houses have added rooms the heater was never sized for. We check the fan and vents so the warm air reaches the extensions, not just the original core.
However the home has been altered, the safety check stays the same. Every Dandenong service includes a heat-exchanger inspection and a negative-pressure CO spillage test.
Real photos from FreshDuct ducted gas heater service, carbon monoxide testing and duct work. We document every service with clear before-and-after photos.



One local team for the whole system — from an annual ducted heater service and carbon monoxide test to duct cleaning, cooling and split systems.

A full annual service and tune of your ducted gas heater — burner, heat exchanger, thermostat and airflow all checked.
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A negative-pressure CO spillage test on the gas heater — the critical safety check for a cracked or corroded heat exchanger.
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Cleaning the ducts and vents that carry warm air through your home for cleaner, healthier heating.
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Return-air filter, supply vents and airflow checked so the heater runs efficiently and warms every room evenly.
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Servicing the evaporative cooler that often shares your home’s ductwork, ready for summer.
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Cleaning and sanitising wall-mounted split systems for cleaner, more efficient heating and cooling.
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A Dandenong home that has grown over the years asks a lot of its original ducted heater. We tune the burner, inspect the heat exchanger, check the flue and venting and run a carbon monoxide test, then look at whether the ducting still suits the extended layout.
Where an added room never warms up, it is usually ducting that was never rebalanced for the extra floor space rather than a fault in the heater. We correct the airflow, tune the unit and tell you honestly whether the current heater can cover the larger home.
FreshDuct services ducted gas heaters across Dandenong, Dandenong North and Noble Park 7 days a week, and we work nearby in Clayton, Oakleigh, Frankston and Ringwood.
From the post-war streets near the centre to the extended and subdivided homes around the edges, we can usually offer a prompt appointment and prioritise a heater that has stopped firing before a cold spell.
A thorough, documented annual service — every component checked and a carbon monoxide test done before the cold sets in.
We check the whole ducted gas heater — burner, heat exchanger, gas valve, thermocouple, ignition and wiring.
A negative-pressure CO spillage test to make sure the heat exchanger is sound and nothing is venting into your home.
Burner, injectors and ignition cleaned and adjusted so the heater lights reliably and burns cleanly.
Return-air filter and supply vents checked and cleared so warm air flows freely to every room.
Thermostat, sensors and controls tested so the heater cycles correctly and holds the temperature you set.
A clear service report with photos and honest advice on whether to service or replace.
Verified 5-star reviews from across FreshDuct’s heating, cooling and duct services.
“Booked a pre-winter service on our old ducted heater. They did a carbon monoxide test, cleaned the burner and it fires up first go now.”
Verified
“Turned up on time, showed me the heat exchanger and explained the CO test properly. No scare tactics, just honest advice.”
Verified
“Our floor-ducted heater was noisy and slow to warm up. FreshDuct serviced it, replaced the filter and it heats the whole house again.”
Verified
“Great communication and a tidy job. They checked the thermostat and airflow and sorted a room that was never getting warm.”
Verified
“Honest team — they told me the unit was worth servicing rather than replacing and saved me a lot of money.”
Verified
“Quick, professional and clean. The report and photos showed exactly what they checked on the gas heater.”
Verified
We cover Dandenong and the surrounding suburbs. Explore nearby areas and related FreshDuct services.
Sometimes, but only if the ducting is rebalanced for the extra space. A rear room or converted garage added without adjusting the ducts often stays cold. We check the airflow and vents, tune the heater and advise honestly whether the current unit is up to the larger home.
Because a blocked or poorly vented flue can push combustion gases, including carbon monoxide, back into the house. On older and altered Dandenong homes the venting is easy to overlook, so we check it as part of the service alongside the CO spillage test.
Yes. FreshDuct services, tunes and carbon-monoxide tests ducted gas heaters across Dandenong and the surrounding south-east, 7 days a week. Call 04 3191 8137 or request a free quote.
A standard annual service and carbon monoxide test is a fixed, affordable price; the cost only changes if the heater needs a part such as a thermocouple, igniter, filter or fan component — and we quote those clearly before we fit anything. Call 04 3191 8137 for pricing.
Every two years at a minimum, and ideally once a year before winter. An annual service in autumn means the burner, heat exchanger and controls are checked and a carbon monoxide test is done before you rely on the heater through the cold months.
Yes. Every ducted gas heater service we do includes a carbon monoxide safety check — we test for CO spillage and inspect the heat exchanger for cracks, because a faulty exchanger can leak carbon monoxide into the home. It is the single most important reason to service a gas heater.
Annual service and tune, carbon monoxide safety test, burner & heat-exchanger check, filter and airflow — a clean, documented service with photo proof. Available 7 days.
Tell us about your ducted heater and home — we respond fast, 7 days.