QUESTION: Hey Dr Zac, over winter I used to be cranking up the heater, however somebody at work talked about these reverse cycle heaters/air conditioners, particularly older ones, can unfold micro organism like legionella. We even have a fuel heater within the kitchen, and he stated that may emit carbon monoxide. Is that true? With summer season developing – ought to I cease utilizing our reverse cycle airconditioning. What ought to I exploit as an alternative!? Melbourne can get putrid through the scorching months. What’s the most secure approach to keep heat and funky with out risking my well being? – Carla, 42, Dandenong VIC
ANSWER: Expensive Carla, thanks to your query. Melbourne’s four-seasons-in-a-day local weather means our heaters and airconditioners work extra time however do they put our well being in danger? Let’s clear it up.
Air-conditioners and legionella
Legionella is the micro organism behind Legionnaires’ illness, a extreme pneumonia. It thrives in stagnant heat water that will get dispersed as a mist, which is why outbreaks are linked to cooling towers, spas and fountains. Your reverse-cycle cut up system doesn’t retailer water, so it isn’t a breeding floor. The principle threat at house is mud, mildew and allergens in soiled filters, which may flare up bronchial asthma or hay fever. Common cleansing fixes this.
Fuel heaters and indoor air high quality
Fuel is a distinct story. Unflued or poorly maintained heaters can launch carbon monoxide, which is a colourless, odorless fuel that at excessive ranges will be lethal. Even at decrease ranges, long-term publicity is dangerous. Fuel home equipment additionally produce nitrogen dioxide, which analysis has repeatedly linked to bronchial asthma flares in youngsters and lung irritation in adults. Well being authorities and peer-reviewed research each level to this as a measurable threat.
The excellent news: a correctly flued and serviced heater, in a ventilated room, is far safer. But when yours is previous, unflued, or hasn’t been checked in years, get it inspected. And a carbon monoxide alarm is a great funding.
Easy methods to keep protected
• Stick to reverse-cycle airconditioning. It’s environment friendly, protected and low-pollution when serviced.
• Retire unflued or very previous fuel heaters.
• Set up a carbon monoxide alarm.
• Ventilate when utilizing fuel home equipment.
• Insulate and draught-proof to scale back how arduous your methods have to work.
Carla, this implies you possibly can maintain utilizing your reverse-cycle with out worrying about legionella. Focus in your fuel heater as a result of that’s the place the actual proof factors to threat.
Warmly (or maintain cool) – Dr Zac!
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