Browse Forums Heating, Cooling & Insulation Re: Evaporative cooling vs Split system 22Oct 30, 2017 5:26 pm Our build thread viewtopic.php?f=31&t=82369&p=1525857&hilit=fairhaven#p1525857 Re: Evaporative cooling vs Split system 34Jun 22, 2018 1:30 am ddarroch AJW Only issue with Canberra with reverse cycle is heating the heating effect is marginal on the very cold winter mornings. The units can spend more time defrosting than they do heating. Our struggles below about -5. Great strides have been made in heat pump technology (of which reverse cycle air conditioning is a type) over recent years. Many highly energy efficient (Passive Haus) houses in North America, even in frigid Canada, use mini-splits as their only heat sources. These systems can operate efficiently far, far below zero C. Yes, due to the way they work (extracting heat from the ambient air), heat pump efficiency will decrease as the ambient temperature decreases. But nowhere near as much as was the case only a few years ago. This is because older systems required an extremely energy inefficient electric element to defrost their coils, modern systems do not. Though not all systems are created equal, only some are optimised for low temperature use (like Mitsubishi Hyper Heat). So it's worth doing your research before installing an AC system for heating in cold climates like Canberra or the alpine. The electric elements were used in the discharge air stream when the system cycled into defrost to defrost the coil so as to not blow cold air into the conditioned space as defrost mode essentially switches to cooling. You're confusing air conditioning with low temp refrigeration which uses electric elements for periodic defrost cycles. Move your linen into laundry and access laundry from your present linen space 1 8001 Once you know the basics, the rest is easy. Read my post in the thread linked below. viewtopic.php?p=1919271#p1919271 2 19497 It's all about wireless, self install now. The cost/benefit of wired setups for the house are no longer what they used to be. Lots of wireless options. Eufy, Arlo and… 2 9780 |