Browse Forums Heating, Cooling & Insulation Re: Changing from cooling only to reverse cycle 3Mar 24, 2011 3:29 pm 77lk1 Neil first check the brand of existing unit and google for info. I think you may need to change existing duct. Usually duct system must be designed for Dual Cycle because zoning is required to achieve the desired cooling/ heating performance. Hmm - thanks for that. I will find out the existing model although I don't think it is one of the big names, so was looking to upgrade it at the same time. I guess i'll have to call in a local air con installer and get some quotes. Cheers Neil Re: Changing from cooling only to reverse cycle 4Mar 25, 2011 9:33 pm Reverse cycle duct sizing is irrelevant as it is one system designed to both heat and cool. That is the case with gas heating and add-on refrigerated cooling. If the system is 20 years old I would say it is a complete rip out and start again - the ductwork insulation will have probably fallen off or certainly diminished in performance and the efficiencies in todays sytems would save a fortune in running costs You get what you pay for! Re: Changing from cooling only to reverse cycle 5Mar 28, 2011 8:08 am MagicMuppetMan Reverse cycle duct sizing is irrelevant as it is one system designed to both heat and cool. That is the case with gas heating and add-on refrigerated cooling. If the system is 20 years old I would say it is a complete rip out and start again - the ductwork insulation will have probably fallen off or certainly diminished in performance and the efficiencies in todays sytems would save a fortune in running costs Thanks! - It was certainly one of the options I was thinking about. Anyway, I will get a couple of quotes and opinions from some local installers. Cheers Neil Hi All, Our current 16 year old ducted gas heating is broken and needs an urgent replacement and appreciate any advise from the industry experts to make a decision for… 0 4021 How much are you ahead in payments compared to where the build is at? Have you fully drawn down the loan? 5 12393 Hi All, I'm new here! I'm in a block of 4 apartments (Waverley council) and looking to change a window to a sliding door. The window faces an enclosed garden (with a… 0 5848 |