With most banks offering close to 0% home loans for energy efficiency, double glazing can look attractive. If you do not own a new home, the cost benefit might be stacked in your favour.
How much warmer?
Surprisingly warmer, eight to ten degrees if the house is insulated. And a still noticeable four to six degrees might be possible in older homes. This also means lower energy bills as it becomes easier to heat a home. Less condensation is not really a feature of this solution. Best to investigate the likes DVS or HRV for that.
So how much?
This type of solutions can be done in stages. Which can help minimise the disruption to your lifestyle but also your wallet. It is common for this type of solution to cost around $20,000 – $25,000 for a whole house, obviously some factors can change the costs upwards. Obviously getting a onsite quote would be a smart way forward.
Depending on your bank, there might be a low interest home loan available for using towards saving energy. If you have not used it all for a electric car yet.