If you want to save on lighting, you replace halogen and fluorescent bulbs with LED.
If you want to save on air conditioning, you have the fridge or air conditioner regassed with a more efficient gas blend.
Now you may be saying you have solar and battery.
Solar is useless on a rainy day.
Battery is great, even better if you have spare capacity to export to the grid during peak times, or save for use further into the night.
Power prices during peak hour are currently about 40c/KWh and will only continue to rise. You'd be mad not to want to drastically reduce your heating / cooling costs.
The air conditioning refrigerant gas industry and energy goons have done a good job so far in censoring and discrediting these alternative refrigerant gases.
Your air conditioning technician is probably stuck in their old ways and doesn't know how to use these alternative gases.
This site is for raising awareness and giving technicians a crash course.
Hydrocarbon air conditioning isn't the only interesting thing on this website. I have an introduction to other innovations, and information on the meaning of life. Being privileged with such information, it would be wrong not to share it.