Since it’s not a traditional air conditioner, you won’t have coils full of harmful chemicals around. While most air conditioners can really eat up your electricity, the evaporative system in this model uses a lot less energy overall. Your premises might be gas-only or electric-only, so you’ll be after a single-energy tariff. But, signing up for energy separately could help you save money, if you’re willing to compare two single-energy tariffs against a dual fuel tariff.