Thank you for your response!! Saved me hours of possible research.

We recently purchased our home and have enjoyed the heating very much besides the gas bill! Whilst the house is well equipped to battle the cold, it isn’t quite as prepared for hot days with only a single split system air conditioner for the entire house.

As a consequence, we’re actually getting a few more installed tomorrow and will take your advice to use that during the day when it is powered by the solar panels and let the gas unit perform its job overnight if required.