Hey guys, I have an investment property (4 brm house) in Arana Hills, QLD & the current tenant has now been in there for about 10 months (12 month lease - due to expire in March). She has recently emailed my property manager stating that her power bill was higher than expected and assumed this was because of the air conditioner units in the lounge room & kitchen - so asked whether I'd consider having these units removed and replaced with one newer split system unit. I asked for some photos of the current units and it looks like they are fairly old National Reverse Cycle wall units (unit number CW-120AH) with dials for fan strength and thermostat. Both times I've had to rent out this property, it has taken a while to secure a tenant, and required some rent reductions, which makes me want to keep the current tenant happy in the hope of her staying put - but at the same time, I'm conscious of the fact that it can be quite expensive to replace and install new AC units, especially when the current ones are still working ok (if a bit inefficiently due to outdated technology). Therefore just wanted to see if anyone has advice around this or experience? One idea I was thinking of is that I could potentially offer to replace the air con units if the tenant agrees to sign a new 12 month lease at a slightly higher rental amount (say +$10 per week or similar) in exchange? Thanks in advance!