Is it cheaper to use a window unit other 2 rooftops ?
Would it be cheaper go with a window unit or just use the two roof top units already on unit?
Forum Discussion
Good question.
Firstly, if you have two 15,000btu units that is the equivalent to a 2.5 ton window unit. A 2.5 ton window unit will be a 220V model. Do you have 220V available? I believe a 15,000btu is the largest available window unit powered on 110V.
Putting that aside, a new, efficient 15,000 btu, 110V window unit (example) draws 12A. I believe that is the rating for an equivalent 15,000btu rooftop unit but couldn't find that reference.
Can anyone here come back with actual measured rooftop current measurements?
I'm going to say no, a window unit would not be a big enough electric bill savings to make it worth your effort.
The only way I see a window unit saving you on the EBill is installing a 12,000btu in the living room and turning off the bedroom ac (assuming floorplan). You may even consider sleeping in the living room with just the 12K running. There are small window units for ~$200 so it may take a year to recover this.
Firstly, if you have two 15,000btu units that is the equivalent to a 2.5 ton window unit. A 2.5 ton window unit will be a 220V model. Do you have 220V available? I believe a 15,000btu is the largest available window unit powered on 110V.
Putting that aside, a new, efficient 15,000 btu, 110V window unit (example) draws 12A. I believe that is the rating for an equivalent 15,000btu rooftop unit but couldn't find that reference.
Can anyone here come back with actual measured rooftop current measurements?
I'm going to say no, a window unit would not be a big enough electric bill savings to make it worth your effort.
The only way I see a window unit saving you on the EBill is installing a 12,000btu in the living room and turning off the bedroom ac (assuming floorplan). You may even consider sleeping in the living room with just the 12K running. There are small window units for ~$200 so it may take a year to recover this.
