Matching the electrical outlet is equally as important as making sure the new unit will slide into an existing wall sleeve. There are 3 power cords available, 15 Amp, 20 Amp, 30 Amp. Each cord has a different plug that will only fit into a matching wall outlet. Your existing PTAC unit chassis should have a data plate with electrical information. It will give the actual Amp draw, and the recommended electrical circuit size. Don’t stop there. If your existing unit says it recommends a 20 amp circuit, look in your circuit breaker box to see what size breaker actually serves the unit. Don’t stop there either. Triple check the circuit size by using the chart below to find your existing electrical outlet size.