Electrical panel and circuit needs for a conversion
Why electrical capacity can change the price of a swamp cooler conversion.
Quick answer: Refrigerated air typically needs a dedicated 240-volt circuit, sized to the equipment nameplate, plus a disconnect near the outdoor unit. Some older homes with swamp coolers also need a panel upgrade. The contractor checks your panel during the in-home assessment.
Why a swamp cooler home can differ
Swamp coolers use a small fan motor and pump, so older homes built around them may have modest electrical service. A central air system with a compressor draws more power and normally needs its own circuit.
What gets checked
- Panel amperage and available breaker spaces
- Condition and age of the panel and wiring
- Distance from the panel to the outdoor unit and air handler
- Disconnect and grounding requirements
- Permit and inspection requirements for the electrical work
Frequently asked questions
Do I need a new electrical panel to convert to central air?
Not always. It depends on your panel's capacity and what else it powers. The contractor checks this during the assessment.
What kind of circuit does central air need?
Typically a dedicated 240-volt circuit sized to the equipment nameplate, plus a disconnect near the outdoor unit. The contractor follows the nameplate and code.
Who does the electrical work?
Electrical work is done by appropriately licensed people. Ask whether your contractor uses their own licensed electrician and whether the cost is in the quote.