Mini Split & Heat Pump Wiring in Moncton, Dieppe & Riverview

What to Expect

A dedicated 240V circuit sized to the manufacturer's spec sheet, with an outdoor-rated disconnect within sight of the condenser and the whip between indoor and outdoor units. Panel capacity is checked before the job, and exterior penetrations are sealed and protected.

NB Power's heat pump rebates have made ductless mini splits one of the most common additions to homes in Moncton, Dieppe, and Riverview, and the most common thing we find is a panel that's already full, which has to be sorted out before the unit can be connected.

The electrical work is usually the part of a heat pump install that gets scoped last and causes the delay. HVAC quotes often assume power is already available at the outdoor unit; in a lot of Greater Moncton homes it isn’t, and the panel doesn’t have a free double-pole slot to give it. We’d rather find that out during the quote than on install day, so we check the panel and the service capacity before anything is ordered.

Sizing matters more than it might seem. Mini splits draw differently than a straight resistive load. The spec sheet gives a minimum circuit ampacity and a maximum overcurrent protection rating, and those two numbers determine both the wire gauge and the breaker. Undersizing causes nuisance trips in the coldest weather, which is exactly when you need the unit working. Oversizing the breaker is a fire risk. We wire to the manufacturer’s numbers.

Older homes across Moncton’s West End and Sunny Brae, and through Riverview’s earlier subdivisions, frequently run a 100A service that’s already carrying an electric range, a dryer, and a water heater. Adding a heat pump to that can be the load that pushes it over. Sometimes the answer is a panel upgrade; sometimes it’s a load calculation showing the existing service is fine. We do the calculation rather than defaulting to the more expensive recommendation.

If you’re adding multiple heads, or pairing a heat pump with an EV charger down the road, tell us at quoting time. Planning both at once is considerably cheaper than running one circuit now and reopening the same walls in a year.