What electrical work is needed to convert oil heat to electric heat pump in New Brunswick?

Electrical Work for Converting Oil Heat to Electric Heat Pump in New Brunswick

Converting from oil to electric heat pump heating is one of the most popular home renovations in New Brunswick right now, driven by volatile oil prices (which hit over $1.80/litre in recent years), available government rebates, and the proven performance of modern cold-climate heat pumps in Maritime winters. The electrical side of this conversion involves more than just plugging in a new unit — your entire electrical system may need upgrading to handle the new load.

Electrical Requirements for Heat Pump Systems

Mini-split (ductless) heat pumps are the most common choice in New Brunswick. Each outdoor unit requires a dedicated electrical circuit:

| Unit Size | Circuit Requirement | Breaker Size | Wire Gauge |
|-----------|-------------------|--------------|------------|
| 9,000 BTU (small room) | 240V, 15A dedicated | 15A double-pole | 14/2 NMD90 |
| 12,000 BTU (standard room) | 240V, 15A dedicated | 15A double-pole | 14/2 NMD90 |
| 18,000 BTU (large room/zone) | 240V, 20A dedicated | 20A double-pole | 12/2 NMD90 |
| 24,000 BTU (multi-zone outdoor) | 240V, 30A dedicated | 30A double-pole | 10/2 NMD90 |
| 36,000 BTU (whole home) | 240V, 40A dedicated | 40A double-pole | 8/3 NMD90 |

Each indoor head unit also needs a standard 120V outlet nearby (within 1 metre) for the control board, though many models include this in the line set wiring.

Ducted central heat pumps require a 240V, 40-60A dedicated circuit depending on the unit capacity. If you're replacing an oil furnace but keeping the existing ductwork, the new air handler replaces the furnace and needs its own high-amperage circuit.

Panel Capacity — The Most Common Obstacle

This is where most New Brunswick oil-to-heat-pump conversions run into their first major electrical cost. Many homes that were heated with oil have 100-amp electrical services because the oil furnace only needed a small circuit for the blower motor and ignition system. The rest of the home's electrical load (lights, outlets, appliances) fit comfortably within 100 amps when heating wasn't drawing from the panel.

Adding heat pump circuits changes the math dramatically:

• A single 24,000 BTU mini-split draws 30 amps at 240V
• A whole-home multi-zone system with 3 outdoor units can require 60-90 amps of panel capacity
• Add an electric backup heating strip (10-15 kW, required for -25°C and below days) and you need another 40-60 amps

For most conversions, a 200-amp service upgrade is necessary. Cost in New Brunswick: $2,500-$4,500, which includes:

• New 200-amp meter base and weather head (NB Power coordinates the disconnect/reconnect)
• New 200-amp main breaker panel (40-42 circuit spaces)
• Moving circuits from old panel to new panel
• TSANB permit and inspection
• NB Power reconnection scheduling (typically 3-5 business day wait)

Complete Electrical Cost Breakdown

Scenario 1: Single-zone mini-split (1 outdoor + 1 indoor unit)
This covers one main living area — common as a supplementary system keeping baseboard or oil for the rest of the house.

• Dedicated 240V circuit run (30-50 feet typical): $300-$500
• 120V outlet for indoor unit (if not existing): $150-$250
• Disconnect box at outdoor unit (CEC requirement): $150-$250
• Permit and inspection: $75-$100
• Total electrical cost: $675-$1,100

Scenario 2: Multi-zone mini-split (1 outdoor + 3-4 indoor units) Covers most of the living space — typical for a 1,200-1,800 sq ft New Brunswick bungalow or split-level.

• Panel upgrade to 200A (if currently 100A): $2,500-$4,500
• Dedicated 240V circuit for outdoor unit: $300-$500
• Disconnect box: $150-$250
• Permit and inspection: $100-$150
• Total electrical cost: $3,050-$5,400

Scenario 3: Whole-home ducted heat pump replacing oil furnace Complete elimination of the oil heating system.

• Panel upgrade to 200A: $2,500-$4,500
• 240V, 50-60A circuit for outdoor compressor: $400-$700
• 240V circuit for backup electric heating strips: $300-$500
• Disconnect box: $150-$250
• Removal of oil furnace electrical connections: $100-$200
• Removal of oil tank electrical (pump, alarm): $75-$150
• Permit and inspection: $100-$150
• Total electrical cost: $3,625-$6,450

Government Rebates and Incentives

New Brunswick homeowners converting from oil to heat pump may qualify for significant rebates that help offset both the HVAC and electrical costs:

• Canada Greener Homes Grant — Up to $5,000 for qualifying heat pump installations (requires pre and post energy audits at approximately $600 total)
• NB Power Total Home Energy Savings Program — Additional rebates for qualifying heat pump installations, amounts vary by program year
• Oil to Heat Pump Affordability Program (OHPA) — Federal program specifically for oil-heated homes, providing up to $10,000-$15,000 for qualifying households

These rebates typically cover the heat pump equipment and installation but may not directly cover the electrical service upgrade. However, the electrical work is a necessary part of the project and some programs allow it as an eligible expense — ask your energy advisor during the pre-retrofit audit.

Timeline and Coordination

A typical oil-to-heat-pump conversion in New Brunswick follows this sequence:

Energy audit (required for most rebate programs): 1-2 weeks to schedule

Electrical service upgrade (if needed): 1-2 days of work, plus 3-5 business days for NB Power to schedule the disconnect/reconnect. Schedule this first — the HVAC installer can't commission the heat pump without power.

Heat pump installation: 1-2 days for mini-splits, 2-3 days for ducted systems

TSANB electrical inspection: Schedule within 5-10 business days of completion

Post-retrofit energy audit: Required to finalize rebate claims

The entire process from first call to fully operational heat pump typically takes 4-8 weeks in New Brunswick, with electrical work being the longest lead time due to NB Power scheduling.

Keeping Your Oil System as Backup

Many New Brunswick homeowners choose to keep their oil furnace connected as backup for extreme cold snaps below -25°C, when heat pump efficiency drops significantly. In this case, the electrical work is simpler — you're adding circuits for the heat pump without removing the oil system's electrical connections. Just ensure your electrician labels all circuits clearly in the panel so you (and future owners) know which systems are which.

---

Find a Electrical Contractor

New Brunswick Electrical connects you with experienced contractors through the https://newbrunswickconstructionnetwork.com:

• A+ Solar Solutions ✓
• A&S Electric Ltd. ✓
• Blue Energy Ltd ✓

View all electrical contractors →