How Many Heads Does A House Need?
Most Cape Breton homes need two to five indoor heads for a heat pump to heat the whole house. The count depends on how the rooms connect, not only on the square footage.
An open main floor might need one head. Each upstairs bedroom with a door might need its own small head, or one head in the upstairs hallway may be enough if the doors stay open. We walk through the house with you and mark each location before the quote is written.
Heating The Basement And The Upstairs Bedrooms
Upstairs bedrooms with the doors shut are the hardest rooms to heat in an older Cape Breton house, because warm air from the main floor does not get past the door. A small head in each bedroom, or one in the upstairs hall when the doors stay open, solves that. Finished basements are the other cold spot. A floor-mounted console head suits a basement better than a high-wall head, because it puts the heat down where your feet are. If the basement is unfinished and only needs to stay above freezing, it may not need a head at all. The walk-through decides each room, and the quote lists them one by one.
Slim-Duct And Ceiling Heads: Check The Rebate First
Some whole-home systems use a slim ducted unit hidden in a closet or ceiling to feed two or three small rooms through short ducts. They look clean, but they carry a rebate catch. Under the June 2026 Efficiency Nova Scotia guide, ducted, compact ducted and mixed-ducted mini-split systems are not eligible for the Home Energy Assessment rebate or the Moderate Income Rebate. Wall heads, floor consoles and ceiling cassettes on a ductless system, and full centrally ducted heat pumps, are treated differently. If the rebate matters to you, tell us before the design is drawn, and the quote will say which heads count toward it.
One Outdoor Unit Or Two?
A single multi-port outdoor unit can feed up to five indoor heads, which keeps the outside of the house tidy. Two separate outdoor units cost a little more but keep part of the house warm if one heat pump ever needs repair.
For large farmhouses outside Mabou or Whycocomagh, two outdoor units are often the better plan. For a compact two-story home in town, one multi-port unit usually does the job.
Multi-Zone Or Several Single-Zone Systems?
A multi-zone outdoor unit shares its heating capacity between every head connected to it. On a cold night when every room is calling for heat, each head gets its share, not its full output. Two or three single-zone systems, each with its own outdoor unit, give every head the full output of its own compressor. They take up more wall space outside, but they often heat better in the cold and keep part of the house warm if one unit is down. A multi-zone unit is tidier and suits rooms that need only a little heat, like small bedrooms. Many Cape Breton houses end up with a mix: a single-zone unit for the main floor and a multi-zone unit for the bedrooms.
How Do The Copper Lines Reach The Second Floor?
The copper line sets for upstairs heads run up the outside wall inside a painted cover that matches the siding. The cover protects the insulation from sun and wind and keeps the wall looking neat.
Where an attic or closet gives a cleaner route, we run the lines inside instead. Either way, the quote shows the route for each head.
Settings That Keep Every Room Comfortable
A whole-home system works best when it is left alone. Pick a temperature for each room and leave it there day and night, instead of turning heads off when you go out. Heat pumps are most efficient holding a steady temperature, and a cold room takes a long time to bring back. Set every head to heat, not auto, through the winter so it does not switch to cooling on a sunny afternoon. Keep baseboard thermostats a few degrees below the heat pump so they only come on as backup. Rinse the filters in every head on the same day so none of them gets missed.
Will The Electrical Panel Handle It?
A whole-home system draws more power than a single head, and it usually needs one or more new breakers. Many older Cape Breton houses still have a 100-amp panel that is already carrying electric baseboards, an electric hot water tank and a dryer. That panel may have no room left. We look at the panel and the main service during the free visit. If an upgrade is needed, the quote says so and lists it as its own line, so it is not a surprise halfway through the job. Electrical permits in Nova Scotia go through Nova Scotia Power Inspection Services.
What Does A Whole-Home Heat Pump System Cost?
The price of a whole-home heat pump system is set after a free visit, because it depends on how many heads the house needs and how the lines reach each room. The written quote prices every head on its own line.
Because the Home Energy Assessment rebate pays by the ton of heat pump capacity, a bigger whole-home system earns more, up to $5,000. Homes moving off oil may qualify for extra money through the Moderate Income Rebate, which our oil to heat pump conversion page explains.
Adding Heads In Stages
Not every household wants the whole house done at once. A system can be planned as a whole and installed in stages, for example the main floor this year and the bedrooms next year. The key is choosing an outdoor unit that has room for the heads still to come, or leaving space on the wall for a second outdoor unit. Keep the rebate deadline in mind: the Home Energy Assessment gives you 12 months from the first assessment to finish the work and book the final assessment. Anything installed after that window may not count. The quote can show the full plan and the first stage on separate lines.