A Colwood family recently called us for a heat pump quote after another contractor told them their 100-amp panel needed an upgrade to 200-amp before any install could happen. The other contractor’s number for the panel upgrade was well into four figures. The family was ready to write the cheque.
We drove out, opened the panel, ran the load calculation, and told them no. They didn’t need the upgrade. Their existing 100-amp service had enough headroom for the heat pump they wanted, and adding a subpanel or upgrading the whole service would have been thousands of dollars of unnecessary work.
The load calc caught something else useful: their electric water heater was on an old 30-amp breaker with room to stay, and their well pump was already accounted for — details a heat-pump-only contractor would have missed because they only look at the HVAC side of the panel.
They installed the heat pump. It runs beautifully. And they kept the money.
This is the guide we wish more Island homeowners had before they got scared into an upgrade they didn’t need.
When you actually need a 200-amp panel upgrade for a heat pump
There’s a specific answer to this and it’s not “always” and it’s not “never.” It’s a load calculation. Any competent electrician will do one before recommending an upgrade. Any contractor who tells you “you’ll need 200-amp for the heat pump” without opening your panel first is guessing — or upselling.
The real question is: what does your existing panel currently carry, and how much continuous load will the heat pump add?
The panel upgrade is genuinely needed when:
- You’re already running near your 100-amp limit before the heat pump — panel is packed with breakers, big loads (electric range, dryer, hot tub, EV charger) already drawing steadily, and your Hydro bills show high peak demand.
- You’re converting from oil or gas to a large central ducted heat pump that draws 25+ amps continuous during heating.
- You’re planning an EV charger, hot tub, or basement suite alongside the heat pump — the combined future load pushes past 100 amps.
- Your panel is old enough that we won’t recertify it — pre-1990 Federal Pacific, some older Zinsco panels, and anything with visible corrosion or damage.
The panel upgrade is NOT needed when:
- Your existing panel has plenty of unused capacity — measured load, not just breaker count.
- You’re installing a smaller heat pump — a ductless mini-split with two or three heads typically draws 10–15 amps continuous, well within a 100-amp service that isn’t already maxed out.
- You’re replacing an existing electric heat load — swapping electric baseboards for a heat pump often reduces your peak draw, not increases it, because heat pumps are two to three times more efficient than resistance heating.
What actually happens on a proper electrical assessment
We take a load calculation. That means we open your panel, catalogue every breaker, measure your actual continuous demand, then add the new heat pump’s rated continuous load and check whether it fits within the safety margin the electrical code requires.
Some contractors skip this step because it takes time. Some skip it because their business model relies on selling panel upgrades. We do it because a panel upgrade you don’t need is thousands of dollars of your money going to a job that has zero performance benefit for you.
Where the “always upgrade to 200-amp” myth comes from
Three real reasons the panel-upgrade pitch is so common:
- Older homes really do sometimes need it. In pockets of Metchosin, Sooke, and older Langford — homes built pre-1990 with original 100-amp service and years of accumulated loads — a proper load calculation genuinely comes back over the safety margin. In those cases, upgrading is the right call. But it’s not universal.
- It’s easier to say yes than no. For a contractor, quoting a big panel upgrade is a bigger invoice. For an electrician working the heat pump job, it’s less thinking than doing a proper load calc.
- The one-in-three math. A meaningful share of Island panel assessments do end in an upgrade recommendation, and that fact gets flipped into “you’ll probably need one” in sales conversations. Two-thirds of the time you don’t. The load calc tells you which third you’re in.
The one exception that catches people out: future load
There’s a legitimate case for upgrading proactively even when the heat pump alone fits. If you’re planning an EV charger in the next three years, or a hot tub, or a suite for a family member — the combined future load pushes past 100 amps and it’s cheaper to do the upgrade now, once, than to open the panel twice.
If any of those are on your five-year plan, tell us at the assessment. We’ll size for the future, not just for the heat pump.
When you DO upgrade, what actually gets rebated
The CleanBC ESP program rebates electrical service upgrades that are done in support of a heat pump install:
- ESP1 (lower-income households): up to $5,000 toward the electrical service upgrade
- ESP2: up to $3,500
- ESP3: up to $1,500
The rebate is only issued if the upgrade is done by BC Hydro or FortisBC and the work is completed within 6 months of the heat pump install. Sequence matters — an upgrade done a year before the heat pump doesn’t qualify. An upgrade done a year after the heat pump doesn’t qualify.
The Playbook here is coordination: do the panel upgrade and the heat pump install as one project, with the same crew, on overlapping days. One inspection. One rebate submission. Cleanest path.
What to ask the next contractor who quotes you a panel upgrade
Three questions:
- Did you do a load calculation? If the answer is no, or “we usually just recommend the upgrade,” the answer is you’re being upsold. Get a second opinion.
- What is my current measured load, and what will the heat pump add? They should be able to give you actual numbers, not “you’re probably fine” or “it’ll be tight.”
- What’s the rebate math on the upgrade? If they don’t know the current ESP rebate tiers, they haven’t checked in 2026.
What to expect from us
We open the panel. We take a load calculation. We tell you what your service can actually handle and what it can’t. If the upgrade is genuinely needed, we do it — and we submit for the rebate you qualify for. If it isn’t, we tell you and we don’t do work you don’t need.
Family-owned. Island-grown. 4.9 ★ Google Rated across the Island. We’re a registered CleanBC contractor and we do our own electrical in-house — heat pump and any panel work go through the same crew.
If you’ve been told you need a panel upgrade before your heat pump install, get a second opinion before you sign anything. Call (236) 361-8293 or book an assessment through our contact page.
— The Sasquatch Field Team
