The Real Choices, Straight Up
Vinyl Frame, Double-Pane Low-E
Cost installed: $500-$900 per window, or roughly $8,000-$14,000 for a full-home 15-window replacement. Best for: most homes in coastal BC's milder climate.
The default pick for most BC replacements — vinyl doesn't need painting, resists rot, and low-E coating with argon fill easily meets ENERGY STAR requirements for the rebate. It's the cheapest way to qualify for the full $2,000 in most of the province.
Vinyl Frame, Triple-Pane
Cost installed: $700-$1,200 per window, or roughly $10,500-$18,000 for the same 15-window home. Best for: colder interior regions like Prince George, Fort St. John, or Kamloops where winter temperature swings are more extreme.
An extra pane of glass and gas fill cuts heat loss further, but the marginal insulating gain over double-pane low-E is smaller on the coast than it is inland. In Vancouver, Victoria, or Nanaimo's moderate winters, the added cost rarely pays back faster than putting that money toward more windows or other upgrades.
Fiberglass Frame
Cost installed: $900-$1,500 per window, or roughly $13,500-$22,500 for a full-home replacement. Best for: larger window openings, coastal homes facing driving rain, or homeowners planning to stay 20+ years.
Fiberglass expands and contracts less than vinyl across temperature swings, which matters for bigger picture windows where a poor seal shows up as drafts and condensation faster. It costs noticeably more than vinyl for the same glazing performance, so it's a longevity and structural choice more than an energy-efficiency one.
| Type | Cost per window | 15-window home | Best for |
|---|---|---|---|
| Vinyl, double-pane low-E | $500-$900 | $8,000-$14,000 | Coastal, moderate climate |
| Vinyl, triple-pane | $700-$1,200 | $10,500-$18,000 | Colder interior regions |
| Fiberglass | $900-$1,500 | $13,500-$22,500 | Large openings, long-term durability |
How the BC Rebate Applies
BC Hydro and CleanBC offer up to $2,000 for replacing old windows and doors with ENERGY STAR-certified models, regardless of which frame or glazing option you pick — the rebate is tied to the ENERGY STAR rating, not the material. Income-qualified households can access deeper rebates.
Full-home window replacement typically runs $8,000-$15,000, so after the $2,000 rebate most homeowners pay $6,000-$13,000 out of pocket. Energy savings from the upgrade run $400-$800/year depending on how drafty your old windows were.
The rebate amount is consistent provincewide — Vancouver, Kelowna, and every other BC city page shows the same up-to-$2,000 figure, since it's a CleanBC/BC Hydro program rather than a municipal one.
What to Check Before You Buy
- Confirm ENERGY STAR certification on the specific model quoted: not every window a contractor sells qualifies — ask for the certification number before you sign.
- Count how many windows actually need replacing: a partial replacement (just the worst-performing rooms) can still qualify and costs less than a full-home swap.
- Ask about installation method: a full-frame replacement costs more than an insert replacement but fixes rot or air-sealing issues in the surrounding wall that an insert can't address.
- Check your climate zone before choosing glazing: triple-pane's extra cost makes more sense the further inland and colder your city is.
What to Ask Before You Sign
- "Is this specific window model ENERGY STAR-certified for the BC rebate?"
- "Will you file the rebate claim, or do I need to?"
- "What's the installed cost after rebate, not before?"
- "Full-frame or insert replacement, and why for my situation?"
- "What's the warranty on the seal, not just the glass?"
The One Number That Matters
Replacing old, drafty windows in a typical BC home saves $400-$800/year in heating costs. Combined with the $2,000 rebate, the payback period on a mid-range vinyl double-pane replacement is usually 8-12 years — longer than a heat pump or water heater upgrade, but windows also solve drafts, condensation, and noise that no other upgrade touches.