
Enbridge Sustain vs Renting a Water Heater: The Real Math
If you're paying Reliance, Direct Energy, or EnerCare every month for a water heater you don't own — you're probably losing $4,000–$8,000 over the life of the contract. Here's the comparison spelled out, plus how to escape the rental and what your alternatives look like.
Quick Answer: Sustain vs Rental — 20-Year Cost
Renting a water heater from Reliance, Direct Energy, or EnerCare costs roughly $25–$45/month forever — that's $7,000–$11,000 over 20 years, and you never own the equipment. Enbridge Sustain lease-to-own costs roughly the same monthly during the 15-year term but ENDS with you owning a brand-new system. Buying outright ($1,500–$5,500) is the cheapest long-term but ties up cash. Toronto homeowners switching from rental to Sustain typically save $4,000–$8,000 over 10 years.
Three Options, Side-by-Side
| Rental (Reliance / EnerCare) | Enbridge Sustain | Buy Outright | |
|---|---|---|---|
| Upfront Cost | $0 | $0 | $1,500 – $5,500 |
| Monthly Cost | $25 – $45 (rises annually) | ~$25 – $40 fixed | $0 (after install) |
| Term Length | Forever (auto-renews) | 15 years (180 months) | N/A — own it day 1 |
| Maintenance Included | Yes | Yes | No (annual ~$80) |
| Repairs Included | Yes | Yes | No (per-incident) |
| Equipment Ownership | ❌ Never | ✅ At end of term | ✅ Day 1 |
| 20-Year Total | $7,000 – $11,000+ | $4,000 – $8,000 | $1,500 – $5,500 |
| Transferable on Sale | Often blocks sale | Yes (assignable) | Yes (your asset) |
| Early Exit Cost | $200 – $1,500+ buyout | Buyout schedule, no penalty | N/A |
Rental cost ranges based on typical Reliance, Direct Energy, and EnerCare contracts in the GTA. Sustain pricing ranges based on equipment type (tank, tankless, HPWH). Buy-outright pricing reflects current 2026 Toronto installed prices.
Why Rental Companies Win and You Lose
Rental contracts feel convenient because there's no upfront cost and they handle repairs. The math gets ugly because of three structural features:
1. Annual Rate Increases
Most rental contracts include automatic 3-5% annual rate increases. A unit that started at $25/month in 2015 is often charging $40+/month today — and will keep going up regardless of repair costs or unit value.
2. No Ownership Equity
After 20 years and $9,000 in payments, you don't own the unit. If you stop paying, the rental company takes it back. Compare to lease-to-own (Sustain) or buying outright — both end with the equipment as your asset.
3. Buyout Costs Block Switching
When you finally do the math, the buyout fee discourages switching. But the buyout is usually less than 1-2 years of rental fees — meaning even paying the buyout puts you ahead within 24 months.
How to Switch from a Rental to Sustain (or Outright)
We've helped many Toronto homeowners exit rental contracts. The process is simpler than the rental companies make it sound.
Get Your Buyout Quote
Call your rental company and ask for the current buyout figure. It's typically $200–$1,500 depending on unit age. Get it in writing.
We Quote Your Replacement
Free in-home assessment. We confirm what unit fits your home (tank, tankless, HPWH) and quote both Sustain lease-to-own and buy-outright pricing.
We Run the 5-Year Math
Side-by-side: keep renting vs buyout + Sustain vs buyout + outright. The right answer is usually obvious once you see the numbers for your specific situation.
We Install + Coordinate Removal
New unit installed in one day (4-6 hours). We coordinate the rental company's removal pickup. You go from renting to owning in a single afternoon.
Bonus angle: switch to a heat pump water heater while you're at it
Many Toronto homeowners use the rental-exit moment to upgrade to a heat pump water heater (HPWH). HPWHs cut hot water electricity use by 60-70% versus a standard electric tank, save $200-$400/year on bills, and qualify for a $500 rebate through the Home Renovation Savings program. Combine with the BetterHomesTO HELP zero-interest loan if you're bundling other upgrades.
See Heat Pump Water Heater PricingSustain vs Rental FAQs
Is renting a water heater a bad idea?
How does Enbridge Sustain differ from a Reliance / EnerCare rental?
Can I get out of a Reliance or EnerCare rental contract?
How much does a new water heater cost in Toronto?
Is Enbridge Sustain worth it vs paying cash?
How long does a typical Enbridge Sustain water heater term run?
Will I save money switching from rental to Sustain?
Can I switch from a rental to a heat pump water heater?
Get Out of Your Rental
We come to your Toronto home, assess your existing rental setup, and quote the buyout-and-replace path side-by-side with what you're paying now. The numbers usually speak for themselves.
- Free in-home assessment
- 5-year cost comparison (rental vs alternatives)
- Coordination of rental removal
- Buy-outright + Sustain options both quoted
Request a Free Estimate
We respond within 1 business hour.

