Tankless Water Heater Payback
Estimate how long it takes extra tankless install costs to earn themselves back. Enter the price premium versus a storage tank and your expected monthly utility savings. Optionally add any annual maintenance difference to see a net payback timeline in months and years.
Energy savings vary by home, climate, and usage. Confirm with a contractor before purchasing.
Examples
- $1,800 premium, $35 monthly savings, $120 annual maintenance ⇒ Monthly net savings: $25.00 USD • Payback period: 72.00 months (6.00 years).
- $1,200 premium, $28 monthly savings, maintenance blank ⇒ Monthly net savings: $28.00 USD • Payback period: 42.86 months (3.57 years).
FAQ
Should I include rebates or tax credits?
Subtract any rebates or credits from the price premium before calculating to shorten the payback timeline.
Can I model fuel price changes?
Adjust the monthly savings input to your expected average bill reduction if prices rise or fall.
What about financing costs?
Add loan interest to the price premium or reduce the savings input by the monthly payment to reflect financing.
Additional Information
- Result unit: months and years to breakeven, plus monthly net savings in USD.
- Maintenance defaults to $0 annually; subtracts evenly across months when provided.
- Payback only computes when monthly savings exceed maintenance so you avoid dividing by a negative or zero.