Turn Your Water Heater into a Saver
Save hundreds per year on electric water heating.
Smart retrofit that automatically heats your water when electricity is cheapest and cleanest.
Cut your utility bill without changing your habits.
No behavior change required.
Validated in real homes.
Fully refundable · No shipping yet
Your water heater is costing you more than it should
$425 annual costs for electric resistance water heating
The second largest expense on your utility bill
Most homes overpay hundreds per year — without realizing it
What’s going wrong today
📈💸 Heats during peak prices
🔥⏳ Wastes energy when you're not using hot water
🌞❌ Misses cheaper, cleaner energy
ThermoSave fixes all three — automatically.
How it Works
Avoid expensive peak electricity
ThermoSave automatically turns off your water heater during high-price hours.
Store energy as hot water
Your water heater holds heat, so it doesn’t need to run constantly.
Use hot water as needed
Enjoy hot showers anytime — without changing your habits.
A typical electric water heater already stores ~10 kWh of energy as hot water.
Works with standard electric resistance tank water heaters (no plumbing required).
See if ThermoSave makes sense for you
Most homes save hundreds per year. See a quick estimate for yours.
Fully refundable · No shipping yet
Be among the first to save on water-heating costs.
Early access to product updates and development progress.
Estimated shipping window: Q2 2026.
$19 refundable deposit — final price confirmed before shipping.
Cancel anytime for a full refund before your unit ships.
Initial production quantities are limited.
Reserve yours
Fully refundable · No device shipped yet
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Install it yourself in less than 30 minutes, or hire your local electrician to help.
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Uses your electric pricing, learns and predicts your hot water needs. Intelligently schedules heating based on your usage and utility rates.
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Save without changing your habits or follow simple suggestions to save even more.
Save up to $1000 or more over 5 years. Estimate your savings.
Who we are
ThermoSave is designed and tested in real homes — including ours. We are a team with experience in connected embedded systems, home energy, and real-world electrification. Our team has years of experience building large scale connected hardware and energy systems used in homes and businesses today. We’re starting anew with water heating because it’s one of the biggest, lowest hanging — and least visible — energy costs in homes.