How it Works
The world's first predictive water heater.
Your water heater uses 18% of your home’s energy. It should work for you.
Save money, energy, and water without changing your habits.
Learns your household's rhythm.
Thermal Intelligence tracks how and when you use hot water, then heats ahead of demand.
“After learning our schedule, the system dynamically adjusts - idling at the ready with 43+ gallons, to knowing it's kids' practice night with back-to-back showers coming and having 100+ gallons ready for us.”
Picks the cheapest time to heat.
Solar Sync and TOU Sync shifts heating to when solar output is highest or grid rates are lowest, storing heat like a battery: charged when it's cheap, ready when you need it, no habit changes required.
Handles surprise spikes.
Rapid Recovery Boost heats water as it flows out to the house, so a sudden demand spike doesn't leave you with lukewarm water.
(Max only)
“We have any amount of hot water we need, when we need it.”
Get up to 150 gallons of hot water out of a 50-gallon tank.
Acts three times bigger than its footprint.
Stores water extra-hot, then mixes it down to a safe, consistent temperature on the way out.
“We went from a “dumb” 80 gallon heat pump that often went cold and offered zero insights, to a “smart” 50 gallon tank that offers greater actual point in time hot water access.”
One setting for expected (and unexpected) guests.
Party Mode temporarily maximizes Virtual Capacity when you need more hot water than usual.
“It's a smart device in ways that are actually useful. … has a “party mode” for times when you have a crowd and don't mind sacrificing a little efficiency to make sure you have ample hot water.”
Steamy hot water, the instant you turn the handle.
No-Wait Shower circulates the cold water sitting in your pipes on command, letting you avoid the shivering pre-shower wait and saving thousands of gallons of water a year.
(Max only)
“Instant hot water showers. Seriously, no wasting minutes of cold water while it heats up!”
Protect your home from damage in ways no other water heater can.
Catches leaks before they spread.
Leak Sense watches for unexpected pressure drop in your pipes and senses water on the floor.
Keeps watch while you're away.
Vacation Mode minimizes energy use when you're gone, stays alert for problems, and has hot water ready by the time you're back.
Prevents frozen pipes.
Freeze Detection samples cold water to sense when pipes are at risk, and automatically runs recirculation to push warm water through connected lines.
(Max only)
Safety for sensitive households.
Mixing valve controls the water temperature, and optional Scald Alert lets you set a maximum output temperature.
Keeps the water clean.
Smart Self-Clean superheats the water if it sits too long in the temperature range where Legionella bacteria can grow.
Control it from anywhere.
Connects to smart home platforms like Home Assistant and Siri.
Transparent, affordable pricing. Installation included.
Across equipment, installation, and service, Reservoir is cost-competitive even with basic water heaters.
Key things to know:
Installation and a two year service warranty is included in every price.
We apply all state and regional rebates directly to your quote. (No hassle for you!)
In MA, Reservoir is eligible for 0% interest financing through the Mass Save® HEAT Loan program.
Core
Max
Price with instant rebates (MA)
$3,950
$5,450
Price before rebates
$5,000
$6,500
Installation included
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Predictive water heating
✔
✔
Solar Sync and TOU Sync
✔
✔
Home Protection
✔
✔
Over-the-air updates for life
✔
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No-Wait Shower
x
✔
Rapid Recovery Boost
x
✔
Freeze Detection
x
✔
30-amp electrical install
Add $500
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We install and service Reservoir ourselves, so you always have a direct line to us.
Get started with a free, no-obligation online Virtual Assessment.