The Stash M1
Smart Home Comfort System

The only ductless air-to-air heat pump with built-in electric thermal storage.

Reduce your power bill and protect the environment. Choose the sustainable heating and cooling solution that saves you money.

Year-round comfort
Heat pumps are the most efficient way
to heat and cool your home.

By pairing heat pumps with our patented storage system, we deliver savings to our customers and make the grid more resilient and reliable.

The Stash M1 is a dependable and easy to install solution for regulating the temperature of your home 12 months of the year.


Stash your energy
with thermal energy storage.

Help your utility help you. The energy stored by your system can be used by your utility company to offset the stress on the electrical grid during peak periods. This results in cost savings for you and allows utility companies to rely less on fossil fuel burning generators.

The Stash M1 stores energy for heating and cooling. Storage systems allow homeowners to store energy during cheap off-peak hours for use during peak hours when electricity is more expensive.

Set it and forget it.
Schedule when you heat or cool your home.

With the Stash Smart Thermostat and mobile app, set your home's comfort level to fit your schedule. Without affecting your home's temperature, your utility can control the thermal energy stored in the Stash M1 to reduce your on-peak costs when you heat or cool your home.

Save on your heating bill with the Stash M1.

Don’t miss out, you could save up to 70% on your heating bill with the Stash M1.
Compare your current heating system with the data below to see how much you can expect to save.

Up to

Baseboard heating system

Up to

Oil heating system

Up to

ETS heating system

Up to

Traditional heat pump system

Based on the results of the Summerside Project.

Energy Storage Capacity

The energy storage material used in the Stash M1 can store up to 48,000 BTU per cycle, which has an electrical equivalent of 7kWh per cycle.

The Stash M1 cycles twice a day, for a total storage capacity of 94,000 BTU or 14kWh.

Each cycles provides 4 hours of cost effective heating for your home.

Energy stored per cycle (heating load)

48,000 BTU

Time to discharge at 100% output - Heating

4 hours

Number of cycles per day


Lifespan of energy storage material

7,000+ cycles

Base load shifting capabilities

2 kW

Save money on heating and cooling your home.

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