Harvest Thermal Battery
Smart thermal energy storage that works with your heat pump to save money, reduce peak energy demand, and deliver whole-home comfort around the clock.
Home / Brands / Harvest Thermal
The Smart Way to Store Energy at Home
Harvest Thermal stores heat in an insulated hot water tank connected to a heat pump. The system runs the heat pump when electricity rates are lower, then uses stored heat for space heating and hot water later. Allison Air designs, installs, and configures Harvest systems for Bay Area homes.
Why Choose Harvest Thermal?
Harvest Thermal brings smart energy storage to your home, turning your heat pump into a money-saving, grid-friendly powerhouse.
💰
Lower Your Electricity Bills
Harvest shifts heat pump use to lower-cost hours. Savings depend on your utility plan, usage, and installation.
🧠
Intelligent Energy Management
Harvest’s controller uses utility rates, weather, and household patterns to schedule heat storage automatically.
🔗
Seamless Heat Pump Integration
Harvest works with a heat pump, managing when it runs while maintaining home comfort.
🌿
Supports a Cleaner Grid
Using electricity outside peak hours can reduce demand on the grid and may lower your home’s emissions.
💧
Domestic Hot Water Included
Harvest stores heat for household hot water as well as space heating.
🛡️
Simple, Proven Technology
Harvest stores energy as heat in an insulated water tank, using a simple, durable storage method.
How the Harvest System Works
A simple, intelligent cycle of charging and discharging thermal energy to keep your home comfortable and your bills low.
🌙
Step 1 — Charge During Off-Peak Hours
During overnight and off-peak electricity hours, when rates are at their lowest, the Harvest controller activates your heat pump to heat the large, insulated water tank to high temperatures. This "charges" the thermal battery with stored energy, ready to be used when electricity prices spike.
- Heat pump runs during cheapest electricity hours
- Water tank heated to optimal storage temperature
- Heavily insulated tank retains heat for hours
- Automatic scheduling based on your utility rate plan
- Weather-aware forecasting optimizes charge level
☀️
Step 2 — Discharge During Peak Hours
When electricity rates rise during peak daytime and evening hours, the Harvest system draws stored thermal energy from the hot water tank instead of running the heat pump on expensive electricity. This stored heat is circulated through your home for space heating or delivered as domestic hot water.
- Stored heat provides space heating without running the heat pump
- Domestic hot water supplied from the thermal battery
- Heat pump stays off or runs minimally during peak rates
- Seamless comfort with no interruption to your routine
- Real-time monitoring via the Harvest app
❄️
Step 3 — Cooling & Year-Round Optimization
In cooling season, the Harvest system pre-cools your home during off-peak hours and optimizes heat pump operation to minimize peak electricity usage. The intelligent controller continuously adapts to seasons, weather, rate changes, and your household patterns to maximize savings year-round.
- Pre-cooling strategy shifts AC load to off-peak hours
- Year-round optimization for heating, cooling, and hot water
- Continuous learning adapts to your household’s patterns
- Over-the-air updates add new features and improvements
- Compatible with solar PV for even greater savings
Benefits of Thermal Energy Storage
Harvest stores heat in water for heating and hot water, then uses it when electricity costs more.
Key benefits
- Schedules heat pump use around utility rates
- Provides household hot water
- Reduces peak-hour electricity demand
- Can work with rooftop solar
- Offers app monitoring and automatic updates
- May qualify for current incentives; eligibility varies
Harvest Thermal System Comparison
See how the Harvest Thermal Battery compares to other home energy storage approaches for heating, cooling, and hot water.
| Feature | Harvest Thermal Battery | Lithium-Ion Battery (e.g., Powerwall) | Standard Heat Pump (No Storage) | Gas Furnace + Tank Water Heater |
|---|---|---|---|---|
| Energy Storage Type | Thermal (hot water) | Electrochemical (lithium-ion) | None | None |
| Time-of-Use Optimization | Yes — automatic | Yes — automatic | No | No |
| Space Heating | Yes — from stored heat | Indirect (powers heat pump) | Yes — real-time only | Yes — gas combustion |
| Domestic Hot Water | Yes — integrated | No — separate heater needed | No — separate heater needed | Yes — separate gas tank |
| Cooling Support | Yes — pre-cooling strategy | Yes — powers AC | Yes — real-time only | Separate AC required |
| Capacity Degradation | None | Loses ~2–3% per year | N/A | N/A |
| Estimated Bill Savings | 40–60% on heating & hot water | 20–40% on total electricity | Baseline | Higher gas & electric costs |
| Smart Controls | Cloud-connected, app, auto-scheduling | App-based monitoring | Standard thermostat | Standard thermostat |
| Best For | TOU rate optimization, whole-home comfort | Whole-home backup power | Basic heating & cooling | Legacy systems |
Professionally Installed by Allison Air
Allison Air designs and installs Harvest systems, including heat pump integration, plumbing, electrical work, and control setup. We configure the system for your home and utility plan, explain the app, and provide ongoing support.
Ready to Save with Harvest Thermal?
Contact Allison Air Comfort Solutions for a free consultation on Harvest Thermal Battery installation and start saving on your energy bills.
