Harvest Thermal
Harvest Thermal Installation & Energy Solutions
Smart water heating and energy management for the modern home.
The short answer
Harvest Thermal is an all-electric system that uses one high-efficiency heat pump to provide your home's heating, hot water, and cooling. Green Core Heating & Air designs and installs Harvest Thermal systems in Sonoma and Marin, often replacing both an old gas furnace and a gas water heater in one project.
Overview
Harvest Thermal in Sonoma and Marin
Harvest Thermal combines your home's heating, hot water, and cooling into one all-electric heat pump system. Green Core Heating & Air installs Harvest Thermal systems in Sonoma and Marin counties, with completed projects in Petaluma and San Rafael.
It's a smart choice when both your gas furnace and gas water heater are getting old. Instead of replacing two gas appliances, you replace them with one system that stores heat when electricity is cheapest and uses it when you need it.
Benefits
Why homeowners choose this.
Smart energy management
Optimizes when and how energy is used throughout the day.
Lower operating costs
Time-of-use optimization means meaningful savings.
Integrates with heat pumps
Works seamlessly with modern heat pump HVAC systems.
Home-specific design
We evaluate whether it's the right fit before we ever install.
How Harvest Thermal works
A heat pump heats water and stores it in an insulated tank. That stored hot water supplies your faucets and showers, and it also feeds an air handler that heats your home through your ducts. Smart controls run the heat pump when electricity is cheapest and cleanest on time-of-use rates, so you're storing heat ahead of time instead of paying peak prices.
Because one system replaces two gas appliances, it's one of the most complete ways to take a home off gas.
Is Harvest Thermal right for my home?
It's a strong fit for homes with existing ductwork, homeowners replacing both a furnace and a water heater, and households on time-of-use rates or with solar. We evaluate space for the tank and outdoor unit, your ducts, and your electrical panel before recommending it, and we'll tell you if a standard heat pump plus a heat pump water heater would serve you better.
- Replaces a gas furnace and gas water heater
- Heating, hot water, and cooling from one heat pump
- Smart, time-of-use-aware controls
Rebates
Depending on where you live and current funding, heat pumps may qualify for rebates through TECH Clean California, BayREN, Sonoma Clean Power (Sonoma County), or MCE (Marin County). We check what's available and file the paperwork. The federal 25C tax credit ended for systems installed after December 31, 2025.
Our work
Recent projects in Sonoma and Marin
Real Green Core jobs for homeowners in Sonoma and Marin, with photos from the job site.
July 2026
Harvest Thermal installation in Petaluma
We replaced an aging furnace and water heater with a Harvest Thermal system that handles heating, hot water, and cooling from one high-efficiency heat pump.
See the job photosApril 2026
Harvest Thermal installation in San Rafael
We replaced an old Rheem water heater and York furnace with a Harvest Thermal system and a Carrier air handler.
See the job photos
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FAQ
Harvest Thermal questions, answered
What is a Harvest Thermal system?
An all-electric system that uses one heat pump to provide heating, hot water, and cooling, with stored hot water and smart controls that shift energy use to cheaper times of day.
What does Harvest Thermal replace?
Usually your gas furnace and gas water heater, and it can provide cooling too.
How does Harvest Thermal save money?
It's very efficient, and its controls heat water when electricity is cheapest on time-of-use rates, then use that stored heat later.
Does Harvest Thermal work with my existing ducts?
In most homes, yes. Heat is delivered through an air handler connected to your ductwork. We check your ducts during the estimate.
Is Harvest Thermal right for every home?
Not always. Space for the tank and outdoor unit, ductwork, and your electrical panel all matter. We'll recommend it only if it's the right fit.
Do you install Harvest Thermal near me?
Yes. We've installed Harvest Thermal systems in homes in Petaluma and San Rafael and serve homeowners across Sonoma and Marin counties.
Ready to talk Harvest Thermal?
Share a few details about your home and we'll reach out with clear, honest options.