Harvest in the East Bay? Yellowjacket has you covered.

Let's get you Harvesting.

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Better than a normal heat pump system. 
Waaaaaaay better than a gas furnace.

Harvest isn’t hype.
It’s science.

There’s no better way to heat your home - and your water - than with a Harvest system installed by Yellowjacket.

Save 30% on utility bills
Delete 90% of your home emissions
that’s more than switching to an EV!
Get it installed for less than gas
depending on incentives
Qualify for a 30% federal tax credit

Wait, what’s going on here?

The Heat Pump

Our hyper-efficient heat pump harvests electricity when it’s cheapest and cleanest (see what we did there?). It pulls warmth out of the air, even when it’s cold out.

The Tank

A very-insulated water tank holds just the right amount of heat until you need it - as hot water, or as warmth for your home. Temperatures inside the tank are continuously monitored and controlled. Easier said than done.

The Pod

The Pod tells everything else in the system what to do, and when to do it. All based on real-time data - temperature, rates, emissions…and if friends are staying over, the Pod adjusts for more showers on the fly.

The Air Handler

Hot water safely runs to hydronic coils inside the air handler. A super-efficient fan blows air across the hot coils and, ta-da!, your home is warmed. As are you.

The Air Handler works in homes with forced air. But if you use radiant floors, we’ve got you covered too.

People love Harvest

Danny W
Writer, Harvester

“We’re doing a good thing for the environment, and we’re paying about 40% less.”

Sara C
Earth Foundry

“Harvest has unlocked the decarbonization potential of the head pumps with its smart thermal battery.”

Gery W
Architect, Harvester

“It’s the most efficient system that I was able to find in my research.”

Karen H
Repeat Harvester

What do I like best about the system? ... wow there are so many things!

Ashley and Jason K
Harvesters

Honestly, we feel kinda spoiled now. Don't know how we can go back to the old system.

John T
Business Development Professional, Harvester

Harvest helped us improve our comfort and our energy footprint.

Alan W
Principal Software Engineer, Harvester

I truly feel I have the ultimate heating/cooling system.

Loren R
Non-profit executive, Harvester

We simply feel better about being in our home knowing every day contributes to the clean energy transition.

Matt Ferrell
Energy Youtuber

[Harvest] exemplifies the benefits of combining underappreciated hardware with smart software.

Gary W
Architect, Harvester

It’s the most efficient system I was able to find in my research.

Sara C
Earth Foundry

Harvest has unlocked the decarbonization potential of heat pumps with its smart thermal battery.

Danny W
Writer, Harvester

We’re doing a good thing for the environment, and we’re paying about 40% less.

Energy bills your great-great-great-grandkids will be proud of.

Load Shifting

We harvest clean, cheap solar energy around noon and store it as heat in the water tank. People shower and heat their homes in the morning and the evening when the grid is dirtier and more expensive. With Harvest you can use heat and hot water whenever you want, using that clean, cheap energy stored up in your tank.

Harvest Electric Draw (kW)
Electric Grid Emissions (KG CO₂e / hr)
Regular heat pump electric draw (kW)
Emission-slashing
Harvest cuts emissions from home heating ninety percent compared to gas furnaces, and forty percent compared to heat pumps without storage. Since home heating and hot water are around 2/3 of home energy use, this is a really big deal. We’ll put it this way: Harvest cuts more emissions than switching from a gas car to an EV.
Tons CO2e
Harvest Thermal System
Conventional Heat Pump
Gas
Bill-shrinking

These are energy bill reductions for fifteen real homes that replaced gas with Harvest. It’s easy to see why Harvest pays for itself in as little as five years.

Savings vs Gas
Savings vs Traditional Heat Pump

If your home heating isn’t making you feel warm (or fuzzy) anymore, check out Yellowjacket. We’re proud of our near-perfect Google and Yelp reviews - and we’re committed to transitioning the East Bay off of fossil fuels.

Get Harvest