A machine that heats and cools your home. They're like ACs with a heating mode. Here's one that goes on the wall without air ducts. There are also ones that use central air ducts.

You can see a photo of a wall unit & an exterior condenser below :)

We wrote an entire article about this so you can vet contractors, too!

Otherwise, we spend A LOT of time thinking about how good installations take place, and publish our notes out in the open. We also have a small gallery here in case you want to check that out.

Typically, spring & fall. That's when we do the biggest ones. During the summer we'll help facilitate emergency installs as well, but generally we have max negotiating power + contractor capacity in the shoulder seasons.

If you'd like to participate, hit the sign up button above. When a group negotiation is taking place, you'll be the first to know via. email!

Okay, so in 2025, rebates are a bit different. Here's how much you might get:

• Using heat pumps as your primary heating source? Well, it's $3,000 per ton (capacity of your condenser), up to $10,000.
• Using heat pumps in addition to another heating source? Then, it's $1,250 per ton.

If you're installing heat pumps in a house, chances are, you're looking at $10k. Smaller units (e.g. triple deckers) may be closer to $9k.

If you're in one of these income buckets (e.g. family of 4 making less than $126,144), you may qualify for $16,000 in incentives!

3 friends from Cambridge named Kit, Christin, and Hannan. Here's how we're funded.