Hearthline
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Series A · 2026

Hearthline

Residential heat-pump retrofits, made fast, financed, and permit-ready.

01 / Problem

The retrofit is the bottleneck.

Homeowners want heat pumps. Incentives pay for a third of the cost. But the quote-to-install loop still takes 11 weeks, and two in three projects stall on permits or financing.

02 / Thesis

We run the retrofit like a product, not a job site.

One operating system for the installer, the homeowner, the utility, and the lender. Quote in 48 hours, permit in 10 days, install in 3.

03 / How it works

Three surfaces, one loop.

04 / Traction

12 months in.

Projects installed
1,284
across 4 metros
Quote to install
19
days, median
Revenue run rate
$14.2M
at Q1 exit
Gross margin
31%
on installed work
05 / Why now

The tailwinds are in place.

Inflation Reduction Act rebates are live in 38 states. Utility demand-response programs now pay installers directly. Residential rates are up 22% year-over-year. The economics finally clear without a subsidy hunt.

06 / Team

Operators who shipped this before.

Maya Shaw
Co-founder, CEO
Scaled SunRun's residential ops from 8 to 42 markets. Ex-Tesla Energy.
Derek Okonkwo
Co-founder, CTO
Built the pricing engine at Opendoor. Carnegie Mellon robotics.
Priya Venkatesan
Head of Capital
Former MD at Hannon Armstrong. Structured $4B+ of climate debt.
07 / Ask

Raising $22M Series A.

18 months of runway. Opens 6 new metros, doubles install capacity, and funds the first $40M of our home improvement loan book.

08 / Contact

Let's talk.

We're closing the round in the next six weeks.

Maya Shaw
maya@hearthline.co · (415) 555-0142