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Stone Mountain Technologies Inc

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Offers sorption heat pumps for residential and light commercial applications

Bluff City, United StatesFounded 2010Energy

Valuation $50–100M Last recorded · 2024

Headcount <100 Current team size

Total funding $10–50M Disclosed equity funding

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About Stone Mountain Technologies Inc

Stone Mountain Technologies, Inc. (SMTI) specializes in the development and supply of high-efficiency thermal compressors and sealed systems for thermally driven heat pumps. These heat pumps utilize natural gas, propane, fuel oil, biofuels, and solar energy to provide heating, cooling, and refrigeration solutions. SMTI's products are designed to offer significant energy savings and environmental benefits, making them a viable alternative to conventional furnaces and boilers, especially in cooler climates. The company serves HVAC manufacturers and energy service companies, operating primarily in the heating, ventilation, and air conditioning (HVAC) market. SMTI's business model focuses on B2B partnerships, enabling their partners to offer customized, efficient heating products to end-users. Revenue is generated through the sale of thermal compressors and sealed systems, as well as through licensing agreements.

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At a glance

Status: Operational
Founded: 2010
Headquarters: Bluff City, United States
Employees: 16
Open positions: None listed
Dealroom signal: 29.0/100
Industry: Energy, Engineering and Manufacturing Equipment
Sector: Energy, Sustainable Development Goals, Heat Pump, Climate Tech, air conditioning, DT and LS, science-based
Technology: Deep Tech
Business model: Manufacturing
Client focus: b2b
Links: Website LinkedIn

Knowledge graph

Founder mafia, market maps, research and news connected to this company by Dealroom

Funding history

2 recorded events

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
LATE VC✓Equity / VC	Oct 2024	$9.5M	$75M	Energy Impact Partners	↗
SERIES A✓Equity / VC	Nov 2022	$15M	$60M	Energy Impact Partners	↗

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Growth signals

Stone Mountain Technologies Inc website traffic

Latest recorded traffic for Stone Mountain Technologies Inc is 1.8K monthly website visits, up 28.6% over the last three months. Stone Mountain Technologies Inc's team declined 27.3% over the past year.

Latest monthly visits1.8K 3-month web change+28.6% 1-year team growth-27.3%

Monthly website visitsDec 2022–Jun 2026

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Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Company	Headquarters	Status	Employees	Total funding	Valuation
PAPascalDeveloping a novel class of solid refrigerants poised to transform the heating, ventilation, and air conditioning (HVAC) industry	Cambridge, United States	Operational	32	$8M	$32M
QUQuattAI-powered hybrid and all-electric heat pump systems	Amsterdam, Netherlands	Operational
EQEquiumDevelops new acoustic heating for residential application (heating and hot water)	Saint-Herblain, France	Operational
CTConry TechConry Tech is reinventing air-conditioning to improve comfort and make heating and cooling more sustainable	Melbourne, Australia	Operational
BEBlueHeart EnergyThermoacoustic engine for refrigerant-free residential heat pumps.	Alkmaar, Netherlands	Operational
EXExergynWe are developing the world’s first solid state, emission and refrigerant free heat pump.	Dublin, Ireland	Operational
EVEvariNext-generation compressor that will accelerate the transition to renewable energy in a broad range of markets	Peterborough, United States	Operational
MAMagnetoEfficient heating and cooling without refrigerant or fossil fuels	Delft, Netherlands	Operational

Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

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Investors

1 investor on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A1 investor entered at this stage

EPEnergy Impact Partners

Talent

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Team profiled 1 named & role-tagged

Founders /100 quality score

Key operators quality score

Potential founders likely future founders

Startup mafia alumni-founded startups

Talent movements in · out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country

Workforce by country

1 countries with
team presence

🇺🇸 United States100%

1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Stone Mountain Technologies Inc on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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