Clean Flame

What Clean Flame does

Clean Flame Thermal Solutions (DBA Clean Flame) is a US-based climate technology startup developing a hybrid fireplace-heat pump system that integrates a Fujitsu mini-split heat pump within a real stone veneer facade. Founded in 2023 and headquartered in Dalton, the company targets residential homeowners and communal spaces seeking year-round heating, cooling, dehumidification, and MERV 13 air filtration from a single ductless unit. The system is available in three capacity tiers (Standard 9k, Large 12k, and X-Large 18k) with over 70 stone surround decor options for aesthetic customization.

The core technology combines Fujitsu's inverter-driven variable-speed compressor with a slim duct indoor unit and outdoor unit configuration, eliminating ductwork and the associated energy losses typical of central AC. The fireplace facade integration is patent pending with multiple patent pending components. Heating efficiencies range from HSPF 11.4 to 11.7 and cooling efficiencies from SEER 20.0 to 20.2 depending on the model tier. The ductless configuration is designed for easy installation in both new builds and retrofits, with the facade layer intended to add minimal incremental cost over a standard mini-split heat pump.

Clean Flame operates a direct-to-consumer go-to-market model, with planned sales via website contact form, email outreach, and beta testing. Pricing is custom-quoted based on system size and installation complexity. The company is currently pre-revenue and in beta testing phase, having validated its first prototype at the Rist Institute of Sustainability and Energy at UMass Lowell. Target commercial market launch is 2026, delayed from earlier plans due to the industry-wide transition to A2L refrigerants. The company is bootstrapped, with no disclosed institutional funding beyond participation in the Cleantech Open accelerator.

Name

Clean Flame

Legal name

Clean Flame Thermal Solutions

Website

https://cleanflameus.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Clean Flame Thermal Solutions is a US-based climate technology startup developing a hybrid fireplace-heat pump system that integrates Fujitsu mini-split technology with a decorative stone facade to deliver heating, cooling, and air filtration for residential homeowners and communal spaces.

Ownership category

akta.pro rank

Product category

Residential HVAC / Heating Equipment

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Residential HVAC System Installation (Furnace/AC/Heat Pump) (HSAOAGAA)

Keywords

• Heat pump systems
• Fireplace heating
• Residential HVAC
• Ductless mini-split
• Decorative stone veneer

Headquarters

HQ city

Dalton

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Operations, Personnel, Marketing or Sales

Revenue model

1. Heat Pump Fireplace System Sales: One-time hardware sales of the Clean Flame system, which combines a Fujitsu mini-split heat pump with a decorative fireplace facade. System is sold directly to consumers and is designed to be both affordable and easy to install.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

Clean Flame develops and sells a ductless mini-split heat pump system that is integrated within a decorative fireplace facade. The product is offered in three heating capacities (9k, 12k, and 18k BTU) and supports 70+ stone veneer decor options, targeting residential homeowners who want efficient heating combined with traditional fireplace aesthetics.

Product overview

Clean Flame Thermal Solutions offers a single unified product line — the Clean Flame system — which is a mini-split heat pump integrated within a customizable fireplace facade. The system combines Fujitsu variable-speed compressor heat pump technology with a real stone veneer surround to provide heating, cooling, and air purification. The product is available in three capacity tiers (Standard 9k, Large 12k, and X-Large 18k) to serve different space sizes, and features a MERV 13 air filter for enhanced indoor air quality.

Differentiator

Problem solved

Functional benefit

Products and services

• Clean Flame Standard Mini-Split Heat Pump Fireplace (9k BTU) A 9,000 BTU ductless mini-split heat pump integrated within a decorative fireplace facade, designed for smaller residential spaces and offered with 70+ stone veneer decor options.
• Clean Flame Large Mini-Split Heat Pump Fireplace (12k BTU) A 12,000 BTU ductless mini-split heat pump integrated within a decorative fireplace facade, sized for medium residential rooms, with 70+ stone veneer decor options.
• Clean Flame X-Large Mini-Split Heat Pump Fireplace (18k BTU) An 18,000 BTU ductless mini-split heat pump integrated within a decorative fireplace facade, sized for larger residential spaces, with 70+ stone veneer decor options.

Quantifiable outcome

• Filters more than 90% of particles 3 microns and larger
• +5 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• FujitsucoreTechnology or IntegrationFujitsu provides the mini-split heat pump technology integrated within the Clean Flame system. The product uses Fujitsu's inverter-driven compressor technology. Clean Flame integrates Fujitsu's slim duct indoor unit and outdoor unit components.
• Rist Institute of Sustainability and Energy at UMass LowellminorStrategic or Co-development PartnerThe Rist Institute at UMass Lowell hosted the first Clean Flame prototype installation. This partnership validated the product concept through real-world testing. The prototype worked great and confirmed the design direction.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Daikin: Daikin is the world's largest HVAC manufacturer and a major player in heat pumps. Broad incumbent that competes in Clean Flame's underlying product category through much broader distribution and brand reach.
• Mitsubishi Electric Trane HVAC US: Mitsubishi is a market leader in ductless mini-split heat pumps in the US. Broad incumbent in Clean Flame's core technology category; could easily enter the fireplace-aesthetic niche if the market proves attractive.
• Carrier: Carrier is a top US HVAC manufacturer offering heating, cooling, and air quality products. Broad incumbent whose financial strength, distribution network, and brand recognition vastly exceed Clean Flame's current footprint.
• Bosch Home Comfort: Bosch manufactures residential heat pumps and is expanding US market presence. Broad incumbent in Clean Flame's technology category with strong brand recognition and installer network.

Direct peers

• Modern Flames: Modern Flames designs premium electric fireplaces with a strong design-led, decorative positioning. Direct peer in the 'aesthetic electric fireplace' segment, though they do not integrate heat pump functionality.
• Napoleon (Wolf Steel): Napoleon is a Canadian manufacturer that straddles fireplaces, heating, and HVAC. Direct peer as a multi-category home comfort brand that already combines fireplaces with broader HVAC offerings.
• Dimplex (Glen Dimplex Group): Dimplex is a leading manufacturer of electric fireplaces and heating products, with a global brand and strong consumer recognition. Direct peer in the electric fireplace category and one of the few players that has tried to combine visual appeal with heating technology.
• Hearth & Home Technologies (Heat & Glo / Heatilator): Hearth & Home Technologies is the largest US manufacturer of fireplaces (Heat & Glo, Heatilator, Quadra-Fire brands). They occupy the exact household position Clean Flame targets but with combustion technology. Highly relevant as the incumbent Clean Flame is trying to displace.

Emerging players

• Fujitsu General: Fujitsu General is Clean Flame's core technology partner, supplying the mini-split heat pump components. While currently a supplier, Fujitsu also sells its own branded mini-splits and could potentially launch a competing aesthetic-integrated product.
• MrCool: MrCool sells DIY ductless mini-split heat pumps directly to consumers, with a focus on installer-friendly design. Overlaps with Clean Flame's core technology (mini-split heat pumps) and similar DTC distribution model, though without the fireplace aesthetic.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/clean-flame-thermal-solutions

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Clean Flame