Heat-Flo

What Heat-Flo does

Heat-flo, LLC is a privately-held American manufacturer founded in 1998 and headquartered in Uxbridge, Massachusetts, where it designs, engineers, and manufactures its entire product line. The company specializes in stainless steel tank-type water heaters and hydronic equipment, with a portfolio that includes indirect-fired water heaters, high-output indirect water heaters, hot water booster and storage tanks, multi-energy (solar-capable) tanks, hydronic buffer tanks, commercial electric water heaters, and light commercial electric water heaters.

The company's products are built around 316L stainless steel construction throughout the tank and cold-water dip tube, top-mounted pipe connections intended to reduce installer labor, R-16+ HFO-based two-part urethane foam insulation with a global warming potential of 1 and zero ozone depletion potential, and a tank architecture designed for disassembly and material recycling at end of life. Convertible commercial electric units allow field conversion of wattage, voltage, and phase through more than 25 conversion kits. Heat-flo has held ISO 9001:2015 certification since October 2019, with subsequent surveillance and recertification audits finding no nonconformities.

Heat-flo operates a B2B wholesale distribution model: products are sold exclusively through wholesale plumbing and heating distributors to licensed contractors across the United States and parts of Canada, with no direct-to-homeowner channel. The company is supported by a network of independent sales representative organizations covering specific US territories and seven Canadian provinces (Quebec, Ontario, British Columbia, Alberta, Saskatchewan, Manitoba, plus Pacific Northwest). Revenue is generated entirely from hardware sales; pricing is not publicly disclosed. The company is founder-owned (George Celorier, President), self-funded, and has no parent company, subsidiaries, or known external institutional investors.

Name

Heat-Flo

Legal name

Heat-flo, LLC

Website

https://heat-flo.com

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

Heat-flo, LLC is a Uxbridge, Massachusetts-based manufacturer of stainless steel tank-type water heaters serving residential, commercial, and hydronic markets through wholesale distribution to licensed contractors across the United States and parts of Canada.

Ownership category

akta.pro rank

Product category

Water Heating Equipment

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers (423720)

SIC

Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430), Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

Keywords

• Stainless steel water heaters
• Indirect water heaters
• Hydronic heating equipment
• Commercial electric water heaters
• Water storage tanks

Headquarters

HQ city

Uxbridge

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Stainless Steel Water Heater Sales: Revenue generated from the sale of indirect-fired water heaters, commercial and light commercial electric water heaters, hydronic buffer tanks, hot water storage tanks, and multi-energy tanks. Products are sold exclusively through wholesale distribution channels to licensed contractors.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Heat-Flo manufactures and sells stainless steel tank-type water heaters for residential and commercial hydronic and electric applications. Its product line includes indirect-fired water heaters, commercial electric water heaters, hydronic buffer tanks, hot water storage tanks, and multi-energy tanks sold through wholesale distribution to plumbing and heating contractors.

Product overview

Heat-flo is a water heating equipment manufacturer offering a comprehensive portfolio of stainless steel tank-type water heaters. The product line centers on Indirect Water Heaters and High Output Indirect Water Heaters (using furnace/boiler heat sources), complemented by Hot Water Booster/Storage Tanks, Multi-Energy Tanks for solar applications, and Hydronic Buffer Tanks for heating systems. Commercial Electric Water Heaters and Light Commercial Electric Water Heaters round out the portfolio for electrically-heated applications. All products feature stainless steel construction (316L grade), top-mounted connections for easy installation, and R-16+ insulation using environmentally friendly HFO-based foam. The company emphasizes quality through ISO 9001:2015 certification and manufactures all products at their Uxbridge, Massachusetts facility.

Differentiator

Problem solved

Functional benefit

Products and services

• Stainless Steel Indirect Water Heaters Tank-type water heaters constructed of stainless steel that use heat from an external boiler (or other energy source) to heat domestic potable water. Designed for residential and commercial hydronic systems and for use with high-efficiency boilers, solar thermal, geothermal, and heat pump sources.
• Commercial Electric Water Heaters Stainless steel tank-type electric water heaters intended for commercial applications where electric heating is the primary energy source.
• Hydronic Buffer Tanks Stainless steel tanks used in hydronic heating systems to add thermal mass, reduce short-cycling of boilers, and stabilize system temperature.
• Hot Water Storage Tanks Stainless steel storage tanks that hold heated potable water for on-demand delivery, used in residential and commercial hot water distribution systems.
• Multi-Energy Tanks Stainless steel tanks engineered to accept heat input from multiple energy sources such as boilers, solar collectors, geothermal loops, or heat pumps, allowing flexible integration with mixed-energy hydronic systems.

Quantifiable outcome

• R-16+ insulation exceeds U.S. Department of Energy and ASHRAE requirements
• +3 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core.

• Prowest Sales LTD.coreChannel Partner/ Reseller/ Distributor · 8 August 2023Established in 1979, Prowest Sales represents Heat-flo in British Columbia. Started as a small family business focused on supplying high quality plumbing products to the wholesale industry.
• Kadin Sales LTD.coreChannel Partner/ Reseller/ Distributor · 8 August 2023Kadin Sales represents Heat-flo in Alberta. The company name means 'friendship and companionship,' reminding them of the importance of building strong relationships with customers. Started in 2005.
• Westcan Mechanical SalescoreChannel Partner/ Reseller/ Distributor · 8 August 2023Westcan Mechanical Sales represents Heat-flo in Saskatchewan and Manitoba. Has been proudly serving the kitchen & bath and plumbing & heating industries since 2003, covering Saskatchewan, Manitoba, Alberta, and Northwest Ontario.
• Hydronic Systems Canada Inc.coreChannel Partner/ Reseller/ Distributor · 25 February 2022Hydronic Systems Canada Inc. represents Heat-flo in Quebec and Ontario. The partnership brings years of experience providing high quality hydronic solutions to the Canadian market. Heat-flo describes this as a 'good standing, strong relationship' for years to come.
• Proctor SalescoreChannel Partner/ Reseller/ Distributor · 8 November 2021Proctor Sales represents Heat-flo in Washington, Oregon, Northern Idaho, and Alaska. Since 1957, Proctor Sales has been the premier sales and technical resource for boiler, steam and hydronic products in the Pacific Northwest. Pride themselves in representing 'best in class' market leaders in hydronic solutions.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Hubbell Heaters: Specialty manufacturer of electric, indirect-fired and stainless steel storage water heaters for commercial and industrial applications. Closely matches Heat-flo's stainless tank and indirect water heater portfolio and contractor-led GTM.
• Bradford White Corporation: Leading US manufacturer of residential and commercial water heaters including stainless and indirect-fired tank models. Directly competes with Heat-flo in tank-type water heating across wholesale distribution to plumbing and heating contractors.
• HTP (Heat Transfer Products): Manufacturer of high-efficiency indirect water heaters, combination boilers, and hot water storage tanks. Directly comparable to Heat-flo in indirect-fired water heating and hydronic buffer tank categories via the same two-step wholesale channel.
• Amtrol (Caleffi): Manufacturer of well tanks, expansion tanks and stainless hot water storage tanks serving the same wholesale plumbing and heating channel. Overlaps with Heat-flo's Hot Water Booster/Storage and Multi-Energy tank products.
• Triangle Tube / Caleffi North America: Premium indirect water heaters, stainless storage tanks and hydronic components sold through wholesale plumbing channels. Directly competes with Heat-flo in the hydronic and indirect water heater categories and is named in management's prior employer history.
• SuperStor (Bosch Thermotechnology): Stainless steel indirect water heaters and storage tanks marketed for residential and light commercial use. Directly comparable SKU set to Heat-flo's Indirect Water Heaters and Hot Water Booster tanks.

Broad incumbents

• A.O. Smith Corporation: Largest US water heater manufacturer with commercial, residential and indirect-fired tank portfolios. Overlaps with Heat-flo across multiple product categories, with much greater scale and broader channel coverage.
• Rheem Manufacturing Company: National water heater and heating product manufacturer including stainless and high-efficiency commercial lines. Competes broadly with Heat-flo through the same plumbing and heating wholesale distribution network.
• Lochinvar Corporation: Manufacturer of high-efficiency commercial boilers and water heaters including stainless storage tanks. Competes with Heat-flo in the light commercial and commercial electric water heater segments and through shared rep-wholesaler channels.

Emerging players

• Niles Steel Tank: Niche stainless steel water tank specialist serving industrial and commercial water storage applications. Comparable to Heat-flo in material choice and modular stainless tank engineering, with overlap in hydronic and storage tank use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCfRWk3yf5SuGPHHXsJhtUPw
• LinkedInlinkedin.com/company/heat-flo
• Instagraminstagram.com/heatflollc
• Xx.com/heatflo

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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 Heat-Flo