Therma-stor

What Therma-stor does

Therma-Stor LLC is a Madison, Wisconsin-based manufacturer founded in 1977 that operates as a portfolio of climate-control and indoor-air-quality brands. The company's core brands include Quest Climate (high-efficiency commercial and industrial refrigerant and desiccant dehumidifiers, notably the Quest 335 with patented multi-coil design and variable-speed pressure-sensing fan), Phoenix Restoration Equipment (water-damage restoration dehumidifiers, air movers, heat drying systems, and HEPA air scrubbers integrated through the DryLINK Bluetooth ecosystem), Anden (humidifiers and dehumidifiers for indoor agriculture), and Origen (atmospheric water generators launched in 2025). Underlying technology centers on advanced heat-transfer and dehumidification engineering, with patented multi-coil refrigerant systems, variable-speed fan control, MERV-13/HEPA filtration, and a growing IoT platform for restoration documentation.

The business model is primarily hardware sales of climate-control equipment across commercial, industrial, agricultural, restoration, residential, and emerging water-generation verticals, supplemented by recurring revenue from replacement filters (MERV-11, MERV-13, MERV-14, HEPA), accessories, and parts. Go-to-market is multi-channel: an owned e-commerce storefront, authorized dealer and wholesaler networks, HVAC contractors, restoration distributors, online retailers, and distribution partnerships (e.g., Sylvane for filters). Pricing is quote-based and not publicly disclosed, with NET 30 terms for established accounts; a 100-pint commercial unit is documented at ~$1,150 with ~$20/month operating cost. The company exited its legacy Heat Recovery Water Heater business (transferred to BouMatic) and discontinued unit repair effective September 1, 2025, signaling consolidation around dehumidification, air quality, and the new atmospheric water generation category. Therma-Stor is privately held, employs 101-250 people, and operates from its Madison headquarters at 4201 Lien Road.

Name

Therma-stor

Legal name

Therma-Stor LLC

Website

https://thermastor.com

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

101–250 employees

Short description

Therma-Stor manufactures high-efficiency commercial, industrial, and restoration dehumidifiers and air-quality equipment through its Quest, Phoenix, Anden, and Origen brands, serving restoration contractors, agriculture, food processing, self-storage, healthcare, and residential customers via dealers, HVAC contractors, and e-commerce.

Ownership category

akta.pro rank

Product category

Dehumidification and indoor air quality equipment

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Air Quality & Filtration Equipment (IAQ) (IMAHAKAI)

akta.pro secondary industries

Humidifier & Dehumidifier Installation & Service (HSAOAIAJ), Disinfection & Remedial Works (Chlorination, Thermal, Shock Treatments) (BPABAJAF)

Keywords

• Industrial dehumidifiers
• Restoration drying equipment
• Atmospheric water generators
• Commercial air filtration
• Indoor air quality

Headquarters

HQ city

Madison

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Climate Control Equipment Sales: Sale of dehumidifiers, humidifiers, air scrubbers, air movers, heat drying systems, and restoration equipment under Quest, Phoenix, and Anden brands for commercial, industrial, agricultural, and restoration applications
2. Filters & Accessories: Replacement filters including MERV-11, MERV-13, MERV-14, HEPA filters, duct kits, hanging brackets, condensate pumps, digital hygrometers, and other accessories
3. Parts & Service Support: Parts sales and tech support for existing products. Note: Effective September 1, 2025, Therma-Stor will no longer offer unit repair.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels5 records

Core offering

Therma-stor manufactures and distributes environmental control equipment — dehumidifiers, humidifiers, water damage restoration drying equipment, air filtration and purification products, and atmospheric water generators — through multiple product brands (Quest, Phoenix, Anden, Origen, Santa Fe) targeting commercial, restoration, indoor-cultivation, hospitality/office, and residential customers. The company also sells supporting accessories such as filters, duct kits, pumps, and remote-monitoring sensors.

Product overview

Therma-Stor is a family of brands manufacturing climate control and indoor air quality products. The portfolio consists of multiple sub-brands: Quest Climate (high-efficiency commercial and industrial dehumidifiers, including the patented multi-coil Quest 335, 506, and 746 series), Phoenix Restoration Equipment (water damage restoration dehumidifiers, air scrubbers, and the DryLINK Bluetooth IoT ecosystem), Anden (humidifiers and dehumidifiers for indoor agriculture), and Origen (atmospheric water generators). Therma-Stor previously offered Heat Recovery Water Heaters but exited that business. The company also offers a full range of accessories including MERV-13/MERV-11/MERV-14/HEPA filters, duct kits, condensate pumps, hanging brackets, and digital hygrometers. Phoenix products are differentiated by the DryLINK ecosystem which integrates with iRestore, Encircle, and Verisk Restoration Manager for automated restoration documentation.

Differentiator

Problem solved

Functional benefit

Products and services

• Quest Commercial/Industrial Dehumidifiers Commercial and industrial-grade dehumidifiers for large-scale facilities including schools, universities, hospitals, hospitality venues, offices, warehouses, and public buildings; incorporates multi-coil design, 110/220 voltage flexibility, and MERV-13 filtration. B2B buyers include facility managers, building engineers, HVAC distributors, and contractors.
• Phoenix Water Damage Restoration Dehumidifiers, Air Scrubbers, and Air Movers Commercial-grade dehumidifiers (including LGR models like 2400-XLI), air scrubbers, and air movers used by water damage restoration contractors and remediation professionals; supports DryLINK remote monitoring for job-site and multi-site management.
• Anden Indoor Cultivation Dehumidifiers Indoor-cultivation-specific dehumidifiers built for resilient plant production across germination, propagation, vegetative, and flowering stages; includes MERV-13 and antimicrobial filtration, IQ compressor technology, and fresh-air ventilation suitable for residential grow rooms up to commercial cultivation operations.
• Origen Atmospheric Water Generator Atmospheric water generation unit that produces on-site water from the air for hospitality venues, restaurants, offices, and event co-working spaces as a sustainability-focused alternative to bottled water supply.
• Santa Fe Residential Humidifiers Residential whole-house, free-standing, compact, and Ultra Series humidifiers (including models with autoCabinet protection and Model 200 "no mess" pad technology) that reduce overly dry household air and improve indoor air quality in dry northern climates.
• DryLINK Remote Monitoring Ecosystem (DryLINK, DrySENSE, DryTAG RH, DryHUB, DPS) Connected monitoring hardware ecosystem (DryLINK connectivity, DrySENSE sensors, DryTAG RH sensors, DryHUB communications, and DPS optional connections) that enables site-based and remote job-site monitoring of dehumidifiers, air scrubbers, and air movers for restoration professionals.
• Replacement Air Filters (MERV-13, antimicrobial, pre-filters) Replacement filters for the company's dehumidifiers and air-quality equipment, including MERV-13 commercial-grade filters and patented antimicrobial filter options sold as accessories.
• Installation Accessories (ducts, duct kits, pumps) Accessory kits including ducting components, duct installation kits, and pumps sold through Therma-stor's e-commerce accessories page to support installation and operation of the company's environmental-control equipment.
• Research Products Brand (Air Cleaning and IAQ) Air-cleaning and indoor air-quality product line formerly under the Research Products/Zephyr brand, now part of the Therma-stor family of environmental-control brands.

Quantifiable outcome

• Quest 335 delivers 335 pints/day at 9.3 KWh - world's most efficient dehumidifier
• +5 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Dewald Academy of DryingcoreStrategic or Co-development Partner · 10 July 2023Phoenix partnered with Dewald Academy to integrate E3 (Estimate, Evaluate, Execute) functionality into DryLINK ecosystem. E3 evaluates jobsite conditions and provides complete control of drying regardless of category, class, or equipment used, with a proven metric for quantifying drying equipment effectiveness.
• iRestorecoreTechnology or Integration · 22 June 2023Phoenix Restoration Equipment integrated DryLINK into iRestore restoration management software. Users can have job information automatically imported into DryLINK with drying reports automatically available in iRestore, streamlining contractor workflows and documentation for insurance claims.
• EncirclecoreTechnology or Integration · 13 September 2022Phoenix DryLINK integrates with Encircle field documentation platform to eliminate double entry of job information. Restoration professionals can automatically push jobs from Encircle to DryLINK and receive drying reports inside Encircle for streamlined documentation.
• PurafilminorStrategic or Co-development Partner · 1 January 2020Collaboration with Purafil (leading global provider of molecular air filtration) to develop Guardian R500 Antimicrobial Filter with patented media that destroys up to 99.49% of target viruses and bacteria using oxidation while removing toxic and harmful gases.
• Research ProductscoreChannel Partner/ Reseller/ DistributorSanta Fe products now supported by sister company Research Products. For product details, support, and warranty information, customers directed to official Santa Fe website (santa-fe-products.com) which is a brand of Research Products.
• BouMaticminorOEM/ Whitelabel/ Licensing PartnerHeat Reclaim tank production taken over by BouMatic following Therma-Stor's decision to exit Heat Reclaim Water Heater business to sharpen focus on dehumidification and climate control solutions.
• SylvaneminorChannel Partner/ Reseller/ DistributorFilters for Quest dehumidifiers available for purchase through distribution partner Sylvane.

Scale indicators5 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Bry-Air: Bry-Air (part of the Pahwa Group) is a leading manufacturer of desiccant dehumidifiers and adsorption products for industrial applications including pharmaceuticals, food processing, and cold storage, directly overlapping Quest's desiccant product line.
• Legend Brands (Dri-Eaz): Legend Brands owns Dri-Eaz, the most direct competitor to Phoenix in water damage restoration dehumidifiers, air movers, and drying equipment. It also markets filters and cleaning chemistry used by the same restoration contractor customer base that buys Phoenix products.
• Munters: Munters is a global specialist in industrial and commercial air treatment, including desiccant and refrigerant dehumidifiers serving the same agriculture, food & beverage, pharmaceutical, and storage applications as Quest. Its moisture control portfolio directly overlaps with Therma-Stor's Quest line.
• Ebac Industrial Products: Ebac manufactures dehumidifiers for commercial, industrial, pool, and consumer markets, competing head-to-head with Quest in commercial/industrial applications and with Therma-Stor's residential offerings. Similar mid-sized, privately held profile.

Broad incumbents

• Trane Technologies: Trane Technologies is a global commercial and industrial HVAC leader with an expanding indoor air quality portfolio. It competes with Therma-Stor in commercial dehumidification and precision humidity control, especially in healthcare, data center, and industrial verticals.
• Carrier Global: Carrier is a global HVAC incumbent with broad commercial, industrial, and residential climate control portfolios. Its air-handling and indoor air quality offerings overlap with Quest dehumidifiers and Phoenix air scrubbers, and Carrier competes on the same commercial specification lists.
• Honeywell International: Honeywell offers a broad portfolio of building technologies including HVAC controls, air quality sensors, and dehumidification products through its Building Automation and Homes & ADI divisions, competing with both Therma-Stor's equipment and its DryLINK sensing/control ecosystem.
• Daikin Applied: Daikin is a global HVAC manufacturer with a strong commercial applied equipment portfolio (chillers, air handlers, DOAS). Its commercial systems compete with Quest's integrated Dehu + DOAS configurations in the same specification-engineering channel.

Emerging players

• AprilAire: AprilAire (part of Madison Industries) manufactures whole-home indoor air quality products including dehumidifiers, air purifiers, and fresh-air ventilation, competing with Therma-Stor's residential Santa Fe line and adjacent to Anden in the humidity-control space.

Regional players

• Calorex: Calorex is a UK- and Mexico-based manufacturer specializing in dehumidifiers for swimming pools, commercial buildings, and industrial applications. It serves similar end-markets to Quest but with primary geographic focus on Europe and Latin America rather than North America.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/therma-stor

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries4 records

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 Therma-stor