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A List of the Popular Tankless Water Heater Manufacturers

A list of tankless water heater manufacturers below consists of the more and less popular tankless brands sold in North America and Europe. Some manufacturers offer only tankless water heaters and combi boilers, while other makers also include other water and space heating types.

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We will cover tankless manufacturers whose products use two of the most popular fuel sources, electric, and gas (natural and propane).

If you want to know who makes the best tankless water heaters use the links on the navigation bar, they are popular and among the best, or see our recommendation of the best models. There is also an article where we compare the best tankless models.

If you find tankless water heater manufacturers that we didn't list here, please let us know. Use the "contact us" form to send us a link.

Tankless water heaters manufacturers

American

AO Smith owns an American water heaters company, and their tankless models are very similar, if not the same.

Address: 1100 E Fairview Ave, Johnson City, TN, 37601-3504

Phone: (423) 434-1500

Web: www.americanwaterheater.com

AO Smith

AO Smith is one of the largest water heating companies in North America. It produces mainly tank-type water heaters and several outdoor and indoor direct-vent models, which use Takagi technology.

Address: 11270 West Park Place, Suite 170. Milwaukee, WI 53224

Phone: (414) 359-4000  

Web: www.hotwater.com

Bosch

Bosch is a German manufacturer of HVAC equipment, including tankless water heaters. Bosch also offers indoor and outdoor models; atmospheric, direct, and power vent; energy-efficient and Energy Star. Junkers is a popular European combi boiler brand and is part of Bosch Group.

Bosch US address: 340 Mad River Park, Waitsfield, Vermont 05673

Phone: (800) 503-5028

Web: www.boschhotwater.com

Bradford White

Bradford White is a water heater manufacturer from the US. Offers outdoor and indoor models; Energy Star qualified.

Address: 725 Talamore Drive, Ambler, PA 19002

Phone: (800) 523-2931

Web: www.bradfordwhite.com

Chronomite Laboratories Inc

Chronomite Laboratories Inc is the manufacturer of electric tankless water heaters.

Address: 17451 Hurley Street, City of Industry, California, USA, 91744

Phone: (800) 447-4962

Web: www.chronomite.com

Eemax

Eemax Inc. is the North American tankless water heater manufacturer of point-of-use and whole-house electric water heaters. Eemax heaters are designed for residential and commercial applications.

Address: 353 Christian Street, Oxford, CT 06478

Phone: (800) 543-6163

Web: www.eemaxinc.com

GE

AO Smith is the manufacturer of GE gas tankless water heaters.

Phone:(800) 848-7620

Web: www.geappliances.com

Hubbell

Hubbell is the producer of the whole-house electric water heaters.

Address: P.O.Box 288, Stratford, CT 06615-0288

Phone: (800) 647-3165

Web: www.hubbellheaters.com

Navien

Navien is a Korean manufacturer of tankless water heaters, and in the US, they sell condensing water heaters designed for residential and commercial applications. There are also gas combi water heaters for home heating.

Navien US address: 1371 Santa Fe Drive, Tustin, CA 92780

Phone: (800) 519-8794

Web: www.navienamerica.com

Noritz

Noritz is a tankless water heater manufacturer from Japan. Noritz offers indoor and outdoor models; atmospheric, direct, and power vent; energy-efficient, Energy Star, and condensing tankless water heaters. The company headquarters is in California and branches in Dallas, Chicago, Atlanta, and New York.

Noritz US address: 11160 Grace Avenue, Fountain Valley, CA 92708

Phone: (714) 433-2905

Web: www.noritz.com

Paloma

Japanese water heater manufacturer. Paloma produces indoor and outdoor models; atmospheric, direct, and power vent; energy-efficient, and EnergyStar tankless water heaters. They are designed for residential and commercial applications.

Paloma US address: 2151 Eastman Avenue, Oxnard, CA 93030

Phone: (805) 278-5499

Web: www.palomatankless.com

Rheem/Ruud

Rheem and Ruud are North American water heating companies and their parent company is Paloma Industries. Rheem manufactures indoor and outdoor models; atmospheric, direct, and power vent; energy-efficient and Energy Star tankless water heaters.

Address: 101 Bell Road, Montgomery, Alabama 36117

Phone: (334) 260-1500

Web: www.rheem.com

Rinnai

Rinnai is a Japanese manufacturer of gas tankless water heaters. Rinnai produces both residential and commercial gas appliances, indoor, outdoor, Energy Star, direct, atmospheric, and power vent models.

Rinnai US address: 103 International Drive, Peachtree City, GA, 30269

Phone: (800) 621-9419

Web: www.rinnai.us

Seisco

Seisco is a manufacturer of electric on-demand water heaters.

Address: 241 West Airtex, Houston, TX. 77090

Phone: (888) 296-9293

Web: www.seisco.com

State

The parent company is AO Smith. The State is a producer of heating appliances, including on-demand gas water heaters, which are very similar to Takagi/AO Smith tankless water heaters.

Address: 500 Tennessee Waltz Pkwy, Ashland City, TN 37015

Phone: (800) 365-8170

Web: www.statewaterheaters.com

Stiebel Eltron

Stiebel Eltron is the largest German water heating company that is well-known for its point-of-use and whole-house tankless electric water heaters. Tempra tankless model is one of the most popular models in North America.

Stiebel Eltron US address: 17 West Street, West Hatfield, MA 01088

Phone: (800) 582-8423

Web: www.stiebel-eltron-usa.com

Takagi

Japanese water heater manufacturer. Takagi offers indoor and outdoor models; atmospheric, direct, and power vent; energy-efficient, EnergyStar, and condensing tankless water heaters. Heaters are designed for light residential and heavy-duty commercial applications.

Takagi US address: 500 Tennessee Waltz Parkway, Ashland City, TN 37015

Phone: (888) 882-5244

Web: www.takagi.com

Web: www.takagi.com

Titan

Titan is a producer of electric tankless water heaters.

Address: 14629 SW 104 St#134, Miami, FL 33186

Phone: (888) 697-8456

Web: www.titanheater.com

European boiler and tankless water heater manufacturers

Alpha

Alpha heating solution - UK-based combi boiler manufacturer, part of the leading Italian manufacturer of combi boilers, Immergas group.

Address: Nepicar House, London Road, Wrotham Heath, Seven Oaks, Kent, United Kingdom, TN15 7RS

Phone: 01732 783 000

Web: www.alpha-boilers.com

Ariston

Italian manufacturer of combi boilers and water heaters.

Address: Viale Aristide Merloni, 45, 60044 Fabriano (AN), Italy

Web: www.aristonthermo.com

Baxi Group

UK-based producer of water heaters and combi boilers.

Address: 16 Stanier Way, The Wyvern Business Park, Derby, DE21 6BF, United Kingdom

Web: www.baxigroup.com

Biasi

Biasi is an Italian company of gas boilers and heating appliances.

Address: via Leopoldo Biasi, 1 - 37135 Verona

Phone: (+39) 045/8090111

Web: www.biasi.it

Ferroli - Italy

Address: Via Ritonda 78/a - 37047 San Bonifacio (VR)

Phone: (+045) 6139411

Web: www.gruppoferroli.com

Immergas

Immergas - Italian leader in the heating industry. Designs and manufactures instantaneous water heaters, condensing, and combi boilers.

Address: Via Cisa Ligure 95, 42041 Brescello (RE) Italy

Phone: (+39) 0522/689450

Web: www.immergas.com

Vaillant

Vaillant - probably the most popular boiler and tankless water heater manufacturer in Europe.

Address: Head Office, Nottingham Road, Belper DE56 1JT

Phone: 01773 824141

Web: www.vaillant-group.com

Viessmann

Viessmann offers various heating devices.

Address: Viessmannstrasse 1, 35108 Allendorf (Eder)

Phone: (+49) 6452 70-0

Web: www.viessmann.com

Worcester

Address: Worcester, Bosch Group, Cotswold Way, Warndon, Worcester, WR4 9SW, UK

Phone: 0844 892 3000

Web: www.worcester-bosch.co.uk

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