Tankless water heater manufacturer listing below consists of the popular and less-known tankless brands, sold in North America and Europe. Some manufacturers offer only tankless water heaters and combi boilers while other makers also include other types for water and space heating.
We will cover tankless
manufacturers whose products are
using two, the most popular fuel sources, electric and gas
(natural and propane).
For the question; "who makes the best tankless water heater",
links on the navigation bar, these brands are the most popular ones, or
see our recommendation of the best models.
There is also an article where we compare the best
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.
Help us to expand the list!
American water heaters is owned by AO Smith and its tankless heaters are very similar, if not the same as AO Smith tankless models.
Address: 1100 E Fairview Ave, Johnson City, TN, 37601-3504
Phone: (423) 434-1500
AO Smith Co. is one of the largest water heating companies in North America with the focus on tank type models and with several outdoor and indoor, direct vent tankless models also.
Address: 11270 West Park Place, Suite 170. Milwaukee, WI 53224
Phone: (414) 359-4000
Bosch is a German tankless water heater manufacturer that produces HVAC equipment. Bosch also offers indoor and outdoor models; atmospheric, direct and power vent; energy efficient and Energy Star. Junkers is 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
Read our Bosch tankless water heater review.
Bradford White - gas tankless water heater manufacturer from US. Offers outdoor and indoor models; Energy Star qualified.
Address: 725 Talamore Drive, Ambler, PA 19002
Phone: (800) 523-2931
Chronomite Laboratories Inc - manufacturer of electric tankless water heaters.
Address: 17451 Hurley Street, City of Industry, California, USA, 91744
Phone: (800) 447-4962
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
GE gas tankless water heaters are produced by AO Smith Co.
Hubbell water heater - producer of the whole-house electric water heaters
Address: P.O.Box 288, Stratford, CT 06615-0288
Phone: (800) 647-3165
Navien is a Korean manufacturer of tankless water heaters and in 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
Noritz is the 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. 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
Read our Noritz
water heater review.
Paloma - Japanese water heater manufacturer. Paloma produces indoor and outdoor models; atmospheric, direct and power vent; energy efficient and EnergyStar tankless water heaters. Designed for residential and commercial applications.
Paloma US address: 2151 Eastman Avenue, Oxnard, CA 93030
Phone: (805) 278-5499
Read our Paloma water heater review.
Rheem/Ruud - North American water heating company owned by Paloma Industries. Rheem manufactures indoor and outdoor models; atmospheric, direct and power vent; energy efficient and Energy Star tankless water heaters. By its design they are similar to Paloma tankless water heaters.
Address: 101 Bell Road, Montgomery, Alabama 36117
Phone: (334) 260-1500
Read our Rheem tankless water heaters review
Rinnai is the 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
Read our Rinnai tankless water heaters review.
Seisco - electric on-demand water heater manufacturer.
Address: 241 West Airtex, Houston, TX. 77090
Phone: (888) 296-9293
State Water Heaters - parent company is AO Smith. The on-demand gas water heaters are very similar to the tankless water heaters of its parent company.
Address: 500 Tennessee Waltz Pkwy, Ashland City, TN 37015
Phone: (800) 365-8170
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
Takagi - Japanese water heater manufacturer. Takagi offers indoor and outdoor models; atmospheric, direct and power vent; energy efficient, EnergyStar and condensing tankless water heaters. Designed for light residential and heavy duty commercial applications.
Takagi US address: 5 Whatney, Irvine, CA 92618
Phone: (888) 882-5244
Titan offers electric tankless water heaters.
Address: 14629 SW 104 St#134, Miami, FL 33186
Phone: (888) 697-8456
Alpha heating solution - UK based combi boiler manufacturer, part of the Italian leading manufacturer of combi boilers, Immergas group.
Address: Nepicar House, London Road, Wrotham Heath, Seven oaks, Kent, United Kingdom, TN15 7RS
Phone: 01732 783 000
Ariston - Italian manufacturer of combi boilers and water heaters.
Address: Viale Aristide Merloni, 45, 60044 Fabriano (AN), Italy
Baxi Group - UK based producer of water heaters and combi boilers.
Address: 16 Stanier Way, The Wyvern Business Park, Derby, DE21 6BF, United Kingdom
Biasi - Italy
Address: via Leopoldo Biasi, 1 - 37135 Verona
Phone: (+39) 045/8090111
Ferroli - Italy
Address: Via Ritonda 78/a - 37047 San Bonifacio (VR)
Phone: (+045) 6139411
Immergas - Italian leader in heating industry. Designs and manufactures instantaneous water heaters, condensing boilers, combi boilers.
Address: Via Cisa Ligure 95, 42041 Brescello (RE) Italy
Phone: (+39) 0522/689450
Vaillant - probably the most popular boiler and tankless water heater manufacturer in Europe.
Address: Head Office, Nottingham Road, Belper DE56 1JT
Phone: 01773 824141
Viessmann - high quality German tankless water heater manufacturer.
Address: Viessmannstrasse 1, 35108 Allendorf (Eder)
Phone: (+49) 6452 70-0
Worcester Gas Boilers - UK
Address: Worcester, Bosch Group, Cotswold Way, Warndon, Worcester,
Phone: 0844 892 3000