TWHB

Lochinvar Tankless Water Heaters

Explore Lochinvar’s technology, innovation and top-rated collections

Introduction

Brand History
Lochinvar has been a leading manufacturer of high-efficiency water heating and space heating solutions since 1919, with over 100 years of experience in the industry. The company has built a strong reputation for commercial and residential water heating systems, particularly known for their innovative boiler and water heater technologies.
Reputation
Lochinvar is highly regarded in the HVAC industry for producing reliable, efficient, and durable water heating equipment. They are particularly respected by contractors and engineers for their commercial-grade quality and comprehensive technical support.
Specialization
Lochinvar specializes in high-efficiency condensing tankless water heaters, commercial boilers, and integrated heating systems. They focus heavily on energy-efficient solutions for both residential and commercial applications, with particular strength in larger capacity units.

Technologies & Innovation

Proprietary Features
Lochinvar tankless units feature SMART SYSTEM operating controls, stainless steel heat exchangers, and advanced modulation technology. Their units include integrated recirculation pumps, advanced diagnostics, and self-calibrating systems for optimal performance.
Energy Efficiency
Lochinvar tankless water heaters achieve up to 96% thermal efficiency with condensing technology. They feature precise modulation from 15% to 100% capacity, ensuring optimal fuel usage and reduced energy waste across varying demand levels.
Smart Controls
SMART SYSTEM controls provide advanced diagnostics, remote monitoring capabilities, and smartphone connectivity through their mobile app. The system includes predictive maintenance alerts, performance optimization, and detailed energy usage tracking.
Certifications
Lochinvar units are ENERGY STAR certified and meet AHRI standards. They comply with ultra-low NOx emissions requirements and are certified for use in all major North American markets with appropriate safety and efficiency certifications.

Best Use Cases

Residential Use
Ideal for larger homes with high hot water demand, multi-family residences, and luxury applications where consistent performance is critical. Well-suited for homes requiring multiple simultaneous hot water uses and those prioritizing long-term reliability.
Commercial Use
Excellent for restaurants, hotels, healthcare facilities, schools, and office buildings. Particularly strong in applications requiring high-capacity, continuous hot water supply with minimal maintenance requirements and maximum uptime.
Climate Compatibility
Designed to perform reliably in various climates with freeze protection and outdoor installation options. Units are engineered to maintain efficiency in cold weather conditions and include advanced venting systems for different installation environments.
Installation Types
Suitable for both indoor and outdoor installations with flexible venting options. Compatible with existing gas lines and can be installed in mechanical rooms, basements, or outdoor locations with appropriate weather protection.

Why Choose Lochinvar?

Unique Selling Points
Lochinvar offers commercial-grade reliability in residential applications, exceptional build quality with stainless steel components, and comprehensive technical support. Their units feature longer lifespan expectations and superior performance consistency compared to many competitors.
Comparative Advantages
Superior build quality and durability, extensive dealer network with professional installation support, and strong focus on larger capacity units. Lochinvar provides better commercial application support and has a proven track record in demanding environments.
Warranty
Lochinvar offers comprehensive warranty coverage including 12-15 years on heat exchangers for residential units and 5-10 years on parts. Commercial units receive tailored warranty packages, and the company provides strong warranty support through their dealer network.

Lochinvar Best Sellers

ImageProduct NameSKUList PriceLow PriceReviewsRatingAction
EcoSmart Electric Tankless Water Heater Eco 11 - Lochinvar Tankless Water HeaterEcoSmart Electric Tankless Water Heater Eco 117518328603500429114$189.994524.2/5View Details
A.O. Smith Signature Series Tankless Water Heater GT15-240-NI - Lochinvar Tankless Water HeaterA.O. Smith Signature Series Tankless Water Heater GT15-240-NI8278911865008573754$869.00724/5View Details
Rinnai RE180IN 180K BTU 8.5 GPM Natural Gas Tankless Water Heater - Lochinvar Tankless Water HeaterRinnai RE180IN 180K BTU 8.5 GPM Natural Gas Tankless Water Heater3407974351206940498$1,212.40364.4/5View Details
Optimal 18KW Electric Tankless Water Heater Opti 18 - Lochinvar Tankless Water HeaterOptimal 18KW Electric Tankless Water Heater Opti 186164037591825254086$629.00264.8/5View Details
Camplux 3.18 GPM Indoor Propane Tankless Water Heater with Wall Thimble - Lochinvar Tankless Water HeaterCamplux 3.18 GPM Indoor Propane Tankless Water Heater with Wall Thimble12191904245852560582$365.49134.4/5View Details
Lochinvar Squire Indirect Water Heater SIT040 - Lochinvar Tankless Water HeaterLochinvar Squire Indirect Water Heater SIT0404192306647968024190$1,616.50124/5View Details
Lochinvar NKC110N 110000 BTU Noble Fire Tube Combi Boiler - Lochinvar Tankless Water HeaterLochinvar NKC110N 110000 BTU Noble Fire Tube Combi Boiler8848871129088220161$3,125.16112.8/5View Details
Optimal 12 Plus Smart WiFi App Control Electric Tankless Water Heater - Lochinvar Tankless Water HeaterOptimal 12 Plus Smart WiFi App Control Electric Tankless Water Heater9042890301108621223$599.00105/5View Details
Optimal Smart Electric Tankless Water Heater Opti27 - Lochinvar Tankless Water HeaterOptimal Smart Electric Tankless Water Heater Opti27813747148736146180$729.0094.9/5View Details
Lochinvar WHB199N Knight Fire Tube - Lochinvar Tankless Water HeaterLochinvar WHB199N Knight Fire Tube7302294483785094838$6,402.1344.8/5View Details
Lochinvar NKC199N 199000 BTU Noble Fire Tube Combi Boiler - Lochinvar Tankless Water HeaterLochinvar NKC199N 199000 BTU Noble Fire Tube Combi Boiler3170123147373168526$3,703.5034.7/5View Details
Lochinvar CWN225PM-F9 Atmospheric Gas Water Heater - Lochinvar Tankless Water HeaterLochinvar CWN225PM-F9 Atmospheric Gas Water Heater15173605702679325305$3,996.8915/5View Details
Lochinvar CWN399PMF9 Commercial Natural Gas Water Heater - Lochinvar Tankless Water HeaterLochinvar CWN399PMF9 Commercial Natural Gas Water Heater3912218930364292156$5,161.7515/5View Details
Lochinvar CWN0315PM Commercial Natural Gas Water Heater - Lochinvar Tankless Water HeaterLochinvar CWN0315PM Commercial Natural Gas Water Heater17565454154680005137$4,585.4615/5View Details
Lochinvar CWN747PM Copper-Fin 745 Input MBtu Commercial Natural Gas Water Heater - Lochinvar Tankless Water HeaterLochinvar CWN747PM Copper-Fin 745 Input MBtu Commercial Natural Gas Water Heater15446397638261556464$10,457.1415/5View Details
Lochinvar Copper-Fin Low NOx Heater ERN-252-A - Lochinvar Tankless Water HeaterLochinvar Copper-Fin Low NOx Heater ERN-252-A12511916202651587918$3,329.1215/5View Details
Lochinvar 199 MBH Indoor Condensing Propane Tankless Water Heater - Lochinvar Tankless Water HeaterLochinvar 199 MBH Indoor Condensing Propane Tankless Water Heater15308445856166831017$1,695.71/5View Details
Lochinvar Armor High Efficiency Water Heater AWN151PM - Lochinvar Tankless Water HeaterLochinvar Armor High Efficiency Water Heater AWN151PM13824311398131403456$7,353.00/5View Details
Lochinvar Water Heater 100208630 - Lochinvar Tankless Water HeaterLochinvar Water Heater 10020863010811900097298690655$43.93/5View Details
Lochinvar AWH0400N-PM Armor 399 Input MBtu 99% AFUE - Commercial Natural Gas Condensing Water Heater - Direct Vent (Pump Supplied) - Lochinvar Tankless Water HeaterLochinvar AWH0400N-PM Armor 399 Input MBtu 99% AFUE - Commercial Natural Gas Condensing Water Heater - Direct Vent (Pump Supplied)17428573568785511886$16,201.00/5View Details
Lochinvar AWH0400NPM 399,000 BTU Armor Condensing Commercial Water Heater (Natural Gas) | SupplyHouse.com - Lochinvar Tankless Water HeaterLochinvar AWH0400NPM 399,000 BTU Armor Condensing Commercial Water Heater (Natural Gas) | SupplyHouse.com13942671191979014580$15,567.80/5View Details
Residential Lochinvar Powerful Heating Efficient Performance - Lochinvar Tankless Water HeaterResidential Lochinvar Powerful Heating Efficient Performance577741921075705728$1,265.59/5View Details
Lochinvar 201k Btu 3" Flue Integrated Pump - Lochinvar Tankless Water HeaterLochinvar 201k Btu 3" Flue Integrated Pump17086782709159100093$9,081.21/5View Details
AWN286PM Lochinvar Asme Armor Condensing Water Heater 285,000BTU 4IN Pvc Flue, Up to 98% Efficient 100133752 - Lochinvar Tankless Water HeaterAWN286PM Lochinvar Asme Armor Condensing Water Heater 285,000BTU 4IN Pvc Flue, Up to 98% Efficient 1001337523004120687070007597$11,185.97/5View Details
Lochinvar Residential PVN04040 - Lochinvar Tankless Water HeaterLochinvar Residential PVN0404016883200646293313513$2,629.46/5View Details
Lochinvar CWN270PM-F9 Atmospheric Gas Water Heater - Lochinvar Tankless Water HeaterLochinvar CWN270PM-F9 Atmospheric Gas Water Heater8035981409990067221$4,266.06/5View Details
Lochinvar Residential JEA040KD - Lochinvar Tankless Water HeaterLochinvar Residential JEA040KD16924221937402052113$1,178.92/5View Details
AWN201PM Lochinvar Armor Condensing Water Heater 201,000 Btu 3IN Flue Pump Mounted 100352805 - Lochinvar Tankless Water HeaterAWN201PM Lochinvar Armor Condensing Water Heater 201,000 Btu 3IN Flue Pump Mounted 1003528056270819467075377110$9,634.14/5View Details
Lochinvar LTCPA80 - Lochinvar Tankless Water HeaterLochinvar LTCPA802778010094968258888$2,015.02/5View Details
Lochinvar Solution CBN399 Copper Fin Water Boiler - Lochinvar Tankless Water HeaterLochinvar Solution CBN399 Copper Fin Water Boiler16137908883149982124$6,104.70/5View Details
Lochinvar & A.O. Smith GCRL-40 Short Natural Gas Water Heater - Lochinvar Tankless Water HeaterLochinvar & A.O. Smith GCRL-40 Short Natural Gas Water Heater18264717733900772137$1,354.39/5View Details
Lochinvar Water Heater 100304186 - Lochinvar Tankless Water HeaterLochinvar Water Heater 10030418617981020333741284814$52.29/5View Details
Lochinvar Light Duty Commercial Water Heater - Lochinvar Tankless Water HeaterLochinvar Light Duty Commercial Water Heater17474918158609512336$4,265.49/5View Details
Lochinvar CWN1797PM Copper-Fin 1795 Input MBtu Commercial Natural Gas Water Heater - 5 Year Warranty - Lochinvar Tankless Water HeaterLochinvar CWN1797PM Copper-Fin 1795 Input MBtu Commercial Natural Gas Water Heater - 5 Year Warranty1836749410127370837$17,905.78/5View Details
Lochinvar Water Heater 100143218 - Lochinvar Tankless Water HeaterLochinvar Water Heater 1001432186640476459143828207$4,769.88/5View Details
Les-40B DJK Lochinvar 40 Gallon Short Electric Water Heater - Lochinvar Tankless Water HeaterLes-40B DJK Lochinvar 40 Gallon Short Electric Water Heater16985211132074680395$1,058.68/5View Details
Lochinvar Water Heater 100278107 - Lochinvar Tankless Water HeaterLochinvar Water Heater 1002781073983622422738639393$43.93/5View Details
Lochinvar Residential LTL07575 - Lochinvar Tankless Water HeaterLochinvar Residential LTL075754876720045188191867$2,462.25/5View Details
Lochinvar 100 Gallon Commercial Water Heater CGN200100 - Lochinvar Tankless Water HeaterLochinvar 100 Gallon Commercial Water Heater CGN20010012775234000158479070$7,759.32/5View Details
LOCHINVAR ARMOR CONDENSING WATER HEATER - Lochinvar Tankless Water HeaterLOCHINVAR ARMOR CONDENSING WATER HEATER6876930245556616177$8,813.74/5View Details

Lochinvar Collections

EZ Series

Designed for fast and easy tankless upgrades, featuring top-mounted connections that simplify replacement of traditional tank water heaters.

Released: 2019-05-15

Key Features

  • High-efficiency condensing (96% UEF)
  • 25-year heat exchanger warranty

NRCR Series

Flagship recirculation line with built-in pump providing instant hot water to every fixture.

Released: 2020-11-01

Key Features

  • Dual stainless heat exchangers
  • Wi-Fi compatibility
  • Intelligent recirculation

NRC Series

Dependable condensing units offering high output and excellent thermal efficiency, up to 9.8 GPM.

Released: 2018-08-20

Key Features

  • Compact to heavy-duty models
  • Long-lasting dual exchanger

ecoTOUGH Series

Eco-friendly line meeting stricter emissions and efficiency standards, ideal for green installs.

Released: 2021-03-10

Key Features

  • Low NOx emissions
  • ENERGY STAR certified

ProTOUGH Series

Built for contractors with rugged commercial-grade components and extended warranties.

Released: 2022-01-05

Key Features

  • Commercial-grade construction
  • Extended warranty options

ValueSolutions Series

Budget-friendly, non-condensing models offering reliable performance without premium price.

Released: 2017-06-12

Key Features

  • Lower upfront cost
  • Proven Noritz quality

NCC Series

Commercial cascade lineup handling up to 199,900 BTU for large-scale hot water demands.

Released: 2019-09-30

Key Features

  • Cascadable for higher capacity
  • Robust commercial output

NRCB Series

Combination boiler units delivering both space heating and domestic hot water in one compact package.

Released: 2020-07-22

Key Features

  • Space heating + DHW
  • High efficiency condensing