#1 Home Improvement Retailer

Cart

Cart

Home
Plumbing
Water Heaters
Tankless Water Heaters
Tankless Gas Water Heaters

Tankless Gas Water Heaters

Shop Products We Install

Shop Products We Install

Rheem

Rheem

Rinnai

Rinnai

Super High

Super High

Natural Gas

Natural Gas

Propane

Propane

30 Results
Filters
Filters
Clear All

Get It Fast

caret-icon

Department

caret-icon
Tankless Gas Water Heaters

Review Rating

caret-icon
54 & Up3 & Up2 & Up1 & Up

Brand

caret-icon

Price

caret-icon
to

Gas Type

caret-icon

Number of Showers

caret-icon

Efficiency Level

caret-icon

Maximum Flow Rate (gallons per minute)

caret-icon

Water Heater Features

caret-icon

BTU Rating

caret-icon

Indoor/Outdoor

caret-icon

Eco Friendly

caret-icon

Let Us Do It For You

caret-icon

    Sort by

    Top Sellers
Top Rated
Performance Platinum 9.5 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water HeaterPerformance Platinum 9.5 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater
Expert Installation Available
(4.1 / 508)
Model# ECOH200DVELN-3
$1,199.00
Buy 3 or more $1,079.10
IKONIC 11.2 GPM Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water HeaterIKONIC 11.2 GPM Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater
Expert Installation Available
(3.8 / 13)
Model# ECOHS200iN
Limit 3 per order
$1,529.00
Was $1,799.00
Save $270.00 (15%)
Buy 3 or more $1,376.10
Performance Plus 9.5 GPM Smart Non-Condensing Indoor Natural Gas Tankless Water HeaterPerformance Plus 9.5 GPM Smart Non-Condensing Indoor Natural Gas Tankless Water Heater
Expert Installation Available
(4 / 172)
Model# ECO200DVELN-3
$1,089.00
Buy 3 or more $980.10
IKONIC 11.2 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater with RecirculationIKONIC 11.2 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater with Recirculation
Expert Installation Available
(3.8 / 17)
Model# ECOHSR200iN
Limit 3 per order
$1,784.00
Was $2,099.00
Save $315.00 (15%)
Buy 3 or more $1,605.60
Performance Plus 9.5 GPM Smart Non-Condensing Outdoor Natural Gas Tankless Water HeaterPerformance Plus 9.5 GPM Smart Non-Condensing Outdoor Natural Gas Tankless Water Heater
Expert Installation Available
(4.5 / 162)
Model# ECO200XELN-3
$1,140.33
Buy 3 or more $1,026.30
Best Seller
Sensei Super High Efficiency Plus 11 GPM 199,000 BTU Natural Gas/Propane Indoor/Outdoor Tankless Water Heater
Expert Installation Available
(4.5 / 222)
Model# RX199iN
$1,537.90
Sensei Super High Efficiency Plus 11 GPM 199,000 BTU Natural Gas/Propane Tankless Water Heater with Recirculating Pump
Expert Installation Available
(4.3 / 74)
Model# RXP199iN
$1,778.00
Sensei Super High Efficiency Plus 10 GPM 180,000 BTU Natural Gas/Propane Indoor/Outdoor Tankless Water Heater
Expert Installation Available
(4.5 / 222)
Model# RX180iN
$1,348.00
Buy 3 or more $1,213.20
Performance Platinum 9.5 GPM Smart Super High Efficiency Indoor or Outdoor Liquid Propane Tankless Water HeaterPerformance Platinum 9.5 GPM Smart Super High Efficiency Indoor or Outdoor Liquid Propane Tankless Water Heater
Expert Installation Available
(4.1 / 146)
Model# ECOH200DVELP-3
$1,306.94
Buy 3 or more $1,176.25
Top Rated
Performance Platinum 9.0 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water HeaterPerformance Platinum 9.0 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater
Expert Installation Available
(4.2 / 182)
Model# ECOH180DVELN-3
$1,143.54
Buy 3 or more $1,029.19
High Efficiency Non-Condensing 9.8 GPM Residential 199,000 BTU Interior Natural Gas Tankless Water HeaterHigh Efficiency Non-Condensing 9.8 GPM Residential 199,000 BTU Interior Natural Gas Tankless Water Heater
Expert Installation Available
(4.4 / 53)
Model# RE199iN
Limit 10 per order
$1,202.67
Was $1,336.30
Save $133.63 (10%)
Buy 3 or more $1,082.40
IKONIC 10.1 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater with RecirculationIKONIC 10.1 GPM Smart Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater with Recirculation
Expert Installation Available
(3.8 / 17)
Model# ECOHSR180iN
Limit 3 per order
$1,659.00
Was $1,949.00
Save $290.00 (15%)
Buy 3 or more $1,493.10