#1 Home Improvement Retailer

Cart

Cart

Home
Plumbing
Water Heaters
Tankless Water Heaters

Highly Rated Indoor Tankless Water Heaters

Shop highly rated products based on our customer reviews
127 Results
Filters
Filters
Clear All

Get It Fast

caret-icon

Department

caret-icon
Tankless Water Heaters

Brand

caret-icon

Price

caret-icon
to

Review Rating

caret-icon
54 & Up3 & Up2 & Up1 & Up0

Number of Showers

caret-icon

Required Volt Connection

caret-icon

Part Warranty

caret-icon

Flow Rate @ 35°F Rise (gallons/min)

caret-icon

Application Type

caret-icon

Indoor/Outdoor

caret-icon

BTU Rating

caret-icon

Wattage (watts)

caret-icon

Eco Friendly

caret-icon

Let Us Do It For You

caret-icon

Savings Center

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 / 507)
Model# ECOH200DVELN-3
$1,199.00
Buy 3 or more $1,079.10
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 / 220)
Model# RX199iN
Limit 3 per order
$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 / 72)
Model# RXP199iN
Limit 3 per order
$1,778.00
High Efficiency Non-Condensing 8.5 GPM Residential 180,000 BTU Interior Natural Gas Tankless Water HeaterHigh Efficiency Non-Condensing 8.5 GPM Residential 180,000 BTU Interior Natural Gas Tankless Water Heater
Expert Installation Available
(4.4 / 52)
Model# RE180iN
$1,024.38
Was $1,138.20
Save $113.82 (10%)
Buy 3 or more $921.94
Top Rated
Performance Platinum 8.4 GPM Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water HeaterPerformance Platinum 8.4 GPM Super High Efficiency Indoor or Outdoor Natural Gas Tankless Water Heater
Expert Installation Available
(4.2 / 118)
Model# ECOH160DVLN-3
$1,137.99
Buy 3 or more $1,024.19
High Efficiency 7.5 GPM Residential 180,000 BTU Natural Gas Interior Tankless Water Heater
Expert Installation Available
(4.3 / 589)
Model# V75iN
Limit 10 per order
$899.99
Was $993.40
Save $93.41 (9%)
Buy 3 or more $809.99
Sensei Super High Efficiency Plus 10 GPM 180,000 BTU Natural Gas/Propane Indoor/Outdoor Tankless Water Heater
Expert Installation Available
(4.5 / 220)
Model# RX180iN
Limit 3 per order
$1,348.00
Buy 3 or more $1,213.20
Performance Plus 8.4 GPM Smart Non-Condensing Indoor Natural Gas Tankless Water HeaterPerformance Plus 8.4 GPM Smart Non-Condensing Indoor Natural Gas Tankless Water Heater
Expert Installation Available
(4 / 245)
Model# ECO180DVELN-3
$857.70
Buy 3 or more $771.93
Tempra 24 Plus Adv Flow Control and Self-Modulating 24 kW 4.68 GPM Residential Electric Tankless Water Heater
(4.6 / 394)
Model# Tempra 24 Plus
$624.00
Buy 3 or more $561.60
Performance Plus 7.0 GPM Non-Condensing Indoor Natural Gas Tankless Water HeaterPerformance Plus 7.0 GPM Non-Condensing Indoor Natural Gas Tankless Water Heater
Expert Installation Available
(4 / 138)
Model# ECO160DVLN-3
$799.00
Buy 3 or more $719.10
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
$1,253.04
Buy 3 or more $1,127.74
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 / 181)
Model# ECOH180DVELN-3
$1,235.84
Buy 3 or more $1,112.26