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    Top Sellers
Best Seller
Performance 40 Gal. Tall 36,000 BTU Natural Gas Water Heater with 6-Year WarrantyPerformance 40 Gal. Tall 36,000 BTU Natural Gas Water Heater with 6-Year Warranty
Expert Installation Available
(4.4 / 13343)
Model# XG40T06EC36U1
$579.00
Buy 3 or more $521.10
Top Rated
Performance 40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater with 6-Year WarrantyPerformance 40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater with 6-Year Warranty
Expert Installation Available
(4.2 / 2825)
Model# XG40T06EN38U1
$739.00
Buy 3 or more $665.10
Top Rated
Performance Plus 40 Gal. Tall 38,000 Ultra Low NOx (ULN) Natural Gas Water Heater with 9-Year WarrantyPerformance Plus 40 Gal. Tall 38,000 Ultra Low NOx (ULN) Natural Gas Water Heater with 9-Year Warranty
Expert Installation Available
(4.2 / 2825)
Model# XG40T09EN38U1
$839.00
Buy 3 or more $755.10
Top Rated
Performance Platinum 40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater with 12-Year WarrantyPerformance Platinum 40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater with 12-Year Warranty
Expert Installation Available
(4.2 / 2825)
Model# XG40T12EN38U1
$939.00
Buy 3 or more $845.10
40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater with 3-Year Warranty
Expert Installation Available
(3.9 / 21)
Model# SCG40T03UN38U1
$729.00
Buy 3 or more $656.10
Performance Platinum 40 Gal. Tall 12-Year 38,000 BTU Ultra Low NOx (ULN) Powered Damper Natural Gas Water HeaterPerformance Platinum 40 Gal. Tall 12-Year 38,000 BTU Ultra Low NOx (ULN) Powered Damper Natural Gas Water Heater
Expert Installation Available
(3.6 / 156)
Model# XG40T12DU38U2
$999.00
Buy 3 or more $899.10
Performance 40 Gal. Tall 36,000 BTU Natural Gas Water Heater with Top T and P Valve and 6-Year WarrantyPerformance 40 Gal. Tall 36,000 BTU Natural Gas Water Heater with Top T and P Valve and 6-Year Warranty
Expert Installation Available
(3.7 / 32)
Model# XG40T06TC36U1
$599.00
Buy 3 or more $539.10
Greentherm T9900 SE 160 - 9 GPM Residential Natural Gas and/or Liquid Propane High Efficiency Gas Tankless Water Heater
(2.2 / 5)
Model# 7736503730
Limit 3 per order
$2,079.33
Buy 3 or more $1,871.40
Performance 40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater w/ Top T & P Valve and 6-Year WarrantyPerformance 40 Gal. Tall 38,000 BTU Ultra Low NOx (ULN) Natural Gas Water Heater w/ Top T & P Valve and 6-Year Warranty
Expert Installation Available
(4.3 / 6)
Model# XG40T06TN38U1
$749.00
Buy 3 or more $674.10
Greentherm T9900 SE 199 - 11.2 GPM Residential Natural Gas or Liquid Propane High Efficiency Gas Tankless Water Heater
(2.2 / 5)
Model# 7736503731
$2,363.05
Buy 3 or more $2,126.75
Greentherm T9800 SEO160 - 9 GPM Residential Natural Gas Liquid Propane High Efficiency Outdoor Gas Tankless Water Heater
(2 / 1)
Model# 7736503726
$1,630.77
Buy 3 or more $1,467.69
Greentherm T9800 SEO 199 - 11.2 GPM Residential Natural Gas or Liquid Propane Outdoor Gas Tankless Water Heater
(2 / 1)
Model# 7736503727
$1,885.00
Buy 3 or more $1,696.50