Bradford White Tankless Water Heaters

Bradford White tankless water heaters are condensing and non condensing on demand gas water heating units sold under the INFINITI product line, covering indoor and outdoor installation configurations for residential and commercial applications. Bradford White tankless water heaters eliminate the standby heat loss of a storage tank by firing only when a hot water demand is detected, delivering flow rates ranging from 7 GPM to 9.7 GPM depending on the series and model. All condensing series in the Bradford White INFINITI line feature segmented burners with a 22:1 turn down ratio, ENERGY STAR qualification, and compliance with the Ultra Low NOx requirement of 14 ng/J. The INFINITI lineup spans four current condensing series, including the K Series, L Series, GR Series, and GS Series, plus legacy High Efficiency and Mid Efficiency models, each differing in heat exchanger configuration, recirculation capability, and installation flexibility. For a plumbing contractor specifying a tankless unit for a whole house replacement or multi zone hot water system, understanding which INFINITI series fits the job's recirculation requirement, venting configuration, and flow demand is where the selection starts.

KEY SUBCATEGORIES / PRODUCT TYPES

INFINITI K Series

The Bradford White INFINITI K Series is a condensing indoor and outdoor tankless water heater featuring self calibrating sensors that automatically configure the air fuel ratio for flue length, gas type, and altitude without a combustion analyzer. The INFINITI K Series is available in two output sizes: 7 GPM (SKU RTG-K-160-N1 indoor, SKU RTG-K-160-N2 outdoor) and 8.7 GPM (SKU RTG-K-199-N1 indoor, SKU RTG-K-199-N2 outdoor) in natural gas, with LP conversion kits included on all natural gas models. The INFINITI K Series features SRT Scale Reduction Technology, STEADISET Technology, a built in digital control with Active Bypass, and a segmented burner with a 22:1 turn down ratio. An externally accessible inlet water filter is included. All natural gas INFINITI K Series models require a 120VAC 60Hz electrical power supply. The INFINITI K Series qualifies for a federal tax rebate of up to $600.

INFINITI GR Series and GS Series

The Bradford White INFINITI GR Series and GS Series are condensing tankless water heaters rated at 9.7 GPM, built for residential and commercial applications where high flow demand and built in recirculation are priorities. Both the GR Series (SKU RTG-R-199-N1 natural gas indoor, SKU RTG-R-199-X1 LP indoor) and GS Series (SKU RTG-S-199-N1 natural gas indoor, SKU RTG-S-199-X1 LP indoor) feature a built in recirculation pump and a dedicated recirculation connection that virtually eliminates the cold water sandwich without an internal buffer tank or a separate external pump. The heat exchanger on GR Series and GS Series units is a primary copper with secondary stainless steel 316L configuration designed to minimize scale buildup. Both series comply with Ultra Low NOx at 14 ng/J, accept PVC, CPVC, stainless steel, or polypropylene venting, and support direct vent, unbalanced vent, or outdoor vent cap configurations. Built in freeze protection activates automatically when the unit is plugged in. A pressure relief valve is included at an integral port.

INFINITI L Series

The Bradford White INFINITI L Series is a condensing indoor tankless water heater rated at 8.7 GPM (SKU RTG-L-199-N1, natural gas), sharing the core architecture of the GR Series and GS Series including the primary copper with secondary stainless steel 316L heat exchanger, 22:1 segmented burner turn down ratio, and Ultra Low NOx compliance at 14 ng/J. The INFINITI L Series includes built in freeze protection, a pressure relief valve at an integral port, and external recirculation pump wiring via an optional kit. All natural gas INFINITI L Series models can be converted to LP without the purchase of an additional kit. Venting accepts PVC, CPVC, stainless steel, or polypropylene. The L Series carries ENERGY STAR certification and is certified as a Green Product by the Green Restaurant Association.

INFINITI High Efficiency and Mid Efficiency

The Bradford White INFINITI High Efficiency model RTG-199HE-N is a condensing indoor unit rated at 8.3 GPM (natural gas) carrying ENERGY STAR qualification. The INFINITI Mid Efficiency model RTG-199ME-N is a non condensing indoor unit rated at 7.3 GPM (natural gas), featuring SRT Scale Reduction Technology and exterior installation capability. The RTG-199ME-N complies with the Ultra Low NOx requirement at 10 ng/J. The High Efficiency and Mid Efficiency models represent an earlier generation of the INFINITI lineup and remain available for contractors replacing like for like units or specifying for budget sensitive jobs where the feature sets of the K, GR, GS, or L series are not required.

BUYING GUIDE / HOW TO CHOOSE

Selecting a Bradford White tankless water heater starts with flow rate demand. The INFINITI K Series tops out at 8.7 GPM. The GR Series and GS Series deliver 9.7 GPM. For a whole house job with simultaneous draw points, the difference between 8.7 GPM and 9.7 GPM matters, especially in colder climates where incoming water temperature is lower and the temperature rise demand is higher.

Recirculation is the second filter. The GR Series and GS Series include a built in recirculation pump and dedicated recirculation connection that virtually eliminates cold water sandwich without a buffer tank. The K, L, and earlier HE and ME models support external recirculation pump wiring via an optional kit but do not include the built in pump. For a job where the homeowner expects instant hot water at every fixture, that distinction shapes the spec.

Installation location drives the next decision: indoor versus outdoor. The INFINITI K Series comes in explicit indoor and outdoor variants, with the outdoor models (RTG-K-160-N2, RTG-K-199-N2) built for exposed installation. The GR Series and GS Series support indoor and outdoor installation with the purchase of an outdoor installation kit. The INFINITI Mid Efficiency RTG-199ME-N also carries exterior installation capability.

Venting configuration applies to indoor models. All condensing INFINITI series accept PVC, CPVC, stainless steel, or polypropylene vent material and support direct vent, unbalanced vent, or outdoor vent cap configurations. Confirming vent run length and diameter against Bradford White's engineering documentation for the specific model is required before finalizing the venting design.

Gas type is straightforward across the Bradford White INFINITI line. All natural gas models ship with LP conversion kits included or without an additional kit required, making the same unit specifiable for either fuel type. Confirm local gas type and supply pressure against Bradford White's installation documentation before commissioning.

FAQs

What is the difference between the Bradford White INFINITI K Series and the GR Series or GS Series?

The difference between the Bradford White INFINITI K Series and the GR Series or GS Series is primarily flow rate capacity and built in recirculation. The INFINITI K Series delivers up to 8.7 GPM and uses a self calibrating air fuel ratio system that configures for flue length, gas type, and altitude without a combustion analyzer. The GR Series and GS Series are rated at 9.7 GPM and include a built in recirculation pump with a dedicated recirculation connection that virtually eliminates cold water sandwich without requiring an internal buffer tank. Both lines are ENERGY STAR qualified, use a segmented burner with a 22:1 turn down ratio, and comply with Ultra Low NOx at 14 ng/J.

What venting materials are compatible with Bradford White INFINITI condensing tankless water heaters?

Bradford White INFINITI condensing tankless water heaters, including the GR Series, GS Series, and L Series, accept PVC, CPVC, stainless steel, and polypropylene venting materials. Supported vent configurations include direct vent, unbalanced vent, and outdoor vent cap. Specific vent pipe diameter, maximum run length, and approved termination locations are defined in Bradford White's installation documentation for each model and must be confirmed before the venting design is finalized. Using non approved vent materials on a condensing tankless unit can void the warranty and may cause unsafe flue gas conditions.

Do Bradford White INFINITI natural gas tankless water heaters convert to LP?

Bradford White INFINITI natural gas tankless water heaters can be converted to LP gas. All natural gas INFINITI K Series models ship with an LP conversion kit included. All natural gas GR Series, GS Series, and L Series models can be converted to LP without the purchase of an additional kit. LP specific variants of the GR Series and GS Series, including SKU RTG-R-199-X1 and SKU RTG-S-199-X1, are also available as direct order LP units. Confirming local gas supply pressure against Bradford White's installation requirements before commissioning either fuel type is required.

What does the SRT Scale Reduction Technology on Bradford White INFINITI tankless water heaters do?

SRT Scale Reduction Technology on Bradford White INFINITI tankless water heaters is a design feature that significantly reduces the incidence of scale buildup known to cause poor performance, additional maintenance, and premature component or product failure. SRT is featured on the INFINITI K Series, L Series, and Mid Efficiency RTG-199ME-N models. Scale buildup in a tankless heat exchanger can restrict flow, reduce heat transfer efficiency, and shorten the life of the unit, making SRT particularly relevant on jobs where the incoming water supply has high mineral content.

Which Bradford White INFINITI tankless water heaters qualify for a federal tax rebate?

Bradford White INFINITI K Series tankless condensing water heaters, including the RTG-K-160-N1 and RTG-K-199-N1, qualify for a federal tax rebate of up to $600. All natural gas INFINITI K Series models require a 120VAC 60Hz electrical supply and must be properly grounded. Additional local utility and state rebate programs may apply depending on the installation location, and Bradford White's Rebate Center allows lookup by zip code for currently available programs. Confirm current rebate eligibility with Bradford White's Rebate Center at the time of sale, as program availability can change.