Share
    Back to Takagi Boilers
    Takagi logo
    Value

    Takagi T-H3S

    Model Number: TH3S

    Entry-level Japanese condensing boiler for budget installations.

    95% AFUE
    Condensing Boiler
    50k - 160k BTU
    Program eligibility requires written confirmation
    (516) 259-1191

    Technical Specifications

    Efficiency (AFUE)95%
    Boiler TypeCondensing Boiler
    BTU Input Range50k - 160k BTU
    FuelSee spec sheet
    VentingSee spec sheet
    Makes Domestic Hot WaterSee spec sheet
    In ProductionYes
    Heat Exchanger Warranty12 years
    Installed Price

    Prices depend on sizing, venting and piping in your home, so we quote every installation.

    Sizing: the right size comes from a room-by-room heat-loss calculation, not the size of the old boiler or a rule of thumb. Oversized boilers short-cycle and waste fuel; steam systems are sized to the connected radiation instead. See how we approach boiler installation.

    Home-Specific Operating Cost Review

    No guaranteed annual savings or payback period

    Historical Use

    Fuel consumption and weather

    Current Rates

    Utility and delivered-fuel prices

    System Design

    Load, piping, controls, and temperatures

    Get Your Custom Quote

    Full Specifications

    Model Number
    TH3S
    Efficiency (AFUE)
    95%
    Boiler Type
    Condensing Boiler
    BTU Input Range
    50k - 160k BTU
    In Production
    Yes
    Parts Warranty
    5 years
    Heat Exchanger Warranty
    12 years

    Specification source not yet linked — figures are being verified against manufacturer data.

    Ideal For

    Smallest homes on tightest budgets

    Expert Review: Takagi T-H3S

    The Takagi T-H3S delivers 95% AFUE condensing efficiency in a value-tier package, bringing Takagi quality to budget-conscious Nassau County homeowners seeking high-efficiency performance without premium pricing.

    While positioned as Takagi's entry condensing boiler, the T-H3S maintains the quality standards that define the brand. Our installation teams have observed excellent reliability in Long Island applications, where the boiler handles seasonal demands effectively.

    For homes in Hicksville, Westbury, and the surrounding communities upgrading from conventional boilers, the T-H3S provides significant energy savings at accessible pricing. Typical installations show 25-30% reductions in heating costs.

    The T-H3S features Takagi's proven stainless steel heat exchanger technology, resisting the corrosion that can shorten service life in hard water environments common across Nassau County.

    Takagi's American distribution network ensures parts availability and technical support, providing long-term serviceability confidence.

    Value proposition: The T-H3S delivers premium brand quality with condensing efficiency at mid-tier pricing, making high-efficiency heating accessible for budget-conscious homeowners without sacrificing reliability.

    Key Features & Technology

    Entry-level condensing

    Compact wall-mount

    Japanese quality

    Energy Star rated

    Affordable pricing

    Advantages

    • Most affordable Japanese option
    • Wall-mount saves space
    • PSEG rebate eligible
    • Reliable performer

    Considerations

    • Smaller capacity
    • Basic features
    • Parts availability slower

    Sizing & Installation Notes

    Condensing boilers like the T-H3S reach their rated efficiency only when return water runs cool enough to condense flue gases. We check your radiation and design water temperatures so the unit actually condenses in your home, not just on the spec sheet.

    Every Takagi installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, gas or oil supply sizing, and permit requirements for your town. Learn more about our boiler installation process, or see current rebate and incentive programs that may apply.

    Warranty & Protection

    Parts Warranty

    5 years

    Heat Exchanger

    12 years

    Our Guarantee

    100% Satisfaction

    All Takagi boiler installations by Home+ Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.

    Compare the Takagi Lineup

    Model Efficiency BTU Range Fuel Heat Exchanger Warranty
    T-H3S (this model) 95% AFUE 50k - 160k BTU — 12 years
    TK-540X3 95% AFUE 60k - 199k BTU — 12 years
    TK-310C 94% AFUE 60k - 199k BTU — 12 years

    See the full Takagi brand page for lineup context, or browse the Best Condensing Boilers guide to compare across brands.

    Frequently Asked Questions

    Ready for a Quote?

    Get a free, no-obligation quote for Takagi T-H3S installation in Nassau County.

    (516) 259-1191

    More Takagi Boilers

    Explore other boiler models from Takagi.

    View All Takagi Boilers

    Compare Boiler Brands

    See how Takagi compares to other top boiler manufacturers.

    Compare Alternatives

    Similar Boiler Models to Compare

    Other condensing boilers with similar efficiency ratings from different brands.

    Condensing
    AFUE
    Not verified
    Tier
    mid-range
    View Details
    Condensing
    High Eff.
    AFUE
    96.2%
    Tier
    mid-range
    View Details
    Condensing
    High Eff.
    AFUE
    96.1%
    Tier
    mid-range
    View Details
    Condensing
    High Eff.
    AFUE
    96%
    Tier
    flagship

    $5,000 - $8,500

    View Details