Takagi TK-310C
Model Number: TK310
Value-priced Japanese combi boiler for smaller homes.
Technical Specifications
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
Full Specifications
- Model Number
- TK310
- Efficiency (AFUE)
- 94%
- Boiler Type
- Combi Boiler
- BTU Input Range
- 60k - 199k 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
Budget Cape Cods wanting combi solution
Expert Review: Takagi TK-310C
The Takagi TK-310C delivers premium combi boiler performance at 94% AFUE efficiency, providing both space heating and domestic hot water from a single compact unit. This integrated approach eliminates the need for a separate water heater.
Takagi's expertise in tankless water heating translates directly to the TK-310C's domestic hot water performance. For Nassau County homes seeking to eliminate bulky water heaters, the combi configuration frees valuable utility space.
Our installation teams appreciate the TK-310C's wall-mount design and straightforward venting requirements. The compact footprint fits easily in closets and utility rooms where floor space is limited.
For homes in Garden City, Mineola, and surrounding communities with moderate hot water demands, the TK-310C provides excellent space heating alongside dependable domestic hot water delivery.
Takagi's Japanese manufacturing and American support infrastructure ensure quality and serviceability. Local distributors maintain parts inventory for rapid service response.
Space-saving advantage: The TK-310C eliminates separate water heater requirements for homes with modest hot water needs, freeing 10-15 square feet of valuable utility space while providing high-efficiency heating.
Key Features & Technology
Combi heating and DHW
94% AFUE efficiency
Compact design
Japanese manufacturing
Budget-friendly
Advantages
- Lower cost combi option
- Japanese engineering
- Good for smaller homes
- PSEG rebate eligible
Considerations
- 94% AFUE slightly lower
- Fewer local installers
- Parts not same-day
Sizing & Installation Notes
Combi boilers like the TK-310C are sized on two loads at once: the home's heat loss and the peak domestic hot water demand. In most Long Island homes the hot-water load is the larger one, so we size to your household's simultaneous shower and tap use.
Every Takagi installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, and gas or oil supply sizing. 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 |
|---|---|---|---|---|
| TK-310C (this model) | 94% AFUE | 60k - 199k BTU | — | 12 years |
| TK-540X3 | 95% AFUE | 60k - 199k BTU | — | 12 years |
| T-H3S | 95% AFUE | 50k - 160k BTU | — | 12 years |
See the full Takagi brand page for lineup context, or browse the Best Combi Boilers 2027 guide to compare across brands.
Frequently Asked Questions
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