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High Efficiency Gas Boilers
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$7,740.57 each
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$139.24 each
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$4,968.71 each
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$6,129.50 each
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$8,201.15 each
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$8,943.95 each
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$4,404.90 each
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$16,035.54 each
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$23,182.19 each
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$12,964.41 each
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$3,167.20 each
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$17,858.99 each
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$4,981.92 each
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$5,488.59 each
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$16,932.22 each
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$18,074.54 each
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$9,316.37 each
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$5,078.60 each
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$4,304.03 each
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$3,650.40 each
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$2,731.70 each
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$10,274.06 each
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$7,066.89 each
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$3,697.28 each
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$3,826.70 each
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$19,912.99 each
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$4,291.62 each
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$5,488.59 each
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$5,675.51 each
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$4,858.20 each
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$5,948.51 each
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$12,297.79 each
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$3,602.00 each
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NTH-105 96,000 BTU Neotherm Residential High Efficiency, Wall Mount Heat Only Condensing Boiler (NG)
$8,692.80 each
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$55,972.68 each
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$3,625.30 each
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$5,675.51 each
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$3,490.69 each
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$61,114.18 each
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$20,013.16 each
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$6,135.86 each
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$16,631.37 each
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$21,068.46 each
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$45,834.89 each
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$5,408.16 each
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$6,130.17 each
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More About High Efficiency Gas Boilers
Maximize Heat, Minimize Waste.
High-efficiency gas boilers deliver reliable heat while keeping fuel costs in check. Condensing boilers squeeze every BTU from natural gas and propane, pushing AFUE ratings above 90% and cutting fuel costs and emissions without sacrificing performance.
Why Choose a High-Efficiency Gas Boiler
Unlike older boilers, condensing models feature a secondary heat exchanger that captures extra heat from flue gases. That boosts efficiency, reduces return-water temperatures, and cuts energy waste. Over time, savings on utility bills often exceed the investment in a high-efficiency boiler installation.
Natural Gas Boilers vs Propane Gas Boilers
Natural gas boilers offer lower per-BTU fuel costs where utility lines exist. Propane gas boilers bring flexibility for off-grid homes or areas without mains gas. Both fuel types support condensing technology, modulating burners, and outdoor reset controls to keep systems responsive and efficient.
Choosing the Right High-Efficiency Boiler
Installation & Maintenance Tips
High-efficiency gas boilers deliver reliable heat while keeping fuel costs in check. Condensing boilers squeeze every BTU from natural gas and propane, pushing AFUE ratings above 90% and cutting fuel costs and emissions without sacrificing performance.
Why Choose a High-Efficiency Gas Boiler
Unlike older boilers, condensing models feature a secondary heat exchanger that captures extra heat from flue gases. That boosts efficiency, reduces return-water temperatures, and cuts energy waste. Over time, savings on utility bills often exceed the investment in a high-efficiency boiler installation.
Natural Gas Boilers vs Propane Gas Boilers
Natural gas boilers offer lower per-BTU fuel costs where utility lines exist. Propane gas boilers bring flexibility for off-grid homes or areas without mains gas. Both fuel types support condensing technology, modulating burners, and outdoor reset controls to keep systems responsive and efficient.
Choosing the Right High-Efficiency Boiler
- Calculate heat load. Match BTU output to the home’s square footage and insulation levels.
- Aim for 95% AFUE or higher when possible.
- Check venting. Condensing boilers need PVC or stainless vent kits for low flue temperatures.
- Look for modulating burners and outdoor reset controls for peak efficiency.
Installation & Maintenance Tips
- Pump a condensate neutralizer to protect drains from acidic condensate.
- Schedule annual tune-ups: clean heat exchangers and check burner performance.
- Inspect vent pipe seals and PVC connections for leaks.
- Verify proper combustion air intake in tight, high-efficiency homes.
FAQs about High-Efficiency Gas Boilers
What is a condensing boiler?
A condensing boiler uses a secondary heat exchanger to extract extra heat from flue gases, boosting efficiency and lowering return-water temperatures.
How do I choose between natural gas and propane boilers?
Choose natural gas boilers for lower fuel costs where lines exist. Select propane gas boilers for flexibility in off-grid settings.
What does AFUE mean?
AFUE (Annual Fuel Utilization Efficiency) measures how efficiently a boiler converts fuel into heat over a year. Look for ratings above 90%.
Are there rebates for high-efficiency boiler installation?
Many utility companies and government programs offer rebates or tax credits for boilers with AFUE ratings of 90% or higher. Check local incentives.
How often should I service a high-efficiency boiler?
Annual maintenance is recommended: clean heat exchangers, inspect burners, and verify proper venting to maintain peak performance.
