Description
Weil-McLain ECO Tec 150-H 150,000 BTU Heat-Only Condensing Gas Boiler
Weil-McLain is a leading North American Brand of hydronic comfort heating systems for residential, commercial and institutional buildings, since 1881. Contractors, engineers, architects, homeowners, and facility managers alike rely on Weil-McLain boilers for their comfort heating needs. Installed in homes, offices, schools, restaurants, hotels, and other facilities throughout North America, the Weil-McLain brand is among the most trusted and often used in the building industry.
Features
- Spacious cabinet allows full access to all critical parts that are strategically positioned
- Durable, high-grade stainless steel firetube primary heat exchanger maximizes heat transfer, and its vertical design promotes self-rinsing during operation
- Corrosion-resistant polypropylene heat exchanger base protects against acidic condensate
- Sound-dampening air silencer for whisper-quiet operation
- Insulated heat exchanger and DHW pipes further reduce heat loss and noise
- Sealed cabinet preheats incoming air for smooth starting, and does not pull any potential outside debris directly into blower and burner
- Removable, unique control terminal blocks eliminate potential field wiring errors
- Built-in, variable speed ECM circulator saves electrical energy and installation time
- 3-in-1 universal air and vent adapters readily accept different types of pipe materials along with built-in test ports to aid combustion testing
What Our Experts Think
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High‑efficiency heat‑only design: The Weil‑McLain ECO‑Tec 150‑H 150,000 BTU Heat‑Only Condensing Gas Boiler delivers modern condensing efficiency to lower fuel costs while providing reliable hydronic heat.
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Heat‑only focus: Designed specifically for space‑heating applications — ideal when domestic hot water is handled by a separate tank or heater.
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Quiet, dependable operation: Smooth combustion and advanced controls mean stable, even heat with minimal noise.
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Durable build: Engineered with corrosion‑resistant heat exchangers and service‑accessible components for long service life and easier maintenance.
Product Q&A
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What does “heat‑only” mean?
It only provides space heating — domestic hot water must be supplied by a separate water heater or indirect tank. -
What fuel does it use?
Natural gas — propane conversion kits (installed by a licensed technician) are often available separately. -
Where is it best used?
Ideal for single‑family homes, large residences, and light commercial systems requiring a dedicated hydronic heat source. -
Is it energy efficient?
Yes — condensing technology extracts more heat from combustion than traditional boilers, improving overall efficiency and operating cost. -
What heating systems does it support?
Works with baseboard, radiant floor, and fan‑coil hydronic distribution systems.
Maintenance Tips
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Annual professional service: Have a licensed HVAC technician inspect and tune the boiler annually before heating season — check burner performance, heat exchanger condition, and controls.
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Check condensate drain: Ensure condensate lines and traps are clear and correctly pitched to prevent clogs or freezing.
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Monitor pressure & water level: Maintain boiler pressure and check expansion tank function as recommended.
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Clean intake & exhaust paths: Keep vent openings free of debris and obstruction for safe combustion airflow.
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Inspect for leaks: Regularly check valves, fittings, and connections for signs of water or gas leakage.
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Maintain water quality: Use recommended corrosion inhibitors and periodic system flushing to reduce scale and extend component life.
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