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Lennox 3.5 Ton Merit Series Heat Pump

Specification

AttributeDetails
MakeLennox
SeriesMerit Series
ModelML14KP1-042-230 / ML17XP1-042
Capacity3.5 Ton
Cooling Capacity42,000 BTU
Product TypeSplit System Heat Pump
Compressor TypeScroll Compressor
Compressor StageSingle Stage
Energy EfficiencyUp to 14.3 SEER2
Heating Efficiency≥ 7.5 HSPF2
Refrigerant TypeR-454B / R-410A
Installation TypeSplit System
ApplicationResidential
OperationHeating & Cooling
Voltage208–230V, 1 Phase
Noise LevelApprox. 74 dB
Coil TypeQuantum™ Coil
Build QualityWeather-Resistant Steel Cabinet
Suitable ForMedium to Large Spaces
Usage AreasHomes, Living Areas
Warranty5–10 Years Parts (Registration Required)

Description

The Lennox Merit Series 3.5 Ton Heat Pump System is a dependable and energy-efficient solution designed for residential heating and cooling. With a 3.5 ton (42,000 BTU) capacity, this system is ideal for medium to large homes, delivering consistent and reliable comfort throughout the year.

Built with Lennox’s proven engineering, the Merit Series features a durable single-stage scroll compressor that ensures stable and efficient operation. It provides effective cooling during hot weather and dependable heating during cooler seasons, making it a practical all-in-one HVAC solution.

This system is equipped with Lennox’s Quantum™ coil technology, designed to enhance durability and resist corrosion, even in demanding outdoor environments. It uses next-generation R-454B refrigerant, offering improved environmental performance and compliance with modern HVAC standards.

With efficiency ratings of up to 14.3 SEER2 and ENERGY STAR® eligibility, the unit helps reduce energy consumption while maintaining strong performance. The rugged, weather-resistant steel cabinet and quiet operation make it a reliable choice for long-term residential use.


Key Features

Efficient Cooling & Heating – 3.5 Ton Capacity
Ideal for medium to large homes with consistent performance.

Single-Stage Operation
Reliable and straightforward operation with steady output.

Scroll Compressor
Durable and efficient compressor for long-term reliability.

Up to 14.3 SEER2 Efficiency
Energy-efficient performance with potential ENERGY STAR® qualification.

Quantum™ Coil Technology
Enhanced corrosion resistance and durability.

R-454B Refrigerant (Next-Gen)
Lower environmental impact and future-ready compliance.

Durable Steel Cabinet
Weather-resistant construction for outdoor longevity.

Quiet Operation
Designed for low noise levels to improve indoor comfort.


Why Buy Lennox Merit Series 3.5 Ton Heat Pump

The Lennox Merit Series 3.5 Ton heat pump is an excellent choice for homeowners seeking a reliable, cost-effective, and efficient HVAC system for larger spaces. With durable components and consistent performance, it offers strong long-term value.

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