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Lennox 4 Ton Merit Series Heat Pump

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Our team will contact you after order placement to schedule installation and confirm your order details.

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Affordable Monthly Financing

Flexible monthly payment plans are available. Once your order is placed, our team will reach out to set everything up — quick, simple, and budget-friendly.

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Licensed & Certified Technicians

Skilled TSSA-licensed technicians providing dependable, compliant, and professional service for all repairs and installations.

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Professional Installation Included

Enjoy hassle-free setup with professional installation on every purchase.

Parts & Labour Warranty

Comprehensive protection covering both parts and labour to ensure long-term reliability and peace of mind.

Specification

AttributeDetails
MakeLennox
SeriesMerit Series
ModelML14KP1-048-230 / ML17XP1-048
Capacity4 Ton
Cooling Capacity48,000 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. 74–76 dB
Coil TypeQuantum™ Coil
Build QualityWeather-Resistant Steel Cabinet
Suitable ForLarge Spaces
Usage AreasHomes, Open Living Areas
Warranty5–10 Years Parts (Registration Required)

Description

The Lennox Merit Series 4 Ton Heat Pump System is a reliable and energy-efficient solution designed for residential heating and cooling. With a 4 ton (48,000 BTU) capacity, this system is ideal for larger homes, delivering consistent comfort and dependable performance 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 strong cooling during hot weather and reliable heating during cooler months, making it a practical all-in-one HVAC solution.

This system is equipped with Lennox’s Quantum™ coil technology, which enhances durability and corrosion resistance, even in demanding outdoor conditions. It uses next-generation R-454B refrigerant, offering lower environmental impact 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 dependable choice for long-term residential use.


Key Features

High Capacity Cooling & Heating – 4 Ton
Ideal for large residential spaces and open floor plans.

Single-Stage Operation
Simple and reliable performance with consistent 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)
Environmentally improved and future-ready refrigerant.

Durable Steel Cabinet
Weather-resistant construction for long-term outdoor use.

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


Why Buy Lennox Merit Series 4 Ton Heat Pump

The Lennox Merit Series 4 Ton heat pump is an excellent choice for homeowners needing a reliable and cost-effective HVAC system for larger homes. With durable construction, proven components, and efficient performance, it offers strong long-term value for residential heating and cooling.