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| Attribute | Details |
|---|---|
| Make | Lennox |
| Series | Merit Series |
| Model | ML14KP1-048-230 / ML17XP1-048 |
| Capacity | 4 Ton |
| Cooling Capacity | 48,000 BTU |
| Product Type | Split System Heat Pump |
| Compressor Type | Scroll Compressor |
| Compressor Stage | Single Stage |
| Energy Efficiency | Up to 14.3 SEER2 |
| Heating Efficiency | ≥ 7.5 HSPF2 |
| Refrigerant Type | R-454B / R-410A |
| Installation Type | Split System |
| Application | Residential |
| Operation | Heating & Cooling |
| Voltage | 208–230V, 1 Phase |
| Noise Level | Approx. 74–76 dB |
| Coil Type | Quantum™ Coil |
| Build Quality | Weather-Resistant Steel Cabinet |
| Suitable For | Large Spaces |
| Usage Areas | Homes, Open Living Areas |
| Warranty | 5–10 Years Parts (Registration Required) |
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.
Customer Reviews
8 reviews for Lennox 4 Ton Merit Series Heat Pump
Why Homeowners Trust Jimmy HVAC for Reliable Comfort
Reliable HVAC Solutions Built for Comfort, Efficiency, and Long-Term Peace of Mind.
Financing Options Available
Enjoy peace of mind with low monthly payments that make your costs easy to manage without compromising on quality.
Transparent, Upfront Pricing
No hidden charges—just honest, clear pricing so you always know exactly what to expect before work begins.
Free Installation Included
Enjoy hassle-free setup with free professional installation completed on every purchase.
Licensed & Certified Technicians
TSSA-licensed experts ensure safe, highly reliable, and precise system installations and diagnostic repairs.
Parts & Labour Warranty
Long-lasting protection with comprehensive parts coverage alongside our trusted, comprehensive labor guarantees.
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Professional HVAC Installation & Replacement
Jimmy HVAC provides professional installation, replacement, and system upgrades for residential and light commercial HVAC equipment throughout the Greater Toronto Area. Our certified technicians ensure every system is installed according to manufacturer specifications, Ontario building codes, and industry best practices.
Whether you are upgrading to a high-efficiency system, replacing ageing equipment, or installing a new HVAC solution, our team serves homeowners and property managers across the GTA and surrounding communities with reliable service and transparent pricing.
Full-Service HVAC Solutions
- Furnace installation & replacement
- Air conditioner installation
- Heat pump systems
- Tankless water heaters
- Boiler systems
- HVAC system upgrades & retrofits
- Complete Commercial HVAC Solutions
- Preventative maintenance & system inspections
Sophia Adams –
Very smooth installation process. The team was polite and cleaned up after the job. Happy with the purchase so far.
Emily Scott –
I liked how quickly Jimmy HVAC scheduled the installation. The Lennox 4 Ton unit is energy efficient and easy to use.
Lucas Green –
Decent product for the price. Installation was handled professionally. No major issues so far after a few weeks of use.
Ava Richardson –
Great experience with Jimmy HVAC. The Lennox Merit Series Heat Pump runs quietly and keeps the house comfortable throughout the day.
Noah Thompson –
The heat pump does its job, but I expected slightly better cooling during peak heat. Still, Jimmy HVAC service was reliable
Ethan Wallace –
Very satisfied with the Lennox 4 Ton Merit Series Heat Pump. It’s quiet and efficient so far. Pricing from Jimmy HVAC was reasonable compared to others.
Olivia Bennett –
Good overall experience. The unit cools properly, but it took a bit longer than expected to arrive. Installation team from Jimmy HVAC was professional.
Liam Carter –
The Lennox 4 Ton Merit Series Heat Pump works well for our home. Jimmy HVAC handled the installation smoothly and everything was done on time.