Lowest prices | Free install included.
Description
The Keeprite R4A4S 2.5 Ton Single-Stage Air Conditioner is a reliable and budget-friendly cooling solution designed for residential use. With a 2.5 ton capacity, this unit is ideal for medium to large homes, delivering consistent and efficient cooling performance even during peak summer conditions.
Built with durable components, this air conditioner features a high-efficiency single-stage scroll compressor that ensures stable operation and long-term reliability. It is designed to maintain consistent indoor temperatures while providing steady airflow for improved comfort across living spaces.
The R4A4S series uses R-410A refrigerant, a non-ozone depleting solution that enhances cooling efficiency while being environmentally safer than older refrigerants. The system also includes a single-speed fan motor and optimized coil design for effective heat transfer and dependable performance.
Designed for durability, the unit comes with a corrosion-resistant galvanized steel cabinet and protective grille, helping it withstand harsh outdoor conditions. Additionally, it delivers quiet and consistent performance, making it suitable for residential environments.
Whether for living areas, larger bedrooms, or full-home cooling, the Keeprite R4A4S 2.5 Ton AC offers dependable performance, energy efficiency, and long-lasting durability.
Key Features
Efficient Cooling – 2.5 Ton Capacity
Ideal for medium to large-sized spaces (approx. 2200–2700 sq. ft.).
up to 14 SEER2 Efficiency
Provides a balance of energy savings and reliable cooling performance.
Single-Stage Scroll Compressor
Ensures stable, durable, and efficient cooling operation.
R-410A Refrigerant Technology
Non-ozone depleting refrigerant for improved efficiency and environmental safety.
Single-Speed Fan Motor
Provides consistent airflow and dependable system performance.
Durable Steel Cabinet
Weather-resistant construction with corrosion protection for long-term use.
Quiet Operation
Designed for quiet residential performance.
Why Buy Keeprite R4A4S 2.5 Ton Air Conditioner
The Keeprite R4A4S 2.5 Ton AC is an excellent choice for homeowners looking for an affordable and reliable cooling system with slightly higher capacity. It offers strong performance, durable construction, and consistent efficiency, making it ideal for medium to large residential spaces.
Specification
Specifications
| Category | Details |
|---|---|
| Make | Navien |
| Model | NCB-190/060H |
| Type | High-Efficiency Condensing Combi Boiler |
| Energy Factor (AFUE) | 95% |
| Fuel Type | Natural Gas |
| Domestic Hot Water Input | 190,000 BTU/h |
| Heating Input Capacity | 60,000 BTU/h |
| Max Flow Rate | 11.1 GPM |
| Dimensions | 29.3 H × 17.3 W × 12.8 D (inches) |
| Heat Exchanger Material | Stainless Steel |
| Mounting Type | Wall-Mounted |
| Emissions | Ultra-Low NOx |
| Technical Information | Advanced condensing system, modulating burner, smart digital control panel |
| Warranty | 10 Years on Heat Exchanger + 5 Years on Parts + 1 Year Labor Coverage |
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.

Transparent, Upfront Pricing
No hidden charges—just honest, clear pricing so you always know what to expect.
Licensed & Certified Technicians
TSSA-licensed experts ensure safe, reliable, and high-quality installations and repairs.
Free Installation Included
Enjoy hassle-free setup with free professional installation on every purchase.
Parts & Labour Warranty
Long-lasting protection with comprehensive parts coverage and an included labour warranty.
Reviews
14 reviews for Navien NCB-190/060H Combi-boiler- For Homes Upto 1500 Sq.Ft
Lowest prices | Free install included.
Service Area – 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 with reliable service and transparent pricing.
Cities We Serve
Toronto
Mississauga
Brampton
Vaughan
Markham
Richmond Hill
Oakville
Milton
Pickering
Ajax
Whitby
Oshawa
London
Barrie
Hamilton
Kitchener
Full-Service HVAC Solutions Across the GTA
Our services include:
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
Each installation is completed by licensed technicians to ensure optimal performance, long-term reliability, and energy efficiency.
In addition to professional installation, we provide detailed system assessment and proper equipment sizing to match your property’s heating and cooling requirements. Correct system sizing is critical for maximizing energy efficiency, maintaining consistent indoor comfort, and preventing premature equipment wear. Our team evaluates factors such as square footage, insulation levels, airflow design, and overall system compatibility before recommending any HVAC solution.
We focus on delivering installations that meet manufacturer specifications and industry standards, ensuring warranty compliance and long-term operational stability. From new construction projects to replacement of aging HVAC systems, every installation is carried out with attention to airflow balance, duct integration, ventilation requirements, and energy performance optimization.
Homeowners and property managers rely on Jimmy HVAC for dependable service, clear communication, and technically sound installations that reduce operating costs while improving year-round comfort. Whether upgrading to a high-efficiency furnace, installing a modern heat pump system, or replacing an outdated boiler, our goal is to provide durable HVAC solutions designed for consistent performance and long-term value.










Rebecca Sullivan –
Jimmy HVAC did a great job installing the Navien NCB-190/060H. Heat and hot water are steady, even during cold mornings.
Omar Hassan –
Good system for a home under 1500 sq. ft. The technicians explained maintenance clearly. Service was efficient overall.
Nicole Tremblay –
Simple, clean installation and no issues so far. Took about a week to get an appointment, but the work itself was well done.
Andrew Morrison –
Good experience overall. Installers arrived on time and explained the maintenance basics. Pricing was reasonable for a combi boiler of this quality.
Sonia Patel –
Excellent service from start to finish. The Navien combi boiler heats quickly and reduced our gas usage compared to the old system.
revor Collins –
The boiler works fine, but I wish the initial walkthrough was a bit more detailed. Jimmy HVAC did respond quickly when I had questions later.
Melissa Nguyen –
Installation was done in one day. The unit is compact and freed up space in our utility room. Still getting used to the controls, but performance has been solid.
Robert Sinclair –
Fast service and honest advice. The Navien NCB-190/060H was recommended for our home size, and it’s been running smoothly since day one.
Ahmed Hassan –
We chose Jimmy HVAC for the Navien combi boiler because of their pricing. Everything works as promised, and hot water doesn’t run out even with back-to-back showers.
Emily Carter –
Great experience overall. The installation crew was respectful and cleaned up after themselves. The boiler heats our 1500 sq ft townhouse efficiently.
Jason Wong –
The system runs well now, but we had a small scheduling delay. Once installed, the combi boiler has been reliable. Jimmy HVAC followed up after installation, which I appreciated.
Mark Lavoie –
Very happy with the Navien NCB-190/060H. Pricing was fair compared to other quotes we received in Mississauga. Service was professional and straightforward.
Priya Shah –
The boiler itself works well and heats our home evenly. Installation took a bit longer than expected, but the Jimmy HVAC team explained everything clearly.
Daniel McAllister –
Installed the Navien NCB-190/060H combi boiler in our 1400 sq ft home. Quiet, efficient, and hot water is instant. Jimmy HVAC handled the install cleanly and on time.