| Square Footage | Furnace BTU |
|---|---|
| 1,000-1,200 sq. ft. Home | 40,000 - 60,000 BTU |
| 1,200-1,500 sq. ft. Home | 60,000 BTU |
| 1,500-1,800 sq. ft. Home | 60,000 - 80,000 BTU |
| 1,800-2,500 sq. ft. Home | 80,000 - 100,000 BTU |
| 2,500-3,500 sq. ft. Home | 100,000 to 120,000 BTU |
The Lennox SLP98V Furnace Review is a premium gas furnace from the Dave Lennox Signature Collection, built for homeowners who prioritize maximum efficiency, precise temperature control, and whisper-quiet performance.
⚠️ Discontinued Notice:
This model has been discontinued by the manufacturer. However, limited inventory may still be available through select Canadian distributors and HVAC contractors while supplies last.
Even today, the Lennox SLP98V Furnace Review remains relevant because it set the benchmark for high-efficiency, modulating furnaces and continues to outperform many newer systems in comfort and noise control.
Efficiency (AFUE): 98.7%
ENERGY STAR®: Most Efficient (2017)
Heating Type: Variable-capacity (modulating in 1% increments)
Blower Motor: Variable-speed ECM
Noise Level: Up to 10× quieter than standard furnaces
Status: Discontinued (limited availability)
Exceptional Energy Efficiency: Nearly all fuel is converted into usable heat
Precision Comfort: Modulates heat output in 1% increments to avoid temperature swings
Ultra-Quiet Operation: One of the quietest furnaces Lennox has ever built
Smart Control Ready: Works seamlessly with iComfort® S30 Ultra thermostat
Built to Last: Heavy-gauge aluminized steel heat exchanger
The Lennox SLP98V Furnace Review was designed for homeowners who wanted the absolute best in efficiency, comfort, and quiet operation. Although discontinued, it remains one of the most advanced furnaces Lennox has ever produced.
If you can still find one in Canada through a licensed contractor, it offers exceptional long-term value—especially for larger homes or regions with long, cold winters.
AFUE: 98.7%
Heating Stages: Fully modulating (35%–100%)
Blower Type: Variable-speed ECM
ENERGY STAR® Most Efficient: Yes (2017)
The SLP98V is built around Precise Comfort™ technology, which continuously adjusts heat output based on real-time indoor conditions. Unlike single- or two-stage furnaces, this system eliminates hot and cold spots by delivering only the exact heat needed.
Its Duralok Plus™ heat exchanger assembly, made from aluminized steel, includes both a primary heat exchanger and secondary condenser coil—maximizing heat transfer and durability.
With a 98.7% AFUE, the SLP98V wastes almost no fuel. For homeowners upgrading from an older furnace, this level of efficiency can significantly reduce monthly gas bills over time—especially in colder Canadian climates.
The variable-capacity operation ensures longer run times at lower output, which improves comfort, efficiency, and system longevity.
The SLP98V is engineered with SilentComfort™ technology, combining:
Advanced sound-absorbing insulation
Patented burner sound enclosure
Precision internal airflow design
The result is a furnace that operates up to 10 times quieter than conventional models—ideal for homes where the furnace is located near living spaces.
When paired with the iComfort® S30 Ultra Smart Thermostat, the SLP98V unlocks advanced personalization:
Furnace modulation from 35% to 100%
Learning algorithms that adapt to household habits
Enhanced humidity and comfort control
Intelligent system coordination to prevent overheating
Heat Exchanger: Lifetime limited warranty
Parts:
5-year limited warranty (standard)
Optional 10-year limited parts warranty with registration within 60 days
Warranty terms may vary by province. Always confirm details with a licensed Canadian HVAC contractor.
Pros
Industry-leading 98.7% AFUE efficiency
Fully modulating heating for unmatched comfort
Extremely quiet operation
Smart thermostat integration
Durable, premium construction
Cons
Discontinued model (limited availability)
Higher upfront installation cost
Replacement parts may be harder to source long-term
AirFlex™ Technology
Allows HVAC technicians to fine-tune airflow based on your home’s layout, climate, and comfort preferences for optimal efficiency and balanced heating.
iComfort® S30 Ultra Smart Thermostat Compatibility
Learns your household’s temperature habits and modulates furnace output from 35%–100%, preventing overheating and improving comfort consistency.
Precision Comfort Control
The combination of smart controls and modulating performance makes the SLP98V one of Lennox’s most precise and responsive furnaces.
Seven-Segment LED Diagnostic Display
Displays clear error codes for faster, more accurate servicing by HVAC technicians.
Diagnostic Memory Storage
Stores up to 10 fault codes, even during power outages, helping reduce service time and repair costs.
Faster Service, Lower Maintenance Costs
Built-in diagnostics simplify troubleshooting and help keep the system running efficiently year after year.
Homeowners seeking maximum comfort and quiet operation
Large homes in cold Canadian climates
Buyers prioritizing long-term efficiency over upfront cost
Smart-home users wanting advanced system control
Buyers needing easy long-term part availability
Homeowners on a strict budget
Those preferring currently manufactured models
The Lennox SLP98V Furnace Review set the benchmark for home heating comfort, quiet operation, and energy efficiency. Although now discontinued, it remains one of the most advanced furnaces ever built, offering exceptional temperature control, ultra-quiet performance, and smart-home compatibility.
If you can still find one through a local distributor, it’s an excellent long-term investment in home comfort and efficiency.
The installation or replacement cost of any furnace, air conditioner, or heat pump in Canada can vary based on several important factors:
Size of the home and required furnace sizing
Your province and climate conditions (Ontario, hamilton, burlington, etc.)
Overall installation difficulty and labour hours
The need for ductwork upgrades
Pricing and experience of local HVAC contractors
We proudly help homeowners across Canada compare furnace prices, get installation quotes, and find trusted HVAC contractors. Here are some of the top cities where we provide service:
Hamilton • Burlington • Brantford • Cambridge • Kitchener • Milton • Oakville
Whether you’re upgrading your furnace, replacing an old system, or comparing HVAC quotes, our certified contractors are available to assist you in all major regions across Ontario and beyond.
Get free quotes from trusted HVAC professionals in your city and compare furnace installation costs instantly.
We partner with installers affiliated with recognized industry organizations, including:
These affiliations ensure reliable service, certified expertise, and consistent installation quality across Canada.
Q.Is the Lennox SLP98V still available in Canada?
It’s discontinued, but limited stock may still be available through select contractors.
Q.Is this furnace quieter than newer models?
Yes. It remains one of the quietest furnaces Lennox has ever produced.
Q.Does it qualify for rebates?
It previously qualified for top-tier rebates. Availability depends on current provincial programs and remaining inventory.
If you’re considering a high-efficiency upgrade, it’s worth checking availability.
Compare installation costs, get free quotes from licensed HVAC contractors, and see if the Lennox SLP98V is still an option for your home.
