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| 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 |
Most homeowners researching the KeepRite G97CTN review never realize how uneven their heating is until they use a modulating-style comfort furnace.
Many older furnaces operate with aggressive ON/OFF heating cycles that create temperature swings, loud airflow, dry winter air, and rooms that never feel consistently comfortable.
The KeepRite Ion™ G97CTN was built for homeowners who want noticeably smoother comfort and quieter heating without paying luxury-tier furnace pricing.
That is what makes this furnace stand out in the KeepRite lineup.
Instead of focusing only on AFUE numbers, the KeepRite G97CTN review conversation is really about overall comfort quality:
For many homeowners, those upgrades become more noticeable than efficiency ratings alone during long Canadian winters.
Limited Inventory Notice:
The KeepRite Ion™ G97CTN has been marked by the manufacturer as having limited inventory availability. However, select distributors and HVAC contractors may still have remaining stock available for installation.
| Feature | Details |
|---|---|
| AFUE Rating | Up to 97% |
| ENERGY STAR® Certified | Yes |
| Burner Type | Dual-stage gas valve |
| Blower Motor | Variable-speed ECM |
| BTU Range | 60,000–120,000 |
| Price Range | $4,500–$5,500 Installed |
| Heat Exchanger | Stainless steel RPJ® |
| Smart Thermostat Support | Ion™ Black System Control |
| Dual Fuel Compatible | Yes |
| Best For | Comfort-focused homeowners |
Most budget furnaces heat homes in large bursts.
The G97CTN works differently.
Its dual-stage gas valve and variable-speed ECM blower adjust heating performance based on actual comfort demand rather than operating at maximum output all the time.
That creates:
This is one reason many homeowners upgrading from older single-stage furnaces immediately notice the comfort difference.
This is one of the most important things homeowners researching the KeepRite G97CTN review want to understand.
A standard furnace typically feels like:
full heat → OFF → full heat → OFF
A two-stage furnace like the G97CTN behaves more gradually.
Most of the time, it runs at lower heating capacity to maintain stable temperatures efficiently. When outdoor temperatures drop significantly, the furnace automatically increases output to maintain comfort.
The result is:
For many homeowners, this creates a “premium comfort” feeling without stepping into ultra-high-end modulating furnace pricing.
With an AFUE rating of up to 97%, the KeepRite G97CTN converts nearly all consumed fuel into usable heat.
That means lower wasted energy and reduced heating costs during winter.
The combination of:
helps the furnace maintain stable indoor comfort while improving operating efficiency.
The variable-speed ECM motor also improves airflow consistency compared to older PSC blower motors commonly found in aging furnaces.
The ECM blower continuously adjusts airflow to improve:
Compared to older fixed-speed motors, airflow feels smoother and less aggressive.
The furnace operates at lower heating output most of the time to reduce cycling and improve efficiency.
When additional heat is required during colder weather, the system automatically increases capacity.
The insulated cabinet and soft-mounted blower system help reduce vibration and operational noise.
This is one reason homeowners comparing:
often also consider the G97CTN.
When paired with the Ion™ Black System Control, homeowners can:
The G97CTN can integrate with compatible heat pump systems for improved efficiency during changing seasonal temperatures.
This setup can help reduce gas usage during milder weather conditions.
The G97CTN targets homeowners who want advanced comfort features without paying the extreme pricing associated with some ultra-premium communicating systems.
The variable-speed airflow and two-stage heating help reduce:
Higher efficiency means less wasted fuel and lower long-term winter heating expenses.
This becomes especially important in colder Canadian climates with long heating seasons.
The system works with:
allowing homeowners to improve overall indoor comfort beyond heating alone.
One reason homeowners upgrade from older 80% furnaces is long-term operating savings.
The efficiency difference between older systems and modern high-efficiency furnaces can become significant over time.
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Most installed systems typically fall between:
Pricing varies depending on:
Homes replacing older mid-efficiency systems may require additional upgrades that increase installation cost.
The Carrier Infinity 98 is positioned as a more premium communicating furnace system.
Carrier offers:
However, many homeowners discover the real-world comfort difference is smaller than the pricing difference suggests.
The KeepRite G97CTN appeals to homeowners wanting:
without paying maximum luxury pricing.
The Lennox SLP99V is one of the most advanced furnaces available in the residential market.
It delivers:
But installation pricing is often substantially higher.
For many homeowners, the G97CTN provides a stronger balance between:
rather than chasing the highest specification numbers available.
Both furnaces target comfort-focused homeowners.
The G97VTN leans more heavily toward:
The G97CTN focuses more on balancing:
This is why many homeowners see the G97CTN as one of the smartest “middle-ground premium” options in the KeepRite lineup.
Depending on your priorities, these KeepRite models may also be worth reviewing:
KeepRite backs the G97CTN with strong warranty protection:
Full registration is typically required within 90 days of installation to receive maximum warranty benefits.
The KeepRite G97CTN is designed for homeowners who want premium comfort improvements without entering ultra-premium furnace pricing territory.
Its biggest strengths are:
This is not the cheapest furnace in the KeepRite lineup.
But for homeowners frustrated with:
the G97CTN often feels like a major comfort upgrade rather than simply another efficiency improvement.
If your goal is premium-level comfort without luxury-tier pricing, the KeepRite G97CTN remains one of the strongest balanced options in the KeepRite furnace lineup.2
Most homeowners describe it as smoother and quieter than standard single-stage heating.
Instead of constantly blasting maximum heat, the furnace operates more gradually to maintain consistent temperatures.
For homeowners prioritizing comfort, quieter airflow, and stable temperatures, many find the upgrade worthwhile over basic single-stage systems.
Yes, although the comfort improvement is often more noticeable in larger homes with greater temperature variation.
Smaller homes can still benefit from:
Yes. The furnace meets ENERGY STAR® efficiency standards.
With professional installation and regular maintenance, high-efficiency furnaces like the G97CTN can often last 15–20 years or longer.
