Furnace System GuideHeil publishes a product page for its G97CMN Ion 98 gas furnace. This entry records what that page states about the furnace's efficiency, modulation, blower motor, and registered warranty coverage.
G97CMN efficiency, modulation, and blower
Heil's product page titles the G97CMN the Ion 98 Variable-Speed Modulating Gas Furnace and states it is rated up to 98 percent AFUE. Heil describes a modulating gas valve that adjusts output across a range of 40 to 100 percent capacity to match heating demand.
Heil's page lists a high-efficiency variable-speed, constant-airflow ECM blower motor. Heil states the combination of the modulating valve and the variable-speed blower delivers even temperature control while running at lower stages most of the time.
Warranty terms as documented
Heil's G97CMN page states a Lifetime Heat Exchanger Limited Warranty on timely registration, which reduces to 20 years if the unit is not registered within 90 days of installation. The page states a 10-Year Parts Limited Warranty on timely registration, reduced to 5 years without registration.
Heil also lists a 10-year No Hassle Replacement Limited Warranty, a one-time unit replacement benefit if a covered component fails due to defect. On this gas furnace the covered component that applies is the heat exchanger; Heil's boilerplate warranty language also names the compressor and coil, which are cooling-system components. The warranty terms are recorded as written on the product page.