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The Goodman GR9S800603AN is a single-stage gas furnace rated at 60,000 BTU input and 80% AFUE. Its 14-inch-wide cabinet fits upflow or horizontal installations, which helps in closets and tight retrofits where a wider furnace will not go. It is a builder-grade unit: it heats reliably but gives up the fuel savings and variable-speed comfort of 90%+ modulating furnaces. Owners and technicians describe it as simple to install and service, with the usual single-stage trade-offs of a fixed blower speed and more on/off cycling.
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Lowest price we've seen: $1,209.95 on Nov 15 at Amazon. Tracked across 1 store since Nov 15.
Technicians and owners treat the GR9 series as a dependable budget furnace that is easy to install and service. Complaints center on efficiency and the on/off cycling of a single-stage burner rather than breakdowns.
The Goodman GR9S800603AN is a single-stage gas furnace for home heating. It has a 60,000 BTU capacity and an 80% AFUE rating. The cabinet is 14 inches wide and can be installed in an upflow or horizontal position.
It has a long-lasting igniter and a self-diagnostic control board with constant memory for error detection, which helps with troubleshooting. The furnace is designed to circulate air with minimal noise and to reduce energy consumption.
It is compatible with electronic air cleaners and humidifiers.
