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The Lennox SLP99V is a top-tier residential gas furnace with a 99% AFUE rating, making it one of the most efficient furnaces sold in the US. It uses a variable-capacity burner and a variable-speed ECM blower, so it modulates heat output and airflow instead of cycling on and off at full blast. That design suits homeowners in cold climates who want even temperatures, quiet operation and low gas use, and it competes with modulating furnaces from Carrier, Trane and Bryant. The trade-offs are a high installed cost and the need for a qualified installer, plus condensate management because of its condensing design.
In stock
Lowest price we've seen: $7,556.00 on Nov 14 at Capital. Tracked across 1 store since Nov 14.
Owners of Lennox's variable-capacity furnaces generally report steadier temperatures and quieter operation than their old single-stage units, and praise the efficiency. Complaints center on installation quality and the cost of repairs once the labor warranty ends.
The Lennox SLP99V is a variable-capacity gas furnace with a 99% AFUE rating. It is Energy Star certified.
It has a variable ECM blower and variable staging.
