The SoftSound VC 97 Variable-Speed Modulating Gas Furnace is made with stainless steel heat exchangers and achieves a 97 percent AFUE rating, says the maker. It’s designed to operate for longer periods and at lower heat levels than a single-stage furnace but to kick into high gear when temperatures drop. The furnace cabinet is insulated and sealed to reduce noise. The manufacturer declined to provide pricing.

International Comfort Products, 931/270-4100, comfortmaker.com.

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