Furnaces

Solace gas furnaces are Buy Comfort Direct’s exclusive line — available in 80%, 92%, and 96% AFUE efficiencies with R-32-ready control boards, shipped factory-fresh to your door. Every furnace carries Solace’s 10-year parts warranty plus a lifetime heat-exchanger warranty, and is backed by our price-match guarantee, free shipping over $99, and 0% APR financing with Affirm. Pair one with a Solace coil and condenser for a complete matched system. Not sure what size you need? Our free sizing tool matches your home to the right furnace in about two minutes.

Shop Solace gas furnaces by size (BTU)

Furnaces are sized by BTU heat input — the higher the number, the more heat the furnace produces (actual heat delivered is the BTU input times the AFUE efficiency). As a rough starting point in a moderate climate, figure somewhere around 30–45 BTU of input per square foot, but insulation, ductwork, and how cold your winters get all move that number, so confirm with the sizing tool or a quick call before you buy.

40,000 BTU Solace Furnaces

The smallest size — right for small homes, additions, condos, and mild climates. As a rough guide, suits homes up to around 1,000 sq ft, depending on climate and insulation. See all 40,000 BTU Solace furnaces → Popular in stock: S-GR9S800403ANA (80% AFUE), S-GRVT960403BN (96% AFUE).

60,000 BTU Solace Furnaces

A common fit for smaller and well-insulated homes. As a rough guide, suits homes around 1,000–1,500 sq ft, depending on climate and insulation. See all 60,000 BTU Solace furnaces → Popular in stock: S-GRVT800603BN (80% AFUE), S-GRVT960603BN (96% AFUE).

80,000 BTU Solace Furnaces

The most common residential furnace size. As a rough guide, suits homes around 1,500–2,000 sq ft, depending on climate and insulation. See all 80,000 BTU Solace furnaces → Popular in stock: S-GRVT800805DN (80% AFUE), S-GRVT960804CN (96% AFUE).

100,000 BTU Solace Furnaces

For larger homes and colder climates. As a rough guide, suits homes around 2,000–2,500 sq ft, depending on climate and insulation. See all 100,000 BTU Solace furnaces → Popular in stock: S-GR9S801005CNA (80% AFUE), S-GRVT961005CN (96% AFUE).
Need more capacity? We also stock 120,000 BTU Solace furnaces for the largest or coldest-climate homes. Between two sizes, or matching a furnace to an existing coil and air handler? Run the free sizing tool or call (877) 843-4822 — a real person picks up. We also price-match any legitimate competitor. New to the brand? Read our honest Solace review.

Quick sizing guide

Sized by heating BTU — roughly 30–60 BTU per square foot depending on climate; the sizing tool does the math. Jump to your size: 40,000 BTU · 60,000 BTU · 80,000 BTU (most 1,800–2,400 sq ft homes) · 100,000 BTU · 120,000 BTU. All 80–96% AFUE with a lifetime heat-exchanger warranty.