Best High Efficiency Furnaces

Aerostar 16x25x4 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 15 1/2"x24 1/2"x3 3/4")

AprilAire 210 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 11, Clean Air & Dust, 20x25x4 Air Filter (Pack of 1)

Filtrete 16x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Lennox & Honeywell, Allergen, Bacteria & Virus, , Electrostatic Air Cleaning Filter, 2-Pack (actual size 15.88 x 24.56 x 4.31)

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

Trion Air Bear 20 x 25 x 5 Inch MERV 11 High Performance Air Purifier Filter Replacement for Air Cleaner Purification Systems, White (3 Pack)

EdenPURE Classic CopperPLUS Infrared Space Heater 1500 Watt

Goodman 80,000 BTU 96% Efficiency Upflow, Horizontal Gas Furnace Model GMES960803BN

Goodman GMEC960603BN ULTI-Speed 2-Stage UPFLOW/Horizontal Low NOX Gas Furnace, 17-1/2 in, 96% AFUE, 60,000 BTU, 1,200 CFM (1/EA)

AprilAire 201 Replacement Furnace Filter for AprilAire or Space-Gard 2200 or 2250 Whole-House Air Purifiers - MERV 10, 20x25x6 Air Filter (Pack of 2)

Goodman 80,000 BTU 80% Efficiency Upflow, Horizontal Gas Furnace Model GMES800803BN