Consumer ratings of natural gas furnaces compiled by Furnace Compare picked the Clare brand as the best. Out of 25 reviews listed on the website, 14 reported being very satisfied with the brand.
Also known as Clare Brothers, this line of furnace models is produced by International Comfort Products. The company began specializing in heating products in the mid-19th century. The Clare HEG Megasave gas furnace series, consisting of four short models, has an input of 60,000 to 120,000 British thermal units per hour and a heat output of 57,600 to 114,000 BTU per hour, venting out of a roof or chimney.
In contrast, Top Furnace Guide chose the Coleman brand of natural gas furnace as the top brand rated by consumers. The company began manufacturing heating, ventilation and air-conditioning equipment in 1939, only later diversifying into the popular camping gear division. The basic Coleman natural gas furnace is the Echelon, which features a quiet and efficient variable speed modulating blower motor.
Top Ten Reviews offers a pick of the ten best models from different manufacturers in a 2015 synopsis, selecting appliances from Amana, Bryant, Coleman, Goodman, Nordyne, Rheem, Rudd, Trane, Winchester and York. Each model was given a thorough review, noting important factors like initial cost, energy efficiency as measured by the annual fuel utilization efficiency rating and the length of warranty.