When buying an Amana gas furnace, shoppers should pay attention to the efficiency rating of that specific model and the presence of a control board that’s capable of self-diagnostics. Additionally, they should ensure that the selected gas furnace fits the existing ventilation system in their homes.
Before deciding which Amana gas furnace model to buy, a shopper should contact multiple HVAC contractors to determine which model suits his home the most and ascertain the cost of the installation procedure. In some cases, it is possible to save money by buying an Amana gas furnace through an online retailer and separately paying a technician to install it. Regardless of the purchasing process, a buyer should always look into models that have longer warranties.
If a shopper is looking for a gas furnace that fires up quickly without using too much energy, he should look into models that feature a variable-speed circular motor. Variable-speed blowers can adapt the speed of air delivery according to the heating needs, whereas gas furnace models with variable heat outputs usually have multiple levels that ensure automated variation.
To ensure efficient heating, models that feature thermostats containing secondary heat exchangers are recommended. As of 2015, most gas furnaces use a direct spark or a hot-surface ignition system instead of a pilot light, which results in an increased annual fuel-utilization efficiency rating.