In our research on behalf of your heating and cooling experts in St Louis near South County, we have been looking at heating and cooling solutions from multiple angles. Covering the two types of furnaces, atmospheric and condensing is what we just finished doing. Now, we consider that the best gas furnaces and boilers today have efficiency over 90%.
When it comes to efficiency, there is a difference between them. “The efficiency of a fossil-fuel furnace or boiler is a measure of the amount of useful heat produced per unit of input energy (fuel). Combustion efficiency is the simplest measure; it is just the system’s efficiency while it is running. Combustion efficiency is like the miles per gallon your car gets cruising along at 55 miles per hour on the highway.” When it comes to regulations, the minimum AFUE, or annual fuel utilization efficiency, estimates seasonal efficiency, averaging peak and part-load situations. “AFUE accounts for start-up, cool-down, and other operating losses that occur in real operating conditions, and includes an estimate of electricity used by the air handler, inducer fan, and controls. AFUE is like your car mileage between fill-ups, including both highway driving and stop-and-go traffic. The higher the AFUE, the more efficient the furnace or boiler.”
Boilers are an interesting subject and product. They are special purpose water heaters. According to our St Louis Cooling repair near South County, it is true that while furnaces carry heat in warm air, boiler systems distribute the heat in hot water, which gives up heat as it passes through radiators or other devices in rooms throughout the house. Then, when the cooler water is set, it runs, returning to the boiler to be reheated. Hydronic systems are systems that run on hot water. Residential boilers are usually natural gas or heating oil for fuel.