Have you gotten your furnace checked on yet? For the month of December, you can get your furnace tuned-up at a discounted price - $49.99. A furnace is like any other machine: it experiences wear and tear over time. No matter how reliable your furnace is, it makes financial sense to have an expert give it an annual check-up. Our technicians go through a 27-step process to ensure your heating systems are working properly and will last you all winter.