You might guess it from the name: the heat exchanger is the part of your furnace that actually heats the air your blower motor pushes through the furnace. It consists of a chamber in which the heat energy produced by natural or propane gas is transferred to the forced air. At the same time, this part also includes a vent through which the gases themselves are safely removed from the unit and the air that enters your home. Because of these gases, a problem with your heat exchanger needs to be dealt with promptly. Over time, cracks in the exchanger can result in carbon monoxide leaks. Taking care of the problem once again means understanding the existence of a range: repairing your heat exchanger can cost as little as $100, but a full replacement may cost up to $1,200.
When you change the temperature on your thermostat, or the temperature in your home drops, a signal lets the furnace's igniter know that it's time to turn on. Igniters exist in both hot water boilers and forced air furnaces, replacing pilot lights as the switch your unit needs to kick on. Naturally, this is a core part in making sure it works reliably. When it stops working, your unit will not longer know when to actually heat your home. Fortunately, furnace igniter repair doesn't tend to be a major budget problem, and costs less than $300 on average.

While there's nothing you can do to guarantee your air conditioner or furnace will never need repairs, there are ways to take better care of your system. Changing out the air filters every 3-6 months, making sure nothing is obstructing or interfering with the outside unit, and keeping all vents unblocked in well-used rooms will help keep your air conditioning and heating system operating efficiently.
Even if your air conditioning unit is still working, depending on the type of system in your home today, you could recoup your investment in a new system in as little as three years. However, that doesn't mean that your system needs to be replaced. Furnaces, air conditioners, and other heating and cooling systems have made tremendous gains in efficiency over the past five years, so if you have an older unit, it is worth taking a look at whether or not a repair is the best investment.
If you pull out your home’s air filter, hold it up to a light. If you can’t see light coming through it, it’s most likely been a while since your last heating service, and likely time to get a new one. If it’s a simple disposable air filter, just replace it with a like-size new one. It’s also a good idea to write down the date you installed the new filter, so you know how old it is next time it needs to be replaced. Check the filter packaging to see how long the new air filter is supposed to be used.
To keep your natural gas furnace operating efficiently, you should have at least an annual tune up. Natural gas furnace preventative maintenance will help avoid operating problems. When issues are addressed early on, it’s more likely that they can be resolved with minimal cost. Worn out parts and clogged filters that happen over time can lead to more significant equipment failures.
With more than 100 years in the industry, Lennox has continuously provided industry-leading innovation and technology while preserving strict durability and reliability standards. The specialists at House of Heating Incorporated help bring those standards to Marshfield so that you can always maintain total home comfort. If you’re in the market for a new HVAC system or even if you just have a question about what we can provide, give us a ring at 888-384-3163 or set up an appointment with us online. We’d love to hear from you. 
Specializing in Bryant brand heating and cooling products, we offer a broad selection of innovative, industry leading technology to improve the comfort, health, and efficiency of your home or office. Our technicians are certified and highly trained to provide residents in Thornton, CO & Westminster, CO with unmatched heating and air conditioning services, including installation, repair and maintenance. Plus, our team of plumbers offers a range of indoor and outdoor plumbing solutions, including repair and installation of faucets, fixtures, water heaters and toilets, frozen pipe prevention and repair, and natural gas line service. Give us a call and take advantage of our proven dedication and prompt response.

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