Furnace tune ups should take anywhere from 45 minutes to hour and a half, depending on what the technician has to deal with when he gets there. I was a heating and AC professional for over 10 years and I had tune ups that only took me 30 minutes, and others where it seemed like I had to practically disassemble the entire furnace, clean, then put back together. Every call is unique. However, it's important you trust your contractor. Your instincts are more accurate than you probably give yourself credit for. I don't remember a tune up ever going less than a 1/2 hr in my 10 years of experience. It just takes time to setup, take down, and perform the actual maintenance. If you figure a minute per inspection point, it should have at least taken half an hr. I've showed up to furnaces that look flawless, and I still take them apart and clean them because that's what the homeowner paid me for. If there is even a hint of a cracked heat exchanger, get a second opinion. There are scams out there, and unfortunately a 20 minute inspection wouldn't reveal that. Have whomever is making the claim show you via camera or by physically removing the combustion chamber from the furnace and showing you. As weird as that sounds, I've removed heat exchangers out of furnaces just to prove that there was an issue. A cracked combustion chamber can be a serious issue, so the fact that he said it should be fine says either he doesn't know what he's doing or he's not being truthful, or both. It's not that cracked heat exchangers are leaking carbon monoxide, it's that they can. It's the potential that makes it dangerous. Hope this helps!
The thermocouple is a copper rod that the pilot flame heats-up. When it gets hot enough, the thermocouple signals that there is enough heat to burn the gas fuel being released into the appliance—and so it allows the gas to be released to the burners. In some cases where the pilot light won’t stay lit, the thermocouple needs to be adjusted or replaced. This is generally a job for a professional.
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.
North Winds Heating & Cooling is an Okemos-owned full-service HVAC company that is available for all your heating and cooling needs in Lansing and the surrounding cities. We proudly serve the Greater Lansing area with a complete range of heating & cooling services – including residential, commercial, and industrial. Our  HVAC technicians have over 30 years combined experience in the heating and cooling field and will treat your repair or installation job like it’s their own. Our experienced HVAC team has the latest diagnostic tools and equipment needed to perform a variety of services that we offer such as air conditioning installation & repair, furnace repairs, and HVAC maintenance. 

The cost to replace your entire unit is around $4,000. That expense can range from $2,500 to $5,900, depending on the type and brand of furnace you choose. Brands particularly have an impact on that price. A Goodman electric furnace, will only cost about $2,100 for the unit and labor. On the other hand, a Trane oil furnace may cost up to $9,000 all things considered. Our Furnace Installation Cost Guide can give you a better idea on both the general cost and the differences for brands like Amana, Bryant, Coleman, and others. The brand also plays into the repair cost for your furnace. Especially the prices of individual parts can change; a York heat exchanger, for example, can cost up to $1,900, while the same component from Heil will cost as little as $400.
For all your heating, cooling and plumbing repair in Kansas City, KS, it doesn’t get any better than Anthony Plumbing, Heating, and Cooling. Let us show you why we’re the most trusted in the area; we’re sure that if you experience the hassle free, professional service that we offer, you’ll come back for all your future maintenance and repair needs. After 60 years in business we know what customers deserve, and we’ll be here to provide you with the excellent service you expect for years to come.

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