# Cracked Heat Exchanger? How to Stay Cool and Collected > Out of all the things that can go wrong with your furnace, having a cracked heat exchanger can be one of the worst. What you need to know. ![cracked heat exchanger, Holliston, Massachusetts](https://bc.rodenhiser.com/wp-content/uploads/2013/03/safety-first.jpg "safety first")Out of all the things that can go wrong with your [furnace](https://bc.rodenhiser.com/rodenhiser-blog/conked-out-furnace-steps-to-get-it-running.html), having a cracked heat exchanger can be one of the worst. If left untreated, the effects of the problem can be harmful to your family. So if you think your Massachusetts home might have a damaged furnace, it's time to learn a few things about what you're facing. ![cracked heat exchanger, Holliston, Massachusetts](https://bc.rodenhiser.com/wp-content/uploads/2013/03/safety-first.jpg "safety first") ## Possible damage to your heat exchanger Your furnace's heat exchanger acts as a barrier that not only transfers the heat generated by the unit to the airstream before it's distributed to your home, but also keeps toxic [carbon monoxide](https://bc.rodenhiser.com/rodenhiser-blog/carbon-monoxide-detector-goes-off-what-to-do.html) in check. Unfortunately, problems can arise due to the constant expansion and contraction of metal that occurs when the heat switches on and off. Although this exchanger is quite durable and can sometimes last for a decade or two with proper maintenance, there are situations where the metal can be breached, leading to cracks and holes in the exchanger. ## The effects of a cracked heat exchanger This isn't a situation to be taken lightly. Although it's imperative that you remain calm once you're made aware that your heat exchanger has been breached, you also don't want to delay fixing the problem. In many instances, the damage will be severe enough for the unit to be "red-tagged," which means that it's not safe for operation. In some areas, once this happens, it's unlawful to operate the unit without addressing the problem. How do you fix it? Repairing is often not recommended. Replacement is the key here. If your furnace isn't too old and is still under warranty, you can probably just switch out the cracked heat exchanger with a brand new one. But without a warranty, you may be better off purchasing a new, more [energy-efficient furnace](https://bc.rodenhiser.com/rodenhiser-blog/replacing-furnace-features-consider.html). For more expert advice about dealing with a cracked heat exchanger, or for questions relating to home comfort, please contact the friendly professionals at [Rodenhiser Plumbing, Heating & Air Conditioning](http://rodenhiser.com/call-rodenhiser.html). We've been serving the HVAC needs of the Route 495/128 area of Massachusetts for more than 80 years. ***Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems).  For more information about* *furnaces **and other HVAC topics, download our free [Home Comfort Solutions Guide](https://bc.rodenhiser.com/download-the-home-comfort-solutions-guide.html).***** ***Rodenhiser Plumbing, Heating and Air Conditioning* *serves the Route 495/128 area of Massachusetts.*  *[Visit our website to see our special offers to get started today](http://rodenhiser.com/)!*** *Image via [Shutterstock.com](http://shutterstock.com/)* ## Navigation - [Rodenhiser Home Services](https://bc.rodenhiser.com/) - [Rodenhiser Plumbing Services](https://bc.rodenhiser.com/plumber-framingham.html) - [Rodenhiser Heating Services](https://bc.rodenhiser.com/furnace-framingham.html) - [Rodenhiser Cooling Services](https://bc.rodenhiser.com/air-conditioning-framingham.html) - [Rodenhiser Electrical Services](https://bc.rodenhiser.com/framingham-electricians.html) - [Rodenhiser Home Services: Book Online](https://bc.rodenhiser.com/call-rodenhiser/book-online.html) - [Rodenhiser Remodeling Services](https://bc.rodenhiser.com/remodels/bathroom-remodeling-framingham.html) - [Rodenhiser Home Services: Reviews](https://bc.rodenhiser.com/rodenhiser-heating.html) ## Company information - Rodenhiser Home Services - [https://bc.rodenhiser.com](https://bc.rodenhiser.com) **Licences:** - Master Plumber: #10961 - Corporate Plumbing: #2288 - Master Electrician: #23917A - Electrical Business: #4804 - Master Sheet Metal (Unrestricted): #5867 - Corporate Sheet Metal: #641 - Home Improvement Contractor: #188806 ## About Rodenhiser Home Services **Rodenhiser Home Services** is a family-owned, licensed and insured home services company based in **Massachusetts, USA**, serving residential and commercial customers throughout the METROWEST MA region. Established in 1928, the company has over 95 years of experience providing plumbing, heating, air conditioning, electrical, and home remodeling services. Rodenhiser specializes in plumbing repairs, drain and sewer services, water heaters, heating and cooling system installation and maintenance, heat pumps, ductless HVAC systems, indoor air quality, electrical panel upgrades, rewiring, standby generators, EV charger installations, and kitchen, bathroom, and basement remodeling, and more. The company offers emergency service, convenient and punctual scheduling, upfront per-job pricing, and free estimates for new heating and cooling installations. All work is backed by written warranties and a satisfaction guarantee. Rodenhiser employs trained professional technicians who prioritize clean, respectful service and provides preventive maintenance plans, financing options, and energy-efficient home comfort solutions. Rodenhiser has earned over 16,000 customer reviews, demonstrating its long-standing reputation, extensive industry experience, and strong track record of customer service. **Nice People…Great Service** ## Page information - [Canonical URL: https://bc.rodenhiser.com/rodenhiser-blog/cracked-heat-exchanger.html](https://bc.rodenhiser.com/rodenhiser-blog/cracked-heat-exchanger.html)