If submitting a service request after hours or on the weekend, please note it is best to call.
(361) 235-3905 Request Service

What You Should Know About Heat Exchangers

January 31, 2017 | Blog

What You Should Know About Heat ExchangersIn gas furnaces, heat exchangers perform the vital function of ensuring effective heating and, moreover, household safety. The burner in your furnace doesn’t directly heat the air that flows out of heating vents throughout the house. Instead, the burner flame in the combustion chamber is separated from the system airflow by the heat exchanger. The burner heats the heat exchanger. In turn, that heat is transferred to air moving through passageways within the exchanger.

The Critical Component

Heat exchangers keep the burner flame and dangerous gases that are a natural byproduct of combustion — including deadly carbon monoxide — safely separated from the airflow that flows through your home. However, over years of service, repeated expansion and contraction as this metal component heats and cools may eventually cause a crack or other defect. Rust and corrosion may also affect the integrity of the heat exchanger.

A compromised heat exchanger is a safety hazard as it may allow odorless carbon monoxide gas to silently infiltrate the furnace airflow. For that reason, many local codes require an HVAC technician to “red tag” a furnace with a defective exchanger for the safety of the home’s occupants. That means the unit is shut down and made inoperable until it can be repaired or replaced.

Stay Safe — and Warm

The best protection against a defective heat exchanger is to schedule an annual furnace checkup with a qualified HVAC service provider. This comprehensive inspection and multi-point preventive maintenance procedure includes a visual check of the heat exchanger for cracks or other defects, as well as testing the system airflow to detect presence of carbon monoxide gas.

Defective heat exchangers are typically expensive to replace. If your furnace has passed the mid-point of its normal expected service life — most gas furnaces last 15 years or so — the expense of replacing the heat exchanger alone is often not worth it. In such cases, upgrading the existing furnace for a newer (and also more efficient) unit is the preferred option.

For important information about furnace heat exchangers, and to schedule an annual furnace tuneup and inspection, contact the heating pros at CCAC.

Our goal is to help educate our customers in Corpus Christi, Texas about energy and home comfort issues (specific to HVAC systems). For more information about HVAC topics, download our free Home Comfort Guide or call us at 361-678-2495.

Credit/Copyright Attribution: “1264187/Pixabay”

Constantly Concerned About You!

Professional Team
Our ac technicians are highly trained, professional and committed to getting the job done right the first time.
Reliable Service
You can count on our expert ac technicians to provide high-quality air conditioning services with quality products and transparent pricing.
Customer Service
You deserve excellent customer service. That's why we strive to be courteous and professional through the entire service process.

What Our Customers Are Saying

Very Satisfied

I’ve had a system purchased and installed by them for several years with the maintenance contract the whole time. I’ve been very satisfied with the service. You can’t go wrong selecting them for your business.

Joseph S.

Pleasure to Work With

Mathews CCAC conducted the semi-annual inspection of the A/C, heating system for the fall check-up, Technician was on time, courteous and went quickly about the inspection and observed all COVID-19 protocols for his and our safety a pleasure to work with this company

Steven L.

Great Company

Great company. Contacted my current AC company to check on my warranty before charging me anything. Saved me a bunch of money and headache if dealing with anything. Would definitely recommend them and use them again.

Ryan W.