Please upgrade your browser to receive the best experience on this website.
Houston, TX
  • Bellaire
  • Bunker Hill Village
  • Cypress
  • Jersey Village
  • Katy
  • Klein
  • Missouri City
  • Spring
  • Sugar Land
  • The Woodlands
  • Tomball
  • West University
Contact Us
jobs
Church Services Logo
  • Heating
    • Heating
    • Furnaces & Air Handlers
    • Furnace Maintenance
    • Furnace Repair Service
    • Furnace Sales & Installation
    • Heat Pumps & Packaged Systems
    • Mini-Split Systems
    • Furnace Prices
  • Air Conditioning
    • Air Conditioning
    • AC Maintenance
    • Air Conditioner Prices
    • Air Conditioning Repair
    • Heat Pumps & Packaged Systems
    • Air Conditioning Sales & Installation
    • Mini-Split Systems
  • Plumbing
    • Plumbing
    • Drain Cleaning
    • Garbage Disposal
    • Leak Detection and Repair
    • Plumbing Re-Piping
    • Residential Gas Testing
    • Water Heaters
    • Tank Water Heaters
    • Tankless Water Heaters
    • Water Heater Replacement
    • Water Heater Repair
    • Water and Sewer Line Services
  • Advantage Program
    • Advantage Program
    • HVAC
    • Water Heater
  • Commercial
    • Commercial
    • Commercial HVAC Financing Options
    • Commercial HVAC Products & Equipment
    • Service & Installation
    • Expert Commercial HVAC Maintenance
    • Expert Planned Service Agreement
    • Free Consultation
  • Electrical
  • Other Services
    • Other Services
    • Indoor Air Quality
    • Serving All Makes & Models
  • Special Offers
  • Financing
  • Service Plans
  • Blog
  • About Us
  • FAQs
(713) 396-3760
(713) 396-3760
Schedule Online
Blog

Common Furnace Problems Explained

Published on January 11, 2018
Furnace Inspection

Is your furnace making unusual noises? Or have you observed that your unit is blowing cold air when you’re expecting a comfortable blast of warm air? If so, it could be a signal that your HVAC equipment is about to fail in the middle of this cold winter season. Here are some common warnings that you shouldn’t ignore when it comes to your furnace:

Scraping Sound

If you hear a loud scraping sound that sounds like metal on metal, there is probably something faulty with the blower wheel. If you hear a sound like this, turn off your furnace promptly and call Service Experts Heating & Air Conditioning to investigate the furnace. There are several things that could be wrong with the blower wheel. First, it might just be loose and if the piece is not too damaged, can be tightened. Second, it might be that the blower wheel is broken and will require replacement. Or third, it might be that the motor mount is what broke, causing the complete blower assembly to shake uncontrollably.

Loud Bang When Furnace Starts

If there is a loud pop when your furnace turns on, there are a few things that could be occurring. Two typical culprits are a dirty furnace burner or ignitor. A dirty furnace burner or ignitor could keep the burners from igniting, causing gas to build up. When the gas finally does ignite, it will generate the loud bang you hear. This could result in a safety concern, especially if one of these small explosions caused the heat exchanger to crack. Not only could that result in a carbon monoxide leak, but you would end up having to replace the heat exchanger, which could be very pricey.

Expanding and contracting air ducts can also cause loud bangs after the heating system blower starts up. This is a common annoyance for homeowners with metal ducts. If your furnace is making the loud boom and it is produced by your air ducts, it could be a indicator of undersized ducts, obstructed vents, or a clogged air filter.

Whining Noise

If you hear a high-pitched noise, it could be the shaft bearings are in need of oil, there is an issue with the blower belt, or the blower motor is not functioning properly. A seasonal furnace tune-up will help identify these issues before they become substantial problems.

Cold Air Blowing From Heating System

There are a few reasons why your heating equipment could be giving off cold air. It might sound trivial, but the thermostat is the first thing you want to look at. It’s the starting place for any furnace technician, also. Confirm the system is set to “auto” and not “on.” If the thermostat is set to “on,” your heating system will blow continuously, even when it isn’t heating the air being released, thus blasting cold air. Flipping it to “auto” will ensure the heating equipment only blows when it’s really heating the air.

You should also check your air filters. Typically air filters need to be changed every month to keep them from becoming dirty and clogged. If they aren’t changed often enough, the clogged air filter may restrict airflow into your furnace. If this occurs, it can overheat your system, causing the system to cease heating as a precaution.

Your duct work could also be the source if it has leaks, connection problems, or was designed incorrectly, which could let warm air from the heating equipment to leak out. This would not only cause your heating equipment to blow cold air, it could dramatically run up your energy bills since your equipment is heating non-living space, and will have to work harder to keep your home warm.

There are more reasons that your heating system could produce cold air including normal system wear and tear, among others.

If your heating system is showing any of these warning signs, call Service Experts Heating & Air Conditioning at (713) 396-3760 or schedule an appointment online and we’ll send a technician to diagnose your problem and get your home warm and comfortable again in no time.

Back To Blog
Contact Us
Free HVAC for Dummies Book! Learn about furnaces!
Serving These Communities and More
  • Bellaire
  • Bunker Hill Village
  • Cypress
  • Jersey Village
  • Katy
  • Klein
  • Missouri City
  • Spring
  • Sugar Land
  • The Woodlands
  • Tomball
  • West University
Church Services
10633 W. Little York Road, Suite 200Houston, Texas 77041
Sales and Service: (713) 396-3760
Employment Inquiries: (713)722-5000
Email: servicerequests@churchservices.com
TACLA017974E | RMP17251 | MEL 74509
About Church Services
Church Services was founded with the determination of providing customers with the most excellent heating and cooling practices in the industry. Since its inception, Church Services in Houston has been dedicated to community, providing the top of the line HVAC (Heating, Ventilation, Air Conditioning) products and services in the area. If you are interested in more details about your local HVAC leaders, you can reach us at (713) 396-3760 or schedule an appointment with us online.
Read More
Search Jobs at Service Experts
Sign Up for Deals
Get super tips to assist you with keeping your home comfortable plus the latest news and offers from Church Services.
Required
Required
Required Not a valid email
Join Mailing List
© 2019 Church Services All Rights Reserved.
*Not applicable to the Advantage Program. See your signed Advantage program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.
  • Jobs
  • Privacy Policy
  • Terms of Service
  • Sitemap
  • TOP