Why Is There a Blinking Red Light on My Furnace?

Seeing a blinking red light on your furnace can be concerning. Understanding the possible causes of this problem will help you determine what steps you need to take to address it. Learn more about this issue with the help of a home heating repair expert.

Low Voltage

One of the most common reasons there is a blinking red light on furnaces is low voltage. This scenario can happen if there is a recent power outage or surge in your area. It could also occur when you’ve recently added new appliances to the circuit that powers your HVAC system. A voltmeter can measure the incoming electrical current at both ends of the power line. If the readings are lower than normal, you need an electrician to balance out the voltage levels of your home’s electrical system.

System Malfunction

A system malfunction can cause your furnace could be to blame for the blinking red light. HVAC maintenance companies can diagnose this issue and help you. At Stone Heating and Air, our experienced technicians will assess your unit to determine whether it needs repairs or replacement.

Dirty Filter

Another common cause of a blinking red light is a dirty filter. HVAC filters usually require replacement every three months, depending on the type. You may need to replace yours more frequently if someone in the family has allergies or asthma.

Moreover, clogged air filters can restrict airflow, which can cause the system to overheat. You can easily avoid this problem by keeping up with your filter replacement schedule. It also helps to schedule routine HVAC tune-ups.

Clogged Drain Line

The drain line may be clogged if the air filter is not the problem. Obstructed drain lines will cause condensation and water inside the unit, eventually causing a short circuit. Regular cleaning of the drain line can help prevent this problem.

Contact a dependable technician immediately if you believe your furnace is malfunctioning. Promptly addressing issues is vital to the longevity of your HVAC system. For your help diagnosing and repairing your equipment, contact Stone Heating and Air. Besides repairs, we also offer duct cleaning services. Call us at (541) 855-5521 or fill out our online form to schedule an appointment.

Category: ,

Request An Appointment

Please subscribe me to the newsletter
This field is for validation purposes and should be left unchanged.

We had our AC go out on one of the hottest days of the year. We called as soon as they opened and they came out so quickly and offered us some loaner units to keep our babies and animals cool in the meantime. Matt was so helpful and fixed the problem quickly. He went above and beyond to help us and we will be using Stone Heating and Air to replace our unit when it’s time. They’ll be our first call in the future!

Elizabeth T.

Matt's response was extremely quick, he was very professional and friendly. He explained everything in detail and was very knowledgeable. He had my unit up and running within no time! I highly recommend calling stone heating and air. I will be signing up for the yearly service plan with them!!

Tim S.

I had a wonderful experience to hangout with this superior crewmen who came to install a new HVAC system at my house. To see these professional guys were at work with their best, I would recommend to anyone to do business with this wonderful company! Best regards

Bryan H.

I’ve used Stone Heat and Air for several projects and every time they have preformed beyond my expectations. I would highly recommend them for any of your HVAC needs.

Matthew V.S.

Excellent Service I could not have been more happy with the service, quality and honesty that I received from Stone Heating and Air. I will refer this HVAC company to all of my friends.

Gene S

Great Service, knowledgeable service technician This was for our guest house heater. I was very happy with the service provided. They were on time, polite and clean. They inspected the Monitor heater and then proceeded to clean it and they were able to fix that. Will definitely use for jobs in the future

Amanda S

Maintenance Great service, and great price

Mike J.

Great Company Dave was fantastic. He is very knowledgeable about the system and his cleaning job was incredible. He was able to explain everything that he was doing and make it make sense for general homeowner. Good Job guys!

Brian F

Excellent service! Excellent service! Knowledgeable staff! I was very impressed with the responsiveness and knowledge of your team. Shortly after 1 called for an appointment, Dave and Gino did a thorough inspection of my system and explained all of the areas that needed repair or replacement. They gave me short and long-term options and the benefits of both. HVAC is not something I know a lot about so I had appreciated their patience. Overall, it was a great experience! 5 STARS!! Highly recommend Stone Heating and Air!

John L

Related Content

winterair

Why is Winter Air Drier?

By Stone Heating & Air | December 16, 2024
Winter often brings more than just colder temperatures; it also ushers in noticeably drier air. Many homeowners experience this seasonal shift firsthand, with chapped lips, dry skin, and static electricity...
2024-09_StoneHVAC

Budgeting for HVAC Maintenance Expenses in 2025

By Stone Heating & Air | December 2, 2024
Effective budgeting for HVAC maintenance expenses is critical for businesses to maintain smooth operations and should be a priority within your 2025 operational budget. An efficient heating, ventilation, and air...
2024-09_Stone-HeatPump

Why Converting to a Ductless Heat Pump is a Smart Move

By Stone Heating & Air | November 18, 2024
If your home currently relies on a wood or pellet stove for heating, you might wonder if there are better, more efficient ways to heat your living space—especially as the...