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5 Reasons Your Furnace in Ahwatukee, AZ, Keeps Turning On and Off

HVAC Tips & Tricks

During winter in Ahwatukee, AZ, any furnace issue is likely to scare you. No one wants to get stuck with a broken furnace in the middle of a cold night. Therefore, it’s understandable that you worry about a furnace that won’t stay on. Here are the top five reasons your furnace keeps turning itself on and off:

The Flame Sensor is Faulty

Your furnace has a flame sensor that detects and responds to flames. This component is important because it keeps your furnace from causing an explosion in your home. It does so by turning off the gas valve whenever it doesn’t sense a flame.

If this component becomes faulty, your heater may malfunction. For instance, it may either fail to shut off the heater or shut it off all the time.

Your furnace’s flame sensor may stop working because it’s dirty. Besides cleaning the flame sensor, having a professional maintain your furnace regularly can prevent this problem.

The Air Filters are Dirty

If your heater has dirty air filters, it may turn on and off because hot air is unable to leave the system. As your heater runs, it gathers dirt gradually around the filters, creating a buildup of dust.

The warm air that enters your home gets blocked, increasing the internal temperature of your furnace. As a result, the system may turn off before it heats your home to the desired temperature.

As the temperature levels in your home drop, the furnace cycles increase. A professional can restore your furnace by changing the air filters.

Your Furnace is Too Large

If your furnace is too big, it’ll start, heat your house quickly and turn off. It may also overheat because it doesn’t have enough room to disperse the hot air. Although a knowledgeable service technician can offer you viable solutions that don’t involve replacing the furnace, the best option is to have an HVAC expert install the right unit for you.

The Thermostat is Defective

Your thermostat regulates the heating. It makes sense to suspect it if your heater keeps shutting on and off. There are many things that could make your thermostat defective — its wiring may be faulty, or it may simply need new batteries.

If your thermostat is near a heat source, like direct sunlight, it may heat quickly and reach the set point faster than it should. A thermostat may seem like the easiest device to tinker with, but it’s also one of the easiest devices to damage.

Don’t try to fix the thermostat if you suspect it to be the source of your furnace problem. Contact an HVAC expert to inspect it and perform any necessary repairs. A service technician is the best person to determine where to place the thermostat if it’s too close to the heat source.

There’s a Blockage in Your Exhaust Vent

This problem is dangerous because it can lead to carbon monoxide poisoning in your home. Carbon monoxide is a colorless and odorless gas that your furnace disperses through the exhaust vent. If this section of your furnace gets blocked and the gas is unable to escape normally, it may leak out of the system and get into your living space.

There are many things that can block this critical part. Some examples are a bird’s nest, a beehive, snow and ice.

When something blocks the vent, your furnace works harder, causing it to turn off and off due to overheating. Getting a professional to check the vent and clear it may help you restore your heater to proper functioning.

You should only trust a certified expert to inspect your heater thoroughly and solve any issues for you to avoid costly or dangerous outcomes. Our fully trained team can handle all types of furnaces. Call REEis Air Conditioning today to let us repair your furnace and keep your home warm.

Image provided by iStock

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Frequently Asked Questions

Why is maintenance important for your air conditioning and heating system?

Regular air conditioning maintenance is essential to keep your HVAC system running efficiently, reliably, and cost-effectively. Scheduling REEIS Advanced A/C maintenance help prevent unexpected breakdowns, extend the lifespan of your unit, and improve energy efficiency, leading to lower utility bills.

Neglecting AC maintenance can result in higher energy consumption, expensive repairs, and poor cooling performance, especially during the hottest months. REEIS Advanced A/C maintenance include: condenser coil cleaning, checking refrigerant levels, testing electrical components, and airflow, ensuring your system performs at its best.

Schedule an Advanced A/C tune up with REEIS Air Conditioning to maximize comfort, minimize costs, and protect your investment in Phoenix, Scottsdale, Paradise Valley, Mesa, Tempe and surrounding areas.

What is considered an evidence based HVAC recommendation?

Every component of a HVAC recommendation should be supported by evidence. Evidence should come in the form of a reading, a picture or a technician physically showing you the condition or product they are recommending.

Most air conditioning companies, not REEIS, pay their technician with 100% commission. When a technician is paid only if they sell a product or service it can result in a technician recommending a product or service you may not need. It is always recommended that you request the technician provide you the evidence of the recommendation.

Do air conditioning system have parts which wear out?

Yes. Several air conditioning parts are wear out parts. Just like any car, there are several components which should be replaced as they are beyond their useful life. If you neglect the worn part replacement, larger, more expense repairs may result.

How long does a heating and air conditioning system typically last?

In our Phoenix's extreme climate, air conditioning systems typically have a 10 to 12 year lifespan. Well maintained systems can last significantly longer.

How often should I replace my air conditioning system's filters?

In Phoenix's heavy air conditioning use, most systems require filter changes a minimum of 30 days. Larger format filter such as the REEIS Performance Filters can last as long as 6 months.

If you do not change your filters regularly, you will restrict air flow and allow dirt to infiltrate your HVAC system. Dirt is the enemy of your heating and air conditioning system. If interior components get dirty, the performance of the system is significantly impacted. Interior components such as coils and blower wheels are expensive to clean.

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