To determine if your heating system is gas or electric, check the unit's exhaust pipe, energy source, or the thermostat.
Carbon monoxide (CO) is a colorless, odorless, tasteless gas. A by-product of combustion, it can be produced by ordinary appliances, and is a common hazard in the home. Mild exposure can cause symptoms such as nausea, dizziness, or headaches; while severe poisoning can result in brain or heart damage or even death.
Furnaces typically last 15 to 20 years, but well-maintained units can often operate longer. If your furnace is 25 years old, it likely means you've been maintaining it properly by scheduling annual maintenance and routine care. However, its age puts it at a higher risk for increased repairs and a complete breakdown.
To quickly determine if your central heat is gas or electric, inspect your indoor furnace or air handler unit and look for these key indicators:
Yes, a heating system can use both gas and electricity simultaneously or alternately, most commonly known as a dual-fuel or hybrid heating system. This setup pairs an electric heat pump with a gas furnace to maximize efficiency, using electricity during moderate weather and switching to gas when it is very cold.
A simple visual inspection can easily tell you if your heater is gas or electric. If you're inspecting your heating unit and you see a flame, you have a gas heater. The flame is usually blue, and you will be able to see it clearly through the small window on your heating unit.
Gas heaters commonly employ electric fans to distribute warm air evenly throughout a space. While these fans are essential for efficient heat distribution, they can significantly impact your monthly electricity costs.
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
To quickly identify your heating system, look at how heat is delivered into your rooms:
A poorly installed heater, or a heater in a room with a lack of fresh air, can cause excessive levels of CO, and can lead to CO poisoning. Symptoms of CO poisoning include flu-like symptoms, headache, dizziness, weakness, vomiting, shortness of breath, confusion, blurred vision and loss of consciousness.
The $5,000 rule is a guideline to help homeowners decide whether to repair or replace their HVAC system. You multiply the age of your unit by the cost of the needed repair. If that number exceeds $5,000, replacing your HVAC system is often more cost-effective.
Yes HVAC prices have steadily increased over the past few years, and 2026 is no exception. These increases are affecting everything from entry-level systems to high-efficiency units, making it more expensive than ever to install or replace HVAC systems.
The heat exchanger is often considered the most costly part of a furnace to repair or replace. It is a critical component that transfers heat from the combustion process to the air that circulates throughout your home. Over time, heat exchangers can crack due to the constant heating and cooling cycles they undergo.
Heat stress and heat exhaustion can quickly escalate into medical emergencies. Three common symptoms include:
there's ringing or other sounds in your ears (tinnitus) you have double vision, blurred vision or other changes in your eyesight. your face, arms or legs feel numb or weak. you have other symptoms like changes to your pulse, fainting or collapsing, headaches, feeling or being sick.
Symptoms of carbon monoxide poisoning include:
Most homes are heated using forced-air furnaces or heat pumps powered by either natural gas or electricity. Regional climates dictate your primary source: natural gas furnaces dominate in colder northern areas, while electric heat pumps are the standard for both heating and cooling in warmer regions.
Indoor heating typically produces dry heat, which lacks moisture. As this dry air enters our sinuses, it can dry out the mucous membranes, making them more susceptible to irritation and inflammation. Inflamed sinuses are more prone to infections, leading to discomfort and even pain.
Thermal energy is transferred in four primary ways: through physical touch (conduction), fluid movement (convection), electromagnetic waves (radiation), and bulk fluid motion (advection).
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.
A detailed study from the National Renewable Energy Laboratory found residents preferred a wintertime heater setting between 67 °F and 70 °F (19 °C to 21 °C). The Department of Energy recommends a winter heat setting of 68 °F (20 °C), which matches up very well with the temperatures most of us are comfortable with.
For most customers, we recommend turning on your furnace when the weather is consistently below 18° Celsius, which usually happens to be around the end of September, or early October. Some homeowners try to put off turning on their furnace as long as they can to save money, which is okay if you're healthy adults.
The fix: Lower your home temperature to 68 degrees when you're home. Maintain comfort by adding extra layers of clothing – try fabrics like fleece, flannel and wool – and don't forget comfy slippers and blankets. If you can comfortably go a degree or two cooler than 68, your wallet will benefit even more!
A typical furnace runs for approximately 10 to 15 minutes per cycle, cycling three to eight times per hour. A short cycling system runs for less than five minutes, then quickly restarts, often cycling much more frequently. This pattern prevents efficient heating and creates massive strain on your equipment.
Unsurprisingly, heating is the number one contributor to high power usage during the colder months. Whether you're using portable electric heaters, oil-filled radiators, or reverse cycle air conditioners, these units consume a significant amount of energy.