Frequently Asked Questions

Furnace model and serial numbers are located in one of three places. They can either be located inside the furnace door, inside the furnace on the side of the burner area, or inside the furnace blower compartment.

Furnace model and serial numbers are located in one of three places. They can either be located inside the furnace door, inside the furnace on the side of the burner area, or inside the furnace blower compartment.

Furnace model and serial numbers are located in one of three places. They can either be located inside the furnace door, inside the furnace on the side of the burner area, or inside the furnace blower compartment.

Yes. The environmental protection agency requires under section 608 of the clean air act, that an individual take and pass an EPA exam to become certified to purchase and handle ozone-depleting refrigerants.

S.E.E.R. stands for Seasonal Energy Efficiency Ratio. This is the amount of cooling that your system will deliver per dollar spent on electricity. The higher the S.E.E.R rating, the more efficient the system is working. Currently, any given unit can range from 13 to 17 S.E.E.R

While changing your thermostat temperature while not home can save you money, never change the temperature more than 5 degrees. This will cause the unit to have to work harder to raise or lower the temperature, causing strain and longer run times. Additionally, this will lead to premature wear on components and failure.

All air filters and home environments are different, which means each air filter requires different time periods between changing. FixMyFurnace.com advises that you mark the date of installation or cleaning on the filter and check it after a month. After that month, the air filter should be checked weekly for any filter discoloration or buildup. Once you have established this time-frame, mark it on your calendar and change it at that date. Keep in mind that changes in the environment will effect the filter life, such as, running the fan in “ON” mode, pets, performing construction in a home, and different seasons. Following these guidelines will allow you to maximize filter life and furnace efficiency to save you money.

HVAC stands for Heating, Ventilation, and Air Conditioning.

Yes. The environmental protection agency labeled R-22 refrigerant illegal to import and manufacture in the united states on January 1, 2020.

R-22 is a HCFC (hydrochlorofluorocarbon) refrigerant and was made illegal due its chemical makeup. R-22 contains chlorine which does not break down in the atmosphere and harms the ozone layer. Newly manufactured HFC (hydrofluorocarbon) refrigerants are safer for the environment and break down in the atmosphere more easily.

A BTU is a British Termal Unit. It is a measure of heat energy calculated as the amount of heat required to raise the temperature of 1 pound of water by 1 degree Fahrenheit. Any gas, heating appliance are rated in BTU’s by the ton. 1 ton = 12,000 BTU

A capacitor is an electrical storage device created by two conductors and is often used to start or run circuits. On a furnace, a capacitor is utilized in order to start or run a psc blower motor as well as some model inducer motors. They can be tested by removing them from the circuit and using a digital multimeter set to ohms or capacitance tester and attach one lead to the load post and one lead to the common post. 

Combustion is the rapid oxidation of fuel gases when combined with heat.

Conduction is the transfer of heat from a warmer substance to a cooler substance.

A conductor is a material that allows electricity to flow easily through it.

Convection is the transfer of heat through fluids.

A damper is a movable plate used to control airflow and is commonly used in zoning systems.

DC voltage is a direct electrical current that flows in only one direction. It is most commonly used in smaller electronic devices and circuit boards.

Humidity is the measure of moisture content within the air.

Line refers to incoming voltage and load refers to out-going voltage to a device that uses the electricity to work.

An NTC (Negative Temperature Coefficient) sensor or thermistor contains resistors which reacts to falling temperatures by increasing resistance and decreasing resistance with increasing temperatures.

OHM is a measurement unit for resistance.

A transformer is a device used to increase or decrease voltage.

A schematic diagram shows the functionality of a circuit. In HVAC applications, it is commonly found on furnace blower doors, air conditioning condenser electrical compartment doors, and panels.

A nut driver is a tool used for loosening and tightening hexagonal nuts and screws.

A multimeter is a device with a digital display that performs the functions of many electrical measurement tools in one, those being an ohmmeter, voltmeter, and ammeter. Some modern digital multimeters may also measure temperature and microfarads.

A parallel circuit is a circuit in which every component has its own connection to the power source. If one component fails, this style of circuit prevents others from failing. 

CFM stands for Cubic Feet per Minute, It is a measurement unit for exhausting air flow. The higher the CFM, the greater the amount of air that is being exhausted. Different applications require different CFMs of exhausted air.

A PSC (Permanent Split Capacitor) motor is an induction type motor consisting of a stator and a rotor. The stator contains an electrical winding and the rotor fits inside the stator. When the winding is energized, it becomes an electromagnet. This type of motor utilizes a capacitor to run the motor. Without it, the motor will not operate. These types of motors are about 60% efficient, meaning that 40% of the energy used to run the motor is wasted in the form of heat. An ECM (electronically communicated motor) is about 80% efficient.

Motors which utilize a capacitor are designed specifically to only use that size capacitor. By using the wrong size capacitor, you will shorten the life span of the motor by causing excess heat, resulting in less efficiency. You may however use a higher voltage capacitor without causing any harm to the motor.

All companies have different rates, but the average cost is about $90.00. This includes the trip charge to send a technician to your home and the first 30 minutes after they arrive to diagnose what is wrong with your equipment.

No. Many people replace their furnace only. Although, if your air conditioner is over 10 years old you may want to consider this for several reasons. One reason is that furnace manufacturers design their equipment to operate together in order to gain maximum efficiency. The next reason is because it will cost you less money. On average, it will cost you around $500-800 more if you wait and replace the two units separately. Another reason you should replace your equipment at the same time is because an old AC unit may damage a new furnace if it leaks. This is problematic because a manufacturer warrantly will not cover any damages resulting from another piece of equipment. 

  1.  Check your thermostat to be sure it is working correctly.
  2. Most modern furnaces have an led diagnostic light which flashes in a specific sequence repeat. Note this code before powering off furnace. This will relate to a code found on the furnace diagnostic display sheet (example images below) located on the inside of the furnace blower compartment door and at times, on the control board itself. Find the corresponding number of flashes in order to help find what causes the issue. For example; A single flash corresponds to the code for “normal operation/idle” 
  3. Replace the blower door and insure door is properly installed and secure.
  4. Restore power to furnace and furnace will now be reset.
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