How much electric does my gas furnace use?
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- Опубліковано 10 лют 2025
- In this video I am trying to determine how many watts my gas furnace uses in a given day. The surge watts are 1404, and then running watts are around 570.
In a 24 hr period, the furnace used 2230 kwh. on the second 24hr period, it used 2410 kwh.
In summary I will be able to keep the house warm with a 1500 watt pure sign wave inverter and properly sized battery , or a 2000 watt generator.
![How Many Watts Does Your Generator Need![POWER YOUR HOME]](http://i.ytimg.com/vi/WxNFiLour3E/mqdefault.jpg)
THANK YOU! for telling us the wattage required to run a gas furnace! Nobody else is doing that!
@@cerulean999 you are welcome, thanks for watching
I appreciate the real world information. I am looking at doing the same. To me, it looks like the Harbor Freight generator is the right answer. Thanks
Mine uses 0.1A Resting/OFF (12.5W), 0.82A (103W) for 1m 45s, then peak firing (702W for 10 seconds), then running is 3.6A (450 Watts). Figure 125VAC. but yeah, 450 Watts is tiny, in order to keep warm when the power goes out. Runs for 13-18 minutes. At 12.6vdc that's 35 Amps running watts (450w).
Agree 100 %
Good info and great video. Thank.
All flame based furnaces uses a different amount of watts of electric power. After you know what a specific system uses, then you can calculate based on hourly, daily, vacation time, temperature of areas requiring heating, regularly occupied time and etc. These are the variables that determine the best standby generators needed. Not everyone has this type of heating system in their homes, some use all electric heat pumps and AC compressors. When the utilities power goes out, you’re going to need alternative energy sources to compensate. Think of the requirements of “Going Off Grid”, base those values on selecting a generation system. Remember it can be days to weeks for utilities companies to get their systems restored after a major disaster event.
Check the furnace label. It will say how much amps max it needs.
You also want to double the wattage of your inverter generator to have room for the fridge and network / computer equipment.
600w from the furnace plus 1300w fridge will require 3kw(sustained) inverter generator for the efficiency.
Do you have a video on the installation of the generator switch?
@@HealthyHearts sorry no I don’t, I believe there are a few ways to install this depending on how your main panel is bonded. I would reach out manufacturer to discuss your particulars.
Gosh, do I feel dumb. So obvious to plug the extension cord into a Kill-A-Watt meter and another outlet but it didn't occur to me! Thanks! Mine takes 1,600+ start-up watts. Was hoping for fewer.
If I’m setup with heat pump does that also need to go into generator too or can you bypass that for emergencies
@@jasonvivian9770 I’m not 100% sure I understand your setup, what is your main source of heat? If it’s gas , then you’d have like I do,but yes you’d turn off the backup source, unless of course you had a large enough generator to also power the heat pump.
Just cut the wires and install a male and female plug male side on the furnace side. And female side on the power coming from panel unplug from main then plug into power station in energencies
Never understood other invertor installs just to run a blower for a gas furnace. Power goes out and I am nice and warm in my dark house where my refrigerator is not working. Hook up a manual interlock and power these things with a small generator for the same amount of money. Or hook up your inverter instead of the generator with the manual interlock eliminating the need for your dedicated furnace green plug and allowing you optionality on what you power. Seems like a lot of inverter kit just a power furnace blower.
THANKS FOR SHARING
I have a new high efficiency furnace. It only uses 300 watts at it's peak.
wow, that's nice.
You're pinned description is incorrect. You used 22kwh day one not 2200.
Power costs are roughly .10 a kwh in America. If you used 2200kwh in a day, your furnace would cost $6000 a month.
Just a decimal placement issue but important distinction nonetheless.
You have a Nest like thermostat, that uses Wifi, to control the furnace you have on a UPS. What supplies power to the Nest? To the Wifi?
The thermostat is able to still operate in the event of a power loss. It doesnt need wifi
Most thermostats including wi-fi versions, use a small amount of electricity taken from your furnace. The control module or circuit board where you connect the thermostat to the furnace is where the power is taken. Usually "R" and "C" terminals.
1. Nest only needs power, No Wifi. Two, the power is coming from the furnace . They’re on the same circuit. His solution kills two birds w one stone! Murica!
Did you setup the EZGeneratorSwitch to be Bonded or Floating Neutral?
Using an ECOFLOW--you have to use the floating neutral--otherwise it will not work. Reason being: your furnace recognizes the neutral at your panel and then gets "confused" by the neutral of your ECOFLOW--you cannot have two dedicated neutrals!--THAT is no go.
Go floating neutral! See EZ Transfer Switches great vids! CHEERS!
This is a great video! Thank you
very interested in how to install the EZ switch
560 running watts makes sense. On most residential gas furnaces the largest portion of the load is the blower. This is typically a 3/4 HP motor which equals 559.5 watts. Throw in 500 mW for the thermostat and controls.
How do I determine the starting watts requirement for my gas furnace? The plate on the furnace says it's got a 1/2 hp motor, and it also says 9.5 under "max unit amps". Do you think the max unit amps figure is the starting or surge requirement? Thanks.
@@berettaguy7445 The 9.5 A figure is likely the starting surge current, which is about 1140 W. 1/2 hp is only about 3.11 A at 120 V. I'm ignoring power factor, which is typically 0.85 to 0.9 for a single phase induction motor under load. Might even say on the nameplate for the motor what its PF is. Add the usual 15% safety factor and you'll be okay.
Thank you.@@larrygilbert7273
Only about 500 watts to run the fan
We’re you able to record a startup wattage?
Surge watts are starting watts.
My gas ( hot water) furnace uses 28 watts
That’s what I was trying to figure out. I guess an air blower pulls a lot more power
That's most likely the electronic control circuitry. The blower (fan) is what uses the most. It will be in the 700+ watt range. It depends on the HP of your blower. That is why they talk about Running and Standing watts when calculating generator sizing.
My gas water heater uses zero watts. Old school type not these new fangled forced air ones that require power to run a blower and a larger thermopile to run the circuitry. More stuff to break and require service calls 😀
11.7 X 120 volts would give you Volt Amps, or Apparant Power, NOT True power. Since you're dealing with AC and an inductive load, you'd need to multiply by power factor. The Kilowatt should give you Power Factor
Sry but I'd build that switch instead of paying 100 bucks for it lol🤣🤣🤣🤣
Would yours be UL approved so that if you had a fire related incident the insurance company would cover it?
@SuperRobkar These are very simply constructed. It would be exactly as putting in your own electrical socket.
@@dthompsont3796 I'm not questioning the construction, What I am questioning is if your insurance company would pay the claim if your homemade one was found to be the cause that burned down your house. Are you willing to take the risk over $100?
@@IFix-Things- yes. Scare tactics don’t work for me. Be confident in your ability and knowledge. Weigh risk reward. This is too simple of an install to worry about your scenario.
@@IFix-Things good point..