How a Furnace Works | Repair and Replace

How a Furnace Works | Repair and Replace

Hi, I’m Vance and welcome back to Repair and Replace. Furnace is something you never really think about until it stops working, but with a little bit of knowledge, it’s much easier to troubleshoot problems. So today we ‘re gonna learn how a gas furnace works. First we’ll cover the basics, then we’ll dive a little deeper into the sequence of operation. So you can understand what each component does. Let’s begin ! Although there are some differences, all gas furnaces work in the same basic way. Natural gas is burned to warm up the heat exchanger.

The exhaust fumes are released through the flue gas vent. The blower fan then pushes air over the heat exchanger and circulates it around your home. The furnace runs until the thermostat detects the right temperature and shuts the furnace off. Modern furnaces use a draft inducer fan to help exhaust the emissions, this force draft also increases the efficiency. Condenser furnaces use a dual heat exchanger to condense water vapor , this extracts even more heat out of the combustion. Furnaces are rated by AFUE or (Annual Fuel Utilization Efficiency). This number is a ratio of the fuel burned versus the fuel converted into heat. Older furnaces will have an efficiency rating of 70 AFEU or less, meaning that only 70 percent of the fuel is turned into usable heat. Mid efficiency furnaces are around 80 and High-efficiency condenser furnaces are generally 90 and above. Furnaces can be single stage or dual stage. Single stage furnaces run at one speed, which means it’s either full heat, or no heat. Two stage furnaces can run at full speed or a reduced speed when less heat is needed.

This allows for the furnace to run quieter and may contain a more consistent temperature. Modern furnaces have a set of safety switches that shut down the furnace, when the system is compromised. if a switch is tripped, it will cause the furnace to lockout. The furnace will attempt ignition, several times before going into a hard lockout for up to an hour. Every time a lockout happens the furnace will use flashing lights, as codes to identify the source of the shutdown These codes are unique to each model so check your furnace manual to see what each code means.

When the thermostat calls for heat, voltage is sent to the control board. Next the draft inducer fan pulls fresh air into the burner, which allows for clean and efficient combustion. When the draft motor reaches full speed the pressure switch will close, allowing for the sequence to continue. The pressure switch ensures that there is enough airflow inside the heat exchanger to safely operate the furnace. If the pressure is low, the switch will stay open and will prevent the furnace from igniting. If the pressure is good, then voltage is sent to the hot surface igniter. Some furnaces might use a spark igniter instead. After the igniter heats up the gas valve opens and the burners ignite. When the flame will continue as long as the safety switches remained closed. If the flame isn’t detected after 7 seconds the flame sensor will shut off the gas. When the burner is lit, the blower fan is too late from running to allow the heat exchanger to warm up.

This prevents the furnace from circulating cold air. The blower fan then pushes the air over the heat exchanger and circulates it around your home. The limit switch monitors the temperature of the air passing over the heat exchanger and will shut off the furnace if the system overheats. Any restriction of the airflow might cause the heat exchanger to overheat. That’s why it’s essential to replace the furnace filter every three to six months. Once the thermostat signals that the temperature of the home is normalized, the gas is shut off and combustion stops. The blower motor will continue to run for several minutes until the furnace is cooled down. Finally the unit is placed in standby until the thermostat calls for heat again. Hopefully, this has given you a better understanding of how a furnace works.

Now if your furnace is having trouble running, then watch our troubleshooting guide for a step-by-step breakdown and there’s a link to this in the description below. If you found this video useful then subscribe to our Channel. We’re constantly filming new content every week, so let us know what repairs you’d like to see next and if you need a part for that repair then visit our website. We stock thousands of hard-to-find parts, and we’ll ship it out to you the same day. Thanks for watching .

Solar powered air conditioning

Solar powered air conditioning

(Music playing) (Narrator) Over 50 percent of the greenhouse gas emissions you produce in your home are generated by heating, air conditioning and hot water. In other words keeping your home warm in winter, cool in summer with nice hot water on tap is emitting 2.5 to 5 tonnes of greenhouse gas emissions each year. It also contributes a hefty amount to your electricity bill, between 50 to 60 percent. CSIRO has invented a new solar air conditioning system for Australian homes. This technology solution will reduce Australia’s emissions, reduce your energy bills and reduce our demand for electricity and gas. If every home in Australia installed our solar cooling technology it would be the equivalent of saving 15 mega tonnes of CO2 or taking 3.5 million cars off the road. CSIRO’s solar air conditioning is an innovative three in one technology that provides hot water, cooling and heating.

It uses only a fraction of the electricity of current systems and halves greenhouse gas emissions. The process begins with a typical solar hot water system. Water is heated by solar panels and stored in the hot water tank. This solar hot water can then be used throughout the home, reducing the need for gas or electricity. A portion of the hot water is diverted into CSIRO’s new solar air conditioning unit, which is divided into two compartments. The hot water enters a heat exchanger in the first compartment of the unit.

Similar to a car radiator the heat exchanger uses the hot water to heat outside air that has been drawn into the first compartment through the vent. At the same time outside air is also being drawn into the second compartment into a desiccant wheel. The desiccant wheel is the most critical part of the system. It is used to dry out the air before it goes into the house. Slowly turning the desiccant material in the wheel continuously absorbs moisture in the second compartment and then the absorbent material dries out in the first compartment. The desiccant material is dried out using the hot dry air generated by the heat exchanger. This air is then exhausted outside the home. The dry air from the desiccant wheel flows through an indirect evaporative cooler which creates a stream of cool dry air. This cool dry air is then fed into the home in order to cool down the rooms. In winter the solar heated air can be used directly to warm the house. CSIRO’s solar cooling system is a low emissions alternative to conventional air conditioning and gas or electric powered heating, providing more comfortable homes, reduced energy bills and a cooler planet.

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Best 24 Hour Furnace Repair In Frederick, Maryland

Best 24 Hour Furnace Repair In Frederick, Maryland

Are you in need of furnace repair? Is your current furnace breaking down or not operating properly? If so, you’ve come to the right place! We’re proud to be the premiere local furnace repair service and we pride ourselves on being professional, reliable and affordable. Customer satisfaction is our number one priority. Our furnace technicians have years of experience repairing all major brands of furnaces and we get the job done right the first time. So contact us now and find out why so many local customers come to us for all of their furnace repair needs. .

DIY mini split compressor in basement INTRO

DIY mini split compressor in basement INTRO

My name is Omar Lutfey I have created Lutfey Innovations to develop better heating and cooling systems today I’m going to explain our plan to install a heat pump in an existing home to increase heating and cooling efficiency a 3/4 ton 9,000 BTU power mini-split air conditioner and heat pump will be installed to supplement the existing forced air system while heat pumps are very efficient as they exist today we are testing a new installation which we believe will even further increase efficiency traditionally the compressor unit of a heat pump is installed on the outside of a building on this project we will be installing the compressor unit in the unfinished basement of the home this configuration will allow the unit to exchange heat with a constant supply of 55 degree air in the summertime the unit will draw less power adding heat to the cool air of the basement compared to the 100 degree outside hair in the wintertime the unit will remove heat from the 55 degree basement instead of from the freezing outside air in addition to increasing efficiency this setup will keep the compressor unit in a controlled environment this should increase the life of the unit as it will be stored at a constant temperature and not exposed to rain and snow our next video will show the installation process and measure the efficiency of the unit thanks for watching

Puddle Flange Installation. Why Do You Need It?

Puddle Flange Installation. Why Do You Need It?

G’day, guys. How you going? Just want to talk to you about puddle flanges We have a situation like this You can see it’s just a bathroom with a fibrous floor Highly flex floor And this is the floor waste that goes out the outside here Now normally they just maybe tile up to it like this and then they put the grate in, okay But the trouble is water can get in between there later on down the future when it all starts to move and then once it starts getting wet The termites love that you know wet wood and they’ll go nuts underneath That’s why we install something like this called a puddle flange So you can see this will be glued onto the floor with a really good silicon and this fits inside tthe pipe like this That means any water can’t come underneath it has to go through here and down into the pipe and so that means no water can come through there, you see Once that’s glued down with the silicon properly you put the nice grate on and then the membrane gets painted on the floor like this the whole way around and then the tiler can tile up to it with the 18 mm grate stuck in there And any water that goes through they can you know come through and come down and come inside the pipe and there’s no way that can you know get underneath and make this a little wet So really the solution is very important Get your plumber to chuck one of these in if you have any of these wood homes like the one up in Gooseberry Hill

Furnace Repair Giveaway

Furnace Repair Giveaway

A DAY, YOU KNOW WHAT YOU ARE LOOKING AT? IT’S OKAY, I HAVE SOMEONE WHO IS AN EXPERT WHO HAS BEEN WORKING HERE FOR SWAP — FOR QUITE SOME TIME WHAT’S WRONG WITH THE FURNACE? WE HAD A BAD CONTROL BOARD YOU DID TELL ME THAT. SO, THIS IS A BUNCH OF RELAYS IN SWITCHES AND IN THE OLD DAYS, THEY WOULD BE MOUNTED ELSEWHERE. AND WE CAN REPLACE THEM ONE AT A TIME UNFORTUNATELY, THE RELAYS WHEN OUT SO WE — WENT OUT TO WE HAD TO REPLACE THEM. THE WHOLE REASON THAT WE ARE TALKING ABOUT THIS IS IT’S THE HOLIDAYS IT’S COLD AND IT’S PROBABLY THE WORST TIME NOT THAT THERE’S EVER A GOOD TIME AND IT COULD BE EXPENSIVE TO REPLACE.

THIS COULD BE UPWARDS OF $10,000 TO REPLACE THE SYSTEM YOU KNOW, WE REPLACE THE CONTROL BOARD FOR ABOUT 500. SO, WE WANT TO LEAVE THAT DECISION UP TO YOU. AND THAT IS WHAT IS SO AWESOME ABOUT YOUR BUSINESS IS YOU ARE TALKING LAST NIGHT IT’S SO IMPORTANT WHEN YOU’RE DEALING WITH PEOPLE TO LET THEM HAS A — HAVE THAT VISION. YOU ARE WORKING — ARE WORKING WITH A FAMILY WHO NEEDED THE HEAT AND YOU ARE DOING SOMETHING PRETTY AWESOME CAN YOU TELL EVERYBODY ABOUT THE GIVEAWAY? SO, BETWEEN DECEMBER 1 AND 15th, WE ARE HAVING THE DRAWING SUBMITTING THE EMAILS AND TRYING TO COME UP WITH A DESERVING FAMILY WHO MAY NEED A REPAIR SO IF YOU KNOW ANYBODY WHO MAY NOT HAVE THE FUNDS TO MAKE REPAIRS, LET US KNOW WE WILL JOB — WILL HELP OUT A FAMILY ON THE 15th.

WHAT AN AMAZING GIFT, SO FOR PEOPLE WHO ARE HAVING THE TELLTALE SIGNS THAT THERE OR SOMETHING WRONG WITH THE FURNACE. YES, ONE OF THE SCIENCES YOU DON’T TURN ON YOUR AIR CONDITIONER OR HEATER AT THE THERMOSTAT AND IF YOU’RE JUST GETTING COLD AIR THAT IS A REALLY POSITIVE SIGN THAT YOU ARE DEFINITELY GOING TO BE TO CALL SOMEBODY OUT AND TO GET IT TAKEN CARE OF. THERE YOU HAVE IT. WE CAN HOW MUCH TIME TO GO THROUGH ALL THOSE DETAILS THAT — BUT HE WAS SAYING JUST ABOUT EVERYTHING CAN BE REPLACED GO LET THEM FIGURE OUT IF YOU NEED TO HAVE IT REPAIRED TO HAVE IT REPLACED. SO IF YOU KNOW SOMEBODY WHO NEEDS IT, ALL THE DETAILS ABOUT WHO TO CONTACT OUR OWN WEBSITE. HE WILL TAKE CARE OF YOU. .

Review Douglasville, Ga Heating and Air Conditioning Contractors — Ragsdales — Douglasville, Ga

Review Douglasville, Ga Heating and Air Conditioning Contractors — Ragsdales — Douglasville, Ga

Hey Scott here today we’re reviewing Douglasville Georgia based heating and air company now having expanded operations as a full service plumbing company that we’ve turned inside now in order to provide local residents a helpful industry review of Ragsdale’s heating and air and plumbing contractor after years leading the way is one of the finest HVAC companies in the metro Atlanta area owner artrex they’ll listen to many of the over 5,000 amazing client testimonials several of which clamored for a reliable local plumbing contractor showing why he’s one of Elena’s leaders in the HBC in plumbing industry are is answered to call by expanding his operations to add a wide array of residential plumbing services must filling as communities need for an honest and dependable plumbing contractor in our overall review including both the HVAC and plumbing operation Ragsdale screens out with excellent marks across the board browse standing customer support reputable reviews and testimonials much more so if you live in douglasville powder springs lithia springs Dallas Hiram or austell areas of West alena and you need heating and air conditioning services or outstanding plumbing services including repairs and installations check out Ragsdale’s from amongst a thousand plus HVAC and plumbing contractors in the metro area Ragsdale’s is the only company receiving our seal of industry excellence to learn more about Ragsdale’s check out their details below and give them a call today again congratulations to our Ragsdale and his entire team Ragsdale’s

Roof mounted AC (Package Unit) vs Split System

Roof mounted AC (Package Unit) vs Split System

“Make a precision decision with Precision Air. Trained professionals with integrity. Call 602FIXMYAC. Make a precision decision with Precision Air.” Hello everybody. Erik Bryan here, owner of Precision Air & Heating. Since 1995, we have performed well over 250,000 service calls across the valley. We thought, what better way to share our experience and know-how than answering some common homeowner questions. Matt from Phoenix asks, “Erik, if I get an A/C system on my roof, is it more expensive?” Good question Matt. The reality of the situation is this….the cost between a package unit on the roof and a traditional split system on the ground or in your closet or attic, should be identically the same. Now a couple of key points to note here is that the installation of a split system is typically more difficult.

Getting air handlers to fit up in the attics or getting an air handler to properly fit inside a closet or a cabinet that you might have, can sometimes be a challenge. The instillation of a package unit on the room is generally just a good, old-fashioned stand, an elbow….a crane comes in and drops the unit down…button it up, hook the electrical up…it’s really pretty simple. To answer your question, the cost between any type of equipment should be the same. Hopefully that answers your question Matt. Thank you for sharing your questions. I hope this helps shed some light on keeping your home operating properly and as efficiently as possible. If you have questions regarding your A/C, heating, plumbing, or home performance needs, post your questions on our Facebook page and check back for additional videos. Who knows, we might just answer your question next. “Make a precision decision with Precision Air.” .

Thermostat Clicks But Heater Not Turning On Fan Works AC Runs But Heat No Start Repair Video

Thermostat Clicks But Heater Not Turning On Fan Works AC Runs But Heat No Start Repair Video

Welcome back to Kung Fu Maintenance! Wanted to tell you, show you, about one I had the other day. What happened was right at the end of the day I saw that there was a work order for a no heat call. Went and checked it out. The hydronic valves were turned off and turned those on. Came over to the thermostat and turned it on but nothing turned on. I could see. the flame signal here. Much like this one. Now usually when you do it you will hear the little click when it turns on. On that particular one I did hear the click and that kind of signified to me that the thermostat was working. I turned the fan to on. The fan kicked on. I turned the A/C on and the AC kicked on. Turned it to cool and auto. Lowered the temperature down and everything kicked on there right away. So I knew at that point that it wasn’t the service door switch. Didn’t know what it was but what I did was pullk the cover off.

Now before I do that I want to show you the little click. I will raise my temperature up so the heater will turn on a little bit. You hear that click? That’s signifying that my unit is getting ready to fire up as the heater has now been signaled to turn on. But underneath. I will show you here. What you have got is your red cold jumper and the red hot jumper wire. That fatter red wire that is back there. I got kind of lucky and noticed right away that the insulation part, even much like it is here, the insulation portion was up inside the screw port. So All I had to do was loosen the screw a little bit. Move the wire down a tiny bit so that the wire was actually making contact with the screw port so we would have continuity.

And that’s all it was. The screw instead of clamping the wire down was clamping the insulation down. Insulation was making contact so that the heater wasn’t turning on even though it was sending the call for heat from the thermostat. It wasn’t being transmitted through the hot wire so. Nice easy fix. Thought I would show it to you guys. Hope it saves you some trouble.You know.

It’s rare but these are the things that happen and a little bit on the troubleshooting that happens. Obviously if a wire is not making contact there things are not going to turn on. And one other thing I had checked on this which should be checked when a thermostat is not working. One thing to check on theses is the jumper pin or the switch setting. This one has a little switch down here where right is for gas heating and left is for electric heating. That particular one was set for electric heating which is common to all of my other units for hydronic heating. So it wasn’t that. So again it was that insulation that was blocking. So that the wire wasn’t making contact on the RH wire. Anyway. Thanks for watching! .

Gas Oven Won’t Heat – How to Repair (Part 2 of 2), Replace Ignitor

Gas Oven Won’t Heat – How to Repair (Part 2 of 2), Replace Ignitor

– Alright everyone, welcome to Tomahawk DIY. Today I’m going to show you how to get the igniter unscrewed here the easy way. You can check out my other video that shows the troubleshooting to reach this point and but I neglected to show how to actually remove it easily. So let’s take a look at that. See the other video to get to this point and this is how you get the igniter off. I’m going to come under the oven. And there’s two bolts and a screw we need to undo right back there, these two bolts. Careful not to drop them or lose them. Okay, we got the two bolts. Now let’s get this screw. So, screw right there. Again, save yourself some headache, be sure you don’t drop them. It’d be hard to retrieve them under the oven.

In the other video, I already showed disconnecting the cables and the igniter right here and right there. So with those two out, that’s going to let the whole burner assembly slide out. We’re going to come up here, undo this bolt. With that bolt out, we can… get the entire igniter assembly out and then take the bolts off here. We’ll put the new one back on. Alright, so we undo the bolts that are holding this igniter in place. Now, I’ll include a link down below to Amazon where you can pick up a replacement igniter and once you’ve got your igniter off, you put the new one back on. Just reverse the entire process. Alright, with the igniter back on and before I put this back In, we need to get the leads, the wire leads, reconnected.

So we’ll undo the wire nuts. I’ll have to get these… wires off. May take a little bit of work. Now, I don’t know that it makes a difference on which one connects to which one, but we’re going to connect the same way. The red one… on this side and the white one on the other. Let’s put your wires together into the wire nut. And twist it on. Alright, with the wire nuts back, if the new igniter’s not working, probably the first thing to check is to make sure these are getting good contact with your wires. Now we can slide the entire assembly back in. We’re going to start by getting the wires down. And then after that, it’s a matter of putting the bolts back in the way you took them out and testing your igniter.

Alright, after you’ve got your wires threaded in up here and your burner, this is an important part, don’t forget to keep the burner lined up over the gas tip right here. You’ll know it’s in good spot when your bolt holds her on and this is right over the gas line. If you missed that, you might have some problems with gas coming in the wrong spot. Okay, we’ve almost got these two bolts back in.

And then one screw, that screw goes right there. And that holds the burner assembly in place. Alright, while you’re under here get your wires plugged back in. The red one on this side. And the white one… over on this side. Alright. Snap that together. With those back, come back inside and do the bolt on the top of the burner. So that’s the bolt right here. With the wires reconnected, let’s test and make sure our oven’s gonna work. (beeping) So turn it on. Okay, there we see an igniter lighting up.

Let’s see if we got a flame now. Looks hot enough for a fire to me. Ah there we go, the burner’s on. So there you have it. Now you can go back to my other video to check out the rest of the disassembly. Let’s turn this off before it gets everything too hot. Sorry, you can go back to my other video now to check out the rest of the reassembly. Obviously if you’ve done tests like this, make sure everything turns off and cools down before you get back in the oven. Make sure you’re being safe in everything you do. Don’t forget to subscribe, like the video, leave some comments and pick up some parts on Amazon. Have a great day. .