Dec 1, 2012 · Now understand the Lennox Pulse was not the type of high-efficiency furnace we are aware of today because it was an entirely new concept. Using the technology of the “buzz bombs” of World War II, rather than simply burning the gas as other furnaces do, it exploded it in tiny bursts that created a better energy transfer to the heat exchanger. 24 Oct 2014 ... How to replace the air flapper diaphragm on a Lennox Pulse furnace. Part can be purchased from HVAC Parts and More here: For 80000 BTU and ...The government's $1500 tax credit makes it a great time to update a lackluster heating system. Make sure to get the $1500 and then some by using this step-by-step guide upgrading y...The Lennox Pulse is a discontinued gas furnace with an AFUE of up to 95.5%. The unit had an automotive-type spark plug ignitor used on the initial cycle only, which helped …The government's $1500 tax credit makes it a great time to update a lackluster heating system. Make sure to get the $1500 and then some by using this step-by-step guide upgrading y...Elite Replacement Parts ENBGN891-1C Replacement For Baso BGN891-1C Replacement Direct Spark Ignition Module for Lennox Pulse Furnace with 6 Pin Harness Specifications: Pre-Purge 30 Seconds Trial For Ignition 5 At 8 Seconds Retry Non Reignition 60 Minutes Inter-Purge 30 Seconds Post-Purge 30 Seconds 24 VAC 50/60 Hz MV 4 Amp …The Lennox Pulse, for people who do not know, was a furnace produeced in the 1980’s that had a special enclosed chamber that was fed gas, and had a spark plug and air intake. The Lennox Pulse is not a normal furnace, it operated by creating “pulses” or miniature explosions inside the chamber, which brings me to the issue.Created Date: 7/27/2001 3:02:39 PMOriginally Posted by cisco1. We had a technician come out today to diagnose a problem with our furnace and upon inspection he noticed that there was a crack in the heat exchanger and the blower control board needs replacing (the original problem). The furnace (Lennox G26Q3/4) was installed around 1996. According to the tech, the heat … Lennox Pulse Furnace Replacement Direct Spark Ignition Control. The BGN891 24-Volt Direct Spark ignition was designed to replace the G891TCA Series ignition/flame relay control used in the Lennox Pulse gas furnace. The Lennox Pulse furnace is a popular heating system used in many homes and buildings. It is known for its efficiency and reliability. Understanding the parts diagram of this …Although Lennox built the Pulse models with heavy duty materials, they noticed a high rate of reported heat exchanger failures. As a result, Pulse furnaces produced between 1982 …Plan to replace Lennox pulse? Furnace. So I bought a new home back in December and one thing the home inspectors called out was the Lennox pulse furnace in this home and the AC unit installed with it, installed in 1986 according to the records. The furnace worked okay for the winter time, but when it came time to use the AC we immediately had ...Trust Technical Hot & Cold for the right OEM replacement part. Buy Lennox Y4749 Pulse Furnace Ignition Control Board for your Lennox Furnace new from the technical experts. Extensive product details, fast shipping, and expert supportGet free shipping on qualified Lennox Furnaces products or Buy Online Pick Up in Store today in the Heating, Venting & Cooling Department.Sep 3, 2011 · BASO BGN891-1C Module for Lennox 60J00 Pulse Furnaces. $186.73 $ 186. 73. Only 7 left in stock - order soon. Ships from and sold by ProSupplyDirect. Total price: Lennox 90469A Motor Replacement Kit. en. English (EN) Français (FR) Search. Search. Store Locator. Help. Sign In. Product Catalog. Current Promotions ... Blower Motor, 1 HP, ECM Motor Replacement Kit for Pulse Furnace, LB-90469A. Cat # : 62K45. Model/Part # : LB-90469A. This product is used in several different models. Replacement AvailableIf you're looking for a furnace, there are a few companies who sell furnaces direct online.https://amzn.to/33FKdS4There are still a few of these beasts aroun...A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. Relax. Save money every month. With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than competitive single-speed units so you pay for perfectly heated air, not wasted energy.Aug 27, 2018 · Elite Replacement Parts ENBGN891-1C Replacement For Baso BGN891-1C Replacement Direct Spark Ignition Module for Lennox Pulse Furnace with 6 Pin Harness Specifications: Pre-Purge 30 Seconds Trial For Ignition 5 At 8 Seconds Retry Non Reignition 60 Minutes Inter-Purge 30 Seconds Post-Purge 30 Seconds 24 VAC 50/60 Hz MV 4 Amp Max Blower 6 FLA @ 120 VAC Current Draw 0.2 Amp Spark Gap 0.2 Inch Max ... Hello all, Lennox is finally giving in on the Pulse units. Now first let me say I am a Pulse furnace fan, they are pretty neat units. That said, lennox will no longer make most of the "critical parts" for these furnaces. There is an aftermarket ignition control for these, made by BASO BGN891.Ther...Troubleshooting procedures for the Lennox Pulse furnaces are shown in Fig. 2-20. Figure 2-21 shows the circuitry for the G-14Q series of furnaces. Note the difference in the electrical circuitry for the G-14 and GSR-14. Blower speed color-coded wires are also indicated for the different units.After some dealers reported corrosion in some Pulse furnace heat exchangers in units installed before 1990, Lennox said in April that it would pay its dealers to inspect the furnaces. Owners of older Pulse furnaces are urged to call the company's toll-free number, (800) 537-4341, for a furnace inspection and a safety check.In today’s digital age, having a strong online presence is crucial for any business. This holds true for Lennox dealers and contractors who want to showcase their expertise and att...In 1997 Lennox had a recall of all Pulse furnaces made from day one (1981 I believe) up till January 1st 1990. The recall was due to an increasing failure rate of the stainless steel welds on the secondary heat exchanger. The rcall included a free pressure test of the HX, and free replacment of the HX including labor if it failed the pressure ...How to replace the air flapper diaphragm on a Lennox Pulse furnace. Part can be purchased from HVAC Parts and More here: For 80,000 BTU and smaller ...Find Lennox Furnace Gasket & Seal Replacement Parts at RepairClinic.com. Repair for less! Fast, same day shipping. 365 day right part guaranteed return policy. En español. 1-800-269-2609 24/7. Track Order. Log in or sign up. SHOP PARTS. Shop Parts; Appliances; Lawn & Garden; Heating & Cooling;A weak pulse means there is difficulty feeling a person’s pulse, or heartbeat, according to the New York Times. A weak or absent pulse is a medical emergency, and it usually indica...Addition of attic cleaning, sanitization, and re-insulating (blow-on insulation) was $6,235. Lennox EL296UH090V60C $45,000 (Include Ductwork) Bakersfield, Ca 3400 sq ft. 2 furnaces, 2 coils, 2 condensers. Lennox EL296V $5,339 Cincinnati 1856 sq ft. 1 and 1/2 half story home built in 1924.5 Jan 2018 ... We have a '95 Lennox Pulse 21 which received regular service. Here's our problem. In the last few days the furnace will run normal cycles ...GSR21Q “PULSE21 ”SERIES HORIZONTAL/DOWN-FLOW GAS FURNACES HORIZONTAL UNIT HEATERS AND DOWN-FLOW MOBILE HOME UNITS. *91.7% to …1. Lennox Duralok Plus™ Heat Exchanger 2. Secondary Heat Exchanger 3. Inshot Burners 4. ®SureLight Hot Surface Ignitor 5. Gas Control Valve 6. Combustion Air Inducer 7. Flame Rollout Switches 8. Direct Vent / Non-Direct Vent Sealed Combustion System 9. SureLight ® Integrated Furnace Control 10. Power Saver™ Constant Torque Blower Motor 11 ...Lennox 74M59 - Tune Up Kit for G14 and G21-80 Pulse Natural, ... 74M59 is an official OEM Tune Up Kit for G14 and G21-80 Pulse Natural for Lennox HVAC equipment. Contact. CALL US. Question? Call or text 888-757-4774 + Questions? Speak with a real person who will go out of the way to help!The first in a series on the Lennox Pulse gas furnace. This one covers theory of operation.This video is part of the heating and cooling series of training ...Lennox Furnace Model G21Q3-60-1-1 Parts. Lennox Furnace Model G21Q3-60-1-1 Parts are easily labeled on this page to help you find the correct component for your repair. Filter results by category, title and symptom. You can also view diagrams and manuals, review common problems that may help answer your questions, watch related videos, read …GSR21Q “PULSE21 ”SERIES HORIZONTAL/DOWN-FLOW GAS FURNACES HORIZONTAL UNIT HEATERS AND DOWN-FLOW MOBILE HOME UNITS. *91.7% to …When it comes to purchasing an HVAC system, one of the most well-known brands is Lennox. However, you may have noticed that prices for Lennox systems can vary greatly depending on ...1955 - Changes name from Lennox Furnace Company to Lennox Industries, Inc. 1965 - Lennox manufactures first commercial packaged direct multi-zone rooftop unit for heating and cooling. ... 1982 - Lennox develops and manufactures the industry's first high-efficiency gas furnaces - The G14 Pulse furnace. 1986 ... I have a Lennox Pulse 21 furnace Model # G2103-60-1 furnace. The problem is intermittent. When the thermostat ask for heat the fire firing series starts up and is normal, but the circulation fan does … read more *** For all you haters out there who want to flame me in the comments section ***1. This furnace has the newer heat exchanger. It's inspected every year and ...15 Feb 2022 ... Pulse pressure test is recommended to be done every 2 years. Per Lennox, "All Lennox Pulse furnaces should exceed this national standard.A single-stage furnace with Precise Comfort ® technology from Lennox ® is an innovative way to maintain energy efficiency and maximize your home’s comfort. Precise Comfort ® technology allows your furnace to adjust its heat output to any point between 35% and 100% of its maximum capacity. Highly responsive to your home’s heating needs ...Created Date: 7/27/2001 3:02:39 PM I have a Lennox Pulse 21 furnace Model # G2103-60-1 furnace. The problem is intermittent. When the thermostat ask for heat the fire firing series starts up and is normal, but the circulation fan does … read more Lennox (NYSE: LII) is a leader in energy-efficient climate-control solutions. Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems. Lennox Furnace Seal. Genuine OEM Part # 96H94 | RC Item # 2727048. Reviews. We sell the real thing! Watch Video. $12.95. Seal. ADD TO CART. Lennox Furnace Gasket. I have a Lennox Pulse Furnace. It was installed in 1991. The model number is XXXXX (or possibly G14Q4/5-100-7) the serial number is XXXXX The repair man came and would not work on it until it has a heat exchanger pressurized test done.....he said the unit was recalled for carbon dioxide leaking. We moved into the house 3 yrs ago; and did …The date code tells you when your furnace was made. For example, if your furnace’s date code is 1092 this means it was manufactured in October 1992. The model code tells you what type of furnace you have: If your model code begins with an M it means that your furnace has an electric heat strip.There’s nothing better on the market than a Lennox furnace. You've tried everything to fix your furnace, looked at the thermostat and even changed out the air filter to see if that would help. But, If your system overheats or experiences a similar malfunction, you can simply reset your furnace.Here are the 4 steps needed to reset your Lennox …The Lennox Pulse furnace safety inspection is free, but if the furnace has to be cleaned in order to be inspected, the customer could be charged for the cleaning. To identify a Pulse furnace, look for its name on the door. If the unit is a Pulse 21 furnace, it was manufactured after 1990 and is not part of the inspection program.Replaced a failed motor for one of my 2 Lennox Furnace Model G40UH-48B-090's. The unit arrived to my house a coupled days …Find Lennox Furnace Gasket & Seal Replacement Parts at RepairClinic.com. Repair for less! Fast, same day shipping. 365 day right part guaranteed return policy. En español. 1-800-269-2609 24/7. Track Order. Log in or sign up. SHOP PARTS. Shop Parts; Appliances; Lawn & Garden; Heating & Cooling;22 Jan 2013 ... A look at the flapper on the pulse at normal speed and at progressively slower speeds. This video is part of the heating and cooling series ...A demonstration of how the manifold pressure is checked on the Lennox pulse G21 gas furnace.This video is part of the heating and cooling series of training ...The Lennox pulse is a lemon. It's way too complicated for just a residential furnace. If it's 30 years old stop spending money on it and get yourself a new furnace. They don't make pulses anymore do you want to know why because they are pieces of s***. They're also very noisy when they operate nothing you can do about it.This video provides step-by-step instructions for replacing the safety limit switch on Lennox furnaces. The most common reasons for replacing the switch are ...Hello, I have a lennox 21 pulse furnace. It was installed in 1999 and was just maintenanced last fall. In the last few weeks, the furnace is not turning on and I notice the green sensor light is off.This video provides step-by-step instructions for replacing the transformer on Lennox furnaces. The most common reason for replacing the transformer is if it...March 2013. Neighbor behind us has a Lennox Pulse hot air furnace. Very loud annoying low frequency sound coming from the intake pipe out the back of her house, towards us. I mean it is just horrendous, it's everywhere. Unstopped by two wooden fences, the noise comes right through, makes our back yard unihabitable, and has even started to wake ...Explore the power of Lennox® Furnaces. Sort by. 19 MODELS LISTED. Filters: Price. $$$$ Subcategory. Gas Furnaces. Oil Furnaces. Compare. SLP99V Variable-Capacity Gas …Here are the common reasons for a Lennox furnace not staying on: Your thermostat instructs the furnace to shut down. A faulty or dirty fl ame sensor is stalling the ignition. The pressure switch fails to close or remains open. Malfunctioning gas valve is shutting the burner.Lennox technicians have the experience necessary to get the job done right the first time. Find a local Lennox air conditioner and furnace dealer near you.Elite Replacement Parts ENBGN891-1C Replacement For Baso BGN891-1C Replacement Direct Spark Ignition Module for Lennox Pulse Furnace with 6 Pin Harness Specifications: Pre-Purge 30 Seconds Trial For Ignition 5 At 8 Seconds Retry Non Reignition 60 Minutes Inter-Purge 30 Seconds Post-Purge 30 Seconds 24 VAC 50/60 Hz MV 4 Amp …22 Jan 2013 ... A look at the flapper on the pulse at normal speed and at progressively slower speeds. This video is part of the heating and cooling series ...Furnace not working? This video provides step-by-step instructions for replacing the control board on Lennox furnaces. The most common reason for replacing t...Aug 27, 2018 · Elite Replacement Parts ENBGN891-1C Replacement For Baso BGN891-1C Replacement Direct Spark Ignition Module for Lennox Pulse Furnace with 6 Pin Harness Specifications: Pre-Purge 30 Seconds Trial For Ignition 5 At 8 Seconds Retry Non Reignition 60 Minutes Inter-Purge 30 Seconds Post-Purge 30 Seconds 24 VAC 50/60 Hz MV 4 Amp Max Blower 6 FLA @ 120 VAC Current Draw 0.2 Amp Spark Gap 0.2 Inch Max ... Apr 25, 2022 · Make sure that your furnace filter has a cover over the slot, ensuring an efficient return-air system. Replace one-inch pleated filters once a month. If you’re unsure of the type of filter to use, your Lennox Dealer can recommend one based on your specific system. For all other filter sizes, your Lennox Dealer will check, clean or replace ... Created Date: 7/27/2001 3:02:39 PM10 Jan 2013 ... This is a disassembly and explanation of the air flapper valve on the Lennox Pulse G21 gas furnace. This video is part of the heating and ...Jan 14, 2012 · The perfect fix for my Lennox pulse furnace. This is the second time I have had to replace this unit in the last 20 years. Original replacement was an oem Lennox product. It plugs right in where the old units was with only one minor modifications needed. Lennox began offering limited lifetime warranties on its Pulse furnaces in 1987, prompting its competitors to come up with similar warranty programs of their own. In 1988 Heatcraft acquired another of SnyderGeneral ’ s facilities, a refrigeration products manufacturing plant in Wilmington, North Carolina .5.0 out of 5 stars Lennox pulse furnace good as new. Reviewed in the United States on March 6, 2019. Verified Purchase. The perfect fix for my Lennox pulse furnace. This is the second time I have had to replace this unit in the last 20 years. Original replacement was an oem Lennox product.Although Lennox built the Pulse models with heavy duty materials, they noticed a high rate of reported heat exchanger failures. As a result, Pulse furnaces produced between 1982 …A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. Relax. Save money every month. With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than competitive single-speed units so you pay for perfectly heated air, not wasted energy.Explanation. Oil furnace horizontal Direct drive blower, generally for both heating and cooling Stowaway unit (horizontal flow) Two meanings: 1) Expansion valve system for cooling units or 2) Vitreous coated heat exchanger on gas furnace Two meanings: 1) Water coil or 2) Wide cabinet Adapter frame Air cooled condenser Air module-hydronic heat ...Are you in need of replacement parts for your Lennox furnace? Finding the right parts can be a challenge, especially if you don’t know where to start. Fortunately, using the model ...1. Lennox Duralok Plus™ Heat Exchanger 2. Secondary Heat Exchanger 3. Inshot Burners 4. ®SureLight Hot Surface Ignitor 5. Gas Control Valve 6. Combustion Air Inducer 7. Flame Rollout Switches 8. Direct Vent / Non-Direct Vent Sealed Combustion System 9. SureLight ® Integrated Furnace Control 10. Power Saver™ Constant Torque Blower Motor 11 ...1. Before you replace the limit switch in your furnace first turn off the power to the furnace. 2. Unthread the retaining knobs securing the upper access panel and remove the panel. 3. Detach the limit switch wires. 4. Now use a quarter inch socket or nut driver to unthread the mounting screws to release the old switch. 5.G14Q3-80-18-18 Parts & Furnace Model Repair Help. Find the right Lennox Furnace Model G14Q3-80-18-18 replacement parts for your repair. Filter results by part category, part title and lawn mower symptoms. You can also view G14Q3-80-18-18 parts diagrams and manuals, watch related videos or review common problems that may help answer …HORIZONTAL/DOWN-FLO GAS FURNACES HORIZONTAL UNIT HEATERS GSR21Q March 1993 Bulletin #490054 ENGINEERING DATAENGINEERING DATA MATCHED REMOTE SYSTEMS – 50hzGAS FURNACES – 50hz NOTE — Specifications, Ratings and Dimensions subject to change without notice. 1993 Lennox Industries Inc.If the blower isn’t functioning, then the furnace will not ignite. You should hear humming noises coming from the system right before the burners ignite, if you don’t hear the sound, then the draft motor is dead. If you hear the humming sound, but your Lennox furnace still doesn’t ignite, then there might be a blockage in the vent.Don't let old man winter catch you by surprise. Make sure that your furnace is ready to keep you warm throughout the winter months with parts from Repair Clinic. If you need help locating a Lennox Furnace Gas Burner & Control Valve part, call our Customer Service Team at 1-800-269-2609.The date code tells you when your furnace was made. For example, if your furnace’s date code is 1092 this means it was manufactured in October 1992. The model code tells you what type of furnace you have: If your model code begins with an M it means that your furnace has an electric heat strip.Lennox Furnace Model G21Q3-60-1-1 Parts. Lennox Furnace Model G21Q3-60-1-1 Parts are easily labeled on this page to help you find the correct component for your repair. Filter results by category, title and symptom. You can also view diagrams and manuals, review common problems that may help answer your questions, watch related videos, read …30 Apr 1997 ... Lennox Industries. Pulse Furnace Inspection Program. P.O. Box 799900. Dallas, Texas 75379-9900. Or fax the information to: 1-800-381-7994. 2 ...March 2013. Neighbor behind us has a Lennox Pulse hot air furnace. Very loud annoying low frequency sound coming from the intake pipe out the back of her house, towards us. I mean it is just horrendous, it's everywhere. Unstopped by two wooden fences, the noise comes right through, makes our back yard unihabitable, and has even started to wake ...I have a lennox pulse furnace model g14q4-80-2 This is a good furnace, but has had issues for perhaps 4 years. The house has 2 furnaces. ( the other is lennox, but a different mdoel), so having this o … read more Lennox Pulse Furnace Maintenance. I am looking to replace the air flapper/diaphragm assembly on a Lennox Pulse furnace (Model G14Q4-80-20 installed 1987). I have a couple of parts lists with different part numbers (PNs) for the air diaphragm assembly, including LB-49997CB, LB-45918CD, LB-45918CE, or LB-45918CT. Used a stubby 11/16" and "the force " with closed eyes while reaching my hand through the terrible sized hole with poor access to get the flame sensor out in...Jun 23, 2022 · The furnace’s control panel will have a power switch on its side, which looks like a wall light switch. Make sure to turn off the circuit breaker switch corresponding to the furnace. 2. Remove the front panel of the furnace. Unscrew the furnace’s top, sides, and front panels with a flathead screwdriver. The Lennox Pulse is a discontinued gas furnace with an AFUE of up to 95.5%. The unit had an automotive-type spark plug ignitor used on the initial cycle only, which helped …2 Feb 2024 ... Lennox Pulse Furnace G14Q3-60-20 Natural gas This one was made in 1989. This Furnace proves that furnace companies today make JUNK.
Find Lennox Furnace Gasket & Seal Replacement Parts at RepairClinic.com. Repair for less! Fast, same day shipping. 365 day right part guaranteed return policy. En español. 1-800-269-2609 24/7. Track Order. Log in or sign up. SHOP PARTS. Shop Parts; Appliances; Lawn & Garden; Heating & Cooling;. Real casino slots online
2 Feb 2024 ... Lennox Pulse Furnace G14Q3-60-20 Natural gas This one was made in 1989. This Furnace proves that furnace companies today make JUNK.This high quality Genuine OEM Lennox Ignitor Assembly (19W61) lights the burner that heats the air moving through the furnace. The White Ignitor Assembly provides the ignition to the furnace system. This high quality Lennox OEM 19W61 Furnace Ignitor Assembly replaces LB-112237A, LB112237A, and 19W6101. Please be aware that it is …The laptop market is constantly evolving, with new models and features being introduced on a regular basis. To stay ahead of the competition, it is crucial for consumers and busine...Lennox offers a wide variety of filtration products, including high-performance air cleaners that remove small, allergy-aggravating particles that standard filters can't stop. Air filters are essential components of your heating and cooling system; air filters should be changed every three months.Trust Technical Hot & Cold for the right OEM replacement part. Buy Lennox Y4749 Pulse Furnace Ignition Control Board for your Lennox Furnace new from the technical experts. Extensive product details, fast shipping, and expert supportAfter some dealers reported corrosion in some Pulse furnace heat exchangers in units installed before 1990, Lennox said in April that it would pay its dealers to inspect the furnaces. Owners of older Pulse furnaces are urged to call the company's toll-free number, (800) 537-4341, for a furnace inspection and a safety check.11 Mar 2021 ... No heat Lennox, furnace not heating home to temperature, has several problems that could easily been overlooked. Try to give the customer ...Lennox Pulse furnaces - Pro-Tech Home Inspection Services. In the early 1980s, furnace manufacturers were beginning to design more energy efficient furnaces, units that could …The Lennox Pulse 21 Gas Furnace.Please rate and COMMENT!Here's a link I found online with a full parts breakdown. (Which I have absolutely no affiliation wit...Apr 25, 2022 · Make sure that your furnace filter has a cover over the slot, ensuring an efficient return-air system. Replace one-inch pleated filters once a month. If you’re unsure of the type of filter to use, your Lennox Dealer can recommend one based on your specific system. For all other filter sizes, your Lennox Dealer will check, clean or replace ... The heat exchangers weren’t just recalled, Lennox was giving people new furnaces (then a pro-rated amount, now nothing) because some of these heat exchangers were cast with the shittiest recycled cast iron available, which would repeatedly crack. This continued a long line of terrible heat exchanger designs by Lennox, starting with the G8. Lennox Pulse Furnace. JK_2 Member Posts: 6. December 2003. I want to learn how to do proper maintenace on a Lennox Pulse heater. If anyone can go over the steps or tell me how to get the Lennox's maintenace procedures I would greatly appreciate it.Jan 14, 2012 · The perfect fix for my Lennox pulse furnace. This is the second time I have had to replace this unit in the last 20 years. Original replacement was an oem Lennox product. It plugs right in where the old units was with only one minor modifications needed. Furnaces are rated by the Annual Fuel Utilization Efficiency (AFUE) ratio, which is the percent of heat produced for every dollar of fuel consumed. Like the miles-per-gallon rating on your automobile, the higher the AFUE rating, the lower your fuel costs. A furnace with an AFUE of 80 will turn 80% of its fuel into useable heat, while wasting ....