9131 10th Avenue South, Seattle, WA 98108 Phone: 206.762.0400 Fax: 206.763.7738. Designed & Assembled in the USA Since 1958If you’re looking for a way to serve your country, the Air Force is a great option. To join, you must be an American citizen and meet other requirements, and once you’re a member, ...Forced air heating systems use natural gas, one of the most affordable substances as opposed to water or electricity. It's not only affordable, but it's also ...Find out if forced air heating is right for your home today! Skip to content. Call (888)-286-0211 7 AM - 7 PM EST - Use discount code "GIFT" to receive 5% off your purchase of $1500 or more. ... The furnace ignites a fuel to warm the heat exchanger or, in the case of an electric furnace, ...To generate heat, furnaces burn oil or gas, while heat pumps run on electricity, drawing heat from outside air—even cold air—and transferring it indoors.Gas Furnace Clearance Distances. There are several gas or oil fired heating furnace clearance distance types: Clearance from combustibles - ranging from 0" to 18" to 36" (typically) depending on the fuel type (electric, gas, oil). Working space or clearance distances - that may allow 0 on 1-3 sides but always requires working …Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite.66,000 BTU 80% AFUE Single-Stage Upflow/Horizntal Forced Air Natural Gas Furnace with ECM Blower Motor When you consider a Royalton gas furnace, quality and value are a given. Youre getting peace of mind with great features and a … TORK30 Amp 120-Volt to 277-Volt SPST 24-Hour Digital 1 Channel Timer Switch in Gray. Pickup. Free ship to store. Delivery. Free. Add to Cart. Compare. 7. $20146. Turn off the furnace if it is currently running. 2. Inspect to see if the burner is dirty or release pressure. Do this by shining a light over the burners. 3. If any of them show signs of blockage or burning debris, use a grease-cutting detergent to clean thoroughly with an old toothbrush. 4. Rinse with a rag. 5. TORK30 Amp 120-Volt to 277-Volt SPST 24-Hour Digital 1 Channel Timer Switch in Gray. Pickup. Free ship to store. Delivery. Free. Add to Cart. Compare. 7. $20146. Stelpro SFECM forced air electric furnaces are THE ELECTRIC FURNACE & are available in sizes to fit any home (10, 15, 17.5, 20, 22.5, 27.5, or 30 kW). Stelpro electric furnaces will also function great as an air handling unit (AHU) while providing back-up/additional electric heating if needed. Order yours online today!To generate heat, furnaces burn oil or gas, while heat pumps run on electricity, drawing heat from outside air—even cold air—and transferring it indoors.Overall, a furnace is the better choice for heat as it’s more efficient and can distribute the heat evenly throughout the house via air ducts. However, furnaces can be more expensive to install and run. On the other hand, fireplaces have a tough time heating up a home and usually need to be run alongside a furnace.Choose a Electric Forced Air Furnace for Efficient Heating. A forced air furnace can be a smart choice for homeowners who are looking for a powerful and efficient home heating …The aforementioned electric RV furnace is the most commonly used alternative. How Does an RV Propane Furnace Work? An RV propane heater is a forced air heater. What this means is that when the air in your RV falls below the temperature on the thermostat, hot air is forced through the vents and into the living space.But to compare the AFUE of an electric furnace to the AFUE of a gas furnace is like comparing apples to oranges. This is where the confusion comes in and why the answer is much bigger than just comparing efficiency metrics. Electric vs. Gas Furnaces. Both gas and electric furnaces are types of forced-air heating.Shop online for Air Handlers and All-Electric Furnaces. Find efficient heating solutions for your home. Place Your Order by 1 pm for Same-Day Shipping. America's Heating & Cooling Store, Est 2002. Free Shipping. See Details. My Location: Chicago, IL. 0. Home. SHOPPING ASSISTANCE. System Selector.The Comfort Plus Forced Air unit is a ducted heating system designed to be the sole heating system (“stand alone” furnace) or used in conjunction with a heat pump for residential or small commercial applications. Its ability to store off-peak energy and efficiently deliver heat makes this one of the most advanced heating systems available ...Navien offers two premium, high-efficiency hydro-furnace series: NPF Upflow and NPF Horizontal. Both gas, condensing forced-air furnace series are 97% AFUE and available in 60,000 BTU/h (9,000-60,000 capacity) and 100,000 BTU/h (14,000-100,000 capacity) sizes. Industry-leading variable capacity operation. Proven hydronic heat exchanger design.Because furnaces and heat pumps can use the same kind of air ducts to move air through your home, it’s a relatively straightforward process to replace your furnace with a heat pump. Heat pumps are a reliable method of home heating, and some models can work when it is still as cold as -27° C outside. This …Jan 3, 2024 ... But forced-air gas furnace systems with ducts lend themselves especially well to integration with a heat pump. In such cases, the heat pump's ...The cost of operating a furnace for one hour at between 75,000 and 100,000 BTU is $1.12 to $1.49 on average. Meanwhile, the cost to run a natural gas fireplace at 30,000 BTU is 45 cents an hour. Financially, it makes sense to reduce furnace output whenever possible and heat your most frequently used homes with your gas fireplace.Furnace prices by brand, region, size & BTU. A detailed breakdown of the cost of a new high-efficiency forced-air furnace in Canada. We asked Canadians who requested a quote through …Nope electric forced air, I don't have enough for a heat pump, last time I looked they were like 10 grand. A propane 96 11000 btu is like 1600 for the furance, and around 1000 for the duct stuff. A electric forced air, is something like 1600. Then I would have to upgrade my electric box so way more.This means warmer air is circulated throughout the entire home. In addition, many high-efficiency propane furnaces are two-stage or variable speed units, so they heat homes steadily and comfortably. Propane vs. Electric Efficiency. High-efficiency propane furnaces qualify for Energy Star’s Most Efficient label of 95 AFUE or higher. Breaker Size Based on Wattage. The size of a breaker is determined by the amp draw. The exact amps an electric furnace requires is solely based on the size of the furnace and its performance capabilities; however, typically electric furnaces require a draw between 60 and 80 amps. By multiplying the volts by amps you will receive total wattage. 7% off. Stelpro. Stelpro Electric Furnace | SFECM Series. From$3,239.00$3,483.20Sale. 5.0 / 5.0. 1 review. Canadian-made Forced Air Electric Furnaces Compatible with Heat Pumps & Air Conditioners. Upgrading to a modern, high-tech heat pump systembut want the added security of having supplemental or back-up heatingfor those cold days? The Important Stuff: Furnace short cycling is identified by frequent starts and stops of the furnace, running for less than 3-5 minutes, and can lead to uncomfortable temperature fluctuations and increased energy bills.; Common causes of short cycling include thermostat problems, incorrect furnace size, inadequate …3. Blower motor is bad. A bad blower motor is another cause for a tripping circuit breaker. One way that a blower motor can go bad is by seizing up. A seized motor will almost always trip a circuit breaker. It’s easy to tell if a blower motor is seized– you just turn it with your hand.Mr. Heaters 1500-Watt 120-Volt forced air space heaters simple and durable design make them an excellent heating solution in many applications. Whether you need to keep your feet warm under your desk or your pipes from freezing under your house, this thermostatically controlled 5100 BTU heater will do the trick.Your electric furnace isn’t blowing hot air because of wrong thermostat settings, a tripped circuit breaker, a dirty air filter, a faulty sequencer, or broken heating elements. Fix the issue by checking the thermostat and circuit breaker and replacing the air filter, sequencer, and heating elements. No matter what’s causing your equipment ...An electric furnace uses electrical energy to warm air for distribution throughout the home. An electric forced-air heating (EFA) system includes a heating element, comfort controls, and a forced-air distribution system, each covered in other guides. The source of power, electricity, runs through the electrical service panel .The benefits of modern, high-efficiency HVAC equipment can’t be overstated. Energy costs for even mid-sized homes can run as high as $200-$500 per month for as many as 4-6 months of the year. By contrast, a high-efficiency gas furnace can absolutely cut those costs to as low as $150-$200 for many homes. Regardless of home size …On average, an electric furnace costs between $1,800 and $7,100 for the unit and installation. However, this cost most accurately reflects replacing an electric furnace. If you install a new electric furnace heating system, your electric furnace cost can double to $15,000 or more. Low end. Average cost range.In this post, we’ll explain how gas and electricity vary in two common forced-air heaters: the furnace and the heat pump. Furnaces. Furnaces are one of the most common heaters used throughout the country–especially their gas-powered variation. However, electric furnaces are also able to provide homeowners …Furnace prices by brand, region, size & BTU. A detailed breakdown of the cost of a new high-efficiency forced-air furnace in Canada. We asked Canadians who requested a quote through …With models to fit almost every sized home, BPH Sales has a new furnace for every home! We offer the following types of furnaces: High-efficiency Condensing Gas Furnaces. Also known simply as High Efficiency Furnaces or as High Efficiency Forced Air Furnaces. Sizes from 30,000 BTU to 135,000 BTU. Natural gas furnaces.Both gas furnaces and electric furnaces are forced air heating systems. That means that both heat air directly, and then distribute that heated air ...Heat pumps offer an energy-efficient alternative to furnaces and air conditioners for all climates. Like your refrigerator, heat pumps use electricity to ...Apr 29, 2022 · Electric Furnace Sizing Calculator. Locate your climate zone on the map above and provide your square footage. You'll get how many Kilowatts needed for your electric furnace. Recommended Electric Furnace Size: 9 - 11 kW (30,000 - 35,000 BTU) Recommend 6 AWG Copper Wire or 4 AWG Aluminum Wire; 60 Amp Circuit Breaker. 10,000 Watt Forced Air Electric Furnace with Thermostat. (27) Questions & Answers (29) Hover Image to Zoom. $ 694 32. Pay $644.32 after $50 OFF your total qualifying purchase upon opening a new card. Apply for a Home Depot Consumer Card.Buy in monthly payments with Affirm on orders over $50. Learn more. Customize Electric Furnace - Goodman Forced Air MBVC 1201 CFM Variable Speed. Electric Furnace. 1 x Electric Furnace - Goodman Forced Air MBVC 1201 CFM Variable Speed -Electric Furnace - Goodman Forced Air MBVC 1201 CFM Variable Speed - MBVC1201AA-1 + …The longer the warranty, the more durable the furnace tends to be. The cost to repair your furnace can vary greatly depending on what is wrong with it. A typical HVAC repair will start with a $50 to $100 inspection fee. The total costs of the repairs, including parts and labor, usually ranges from $300 to $450.Examples of external forces include the force applied to the system, air resistance of an object, force of friction, tension and normal force. Internal forces include the force of ...Heat may be from a gas burner, oil burner, heat pump, electric heating elements, solar source, or another fuel or energy source. The burner in the furnace heats a heat exchanger ... Coleman said could put adjustable low limit switch on model 7856-856 forced air furnace, purchased at021 ...Shop online for Air Handlers and All-Electric Furnaces. Find efficient heating solutions for your home. Place Your Order by 1 pm for Same-Day Shipping. America's Heating & Cooling Store, Est 2002. Free Shipping. See Details. My Location: Chicago, IL. 0. Home. SHOPPING ASSISTANCE. System Selector.Product Description. The Stand-A-Lone all Electric Forced Air Heating system is designed primarily for 50 amp Park Model Trailers, but can be used on coaches where there is not enough room to install our Add-On system to an existing gas furnace. It fits in the same foot print as the standard RV gas furnace but DOES NOT require a gas …SUP30-A240V20. 30 kW (~102,400 BTU/hr) 5 tons. Dettson Supreme Advantage electric furnaces are available in sizes to fit every home, with sizes from 10 kW to 30 kW. These forced air electric furnace use energy efficient ECM motors & 2-stage heating elements to improve home comfort. Use this electric furnace alone or with a heat pump system.Forced air heating systems use natural gas, one of the most affordable substances as opposed to water or electricity. It's not only affordable, but it's also ...Electric furnace prices can range from $585 to $1,074. A new electric furnace cost to install can range from $767 to 3,523 or more. Total costs vary by local labor rates, brand choice, and a few other …Series Nortron OFE-B. Energy Efficient Electric Furnace. Series Nortron OFE-ECM. Advantage Electric Furnace. Series OFE-A. Comfort Electric Furnace. Series OFE-C. Ouellet sets the benchmark for electric space heaters. At Ouellet Canada Inc., we are committed to becoming North America's leading manufacturer of electric space heaters.Furnace benefits. Furnaces are typically cheaper compared to heat pumps, but the price varies depending on unit size and features. If you prefer hot, toasty temperatures inside your home, a furnace might be the better option for you. While heat pumps are more energy efficient, furnaces have fewer moving parts, which …The following are the different ways to tell if you have a gas or electric furnace for your forced air heating system. Start by turning up the heat on the thermostat (you need to see if you can see gas burner’s flame). 1. Read the Label. This could actually be the fastest or easiest thing you can do.88,000 BTU 80% AFUE Single-Stage Upflow/Horizntal Forced Air Natural Gas Furnace with 4 Ton ECM Blower Motor. Add to Cart. Compare. More Options Available $ 1613. 00 /box (2) Model# MGM96SE070B3XA. ... 51,182 BTU 2 - 3.5 Ton Mobile Home Electric Furnace with ECM Blower Motor. Add to Cart. Compare. More Options Available $ 3370. …An electric heat versus oil heat comparison must examine respective heating methods. Electrical systems incorporate either resistance heating or heat pumps. Resistance heating comes in two forms: forced air furnaces and zonal heaters. Electric furnaces have blowers that send cool air over several heating elements.On average, an electric furnace costs between $1,800 and $7,100 for the unit and installation. However, this cost most accurately reflects replacing an electric furnace. If you install a new electric furnace heating system, your electric furnace cost can double to $15,000 or more. Low end. Average cost range.No, not all furnaces have fresh air intakes. Furnaces in older homes draw air from attics, crawl spaces, and other unused spaces. If your furnace does not have a fresh air intake, you can install an intake yourself or have an HVAC company perform the work. Electric furnaces do not need air intakes because …An electric forced-air furnace uses a blower unit to blow air over electrically-heated coils. The warm air is then distributed through the home through ducts.Looking at the oil furnace vs electric furnace comparison, let’s start by analyzing upfront costs. Average cost, including furnace installation is about $400 - $600 more for an oil furnace. 1 If you need to also install a tank for the fuel oil, add another roughly two thousand dollars for the oil furnace. 1 Both types of furnaces are often installed as a central, …Oct 21, 2020 · An electric furnace is an environmentally friendly option, if you can afford the energy costs. Here is how an electric furnace works. In some regions or circumstances, electricity is the preferred energy source for a forced-air heating system—though electric furnaces are quite uncommon because of the high cost of electricity as a furnace fuel in most regions. No, not all furnaces have fresh air intakes. Furnaces in older homes draw air from attics, crawl spaces, and other unused spaces. If your furnace does not have a fresh air intake, you can install an intake yourself or have an HVAC company perform the work. Electric furnaces do not need air intakes because …Apr 13, 2023 ... On average, an electric furnace costs between $1,800 and $7,100 for the unit and installation. However, this cost most accurately reflects ...Breaker Size Based on Wattage. The size of a breaker is determined by the amp draw. The exact amps an electric furnace requires is solely based on the size of the furnace and its performance capabilities; however, typically electric furnaces require a draw between 60 and 80 amps. By multiplying the volts by amps you will receive total wattage. Electric resistance heating may also make sense for a home addition if it is not practical to extend the existing heating system to supply heat to the new addition. Types of Electrical Resistance Heaters. Electric resistance heat can be supplied by centralized forced-air electric furnaces or by heaters in each room. 10,000W 240V portable forced air electric construction heater Variable heat output of 7,000–10,000 Watts / 7kW–10kW Use at job sites/construction environments; electricity needed 7% off. Stelpro. Stelpro Electric Furnace | SFECM Series. From$3,239.00$3,483.20Sale. 5.0 / 5.0. 1 review. Canadian-made Forced Air Electric Furnaces Compatible with Heat Pumps & Air Conditioners. Upgrading to a modern, high-tech heat pump systembut want the added security of having supplemental or back-up heatingfor those cold days? Navien offers two premium, high-efficiency hydro-furnace series: NPF Upflow and NPF Horizontal. Both gas, condensing forced-air furnace series are 97% AFUE and available in 60,000 BTU/h (9,000-60,000 capacity) and 100,000 BTU/h (14,000-100,000 capacity) sizes. Industry-leading variable capacity operation. Proven hydronic heat exchanger design.If you are looking for an environmentally friendly option that can heat your home quickly and evenly, an electric forced air heater may be your best option. Superior Home Supplies …Summary. Supply temperature when heating with the furnace should be 130°F to 140°F at the furnace and about 110°F to 120°F at the supply vent. If your supply air temperature is outside this range, there’s a problem. Fortunately, most furnace under and overheating issues can be diagnosed and fixed with ease.The air coming out of the vent when heating should be 85 to 90 degrees for most homes, or 15 to 20 degrees warmer than the air in the room. The air is hotter when it leaves the furnace – and the maximum allowable temperature rise through a furnace is usually 30 to 70 degrees based on the manufacturer’s specifications.Nope electric forced air, I don't have enough for a heat pump, last time I looked they were like 10 grand. A propane 96 11000 btu is like 1600 for the furance, and around 1000 for the duct stuff. A electric forced air, is something like 1600. Then I would have to upgrade my electric box so way more.SUP30-A240V20. 30 kW (~102,400 BTU/hr) 5 tons. Dettson Supreme Advantage electric furnaces are available in sizes to fit every home, with sizes from 10 kW to 30 kW. These forced air electric furnace use energy efficient ECM motors & 2-stage heating elements to improve home comfort. Use this electric furnace alone or with a heat pump system.The architecture of high-efficiency furnaces means that they have their own fresh air intake. This means that they don’t use the air inside your home; rather, they draw air from outside. However, this doesn’t mean you don’t need an external fresh air intake because you’ve installed a 90% furnace. Indeed, these …Aug 1, 2023 · Low long-term cost. Gas heating is traditionally cheaper than electric heat. Faster full-home warmth. Hot air produced by gas heat travels through your home at 120 to 140 degrees, effectively and quickly warming the space. No delivery needed. Natural gas is delivered to your home through a series of underground pipes. 88,000 BTU 95% AFUE Single-Stage Upflow/Horizontal Forced Air Natural Gas Furnace with ECM Blower Motor. Add to Cart. Compare $ 1358. 82 (11) Model# 80G1UH090BE16. ... 51,182 BTU 2 - 3.5 Ton Mobile Home Electric Furnace with ECM Blower Motor. Add to Cart. Compare. More Options Available $ 3370. 33 (14) Model# TM9E100C16MP12. Buy a furnace and air conditioner package and save 10%. Canada HVAC is your one-stop shop for energy-efficient furnaces, air conditioners, and other HVAC products. We can help you find the best heating solutions for your home and connect you with a local installation specialist. Give us a call or get in touch via our contact form today. A fan and a ductwork system are then used to distribute the warm air around every room in your home. Electric furnaces: equipped with state-of-the-art motors, ...Heat pumps offer an energy-efficient alternative to furnaces and air conditioners for all climates. Like your refrigerator, heat pumps use electricity to ...Installing a furnace humidifier can greatly improve the comfort and air quality in your home. However, before you decide to invest in this beneficial appliance, it’s essential to u...Top Furnace Brands. These are the best furnace brands based on our in-depth methodology: Carrier: Best Performance. Lennox: Best Energy Efficiency. Bryant: Best Packaged Systems. Trane: Best Warranty. Amana: Best Comfort Control. American Standard: Best Value. Daikin: Best Heat Exchangers.Generally, you will require 25-30 BTU per square foot in warmer regions like California. So, a 1500 sq feet with 25 BTU energy requirements needs a 37,500 BTU furnace. If you live in colder areas of California, you can prefer calculating with 30 BTUs. That gives us an overall furnace size of 45,000 BTU. However, the same …Aug 28, 2022 · A midrange, new furnace costs between $1,500-$6,000 (for example, a Rheem furnace, which has an 80% AFUE rating, costs $1,488 plus installation). Opt for a high-end model with a higher AFUE rating ... Electric furnace prices can range from $585 to $1,074. A new electric furnace cost to install can range from $767 to 3,523 or more. Total costs vary by local labor rates, brand choice, and a few other …The way it works is that electricity entering the furnace moves first into the sequencer, which then routes the power to the first of the heating elements through a conduit. The sequencer will not allow voltage to move to the next element in the sequence until the conduit reaches a set temperature. The process then repeats with the next …This burner heats the air that will circulate throughout your home. An electric furnace does the same thing, but instead of using gas to ignite a pilot light, ...Aug 28, 2022 · A midrange, new furnace costs between $1,500-$6,000 (for example, a Rheem furnace, which has an 80% AFUE rating, costs $1,488 plus installation). Opt for a high-end model with a higher AFUE rating ... Gas vs Electric. Both gas and electric furnaces that are part of a forced-air heating system produce heat, but they use different means to accomplish that. Installation & Maintenance. When it comes to installation, electric furnaces are definitely easier to install and maintain over time compared to gas furnaces.
Inside the electric furnace are a series of heating elements, each of which contains a coil that conducts electricity and heats up as it does. It’s similar to the metal strips inside a toaster. The sequencer keeps the heating elements from all turning on at the same time. Voltage enters the sequencer and is directed to the first heating element.. Nice hikes near me
Feb 4, 2020 ... Electric forced air furnaces, electric convection heaters and electric radiant floors also use electrical resistance heating. Heat pumps are ...Apr 29, 2022 · Electric Furnace Sizing Calculator. Locate your climate zone on the map above and provide your square footage. You'll get how many Kilowatts needed for your electric furnace. Recommended Electric Furnace Size: 9 - 11 kW (30,000 - 35,000 BTU) Recommend 6 AWG Copper Wire or 4 AWG Aluminum Wire; 60 Amp Circuit Breaker. Aug 28, 2022 · A midrange, new furnace costs between $1,500-$6,000 (for example, a Rheem furnace, which has an 80% AFUE rating, costs $1,488 plus installation). Opt for a high-end model with a higher AFUE rating ... 1500-Watt 360° Surround Fan Heater. Fan forced heat is quickly circulated by a fan that forces air past the heating element. With 2 heating levels, the heater bring you more choices for warming experience and fan only setting is good for all season use. The built-in adjustable thermostat maintains the perfect comfort level. 34,120 BTU Ceiling Mount Hardwired Electric Forced Air Garage Heater with Remote Control. Add to Cart. Compare. Top Rated $ 255. 58 /box (350) NewAir. 17,060 BTU 5000-Watt 240V Ceiling Mount Hardwired Electric Shop Garage Heater. Add to Cart. Compare $ 360. 49 (12) Dyna-Glo. 25,590 BTU 7,500-Watt Electric Garage Heater with Bluetooth …The Air Conditioning, Heating, and Refrigeration ... Just about any electrical ... Remember, if your system gets too hot, you should keep a cool head and get your ...Jan 10, 2024 · Electric forced-air furnace efficiency An electric furnace or boiler doesn’t lose heat up its flue because it doesn’t have a flue. For this reason, it typically will have an AFUE in the 95 percent to 100 percent range. Aug 1, 2023 · Low long-term cost. Gas heating is traditionally cheaper than electric heat. Faster full-home warmth. Hot air produced by gas heat travels through your home at 120 to 140 degrees, effectively and quickly warming the space. No delivery needed. Natural gas is delivered to your home through a series of underground pipes. Gas furnaces are often described as providing a more forceful or powerful heat, and many people notice that gas heat feels warmer than electric heat. The reason for this is that gas furnaces heat the air to between 120 and 140 degrees Fahrenheit. An electric furnace, however, only heats the air to about 95 degrees — below body temperature. Most gas furnaces work through the ‘forced warm-air distribution system’. Two of the key parts of the system are the burner and the blower motor. To define furnace cycling, you must understand these two parts’ roles. While your thermostat detects a temperature drop, it lets the burner prepare hot air through the heat exchanger.Custom HVAC & Boiler Solutions. Learn More. Shop & Garage Heaters. THE BEST BRANDS AT THE BEST PRICES. Greenhouse & Garage Heaters. Reznor, Modine Hot …Electric Heating Unit Components make use of various parts that work together to produce heat. Additional components are attached for air quality and comfort, such as air filters and e-furnace controllers. These Electric Heating Unit Components work together to provide a comfortable environment.; The global electric furnace market size …Electronic Air Cleaner, 16 x 25 with Performance Enhancing Post-Filter . F300 optimizes efficiency with airflow capturing up to 98% of particles that pass through it. It operates with all gas, oil and electric forced warm air furnaces and AC systems, and is available in four sizes to fit most ducts.Oct 21, 2020 · An electric furnace is an environmentally friendly option, if you can afford the energy costs. Here is how an electric furnace works. In some regions or circumstances, electricity is the preferred energy source for a forced-air heating system—though electric furnaces are quite uncommon because of the high cost of electricity as a furnace fuel in most regions. .