How Much Was the First Microwave? Price & History Guide

Introduction

Few kitchen appliances have changed daily life as completely as the microwave oven. Today, it is hard to imagine a modern kitchen, office break room, or dorm room without one. Yet the very first microwave oven was nothing like the compact, affordable countertop models found in stores today. It was enormous, expensive, water-cooled, and intended almost exclusively for commercial restaurants and institutions.

If you have ever asked yourself how much was the first microwave?, the answer is surprising. The earliest commercial units cost thousands of dollars in the 1940s, placing them far out of reach for the average household. Understanding that original price requires looking at the technology, the company behind it, and the economic conditions of the postwar era.

This guide covers the complete history of the first microwave oven, from its accidental discovery during radar research to its original price tag, the early models that followed, and how microwave pricing evolved over the decades. You will also find a comparison table, step-by-step explanation of how the first unit worked, practical tips for vintage microwave buyers, common misconceptions, and a frequently asked questions section.

Table of Contents

• The Origins of Microwave Cooking
• What Was the First Microwave Oven?
• How Much Was the First Microwave?
• Early Commercial Microwave Models and Prices
• From Commercial Kitchens to Home Countertops
• Why Was the First Microwave So Expensive?
• How Microwave Prices Changed Over the Decades
• Comparison Table: Early Microwaves vs. Modern Microwaves
• Step-by-Step: How the First Microwave Worked
• Cultural Impact of the First Microwave
• Tips for Buying a Vintage or Antique Microwave
• Common Mistakes and Misconceptions About the First Microwave
• Frequently Asked Questions
• Conclusion

The Origins of Microwave Cooking

The story of the first microwave oven does not begin in a kitchen. It begins in a radar laboratory during World War II. In the 1940s, Raytheon was a leading manufacturer of magnetrons, the vacuum tubes that generate microwaves for radar systems. These systems were critical for detecting enemy aircraft and ships, and engineers worked constantly to improve their power and reliability.

The turning point came in 1945, when an engineer named Percy Spencer was standing near an active radar set. Spencer noticed that a chocolate bar in his pocket had melted. Curious, he began experimenting with other foods. He placed popcorn kernels near the magnetron, and they popped. He tried an egg, which exploded from the rapid internal heating. Spencer realized that microwaves could cook food by exciting water molecules, generating heat throughout the item rather than relying solely on external heat from an oven or stove.

Raytheon quickly recognized the commercial potential. Spencer and the company filed a patent for a microwave cooking apparatus, and engineers began developing a practical oven based on radar technology. The result was not a household appliance but a large, industrial machine designed for high-volume food service.

What Was the First Microwave Oven?

The first commercially available microwave oven was the Raytheon Radarange, introduced in 1947. It bore little resemblance to the modern countertop appliance. The original Radarange stood nearly six feet tall, weighed approximately 750 pounds, and required water cooling for its magnetron. It was also extremely powerful by early standards, capable of cooking food much faster than conventional ovens of the time.

Because of its size and plumbing requirements, the Radarange was installed in restaurants, train dining cars, ships, and institutional cafeterias. It was not marketed as a countertop appliance for home use. Instead, it was sold as a piece of commercial kitchen equipment, similar in concept to a large convection oven or industrial steamer.

Raytheon positioned the Radarange as a labor-saving device for businesses that needed to serve meals quickly. Early adopters included upscale restaurants and large-scale food operations where speed mattered more than the initial purchase price. The machine represented a radical leap in cooking technology, but its cost and scale meant it remained out of reach for ordinary consumers for many years.

How Much Was the First Microwave?

The question how much was the first microwave? does not have a single, simple answer because historical sources vary slightly, but the consensus is that the original Raytheon Radarange sold for approximately $2,000 to $3,000 when it was introduced in 1947. At the time, that was an enormous sum for a kitchen appliance.

To put that figure in perspective, the average annual income in the United States in the late 1940s was roughly $3,000. This means the first microwave oven could cost nearly as much as a typical worker earned in an entire year. For comparison, a new automobile in the late 1940s might cost between $1,500 and $2,500, so buying a Radarange was comparable to purchasing a car.

When adjusted for inflation, that original price range translates to roughly $25,000 to $40,000 in today’s dollars, depending on the exact calculator and year used. Even at the lower end of the estimate, the first microwave was a luxury investment reserved for commercial establishments with substantial budgets.

The high price was not merely a result of novelty. The Radarange contained expensive components, including a high-powered magnetron, a complex waveguide system, heavy-duty steel casing, and a water-cooling mechanism. Installation often required plumbing and electrical work, adding further cost for the buyer. Raytheon was selling a piece of advanced electronic equipment, not a simple countertop gadget.

Early Commercial Microwave Models and Prices

Following the introduction of the first Radarange, Raytheon continued to refine the technology and released additional commercial models throughout the 1950s. These units remained large and expensive, but incremental improvements made them somewhat more practical for restaurants and institutions.

Other manufacturers eventually entered the commercial microwave market, though Raytheon remained the dominant name in the early years. Prices gradually came down as manufacturing processes improved and competition increased, but even by the late 1950s, a commercial microwave was still a major capital purchase for most food service operations.

It is important to distinguish these early commercial machines from the home microwave ovens that would arrive later. The first microwave ovens were not designed to sit on a kitchen counter. They were freestanding or built-in units requiring dedicated space, ventilation, and sometimes water connections. The shift from commercial equipment to household appliance took roughly two decades.

From Commercial Kitchens to Home Countertops

The transition from commercial Radarange units to affordable home microwaves happened in stages. In 1955, the Tappan Stove Company introduced a wall oven that used microwave technology. Priced at approximately $1,295, it was cheaper than the original Radarange but still far too expensive for most families. Like the Radarange, it was a built-in unit rather than a portable countertop model.

The real breakthrough for home use came in 1967, when Amana, a division of Raytheon, introduced the first countertop Radarange designed specifically for residential kitchens. This model retailed for around $495. While still a significant purchase, it was dramatically more accessible than the 1947 commercial unit. The Amana Radarange was compact enough to sit on a countertop, did not require water cooling, and was marketed directly to consumers.

Throughout the 1970s and 1980s, microwave prices continued to fall as more manufacturers entered the market, production scaled up, and the magnetron became cheaper to produce. By the 1980s, microwave ovens had become a common fixture in American households, and prices had dropped to the point where most families could afford one.

Why Was the First Microwave So Expensive?

Several factors contributed to the high price of the first microwave oven. Understanding these reasons helps explain why it took so long for microwaves to become affordable household items.

• Expensive components: The magnetron was a costly piece of hardware originally developed for military radar. Producing it in small quantities for ovens kept prices high.
• Size and materials: The original Radarange used heavy steel, thick insulation, and a large cabinet. Shipping and installation added to the overall expense.
• Water cooling: Early magnetrons generated substantial heat and required a water-cooling system. This meant the oven needed plumbing, which complicated installation and increased cost.
• Limited production volume: Because the market was limited to restaurants and institutions, Raytheon could not benefit from the economies of scale that later mass production would provide.
• Commercial pricing: The Radarange was sold to businesses that could justify the cost through faster service and labor savings. There was no incentive to price it for individual consumers.

Only after the technology matured, solid-state components replaced some expensive parts, and manufacturers targeted the home market did prices fall to levels that made sense for average households.

How Microwave Prices Changed Over the Decades

Microwave pricing followed a classic technology adoption curve. Early models were expensive luxury items, but as production volume increased and competition grew, prices dropped steadily.

In the 1940s and 1950s, commercial microwaves cost thousands of dollars and were rare outside major restaurants and institutions. By the 1960s, built-in home models appeared at prices above $1,000, still out of reach for many families. The 1967 Amana countertop model at roughly $495 marked a psychological turning point, bringing the price below $500.

During the 1970s, more brands entered the market, and prices continued to decline. By the end of the decade, many home microwave ovens sold for a few hundred dollars. The 1980s saw widespread adoption, with basic countertop models becoming affordable for most households. By the 1990s and 2000s, microwaves had become commodity appliances, with basic models available for under $100 and premium models offering convection cooking, sensor controls, and stainless steel finishes at higher price points.

Today, a new microwave can cost anywhere from $50 for a simple compact unit to several hundred dollars for a high-end convection or over-the-range model. The contrast with the first microwave’s price is stark, illustrating how quickly advanced kitchen technology can become affordable once it moves beyond early commercial applications.

Comparison Table: Early Microwaves vs. Modern Microwaves

The table below compares the first commercial microwave, an early home model, and a typical modern countertop microwave to show how much the technology, size, and price have changed.

Model	Year	Type	Original Price	Approx. Price Today	Typical Power	Approx. Weight
Raytheon Radarange	1947	Commercial	$2,000–$3,000	$25,000–$40,000	~1,600 watts	~750 lbs
Tappan Wall Oven	1955	Residential built-in	~$1,295	~$14,000	Varies	Heavy built-in unit
Amana Radarange	1967	Residential countertop	~$495	~$4,500	Varies	~50–70 lbs
Modern countertop microwave	2020s	Residential countertop	$50–$200+	Same	700–1,200 watts	20–40 lbs

Step-by-Step: How the First Microwave Worked

Although the first Radarange was much larger than a modern microwave, the basic cooking principle was the same. Here is a step-by-step explanation of how the original microwave oven cooked food.

1. The magnetron generates microwaves. Inside the Radarange, a magnetron tube converted electrical energy into high-frequency electromagnetic waves, specifically microwaves.
2. The waveguide directs the energy. The microwaves traveled through a metal waveguide, which funneled them from the magnetron into the cooking cavity.
3. The metal box reflects the waves. The cooking chamber was made of metal, which reflected the microwaves and kept them contained inside the oven so they could penetrate the food.
4. Water molecules absorb the energy. When the microwaves reached the food, they caused water molecules to vibrate rapidly. This molecular movement created friction and heat.
5. Heat cooks the food. The heat generated by the vibrating molecules cooked the food from the outside inward, much faster than a conventional oven in many cases.
6. Controls manage the power. Early models used timers and power switches to control how long the magnetron operated, though they lacked the sophisticated sensor controls found on modern units.

Because the original Radarange used a powerful magnetron and a large cooking cavity, it could cook certain foods very quickly. However, it also required careful operation, and the water-cooling system meant the machine had to be connected to a water supply, making it impractical for home kitchens at the time.

Cultural Impact of the First Microwave

The introduction of the first microwave oven changed more than just cooking times; it changed how people thought about food preparation. In commercial kitchens, the Radarange allowed restaurants to reheat and cook items faster, improving service during busy periods. Institutions such as hospitals and airlines began exploring microwave heating for large-scale meal service.

When home microwave ovens finally became affordable in the 1970s and 1980s, they contributed to the rise of convenience foods. Frozen dinners, microwave popcorn, and prepackaged meals designed specifically for microwave cooking became grocery store staples. The appliance also influenced kitchen design, as countertops were reorganized to accommodate the new device.

Not everyone welcomed the microwave immediately. Some consumers worried about radiation, despite reassurances that the ovens were safe when used properly. Others believed microwaved food tasted inferior to conventionally cooked food. Over time, as safety standards improved and recipes adapted, these concerns largely faded, though debates about food texture and nutrition continue today.

Tips for Buying a Vintage or Antique Microwave

For collectors and enthusiasts, owning an early microwave or Radarange can be appealing. However, vintage electronic appliances come with safety and practicality concerns. Keep these tips in mind if you are considering a purchase.

• Check for radiation leakage. Old microwaves may have worn door seals or damaged shielding. Use a microwave leakage tester or have the unit inspected by a qualified technician before use.
• Inspect the electrical cord and plug. Appliances from the mid-20th century often have outdated wiring that can pose a fire hazard. Replace frayed cords and ensure the plug matches modern outlets.
• Understand power requirements. Early commercial units may require higher voltage or three-phase power. Verify that your location can support the appliance before buying.
• Research parts availability. Finding replacement magnetrons, waveguides, or timers for a 1940s Radarange can be difficult and expensive. Factor maintenance costs into your decision.
• Consider display versus use. Many vintage microwaves are better suited as display pieces than daily cooking appliances. If you want a working unit, a later 1970s or 1980s countertop model may be more practical.
• Verify authenticity. If you are buying a unit advertised as an original Radarange, request documentation or serial numbers to confirm its age and manufacturer.

Common Mistakes and Misconceptions About the First Microwave

Because the first microwave is a piece of technology history, several misconceptions have developed over time. Here are some of the most common mistakes people make when discussing the original microwave oven.

Mistake 1: Assuming the first microwave was affordable. Many people assume that because microwaves are cheap today, the first one must have been reasonably priced. In reality, the 1947 Radarange cost thousands of dollars, equivalent to a new car or nearly a year’s average salary.

Mistake 2: Confusing the Radarange with modern microwaves. The first microwave was not a countertop appliance. It was a large, commercial, water-cooled machine that stood nearly six feet tall. Calling it a “microwave oven” in the modern sense can be misleading.

Mistake 3: Believing microwaves were invented for home cooking. Microwave cooking was discovered during radar research, and the first ovens were built for restaurants and institutions. Home use came two decades later.

Mistake 4: Thinking microwaves cook from the inside out. Microwaves penetrate food to a certain depth, but they do not cook from the center outward. The exterior layers heat first, and heat then conducts inward, just as in conventional cooking, though the process is often faster.

Mistake 5: Assuming all old microwaves are unsafe. While vintage units should be inspected, an old microwave is not automatically dangerous. Door seals, interlocks, and shielding determine safety, not age alone.

Frequently Asked Questions

How much did the first microwave cost in 1947?

The first commercial microwave oven, the Raytheon Radarange introduced in 1947, sold for approximately $2,000 to $3,000. Adjusted for inflation, that would be roughly $25,000 to $40,000 in today’s dollars, making it a major investment for commercial kitchens rather than a household purchase.

Who invented the first microwave oven?

The microwave oven was developed by Raytheon engineer Percy Spencer after he noticed that radar microwaves melted a chocolate bar in his pocket in 1945. Raytheon patented the technology and released the first commercial Radarange oven in 1947.

What was the first home microwave oven?

The first microwave oven marketed for home use was a built-in wall oven introduced by Tappan in 1955, priced at around $1,295. The first popular countertop model for home kitchens was the Amana Radarange, released in 1967 for about $495.

How big was the first microwave oven?

The original Raytheon Radarange stood nearly six feet tall and weighed approximately 750 pounds. It was far larger than any modern microwave and required commercial installation, including water cooling for the magnetron.

Is the original Radarange still around?

Some original Radarange units survive in museums, private collections, and historical displays. Because they were commercial machines built in limited numbers, they are rare and often treated as collector’s items rather than functioning kitchen appliances.

Are old microwaves safe to use?

Old microwaves can be safe if they are in good condition, but they should be inspected before use. Check the door seal, hinges, and electrical cord for damage. If you are unsure, have a qualified technician test for microwave leakage and verify that the interlock system works properly.

Conclusion

The answer to how much was the first microwave? reveals just how far kitchen technology has come. The original Raytheon Radarange cost roughly $2,000 to $3,000 in 1947, stood nearly six feet tall, weighed hundreds of pounds, and was built for restaurants and institutions rather than home kitchens. Adjusted for inflation, it would cost tens of thousands of dollars today.

Over the following decades, microwave ovens shrank in size, dropped in price, and moved from commercial kitchens to countertops across the world. The introduction of affordable home models in the 1960s and 1970s changed how people cook, reheat, and think about convenience food. Understanding the original price and history of the first microwave helps explain why the appliance became such a transformative part of modern life.

If you are researching vintage appliances, considering a collector’s purchase, or simply curious about the origins of a everyday kitchen tool, the story of the first microwave offers a useful reminder that today’s affordable conveniences often began as expensive, cutting-edge innovations. The microwave oven’s journey from a $3,000 commercial machine to a countertop staple is one of the most significant shifts in home cooking history.