Thermador PRG304GH vs JennAir JGRP430WP Professional Ranges (Reviews/Prices)

Steve Sheinkopf  |  October 31, 2012  |  3 Min. Read

Thermador  |  Jenn-Air  |  Professional Ranges

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Jenn-Air JGRP430WP versus Thermador PRG304GH is a comparison between the industries best selling 30 inch professional ranges. Jenn-Air and Thermador are very similar in many ways. Both were run by dysfunctional companies; Masco (Thermador) and Maytag (Jenn-Air) and were restored by multi-nationals Bosch and Whirlpool. Their aggressive rebate programs are almost the same, except in this one category. Either way, both should be considered when purchasing a professional range.

Jenn-Air JGRP430WP

Jenn-Air was founded by Louis J. Jenn in Indianapolis, Indiana in 1947, later becoming simply Jenn-Air. In the early years, the company focused on manufacturing and marketing of industrial fans for use in a variety of commercial and industrial applications, which inevitably led them to their signature downdraft range. The downdraft allowed consumers to place ranges and/or cooktops in islands and peninsula type kitchens.

Maytag then purchased and produced all appliances for Jenn-Air but unfortunately neglected the brand due to their own internal issues. Whirlpool in 2003 purchased Maytag and invested 300 million in Jenn-Air, specifically in wall ovens and pro cooking (especially this range).

The JGRP430WP is perhaps their strongest piece with two powerful 20,000 BTU burners (average is 15,000), dual convection for evenness of cooking and an advanced clock and timer.

Thermador PRG304GH

Like Jenn-Air, Thermador had plenty of issues as it bounced around owners. In the late 1990s, the German Bosch company purchased Thermador and restored order and better yet, quality. Thermador is one of our least serviced brands at 10.8% serviced within the first year with the average being 18-24%.

Their distinctive competance has always been cooking, especially cooktops, wall ovens and pro ranges. When the recession hit in 2007, Thermador announced their "1, 2, Free" rebate or a free dishwasher program for qualifying cooking and refrigeration purchases. This program led to an increase in Thermador sales and was copied by Jenn-Air among others.

Thermador PRG304GH vs Jenn-Air JGRP430WP

thermador 30 inch pro range PRG304GH


jennair 30 inch pro range JGRP430WP

Thermador PRG304GH


  • Four 15,000 BTU burners
  • Two extra low simmer capability (375 BTU)
  • Patented Star Burners
  • Convection Oven w/ full telescoping racks
  • $ 4,149 (no rebates)
  • No free dishwasher with purchase


Jenn-Air JGRP430WP


  • One 20,000 BTU burner
  • Two 15,000 BTU burners
  • One 5,000 simmer burner (Reduces to 500 BTUs)
  • Dual Fan Multimode True Convection system in the Oven
  • Auto Convection
  • Free dishwasher with purchase (1,249 value)
  • 200 mail in rebate
  • 3,899 before rebate
  • Made in the USA

Which is better? It depends on your cooking style and what you value. Thermador does have a better simmer at 100 degrees (about 375 BTUs) and is more reliable. I like the Star burner with a more even distribution of heat than the regular round burner.

Jenn-Air is a more powerful range with two 20,000 BTU burners. It also has a better, more intuitive clock and timer system as well as dual convection for more even baking (although in a 30 inch the difference is not that great).

The rebate of a free dishwasher qualifies on the Jenn-Air but does not on the Thermador. So now the difference is $1,500 after the free dishwasher...advantage Jenn-Air.

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Additional Resources

Read the Yale Pro Cooking Buyers Guide packed with features, tips, terms and BTU outputs of every pro range on the market. Over 9,000 people have trusted a Yale Guide.


A few review sites have placed this at the bottom of their articles. So here is our take: Our mission is to find reliable products for you to buy. Other review sites may say this as well.

However, we don’t love every product. Quite frankly, it costs us way too much money in repair costs to support less reliable brands.

In fact, we sell fewer brands than most appliance stores. Here is why:

We feel it is our responsibility to repair your appliances after you buy them.

We now have 30 service technicians, each averaging 8-10 calls a day Monday through Friday, plus another 110 on Saturday. That's over 30,000 service calls logged in one year.

The labor rates of fixing an appliance do not come close to the true cost in any product’s warranty period.

That is why no major retailer has a service department. It costs too much labor, money and time.

Our Blog is a bit different than most others you will read. We cannot write glowing reviews of unreliable products.

Hopefully, the bloggers and organizations who write such glowing product reviews for every brand consider servicing these products first. Only then they will understand the consequences of their marketing.

Steve Sheinkopf

My goal has always been simple: I want Yale to be the best retail experience anywhere. I have tried to create a compelling environment for customers and employees alike.

A Note About Pricing

Pricing on this blog is for reference only and may include time sensitive rebates. We make every attempt to provide accurate pricing at time of publishing. Please call the stores for most accurate price.

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