Rais cookstove-super efficient?

[EatenByLimestone]

We have a customer who just bought a home. In it are 2 Rais cookstoves. It's a neat look! They had the owners manual on the counter so I checked it out! The claimed efficiency for these stoves is pretty amazing as they dont look new.

 

[SpaceBus]

Those are pretty neat, but I have a feeling even 70% is generous. Even the most efficient modern cook stoves still come in at 75%

Edit: Perhaps I'm mistaken!

 

[SteveKG]

I have a Rais Wittus cookstove. Used to be in our kitchen, now warms the greenhouse some cold nights. Mine is the tall, rectangular model, but the construction is probably similar in quality to the round model there in your post.

I have had it since new sometime around 1990. It was used for all my baking and a lot of other cooking and it kept the kitchen quite toasty. Quality of materials and construction excellent. I purchased an Aga eventually, as we needed more oven space.

The Rais is, I'd say, fairly efficient, though I cannot give you numbers. There are four air controls with which one can fine-tune the burn and etc. Not as efficient as the Aga or our Woodstock cat, but not bad for its time.

 

[begreen]

Rais/Wittus is a premium brand that makes high quality products. Their stoves are noted for innovation and high-efficiency. The Wittus Twin-Fire is one of the most efficient and radiant stoves I had seen in operation. This stove is a model 3 or 4, the rectangular box version was a model 1 or 2 depending on size.

 

[jetsam]

70 isn't a crazy number if you are always burning it hot as directed in the manual. You get some secondary combustion even in stoves with no secondary combustion system when the stove is cranking.