Gas range oven vent -- how much heat expulsion is normal??

We had a new gas range delivered a couple days ago. Aside from the problems we had with the delivery guys (we've totally learned our lesson about ordering online and paying for inside delivery...), we have a huge issue with this range, enough that we're considering returning it -- but we figured we should check first to find out if all new gas ranges are this way now.

The range is 30" slide-in Frigidaire Gallery stainless steel gas + convection. The amount of heat that pours from the oven vent (at the rear of the cooktop) is tremendous. It makes our 14x20 kitchen almost uninhabitable after being on for a few minutes. A teapot full of water placed on the stove grate above the vent will come to a boil at least as fast as if it was heated on one of the burners. We could probably heat our whole house with this thing! Unfortunately, our need is not to heat the house -- it is to be able to be in the kitchen, in front of the range, cooking. Our previous range, a Kitchenaid, approx 8 yrs old, was not at all like this. Heat did come from the vent, but it was not so hot or so much as to make its use prohibitive. Actually, bread dough on a platter sitting above the vent would rise magnificently.

Is this blistering heat normal? Is it normal for this brand but perhaps not for others? We're on a budget, so the $2500+ range is not an option, but we do cook and use the oven almost every day, even more on weekends for things like bread and pizza (that require the oven to be on at a high heat for hours).

Did we pick a loser? Or are all in the under-$2K price range like this? Advice is very welcome!

 

My 20 y/o range does the same thing when the oven is in use...it will keep a pot of soup or sauce boiling when used at anything over 300. You have an outside vented range hood don't you? That's what you will need to use on high when cooking.