For example, commercial equipment is often bullet-proof and long-lived, but it can be louder than you'd want in a home kitchen. Commercial dish washers have no noise insulation, get hot, but can wash dishes so fast they can crack them from the temperature changes.
Commercial ovens have no or minimal heat insulation, so when you fire them up you can really warm up a room fast, and they have to be installed away from flammable materials.
And people need to be honest about it, too - whenever you buy an appliance new, write the purchase date in indelible ink or spray paint on the back of the unit, because I've had appliances I was sure "lasted barely more than the warranty" and then I realized I'd purchased it 15 years ago.
This seems counter intuitive to me. Why would I not want more insulation in an oven that's going to be used a lot more? Seems like the cost of the insulation would be amortized more quickly than in a home kitchen, since a commercial oven is presumably being used a lot more?
Houses aren't built for that.
See https://deqonline.com/blog/post/7-reasons-not-to-use-a-comme... for some example issues that you might not be aware of if you blindly ran in with "commercial better".
If you fully understand them (you worked as a line cook for awhile, etc) and compensate for them, it might be a fine option.
If you need 500,000 BTU.
Insulation is only effective with intermittent use.
Primarily different regulations. Everyone interacting with a commercial oven is a trained professional getting paid to be there and the space is designed to a certified standard. This means you can focus more on pure performance and less on liability stuff.
And commercial equipment, because it needs to last long, is optimized for maintenance. I imagine insulation makes it harder to access and clean (or fix) the internals of an oven. Not to mention how often you’d have to change the insulation to keep your kitchen up to health standards.
Whereas home dishwashers are designed to run all night slowly recirculating water and removing caked-on grime (with more or less success).
There are at least 7 different simple top freezers at Costco, and at least 3 French door freezers without even water dispensers.
Not sure what else people want, other than to complain.
And without any of those features, it has the most internal space too. All that add-on crap takes up space that could be used for food.
I have 2 of these in my home and after 6 years, there is zero noise, zero complaints. Just have to vacuum behind it every now and then to make sure air flow is happening.