There are quite a few people who live in mobile homes; they can be a very cost effective living option. Most mobile homes are bought with mortgages just like any other home. That means that in general they can be refinanced just like any other house. That being said you will have to check with your lender about the specific rules on your mortgage.
In general a mobile home is treated the same as any other house when it comes to refinancing a mortgage. There are a few differences in the specific rules if you do not own the land that the mobile home is on but this usually won't affect your ability to refinance your mortgage. The more important issue is not whether you can refinance a mortgage home it is whether or not it makes sense financially to do it. This is largely going to depend on why you are looking to refinance.
The best reason to refinance a mobile home is to reduce the amount of interest that you have to pay. The most common way to do this is to get a lower interest rate. If you had poor credit when you first got the mortgage and it has since improved you will be able to get a lower rate if you refinance. An even better option is to reduce the length of the mortgage. This will likely raise your monthly payments but it will also significantly reduce the amount that you have to pay in interest over the course of the mortgage. Not a lot of people choose this option because of the higher payments but if you can afford it you should definitely look into it.
Another reason that many people refinance is to reduce the amount that they have to pay each month. It may be possible to do this if you can get a lower interest rate, although unless you can get a significantly lower rate the difference will be minimal. The most common way to lower your interest rate is to extend the duration of the mortgage. This will cost you more over the course of the mortgage but it will make it easier to make your monthly payments.
Another reason that a lot of people refinance their mobile home is to turn the equity into cash. This can be a good way to get money if you need it but you do want to be careful. If you are going to do something that makes sense financially like pay off your credit card debt or pay to attend school it usually makes sense. It rarely makes sense to refinance your home in order to buy something that you want like a new car or a vacation. Remember you are putting your home at risk so you have to make sure that it makes sense financially.