It is very rare in the Boston area for a refrigerator to not stay as part of the sale. That said as a buyer's agent I always discuss including an "all appliances and fixtures" with my clients as part of an offer. It's also important to review with my buyer clients what the seller has indicated will specifically be excluded (for example, mirrors, lighting fixtures, flat screen TV's, sometimes washer/dryer, etc). Even if something is excluded, a buyer can still ask for it as part of the deal. However keep in mind if you are in a competitive offer situation (increasingly common), asking the seller to leave things they've already indicated as excluded, can put you at a competitive disadvantage.