Snap! Crack! Pop! It's not a bowl full of Rice Krispies, it is your hardwood floors. The company that you bought your wood floors from have promised that they will last up to forty years. So why are there cracks forming in the seams after only a couple years of just having your floors installed?
Do you live somewhere where seasons change dramatically? If you do this may be a reason why there are cracks in your hardwood floors. During the winter, when it is really cold and dry, the wood in your floors will shrink, leaving gaps between the slats. Then, when summer comes and it becomes hot and humid, the wood in your hardwood floors will then expand again.
The cracks that you notice are probably during the winter. The vast amount of heat used during this time of the year causes the moisture in the wood to evaporate. The cracks are absolutely nothing to lose sleep over. Do not panic and call the installer. The less moisture there is, equals reduction in size, which then results in cracks in your flooring.
This does not mean that you should flood your hardwood floors to get rid of the cracks. Too much water on the hardwood floors for too long will make the hardwood floors mold and pop up. There would be no solution except call to call the installer if this happens. In fact, spills on the floor during winter can work their way into the wood easier than when the seams are tight, which is a good reason to close the gaps.
What you can do during the winter months that will get rid of the cracks is to obtain an air humidifier. An air humidifier will restore moisture to your hardwood floor without flooding it. You have the option to do nothing...the problem goes away each year. If you don't mind having cracks during the winter months, then you don't have a problem. During the summer months, the wood will expand back to the way it was before and fill in any of the cracks made during the winter. But without humidifying the house, you run the risk of spills causing more serious damage due to the gaps in the slats.