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In that case you could have them write a report to you stating your home isn't safe to live in due to not taking care of this issue with the plumbing. Since most people don't want be worried about safety issues the report could help you make your house less appealing to buyers. It Improves Curb Appeal Did you know that on average, the replacement cost for a heating and cooling system in America exceeds $6000? Inattention to maintaining your heating and air system can result in a higher price for replacement, even though the system is old or not as efficient. The same neglect could also impact the plumbing. When you empty anything out of your washing machines at home and bathtubs, sinks, it must pass through a well-constructed and maintained drain catch basin prior to getting into the sewer main. Maintenance can also include calling for regular cleaning service in case of blockage. The traps are eventually dried out and let water flow in unimpeded. This raises the possibility of back-ups of wastewater, which could cause a very expensive mess: All it takes is an accumulation of debris at the base of a trap to stop flow completely. Perhaps you think "Well, I'll change the system or clear the drain when it's an issue," however that's not an intelligent decision. If you're looking to your pocket to make these repairs make sure you know that any issues related to your heating or plumbing may reduce the value of your property by up to 5%. Also, if you're thinking of buying or selling during winter the possibility of system malfunctions is not only costly repairs to heating and cooling, but also freezing bedrooms and living rooms. Curb appeal is crucial in the eyes of buyers searching for homes -- many prospective buyers don't even bother to look over your home's content at all. Furniture is removed for a closer inspection of the items behind it. Are you certain that future purchasers won't be shocked by the discovery that your bathroom's tiled floor isn't there or hot water isn't going out? .