New carpet or a deep clean,
and how to tell them apart

This page will tell a fair number of readers to go and book a cleaning instead. That is the honest outcome, because the two things being compared do not solve the same problem. Cleaning removes what is on the carpet. Replacement is for what has happened to it. Soil, film, spots and most odors are on it. A lost twist, a backing that has let go and anything that soaked through into the cushion are not. The full list of signals that mean a carpet is genuinely finished is set out on how often carpet should be replaced. What this page adds is the test you run first, on your own floor, to find out which side of that line you are standing on.

Soil comes out. A lost twist never does.

The two problems look identical from standing height and they are nothing alike underneath. Soil sits in and on the pile, dulls the color, and a proper extraction lifts it out. A lost twist is a change in the shape of the fiber itself, and washing it changes nothing at all. A lane that has gone dull and gray can be either one, which is the entire reason people get this decision wrong.

What makes it hard is that both arrive in the same place at the same time. The walkway is where the soil lands and it is also where the load falls, so a carpet that has been abraded is usually a carpet that is also dirty. Cleaning a lane and being disappointed by the result is the slow way to find out which one you had. There is a faster way and it takes five minutes.

The closet test, five minutes on your knees, settles most of this

Find a piece of the same carpet that has never been walked on. Inside a closet, under a bed, behind a door that is always open, in the corner where a dresser has stood since you moved in. That patch is your control, the same carpet on the same day, so it removes every other variable.

Now put your face close to both. In the protected patch the tips should still be defined and the twist should still be visible as a spiral when you look at a single strand from the side. Compare that with a strand from the middle of the lane. If the lane's tips are opened up and fuzzy while the closet's are closed and tight, the yarn itself is gone in that lane and a cleaning will only give you a clean version of the same tired stripe. If both look about the same and the lane is simply darker, you have a soil problem and a cleaner is the right call.

What a cleaning genuinely fixes, and it is more than people expect

A good extraction pulls out the grit that has been cutting the yarn from underneath, so cleaning is not only cosmetic, it is the one act that slows the damage down. It lifts the oily film that makes a room read dingy, takes out most spots, and restores color people had written off as faded. On a carpet whose yarn is intact, the result surprises people most in rooms they had already mentally replaced.

What a cleaning will not do is change the answer the closet test already gave you. If the strands in the lane have opened while the protected ones have not, an extraction gives you a clean lane rather than a restored one. That is worth saying out loud, because a disappointing cleaning is what usually sends somebody to a showroom in a bad mood, deciding under a deadline they did not have to be under.

What the replacement conversation is actually about

When the verdict is replace, the interesting part is not the carpet. Taking the old floor up exposes whatever soaked through, so the subfloor can be treated and sealed before anything new goes down and the new carpet lands on something clean. It is also the moment to talk about a moisture barrier backing, which stops the next accident before it reaches the layers where a smell can live.

Then the cushion, which carries the load and absorbs the impact that would otherwise work a backing loose. Most warranties specify a thickness and density range, and thicker is not automatically better. If the last floor gave out early, that layer is the first place to look, and this time it gets specified against the room rather than inherited from whatever happened to be there.

And the seams, which are decided in your house rather than on paper. Where a seam falls relative to the traffic and the light is the difference between one nobody ever notices and the one thing a guest looks at. The room gets measured with that in mind, along with the transitions into whatever the next room is.

What actually outranks a cleaning, and what does not

The signals that put a carpet past cleaning are specific, and how often carpet should be replaced sets them out in full. Read that list rather than a summary of it, because the difference between a carpet that has failed and one that is merely tired is exactly the kind of thing a summary blurs. Most of it can be checked on your own floor in a few minutes, the same way the closet test can.

What is worth adding here is the other half: the reasons that are perfectly real but that a cleaning was never going to fix. A color you have simply grown tired of is fair grounds on its own and needs no defending. So is a lane worn down the middle of a hall in a house about to go on the market. Those are legitimate reasons to replace. They are just not evidence that the carpet failed, and it helps to know which kind of reason you are acting on before you stand in front of a rack.

Cleaning as a way of choosing your own timing

There is a third position between these two and it is often the smart one. Clean it now, get another season or two out of it, and replace on a schedule you set rather than in the week before a holiday or two days before a house goes on the market. Decisions made under a deadline are the ones people regret, because the sample that was available beat the sample that was right.

It also lets you sequence the room properly. If the walls are getting painted, if a wall is coming out, if a basement is being finished in stages, the carpet should go in last. A cleaning holds the room together while the rest of the work happens, and the new floor arrives once nothing else is going to be dragged across it.

When the answer is neither one

Sometimes the room is simply the wrong room for carpet, and repeating the mistake at a higher standard of cleanliness does not help. An entry that takes wet boots, a laundry, a below-grade landing that has flooded once already: those are hard surface rooms with a washable rug over them.

And sometimes the failure is not the carpet at all. A cushion that was too soft when it went in has been letting the carpet flex on every step for years, which is what worked the backing loose. If the face is still good, the honest conversation is about the layer under it. We would rather have that conversation than sell a floor that fails the same way the last one did.

What we will actually say when we look at it

We will do the closet test with you, push the pile aside in the lane, fold an edge, and ask when the room last smelled like something. If the yarn is intact we will say so, and a cleaning is a better use of your effort than anything we could sell you that week. Saying that loses a sale and keeps a customer, and we would rather have the second one.

If the carpet is genuinely finished, then the in-home measure is where the useful part starts: what is under it, what the cushion should be this time, where the seams have to fall, and which carpet construction suits the way this room is actually used. That is a better conversation to have with a clear reason for replacing than with a vague sense that the floor has had enough.