Hot Water Extraction vs. Encapsulation: Choosing the Right Carpet Cleaning Method

Commercial flooring is a significant investment, no matter what type of facility you manage. Whether it’s your company’s office headquarters or a high-traffic retail space, the condition of your carpets has an impact on your overall business reputation. But while the aesthetics may influence what people think of your attention to cleanliness, there’s another factor to keep in mind: carpet maintenance also has an impact on your indoor air quality, your employee’s health, and how long the carpeting will last.

When it comes to professional carpet cleaning, there are two main techniques: hot water extraction (HWE) and encapsulation cleaning. There isn’t necessarily a best option. Instead, it depends on what fits your needs, budget, and timeline. Here at SourceOne, we use both and will work with you to determine which is right for your facility. Let’s take a basic look at how each method works, their pros and cons, and the ideal uses for each.

 

What is Hot Water Extraction (HWE)?

Hot water extraction, more commonly known as steam cleaning, is what many people think of when they think of deep carpet cleaning. It’s a cleaning process designed to reach the lowest depths of the carpet pile. Dirt, oil, and other debris can work their way down to this level, where even the most powerful vacuums aren’t always able to suck them out.

How Hot Water Extraction Works

While vacuuming may not be able to get all the debris at the base level, it is the first step in hot water extraction. Vacuuming removes any loose soil so that it doesn’t get in the way of the deep cleaning. Next, we apply a special pre-spray treatment that helps loosen up the dirt and debris that has bonded to the carpet fibers.

After the pre-treatment has sat, we use a high-powered machine to inject a pressurized solution made of hot water and a rinsing agent deep into the carpet. Often, this involves running a hose from a truck or other large central unit. At the same time, a high-powered vacuum pulls out the water along with any dissolved dirt, debris, bacteria, allergens, and chemical residue. The result is a carpet that is free of all debris, not just what’s on the upper level.

Advantages of HWE

There are several advantages to HWE:

• It provides the deepest clean possible. No other technique matches what HWE can do. It removes debris and dirt from the deepest level, removing dirt that has stuck to fibers for years.
• The high temperatures used in this method (often as high as 220 degrees Fahrenheit) are high enough to sanitize the area, effectively neutralizing dust mites, allergens, and even bacteria. This can greatly improve your facilities indoor air quality.
• When done correctly, HWE can remove chemical residues that have built up in carpets for years, including residues from other cleaning methods.
• Some carpet manufacturer warranties specify that a hot water extraction cleaning must be done every 12 to 18 months in order to keep the warranty valid.

The Drawbacks of HWE

While HWE has many pros, there are a few cons, too:

• The process does use a large amount of water. While it also vacuums up this water, the carpets still need time to dry. In areas with low humidity and high airflow, this process can take around six hours. In high humidity locations, however, it may require a full 24 hours before anyone can walk on the carpet.
• There is a risk of wicking if too much water is used or if the carpet dries too slowly. Wicking causes stains to actually travel up wet fibers, making them more noticeable as they discolor the upper part of the carpet.
• HWE uses loud machinery and long hoses, which can disrupt your daily operations. Because of this, it typically needs to be done after business hours or over a weekend, especially if you’re in an area that requires longer drying times.

 

What is Encapsulation Cleaning?

Encapsulation cleaning falls under the classification of low-moisture or VLM cleaning. It prioritizes speed, quick turn around times, and uses very efficient chemical solutions to clean carpets.

 

 

How Encapsulation Works

Encapsulation cleaning begins with spraying a special polymer-based solution on the carpet. A machine with a counter-rotating brush or a rotary bonnet is then run over the carpet, which helps push this solution deep into it. Instead of removing dirt with water like HWE does, the polymers actually encapsulate or chemically bond to the debris. As the chemical solution dries, it crystalizes, creating microscopic crystals in the carpet that are incredibly brittle. These crystals contain all of the debris in the carpet and break off when a standard vacuum is used, which is typically the last step in this process.

The Advantages of Encapsulation

There are four main advantages to using encapsulation:

• It uses much less water than HWE, so there is very little drying time. Carpets can typically be used within 30 minutes to an hour.
• There’s no risk of wicking because the carpets are never thoroughly soaked with water.
• It’s much faster and uses less equipment than extraction methods, so technicians can clean large areas very quickly.
• The equipment is typically quieter and requires no hoses, so carpet cleaning can be done during standard business hours without majorly disrupting your employees.

 

The Drawbacks of Encapsulation

Of course, no cleaning method is perfect. There are a few drawbacks to encapsulation:

• While it’s more effective than vacuuming, encapsulation isn’t quite as effective as HWE at getting down into the pile and removing deeply embedded oils and other debris from the very base of the carpet.
• Because high heat isn’t used, encapsulation doesn’t sanitize the carpets. This means it does not kill biological contaminants or allergens.
• If your cleaner uses cheap chemicals that do not fully crystalize, or if the follow-up vacuuming isn’t done, there is the risk of a chemical buildup over time.

 

Which Method is Right for Your Facility?

Selecting the right professional carpet cleaning method depends on a few different factors:

When to use Hot Water Extraction:

• Your facility requires a high level of sanitation. Hospitals, schools, daycare centers, dental offices, clinics, and other facilities where bio-contaminants, viruses, and allergens need to be controlled and eliminated.
• Your carpets are exposed to high amounts of grease and other oils/fluids. Areas like restaurants, hotel lobbies, cafeterias, auto centers, and other spaces require HWE to fully extract these oils and grease from the bottom of the carpet pile.
• If you’ve avoided for skipped carpet cleaning and maintenance for years, using HWE is a good first step to bringing your carpet back to life.

 

When to use Encapsulation Cleaning:

• Your facility operates 24/7 or is unable to shut down long enough to allow the water to dry. Encapsulation cleaning is often used in airports, hotels, emergency call centers, and casinos.
• Your facility is on an upper floor or in an area where running heavy hoses from the truck is logistically difficult.
• You need to maintain the aesthetic appearance of your carpeting in between annual deep cleaning.

 

The Best Approach: Combine Both Methods

While it may seem like an either/or situation, the best facility managers know that using both hot water extraction and encapsulation cleaning is the best way to keep your carpets looking amazing for years. Not only does it get results, this hybrid carpet maintenance program is also cost-effective.

What is the hybrid model blueprint?

• Weekly/bi-weekly vacuuming and spot cleaning when needed.
• Quarterly/bi-monthly encapsulation cleaning in high-traffic areas to maintain the carpet’s visual appeal and prevent regular wear and tear.
• Annually/semi-annually hot water extraction to flush out all trapped debris, sanitize the carpets, and keep the manufacturer warranty valid.

By combining both methods, you will get the most out of your investment in carpeting plus ensure that your flooring looks amazing.

 

SourceOne: Your Experienced Commercial Flooring Partner

Every commercial building has its own unique layout, traffic patterns, and needs. Don’t guess which carpet cleaning method is right for your space—reach out to SourceOne to get a professional evaluation.

We specialize in creating customized carpet cleaning programs designed specifically for your facility. Whether you need encapsulation cleaning or a deep hot water extraction, our team is here for you. If you’re ready to learn more about professional carpet cleaning, reach out to SourceOne today.