20 Best Window Companies in Smithville, MO (2023 Reviews)

Looking to upgrade your home's windows? We've got you covered in this list of the best window installation companies.

We analyzed all the top-rated window companies in Smithville and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated September 15, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

Whether you're updating for style or have damaged windows, windows play a key role in conserving energy in your home. If your windows are made of traditional materials, or are outdated or damaged, you could be sending 25-30% of your home's heat or cool air right out of them.

That's also bad news for the environment because the additional energy required by outdated windows increases your carbon footprint.

We've made a list of the best installation companies to help you in your search, so you can not only take advantage of brand new windows, but also save money on your power bills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Smithville

The EcoWatch team evaluated many window installation companies across Smithville to narrow our list down to the top ones. The installers we've included in this article scored best in our categories, including energy-efficient offerings, availability, customer service, price and more.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Smithville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has become one of the most reputable companies in Smithville.

Window World may be the company for you if you want one that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

There are a wide variety of window types available from Window World, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Smithville?

Window World doesn’t have any pricing information available on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can inquire about a quote on the company’s website.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen has the best availability in Smithville. This company has 27 years of experience in the windows industry, and it has become one of the most reputable companies in Smithville. The provider has a lot of positive reviews from customers online.

Andersen may be the company for you if you want one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

There are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Smithville?

Though pricing is not available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting a free quote on its website is the best way to know for sure.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers the best warranty in Smithville. Universal has over 20 years of experience in the industry, and it currently serves 27 states nationwide. Its reputation is backed by several positive reviews on customer review websites.

If you’re looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the right provider for you.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Universal representative when inquiring about services.

How much does Universal Windows Direct cost in Smithville?

Even though pricing information is not available on Universal’s website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to know for sure is to receive a free quote from the company.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation has the best residential windows in Smithville. This company has 16 years of experience in the windows industry, and it has become one of the most reputable companies in Smithville. The provider has a lot of positive reviews from customers online.

Window Nation may be the company for you if you want one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

There are a wide variety of window types that Window Nation offers, some of which are Energy Star products. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.

How much does Window Nation cost in Smithville?

Though pricing is not available on Window Nation’s website, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. Getting a free quote on its website is the best way to know for sure.

We've recommended installers with good reputations, but bear in mind that some national companies have independently owned locations in Smithville, so your service may depend on your local crew. We have tried to stay unbiased and transparent by describing pros and cons for every company we reviewed.

More Window Companies in Smithville

Renewal by Andersen

Lenexa, KS
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Commercial Windows
  • Service icon Residential Windows
  • Service icon Stained Glass
  • Service icon Custom Window Designs

Website: https://www.renewalbyandersen.com/window-company/734-kansas-city-ks/about-us
Address: 8180 Nieman Rd, Lenexa, KS 66214
Phone: (913) 385-1300

Champion Replacement Windows of Kansas City

Lenexa, KS
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: https://www.championwindow.com/Kansas-City/
Address: 9050 Quivira Rd, Lenexa, KS 66215
Phone: (913) 543-3523

Window World of Lenexa

Lenexa, KS
3.8
★★★★★
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options

Website: https://www.windowskansascity.com/
Address: 9160 Marshall Dr, Lenexa, KS 66215
Phone: (913) 647-0435

Window Nation

Lenexa, KS
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Stained Glass
  • Service icon Energy-Efficient Options

Website: https://www.windownation.com/kansas-city-mo-showroom/
Address: 15325 W 100th Terrace, Lenexa, KS 66219
Phone: (913) 348-2340

AAA Siding and Remodeling LLC

Kansas City, MO
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs

Website: https://www.aaasidingremodeling.com/
Address: 6219 N Oak Trafficway, Kansas City, MO 64118
Phone: (816) 421-5433

Window Replacement Kansas City by Apex Energy Solutions | Energy Efficient Windows | Window Installation Replacement Quote

Kansas City, MO
4.4
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Sliding Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Stained Glass

Website: https://apexenergysolutionskc.business.site/
Address: 1420 NW Vivion Rd Suite 110, Kansas City, MO 64118
Phone: (816) 607-1141

Home Services at The Home Depot

Gladstone, MO
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Stained Glass
  • Service icon Glass Showers
  • Service icon Residential Windows

Website: https://www.homedepot.com/l/Gladstone/MO/Gladstone/64118/3008/services
Address: 4949 NW Old Pike Rd, Gladstone, MO 64118
Phone: (816) 366-7865

American Window and Door

North Kansas City, MO
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Residential Windows

Website: https://awdkcmo.com/
Address: 1700 Iron St, North Kansas City, MO 64116
Phone: (816) 366-7382

Farm & Home Builders Inc

Riverside, MO
3.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Residential Windows

Website: http://www.farm-and-home.com/
Address: 234 NW Plaza Dr, Riverside, MO 64150
Phone: (816) 741-9437

Shinnova Solar by Smart Home Innovations LLC

Kansas City, KS
4.3
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Stained Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows

Website: https://www.shinnovahome.com/
Address: 1136 Adams St, Kansas City, KS 66103
Phone: (913) 339-8641

Fairway Exteriors

Fairway, KS
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Residential Windows

Website: https://fairwayexteriors.com/
Address: 4312 Brookridge Dr, Fairway, KS 66205
Phone: (913) 850-7030

Cornerstone Home Improvements

Kansas City, MO
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://cornerstonewindowskc.com/
Address: 5056 Blue Ridge Blvd, Kansas City, MO 64133
Phone: (816) 737-0601

All-Weather Window, Doors & Siding

Overland Park, KS
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows

Website: https://www.allweatherkc.com/
Address: 7710 Shawnee Mission Pkwy, Overland Park, KS 66202
Phone: (913) 262-4380

Glass Doctor of Kansas City

Mission, KS
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Window Repair
  • Service icon Double-Hung
  • Service icon Glass Showers
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Energy-Efficient Options

Website: https://glassdoctor.com/kansas-city/
Address: 5918 Maple St, Mission, KS 66202
Phone: (816) 822-8855

Glass Doctor of St. Joseph, MO

St Joseph, MO
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Window Repair
  • Service icon Double-Hung
  • Service icon Window Replacement

Website: https://glassdoctor.com/st-joseph/
Address: 3914 Frederick Ave, St Joseph, MO 64506
Phone: (816) 901-9411

Sears Window Replacement

Lenexa, KS
4.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Fast Delivery

Website: https://www.searshomeservices.com/locations/hi/window-replacement/ks/lenexa
Address: 8246 Nieman Rd, Lenexa, KS 66214
Phone: (913) 276-1401

KC Quality Exteriors, LLC

Blue Springs, MO
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Residential Windows

Website: https://www.kcqualityexteriors.com/
Address: 708 NW R D Mize Rd, Blue Springs, MO 64015
Phone: (816) 579-1046

Thermal King Windows

Lenexa, KS
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Sliding Glass
  • Service icon Fast Delivery
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options

Website: https://thermalkingwindows.com/
Address: 14368 W 96th Terrace, Lenexa, KS 66215
Phone: (913) 451-2300

Builder Direct, Llc

Lenexa, KS
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Glass Showers

Website: https://www.builderdirectkc.com/
Address: 9814 Pflumm Rd, Lenexa, KS 66215
Phone: (913) 522-1004

Cardinal Contractors

Kansas City, MO
3.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Window Replacement

Website: https://www.cardinalcontractors.com/
Address: 800 W 101st Terrace #350, Kansas City, MO 64131
Phone: (833) 789-7663
Smithville Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Smithville, MO using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Smithville Saves You Money

Switching to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more details about how switching out your windows could benefit you:

  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
  • Save on power bills: Switching to energy-efficient windows reduces your energy bills by about 12% because you use less energy.
  • More efficient energy usage in your household: Because the winters can get very cold in Smithville, homeowners often rely on their heater a lot. Energy-efficient windows reduce how much heat is lost through your windows, which makes it easier to keep your home warm.
  • Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Updating your windows could help raise the value of your home if you decide to sell.

Estimated Cost of Window Replacement in Smithville

Windows come in varying purposes, styles and shapes, so costs and services will vary considerably depending on your project. Below, we detail the average cost and services that you can get from window installers.

How Much Do New Windows Cost?

Typically, Smithville homeowners can expect their window replacements to range from $250 to $1,200. The most common installations sit at around $600. How much it will cost varies based on several factors, like type, size, material, number of windows, the location of your home and more.

It's also worth noting that energy-efficient windows will cost more upfront, but Energy Star estimates that upgrading the windows on your Smithville home translates to an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. The amount of money you'll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

We recommend requesting free quotes from several window installers to find the one that works best for you.

What Services do Window Installers Offer?

In regard to window installations, in general there are two types that your installer will offer: full-frame and pocket installations.

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has a great amount of rot or deterioration. Full-frame installations require more time and labor and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are simpler and will be less expensive, but you can't do this kind of installment if you have any pre-existing rot or water damage.

If you're unsure which kind of window installation service you need, your installer can advise you. Generally, the choice is influenced by factors such as the age and condition of the home, the type of building material, budget and time restrictions.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Smithville

EcoWatch is different from other reviewers because we evaluate these companies through a sustainability lens. We have assessed the top window installers in Smithville mainly based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy-efficient windows can lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:

Service Area

Because this is a guide for Smithville, we gave more points to companies that provide services to the city. There are certainly reputable providers that didn't make the list because of the low odds that they would serve the average homeowner in Smithville.

Work Quality

When choosing new windows, the quality and variety of services often plays just as important of a role in insulation and performance as the brand you get. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

We analyzed trends in recent online reviews to find the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including quality of installation, quality of parts, warranty, professionalism, cost and more.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we gave higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important. That's why window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Because of Smithville's climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Smithville window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.

Smithville, MO Window Replacement FAQs

What is the typical cost to install new windows?

The average cost of installing a single window ranges between $450 and $650. There are many factors that affect the price, which include how energy-efficient the windows are, local labor costs, your property's location, the number of windows, styles and sizes of windows and the materials used in designing the windows.

What are the most common kinds of replacement windows?

The most common types of windows for homes are slider windows, awning windows, double-hung and single-hung windows, casement windows, transom windows, bay windows and picture windows.

Can you replace your own windows?

Even though you can install your own windows, doing so requires a lot of time and handiness. Using a window installation company can help ensure that the installation is done properly and that you won't have to spend the time and effort to do it yourself.

How do you know it's time to replace your windows?

Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they should probably be replaced. Other than that, if your windows have any damage on them, or they have become difficult to operate, they may be in need of replacement.

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