Restroom Calculator

Need an estimate for how many porta potties your event needs? Use this handy calculator! For a more specific quote tailored to your needs, call us today at 800-210-8407!

My event is estimated at attendees, for hours.
  • Will there be more women than men?
  • Will there be alcohol served?

Your Estimated Sanitation Services

Based on what you've told us, we've generated this estimate for your needs.

If you have more details or would like expert advice to make sure you get the best sanitation solution, please call us at 800.210.8407.

Estimated Standard Portable Restrooms Needed: 0
Estimated Hand Wash Stations Needed: 0
Estimated Enhanced Access Restrooms Needed: 0

Looking for a custom quote on those items?


St. Louis, MO Climate and Sanitation Solutions

Portable restrooms at the St. Louis branch

What’s better than finding a quality provider for climate control rentals? Finding a quality provider for climate control AND sanitation rentals! For over 30 years, On Site Companies has been a market leader in both portable sanitation and temporary climate control solutions. With a branch located in St. Louis Missouri, making it the only temporary HVAC and sanitation rental company in St. Louis. On Site Companies is your one stop shop for climate and sanitation for your outdoor events, come snow or rain.

On Site Companies offers a full range of products at the St. Louis, MO location. On Site offers products in both heating and cooling. Whether you have a special event or a job site in need, On Site is your one stop shop for climate and sanitation in the St. Louis area.

On Site offers sanitation rentals, HVAC rentals, and Sanisink sales for your outdoor needs. On Site helps save time and effort. With pick-up and delivery available for all our rentals On Site is your convenient solution for sanitation and climate needs. We offer complimentary products such as ground thaws and blankets.

On Site has knowledgeable representatives to help you figure out what the best solution is for you.

Read more

Supporting Local

Supporting Local - Blog Banner

Associations - On Site Companies

On Site Companies is proud to support and be supported by the local communities and businesses we serve. Community involvement is extremely important to us. We also recognize the importance of helping the development, economy, and integrity of our region.

With this in mind, we are proud to be involved with a number of groundbreaking associations. These associations help local businesses support each other and provide key resources to aid in the development of their companies. We are proud to sponsor some of the amazing events they host for their communities. They also give us a a chance to connect and get together for some fun.

We are proud to be Platinum Members of the Portable Sanitation Association International (PSAI). The PSAI elevates the portable sanitation industry and gives valuable resources as well as recognitions to its members. In particular, On Site Companies’ very own Karen Holm received the 2022 M.Z. Andy Gump Award from the PSAI. This award is presented to an industry leader with high ethical standards and a reputation for leadership and excellence. Moreover, in 2019, On Site technician, Jeremey Johnston won runner-up for Service Technician of the Year.

Listed below are all of the associations we are currently members of, as well as their impact on our communities. If you are local to any of these associations, we definitely recommend joining them!


Minneapolis/St. Paul, MN

As a certified woman-owned business, we are proud to be members of the Association of Women Contractors (AWC) for over 20 years. The AWC empowers woman business owners in the construction industry. The association also provides amazing resources for their members to benefit from. You can catch us at the Annual Golf Fundraiser doing minnow races at our sponsored hole!

The Greater Stillwater Chamber of Commerce is a prestigious association that supports local Greater Stillwater businesses while enriching the community. They host several annual events for the community. For instance, they host the Food Truck Extravaganza, Rivertown Fall Art Festival, and more. We are a proud sponsor of the annual World Snow Sculpting Championship!

As a supplier for special events, it’s a privilege to be part of the Minnesota Festivals and Events Association (MNFEA). The MNFEA connects businesses in the special event industry and gives them great resources to benefit from. You can find us every year at the Annual Conference.

Twin Cities Wedding and Event Professionals (TCWEP) is another amazing resource for event professionals, specifically in the Twin Cities Metro area. We love connecting at the monthly networking events!


Duluth, MN

The Duluth Area Chamber of Commerce has been helping move businesses in the community forward for over 150 years. Specifically, they educate, promote, and grow local companies through networking, advocacy, marketing, and education. They have several signature events such as the Capitol Days, Leadercast, and more. You can catch us at the Annual Golf Outing!

The Moose Lake Chamber of Commerce is a fantastic association that encourages local business promotion, development, and growth. They host annual events for the community such as Ice Bocce, BrewFest, and more. We have proudly committed to annually sponsor Agate Days and the Moose Lake Triathlon.

The Cloquet Area Chamber of Commerce provides training programs, networking events, marketing tools, and more to local businesses in the Cloquet area. They host signature events such as the Christmas Lighting Challenge, Annual Golf Outing, and more. You can catch us at the Home, Business, & Sports Show!


Mankato, MN

Greater Mankato Growth (GMG) is a great association that exists to support and promote the local economic growth of the community and its members. They provide extremely helpful resources for local business and provide an outlet for them to network. They host signature events such as Alive After 5, the Mankato Marathon, and more! We are proudly committing to sponsoring Songs on the Lawn for 2022 and beyond!

The Minnesota River Builders Association (MRBA) is a great resource for local construction businesses in the Mankato region. They provide homeowner resources, contractor education, and networking events for builders, remodelers, subcontractors, suppliers, and homeowners. You can catch us at the sport clay shoots and the golf outings every year.


Rochester, MN

As a sanitation and climate control provider for construction companies, we are proud to be members of the Builders Exchange of Rochester. It is a great way to network with local businesses in the construction industry. It is also a valuable resource for discovering upcoming projects in the Rochester area. We love attending the golf outings and sporting clay shoots!


St. Louis, MO

The Missouri Chapter of the Associated General Contractors of America (AGCMO) represents over 550 Missourian companies in the construction industry. Benefits include educational programs, networking events, representation of common interests in political processes, and more. You can catch us at their frequent seminars, conventions, and meetings.

SITE Improvement Association (SITE) has been aiding construction companies since 1966. SITE represents the best interests of its members in labor union negotiation, political affairs, and legislative agendas. In addition, they provide safety training, education tools, and expos to their members. In fact, you can check out our booth at the Investment in Infrastructure Expo!

The American Subcontractors Association Midwest Council (ASA) aims to help their members become more effective and efficient in business through their resources and connections. For instance, these resources include meetings, workshops, contract reviews, discounts, and government advocacy. One of our personal favorite events is the annual Meet the GC’s Expo!

The Home Builders Association of St. Louis (HBA) has been assisting local home builders and vendors excel in their business since 1934. The HBA uses their resources and connections to provide advocacy, networking, education, and savings to their members. You can catch us at the Builder Day Picnic and Golf Tournament!


Support Local!

At On Site Companies, we are proud to support and be supported by such innovative local businesses. Supporting your local economy helps our communities thrive by retaining jobs, connections, resources, and cash flow. Above all, we recognize the importance of doing our part to help local communities grow and are thrilled to be involved with such resourceful associations that lead the way.

Read more

Heating Company in Duluth – On Site Companies

Now A Heating Company in Duluth - Blog

On Site Companies is officially a heating company in Duluth! In October of 2019 we added a branch based in Cromwell to support communities surrounding a Duluth service area. We are proud that during this transition we have joined the Moose Lake Area Chamber of Commerce, Cloquet Area Chamber or Commerce, and the Duluth Chamber of Commerce to continue our goal of supporting communities and local businesses we serve.

Two years later in November of 2021 our Duluth branch completed its first heater delivery. As we continue to grow our climate control department, On Site is becoming the leading heating company in Duluth. Here are 3 reasons you should choose us for your heating and ground thawing rental needs.


Infrastructure Infrastructure – A Heating Company in Duluth and Beyond

For over 30 years, On Site Companies has been an industry leading temporary heating company. We take pride in being a family-owned and certified women-owned business. Even though we are newly a Duluth heating company, we replicate our proven process for our heating services from our Mankato, Rochester, Twin Cities Metro, and St. Louis branches. This allows us to efficiently provide heater and ground thaw unit rentals for construction projects, special events, homeowners, emergency response, and more!

We constantly upgrade our heat truck fleet. Computerized routing helps keep track of all drivers during their routes and efficiently designate assignments throughout all of our branches. Also, each On Site driver logs in each stop with an iPad. This keeps each completed heating service on record throughout the day. Constant and immediate communication between team members ensures that we are all on the same page.


Inventory Inventory – Heaters and HVAC Staff for Jobs of Any Size

On Site Companies has a wide variety of temporary heaters, ground thaw units, and heating accessories to satisfy any application. Whether you just need to heat up a tent or an entire construction site, we have the rental equipment you need. We take pride in investing in the highest quality heaters on the market. Our inventory is always being expanded to ensure that we can continue serving jobs of any size. Having a large inventory of a wide variety of equipment makes us the ideal heating company to work with.

Our staff is full of industry experts that go above and beyond. Our HVAC technicians are carefully trained and vetted to meet our standards. We have enough trained professionals to support the heating needs for projects of any size.  Combining the wide selection of our deep inventory with the expertise of our climate control staff has made On Site Companies an industry leader in providing heat for over 30 years.


UrgencyUrgency – Temporary Heating Rentals When You Need Them Most

We understand that things don’t always go according to plan. That’s why we take pride in being your reliable source for your urgent heating needs. Minnesota winters are volatile and can sneak up on you if you’re not careful. We’re always ready to serve you during sudden temperature drops because of this. Give us a call right away if you need to heat up or thaw out your site. When disaster strikes, we’ll be here for emergency response.

We understand how important time is during urgent situations. For instance, we understand that you’re losing money for every minute that your job site isn’t heated. If your home or special event isn’t heated, people are at risk of harm. Therefore, we have availability for last minute, overnight, and weekend requests.


3 Uniques That Make On Site Your Top Heating Company

At On Site Companies, we strive to provide the highest quality service of any heating company in Duluth. Our infrastructure, inventory, and sense of urgency allow us to serve our clients expertly and individually for any occasion. We provide the most effective temporary heating solutions, whether it be for a construction project, event, home remodel, or emergency response. Get a free quote or contact us and an On Site representative will promptly assist.

Read more

Fun At Work

Fun At Work Banner

Going to work everyday doesn’t have to be boring or monotonous. If you’re working in a company that cares for its employees, there will usually be fun team building and interactive activities. At On Site Companies, we do our best to keep our employees engaged and happy when they come to work. This is why we have the On Site “Fun Committee”. On Site’s Fun Committee was created with the purpose of boosting employee engagement and morale. Moreover, it works towards encouraging a stress-free, enjoyable, and inclusive environment in the workplace. The Committee is composed of employees from a variety of departments. These include Customer Service, Human Resources, Operations, and Marketing. Everyone in the Committee is free to bring in ideas of ways to make work fun and engaging. Here are the different ways On Site’s kept the fun at work in 2021:


Celebrating A “National Day’ – Bagelfest Day

Bagelfest Day at On Site Companies - Fun at Work

Celebrating a National Day is the perfect excuse to be engaging and festive at work, as well as bring a smile to employees. There is probably a National Day for almost every day of the year, so there are a lot of options to pick and choose! For instance, we celebrated Bagelfest Day and brought in some bagels for everyone at office. Earlier in the year, we also celebrated St. Patrick’s Day with some shamrock shakes, Joe 4 Joe’s with some free coffee for all Joes, and Memorial Day with a cookout. There’s nothing better than coming to work and finding free treats. It’s a good start to your work day!


Celebrating Local Events – State Fair Kickoff

State Fair Kickoff - Fun at Work

Minnesota is pretty famous for its annual State Fair. Due to the variety of food and and fun activities, it’s a “must go” for every Minnesotan. To bring in some of that fun to the office, the Fun Committee prepared some flavored cotton candy and snow cones for On Site team members. Any employee with a sweet tooth sure enjoyed this one! As On Site drivers came back from a had working day, they were surprised with some refreshing snow cones and sweet cotton candy.


Taco Truckin’

Taco Truck at On Site - Fun at Work

Imagine having a normal day at the office and having a food truck show up outside! On Site brought in a Taco Food Truck with free tacos exclusively for On Site employees. The food truck offered a variety of tacos, as well as the option of chips and queso. Thinking outside the box when it comes to these types of activities only shows the effort and care a company has for its employees. Taco ’bout delicious!


Goodie Bags – Employee Appreciation Week!

Goodie Bags for On Site Employees - Fun at Work

We all know that going to work has its good days and it’s, well, not so good days. These last couple of years have been particularly challenging for a lot of businesses. As restrictions have been lifted and events have started to pick up this year, On Site Companies has had one of the busiest summers yet. When work gets hectic, it makes it difficult for team members to participate in social activities. A thoughtful way the Fun Committee showed care and appreciation for employees was by assembling “Goodie Bags” containing snacks and treats. On Site drivers were able to have snacks as they went along their busy work day, and the committee handed over goodie bags to every department in the office. The Committee also shipped Goodie Bags to team members at all of On Site’s branches.


Rise And Shine The Best Way! – Pupusas and Coffee

Pupusas and Coffee at On Site

On Site Companies takes pride in having a diverse team made up of some of the most hard working employees. Members of the Operations Team at On Site have a very early morning daily, and a long work day ahead. We want to make sure employees start their day in the best way possible. Nothing says, “have a nice day!” better than greeting employees in the morning with some Pupusas and fresh hot coffee! Pupusas are a traditional dish from El Salvador that consists of a griddle cake made out of cornmeal. They are usually filled with white cheese, beans, and pork (yum!). It’s safe to say this was definitely a crowd favorite!


Halloween Contest Spooktacular

Costume Contest at On Site

Encouraging employees to participate in Holiday celebrations is a classic way to encourage team building and fun at work. For instance, in an effort to bring in the Halloween spirit at On Site, the Fun Committee organized a Costume Contest as well as a Pumpkin Carving Contest. On the Friday before Halloween, team members joined in on the fun and dressed up in their costume of choice. This activity encouraged communication and collaboration among team members, as some of them did group costumes. Voting for the favorites also encouraged inclusivity for all team members. It was definitely a fun way to end the week at work!


Fun at Work: The On Site Way!

At On Site, we care about our employees’ work experience and well-being. Above all, we believe that acts of kindness and appreciation play a key role in keeping the team happy and comfortable in the workplace. On Site’s team is made up of the most hard working people, so making sure they feel valued and appreciated is our top priority. Interested in joining the On Site Companies team? Check out our careers page for a listing of current available positions, as well as team member spotlights!

Read more

30 Years of On Site Companies

Blog Banner - 30 Years of On Site Companies

This December, On Site Companies is excited to celebrate its 30th anniversary. In the past three decades, On Site has grown from a simple mom and pop business for porta potty rental in Minnesota to a company with more than one hundred employees over five branches and multiple services.

The Early Years

On Site Companies was founded by Dave and Karen Holm in 1989 with truly humble beginnings. It was started with “a truck and a cellphone.” That truck was a used one at that, driven to Minnesota from Ohio. “Dave flew out to get the truck,” says Dave’s daughter, Molly. “He only took a toolbox with him. The truck broke down on the way to Minnesota, so it’s a good thing he had the tools.”

In the early years, Dave was salesman, operations manager, and technician. Dave would take the call, drive the truck, place and service units, and handle all customer service. His wife, Karen, would come home from her fulltime job to do the bookkeeping at night. Dave and Karen’s children, Molly and Russ, were “cheap child labor” in the summers, assembling porta potties. Russ and Molly would also go out in the truck with Dave on calls on days off from school.

Dave worked longed hours in those days, but always had his eye on the future. “I remember when we got our first computer,” reminisces Russ. “We didn’t know exactly what we were going to use it for, but we knew it was going to be important if we wanted to grow.”

Growth Spurt

Growth was always the goal, and growth did come in the early days. It wasn’t long before On Site Sanitation (as it was called then) added its first official employees both in the field and in the office. From there, the growth continued, with more team members to help with routes and deliveries.

30 Years of On Site Companies

The next big landmark came in 1993 with the acquisition of the current headquarters in St. Paul, Minnesota. “It was essentially three people in this big building,” remembers Russ. “Everything was in an enclosed office [on the west end of the building] and everything else was essentially empty. It was projected growth.”

“Our grandfather was instrumental to buying this building,” recalls Molly. Indeed, today there is a plaque commemorating Alan Holm at On Site’s headquarters.

Another milestone in the 90s was the addition of climate control equipment rental to On Site’s services. It came about as a way to continue to grow the business by adding more services that complimented the sanitation side of the business. On Site was now truly more than porta potty rental in Minnesota.

Branching Out

While On Site Companies started in the Twin Cities in Minnesota, they would soon expand, opening branch offices. St. Louis, the oldest of the branches, celebrated its own fifteen year anniversary in 2019.

Beyond St. Louis, On Site Companies now has branches in Rochester and Mankato, Minnesota. And, as of October, 2019, On Site is excited to have expanded its services to the Duluth, Minnesota area. All of On Site’s branches offer the same On Site services and maintain its high standard of professional service, utilizing our efficient routing and technology to make sure what you get at a branch is the same thing you would get at our main office.

Team Of On Site

On Site and The PSAI

On Site has been a long-time member of the Portable Sanitation Association International (PSAI). Karen Holm served as president of the PSAI for two non-consecutive terms. On Site has always endeavored to exemplify the standards of the PSAI. “We want to elevate our industry,” says Molly. The professional standards of On Site mesh perfectly with those of the PSAI and On Site is proud to continue to contribute to the growth of the sanitation industry.

Today and Tomorrow

In early 2019, Dave and Karen Holm’s children, Russ and Molly, officially took ownership of On Site Companies. Both Molly and Russ worked for On Site since the beginning, working their way up in the company. As a teenager, Russ would help on routes and service. When climate control equipment was added, Russ learned how to be a heat technician. Molly too started at “the bottom,” working in the office in various roles. “In my eyes, I’ve always had a stake in On Site,” says Russ. “I’ve always taken ‘ownership.’”

One thing both Russ and Molly want to credit for the success of On Site is the hard work and dedication of all the staff over the past thirty years. “It takes a team,” says Russ. “The way we’ve grown is thanks to others.”

As On Site Companies heads into its next stage of life, we’re excited to continue to grow and keep serving our customers. Here’s to the next thirty years!

Read more

We Are St. Louis

We are St. Louis

In 2019, On Site Companies celebrates its 15th year in St. Louis. Fifteen years go by extremely fast! As a member of the St. Louis community for the past fifteen years, we’ve seen good times and bad and been with you for it all.  Today, St. Louis is the oldest branch in our 30-year-old company, just behind the original head office in St. Paul, MN.

A Brief History of Time

On Site came to St. Louis in 2004 when an opportunity arose with a client to provide temporary climate control services. Russ Holm, son of found Dave Holm and current Vice President of On Site Companies, moved to St. Louis to help set up the office. Russ would spend the next several years in St. Louis helping the branch get off the ground before eventually moving back home, getting married, and eventually leading On Site companies with his sister, Molly.

In 2014, On Site Companies expanded its St. Louis services to include not just temporary heat and cooling but temporary sanitation as well. On Site brought the same reliable and professional service On Site was known for in Minnesota to the St. Louis community.

Today, there are ten team members on On Site: St. Louis. All team members are local St. Louis residents who know the community because they are part of the community.

The Home Town Team

Despite the roots in Minnesota, The St. Louis branch is 100% staffed by a team of local St. Louis residents. (And, even though Russ is back in Minnesota, his visits to St. Louis are like coming to a second home after all his time living there.) Branch manager Ralph Morehouse grew up in South St. Louis, before heading out to be part of the 82nd Airborne in the Army. After his service, Ralph returned to St. Louis and has lived and worked there since.

To see more about the St. Louis team, check out our YouTube channel to see our new Team Spotlights!

St. Louis’s Best Kept Secret

Fifteen years and On Site is just getting started! We can’t wait to show you why we’re St. Louis’s best kept secret. When it comes to temporary sanitation for your special event, construction project, or large event, we have the units you need. We’re also ready to help you with cooling and dehumidification during the summer months and heating during the winter months to keep your projects going.

Call us today at 636-519-0507 to talk to our team of local experts!

Read more

Minnesota River Builder’s Association Annual Golf Tournament

We at On Site Companies were so happy to be able to participate in the Minnesota River Builders Association (MRBA) 22nd annual Legacy Golf Tournament a few weeks ago! The MRBA is a builder’s association out of Mankato, MN and we’re very proud to be a member. On the day of the tournament hosted a hole and had tons of fun playing pong with the association members throughout the day. We had a feeling that it was going to be a beautiful day, so we decided to make a little video highlighting the event! Check it out below. (more…)

Read more

Holiday Food Drive

At On Site, we are always looking for ways to give back to our community. Between donations of portable restrooms, to donating our time to community service programs, we try to help out the projects and neighborhoods surrounding us. Because of this dedication to give back, this holiday season we were so proud to host our first annual food drive! We had set a goal of four boxes of food and $200 in cash to be donated to the Keystone Community Services Food Shelf in St. Paul, MN. Our whole staff pitched in and we are happy to announce that we exceeded our goals! Here is what we ended up collecting. (more…)

Read more

Big Week at On Site

Containment Pan Black

2015 is already looking to be a big year for On Site Companies, and this week has made that fact even more evident. This week marks the culmination of years of planning by On Site, and we are so excited to be celebrating some milestones in our company growth.

Our PC Scale Tower Computer System Goes Live

On Site is so happy to announce our new integrated PC Tower software system. This system allows us to connect our CRM, accounting and dispatch systems into one efficient process. Because of this new software, we will be able to better serve our customers in the future using a more integrated and  digital approach to day-to-day operations. Also, our new drivers are now using tablet technology, which means we will be using significantly less paper in the future. It will also allow our drivers to be able to perform their job duties more efficiently and with better communication to our customers. With this new system, less paper and less fuel will greatly reduce our use of valuable environmental resources. (more…)

Read more

On Site Expanding Portable Restrooms to St. Louis, Missouri

On Site Companies is proud to announce the expansion of our portable sanitation products to the St. Louis, Missouri area. We have served the St. Louis area for many years with our array of portable heating and air conditioning products, which we have greatly enjoyed doing. Because we believe in the area so much, we believe that our portable sanitation services would also be a good fit for the community. (more…)

Read more
Request a quote

Find the right rental for your job site or occasion by exploring available options and prices.

Request Quote