Window Cleaning
Crystal-clear results inside and out. Residential and commercial across Central Minnesota.
Family-Owned Since 2003
Eco-friendly window, air duct, and soft washing — serving Sartell and St. Cloud since 2003.
We use whips and negative air — built on the NADCA standard.
When comparing duct cleaning companies, the equipment and process matter as much as the price. Here's what we use and why.
Our equipment connects directly to your ductwork and vacuums at up to 2,000 cubic feet per minute (CFM), pulling the entire system under negative pressure before we agitate anything loose — so debris gets pulled into a sealed container instead of just stirred up.
Because our system pulls that much air, it removes fine particles as well as heavier debris — construction debris, plaster, rodents, and the occasional toy, not just dust.
Many homes have zone-control dampers inside ductwork. Our whips work right through them — zone control isn't an obstacle to getting a section cleaned.
Our whips run under 1 inch in diameter, so we can work through sharp turns and smaller branch runs without getting stuck.
Negative air cleans the trunklines and plenums — the largest, hardest-to-reach parts of your HVAC system, and the parts a lower-cost service is most likely to skip.
We connect the negative air machine to your ductwork or plenum, putting the system under negative pressure. Whips, run off a compressor with a hose attached, dislodge contaminants throughout the system, which are vacuumed into sealed containers. Heavy particles are swept toward the vacuum using air scrubbing tools. We clean the entire HVAC system — and we clean your vent covers too.
"Whips and negative air is the most thorough method we know —
and it's the only one we use."
Limited Time Offer
Fresh deals — new every month, gone when they're gone. Book before the offer ends.
What We Do
From the windows that frame your view to the ducts that breathe life into your home — we handle it all with care and eco-friendly solutions.
Crystal-clear results inside and out. Residential and commercial across Central Minnesota.
Removes dust, allergens, and buildup from your HVAC system for healthier indoor air quality. Learn more →
Low-pressure washing for maintenance-free siding — vinyl, steel, and more — effective without surface damage.
Commercial Services
Window cleaning and light air duct cleaning for offices, restaurants, and retail across Central Minnesota.
Real Results
Windows, air ducts, siding — real jobs, real results. This is what Four Seasons delivers every time.
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Natural Cleaning
Most cleaning companies use harsh chemicals that linger in your air long after the job is done. We take a different approach — our indoor air duct cleaning uses Young Living Thieves Cleaner, a plant-based blend of natural essential oils. For windows and screens, we use an environmentally friendly soap.
It's better for the environment, your kids, your pets, and your family's long-term health. That's what it means to be your natural choice.
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About Four Seasons
Four Seasons was built on one idea: your home deserves to be cleaned the right way — by people who actually care, using products that won't harm your family.
Since 2003, Matt and Carolyn Bertsch have been showing up for Sartell and the greater St. Cloud community — not just as cleaners, but as neighbors. Carolyn served on the St. Cloud Salvation Army advisory board and volunteered at their food shelf every Thursday for years. The team has run food drives for Celebration Lutheran Church in Sartell, collected donations for Promise Neighborhood in St. Cloud, and raised money for Homeless Helping Homeless. Carolyn also started Positive Vibes - Sartell, a Facebook group for good news from around town, and through it the group has served at Place of Hope and Catholic Charities. The photo on the right? United Way Day of Caring — Four Seasons cleaned every window at the Central MN Sexual Assault Center, inside and out, free of charge.
When you call Four Seasons, you're not calling a franchise. You're calling the owners.
Where We Work
Based in Sartell, we serve homes and businesses across the greater St. Cloud area. Not sure if we reach you? Call — we'll give you a straight answer.
Common Questions
We use plant-based solutions built around Young Living Thieves Cleaner — a blend of cinnamon, clove, eucalyptus, rosemary, and lemon essential oils. Everything we bring into your home is safe for children, pets, and the environment. Why we use Thieves Cleaner →
Yes — commercial work is a big part of what we do. We clean windows and light commercial air ducts for offices, restaurants, retail stores, and more across Central Minnesota. We primarily work weekdays during normal business hours. See our commercial services page →
NADCA recommends inspecting every 3–5 years and cleaning as needed. The EPA takes a condition-based approach — they don't endorse a fixed schedule, but recommend cleaning when specific problems are present: mold, vermin, or excessive debris near vents. You may need it sooner if you notice increased dust buildup, musty or stale odors, worsening allergies or asthma symptoms, or rising heating and cooling bills. Other triggers: moving into a home with unknown history, recent remodeling or construction, pets that shed heavily, or visible mold/debris near vents. Homes in Minnesota with forced-air systems running most of the year tend to accumulate debris faster than average. Air exchanger maintenance guide → Wildfire smoke & your filters →
Yes. Four Seasons is fully insured in Minnesota. We carry liability coverage on every job — residential or commercial. If anything unexpected happens on your property, you're protected.
We work primarily in Sartell and the greater St. Cloud area — Sauk Rapids, Waite Park, St. Augusta, and nearby communities. For larger jobs farther out, call us and we'll let you know if we can make it work. (320) 240-7994 Full service area details →
Fill out our quote form → Select your service, enter your address and preferred date, and we'll get back to you with an accurate estimate. You can also call (320) 240-7994 or email 4seasonswindowcleaning@gmail.com — whichever is easiest.
Four Seasons provides transparent quotes with no surprise charges — call (320) 240-7994 for an accurate estimate for your specific home. The price reflects a thorough job done right: professional-grade equipment, the full system cleaned, nothing skipped.
The equipment matters more than most homeowners realize. Our combination of whips and negative air connects directly to your ductwork and puts the entire system under negative pressure using a machine that pulls up to 2,000 CFM, then agitates debris with whips — everything gets vacuumed into sealed containers, and the tools are slim enough to pass zone dampers and reach trunklines and plenums. When you're comparing services, ask whether their equipment connects to the full system and creates negative pressure, or if it's a handheld tool working vent-by-vent — that distinction affects results a lot. NADCA (the National Air Duct Cleaners Association) sets the source-removal standard our process is built around. Full breakdown: Negative Air vs. Rotary Brush →
Window cleaning is often done for cosmetic reasons — but clean windows actually last longer. Hard water from sprinklers, mineral deposits, pollen, and airborne grit sit on the glass and, left long enough, etch into the surface — damage that no amount of later cleaning will remove. Screens and tracks hold moisture against the frame too, which is where seals and sashes start to go. Regular professional cleaning clears that buildup before it becomes permanent.
One of the biggest culprits of window damage is hard minerals from ground water — sprayed onto glass repeatedly by misdirected sprinkler heads or wind-caught watering. Mineral deposits build up and leave a milky, hazy residue that regular cleaning can't touch. At that point, restoration is needed: professional-grade mineral removal, and sometimes paint scraping or sticker and adhesive removal. We handle both — cleaning to maintain, restoration to save.
In most cases, residential windows stay clean for about 3 months. Commercial windows — especially storefronts with heavy foot traffic — may need cleaning monthly or quarterly. That's one reason we work all four seasons, year-round, in any Minnesota weather. Many commercial clients set up a recurring schedule so it's one less thing to think about. Ask about commercial window cleaning →
We clean the whole window — not just the glass. That means panes, frames, screens, sills, and tracks. Every window gets the same attention, whether it's your living room showpiece or the garage window. That said, not everyone wants the full treatment — we're happy to tailor the service to what makes sense for you.
Nope. Rain is pure water — it won't leave deposits on freshly cleaned glass. What dirties windows is airborne debris, pollen, and mineral buildup from sprinklers or hard water, not rain. A clean window after a rainstorm will look just as clear as before.
Vacuum at least weekly — more often if you have pets. Regular vacuuming reduces the friction that wears down carpet fibers and extends the time between professional cleanings. Getting your air ducts cleaned every 3–5 years also makes a real difference: cleaner ducts mean less dust recirculating through the home and settling back onto your floors and furniture.
Ready to Get Started?
Family-owned and serving Central Minnesota since 2003. Call for the fastest response, or fill out a quote form online.
or text usKnowledge Base
Two companies can quote the same house and be describing very different work. Here's how the two duct cleaning methods actually compare.
Read more → Air QualityFogging gets upsold as a disinfection add-on. Here's what's actually in those chemicals and why we don't offer it.
Read more → Natural CleaningWhy your home smells like cinnamon after we leave — and the 600-year-old story behind the plant-based solution we use on every job.
Read more →