Skip to main content
  • Protection Guaranteed
  • Made to Measure
  • Precision Custom Fit
  • Any Shape
  • Design Expert Verified

Custom Swamp Cooler Covers - Down Discharge - Round

Price with selected options

Tailored Fit
Tailored Fit
>Easy to Clean
Easy to Clean
Secure Closure
Secure Closure
Breathable
Breathable
Tear Resistant
Tear Resistant
Weatherproof
Weatherproof

Get 20% Off Outdoor Covers with Code: WELCOME20

Why Order from ZIPCovers?

  • We use premium 18oz material—3x heavier than the competition—to ensure superior, long-lasting protection against all weather conditions.
  • Handcrafted by the same experts behind ZIPCushions, bringing the reliability of 1,000+ 5-star reviews to your covers.
  • Our human design experts personally review every single order. If something in your measurements looks a little off, we'll reach out to double-check your size and fit so you get a perfect fit the first time.

Description

Your round down-discharge swamp cooler sits on the roof or a pad and blows air down through a circular base. Without a proper swamp cooler cover, constant weather exposure will let cold drafts through the pad bays, freeze-crack the pump line, and let wind lift loose-fitting covers off the curb. Standard round down-discharge swamp cooler covers often don't provide the coverage they need, resulting in baggy, leaky coverage that does more harm than protection.

Invest in a custom swamp cooler cover to preserve your round down-discharge swamp cooler. A reliable, tailored, all-weather protection that not only promises to protect but actually protects. These waterproof round down-discharge swamp cooler covers are designed with heavy-duty polyvinyl chloride-coated material to keep your investment safe in rain, Sun, snow, sleet, or wind.

Why Choose Our Round Down-Discharge Swamp Cooler Covers?

• Custom-Tailored

Tailored, based on your round down-discharge swamp cooler's dimensions, no sagging, no bunching, just precision-fit coverage. One-size-fits-none, customized based on your given measurements, feels like yours. These are not regular baggy covers; these are made to follow the exact outline of your round down-discharge swamp cooler.

• Breathable Design

Designed with air vents to release trapped air and moisture, leading to enhanced airflow. The free movement of air prevents mold and mildew growth as well, keeping your round down-discharge swamp cooler from deteriorating between uses.

• All Weather Performance

These waterproof round down-discharge swamp cooler covers are designed to perform in all weather conditions, including extreme heat, snow, rain, or wind. The PVC coating protects against harmful UV rays, rain, and snow, so your round down-discharge swamp cooler comes out of the off-season in the same shape it went in.

• Effortless Maintenance with Functional Features

These round down-discharge swamp cooler covers are easy to clean and maintain. Just hand-wash and air-dry completely for the next use. Designed with dual handles to facilitate easy installation and removal. Optional drawstrings for extra wind security on exposed installs.

• Long-term Durability

The heavy-duty round down-discharge swamp cooler covers are backed by a 10-year warranty to ensure peace of mind for you and longevity for your round down-discharge swamp cooler. ZIPCovers is the protective sister brand to ZIPCushions — founded by Maria, trusted by 75,000+ homes, and rated 4.9 out of 5 on Google.

Fabric Information

Custom-designed with heavy-duty 18-ounce 1000 Denier PVC-coated polyester, engineered to endure harsh weather conditions without any cracking or fading. The material is waterproof, UV-stabilized, and weather-resistant to stay put in extreme temperatures.

The smart, ventilated construction promotes airflow to minimize condensation, allowing your round down-discharge swamp cooler to breathe. Ultimately, it prevents any mold and mildew growth. Reinforced seams assure that your round down-discharge swamp cooler stays dry inside. Dual side handles for easing up installation, and optional drawstrings and grommets for extra protection during heavy winds. Super easy to clean, maintain, and store. Hand wash, air dry completely, fold, and store in a moisture-proof container when not in use.

Feature Highlights

  • Custom-made to any size, style, or shape
  • Made with heavy-duty PVC-coated Polyester
  • Weatherproof & UV-resistant
  • Breathable, ventilated design
  • Seamless handling and upkeep
  • Functional & operational design
  • Designed for longevity, 10-year warranty

Why ZIPCovers Is Built Better

Features
ZIPCovers
Competitors
Fabric Weight
18 oz Heavy-Duty PVC Coated Polyester
8–12 oz (varies by product)
Material Strength
3x thicker & more abrasion-resistant
Standard outdoor-grade
Waterproofing
100% Waterproof with sealed coating
Water-resistant (not fully sealed)
UV Protection
Advanced UV inhibitors (fade & crack resistant)
Basic UV treatment
Tear & Rip Resistance
Industrial-grade tensile strength
Moderate durability
Cold-Weather Performance
Flexible in extreme temperatures
Can stiffen/crack over time
Stitching Quality
Double-stitched, reinforced stress points
Single stitching on most products
Customization Accuracy
Human expert review before production
Automated sizing with limited checks
Fit Guarantee
Precision-fit promise (reviewed dimensions)
Size-based fit (tolerance varies)
Warranty
Up to 10-Year Warranty
Up to 5 Years
Designed For
Long-term outdoor & commercial use
Residential/light outdoor use

Frequently Asked Questions

Housing geometry. Round downdraft coolers (Aerocool Trophy, Champion / Essick Air round models, Phoenix round) have a cylindrical housing — circular top, curved continuous side walls, round base sitting on a round curb. Rectangular downdrafts have four flat side panels, a flat top, and a square base. A rectangular cover used on a round housing wrinkles at the corners and never tensions cleanly around the cylinder; a round cover patterns to the diameter and wraps tight on the curved surface. Pick this SKU when your cooler is a cylinder rather than a box.
Yes, for the prep routine, not for the cover itself. Round downdrafts often use one continuous CelDek media pad wrapped around the housing — held in place by retaining clips at top and bottom — rather than separate panel pads. Off-season prep: unclip the wrap, slide the continuous pad off in one piece, rinse with white vinegar to clear mineral deposits, dry fully in the sun, and either reinstall or store separately. The cover patterns over the cylinder either way. Continuous-pad disposal is also faster than four-panel disposal — one piece out, one piece in.
The cover patterns to the cooler housing, not the curb. Round curbs match the cylinder diameter at the base — they're sized so the cooler bolts down to a circular frame with the duct opening centered underneath. The drawstring hem at the cover's base closes around the cooler housing at the bottom of the cylinder, sitting on or just above the curb. Specify curb diameter only if you want the cover to skirt past the curb down to the roof surface; standard pattern terminates at the housing base.
Yes. The Trophy series (Trophy 5500, 6500, 7500) has inlet vents around the top of the cylinder where ambient air pulls in, a side-mounted water line entry, and an electrical disconnect box at the side or rear. The cover patterns to the Trophy silhouette with reinforced sleeve panels at the top inlet ring and a cutout around the water line port. Trophy generation matters — early Trophy 5500 units have a different diameter than current 6500 and 7500 models. Send the specific Trophy model and year for accurate fitting.
Yes — the cylindrical cover surface sheds water naturally because there's no flat top for water to pool on. Rain runs straight down the curved sides; snow load slides off the rounded crown rather than piling up flat. This is a meaningful advantage in snow climates where rectangular downdraft covers can accumulate enough snow load to stress the top panel seams. The drawstring hem at the base seals around the round circumference so wind can't lift the cover from underneath. Round geometry plus drawstring closure is the most weather-tolerant downdraft cover configuration.
Same four steps with two specifics. Drain the water reservoir, manage the pads, drain the water supply line, wipe dry. The pad step is different (continuous wrap vs panel pads — see #3 above). The dry-down step is also different: most round housings have a top-access service panel or removable top cap that opens for full internal access — open it during the dry-down to make sure the blower wheel and reservoir bottom both dry fully before the cover goes on. The cylindrical interior holds residual moisture in a few spots that rectangular interiors don't, so the open-top dry-down matters more.
Yes — all major round downdraft swamp cooler brands are standard production. Aerocool Trophy 5500 / 6500 / 7500 (the dominant round-downdraft line, especially in Arizona and New Mexico residential installs), Champion / Essick Air round models, Phoenix round 4500 / 5500 CFM units, Brisa round downdraft, MasterCool round downdraft (less common than their rectangular line), and Adobe Air round models are all in the pattern library, along with U.S. Cool round commercial units. Send the model number, generation or year, diameter, and total height for accurate fitting.

Customer Reviews

Based on 72 reviews
90%
(65)
8%
(6)
0%
(0)
0%
(0)
1%
(1)
N
Neil

The tie downs at the corners were not long enough to latch together. Otherwise the build quality was very high.

K
Kris H.
Highly recommend!

I ordered a right arm love seat cover, left arm love seat cover and an ottoman cover in the higher end fabric. With a discount code, all 3 were a little over $300. The covers are perfect and the quality of the fabric is…..well, let’s just say it’ll probably outlive me! They’re very heavy duty and totally waterproof. Craftsmanship is excellent.

Customer service was A+. I had questions about measuring and some concerns about shipping. I used the chat option for questions about measurements and it was a REAL person, not a bot. He was friendly and personable. They also contacted me to verify some things about my measurements. When I contacted both sales and customer service via email with a question, they responded within hours. They’re constructed in another country and it took about 6 weeks from order to delivery. The delay was FedEx customs.

Bottom line, they are excellent covers at an extremely fair price that fit perfectly, will last forever and are a very friendly, responsive, competent company to work with.

a
adamslee
Not waterproof

Not waterproof. After getting 1/2” of rain over a few hours the cushions were very wet when the cover was taken off the next day. Not sure how this happened with a “waterproof “ cover. Does not appear to be breathable as they claim. Very disappointed.

C
Carla

If it’s perfectly, it’s great quality, and they were quite timely.

C
Campuscm
Excellent Coverage and Finish

This grill cover has survived several storms without shifting. The material feels premium and still looks flawless after months outdoors.

J
Jen
Holds Up Amazingly in Weather

This grill cover sits perfectly around the edges and feels incredibly durable. Water does not linger on the surface and the handles make it simple to remove. Excellent quality.

C
Carmenlstrange
Easy to Maintain and Clean

These chair covers have done an excellent job resisting dust and pollen. The grommets make securing them simple and the fabric still looks new after months outdoors.

P
Ptevon
Protects Completely in All Seasons

The water repellent surface works exactly as described. The cover tightens neatly with the drawstring and protects the grill from rust and debris. The design feels well planned and very practical.

S
Sicaridesign
Highly Reliable Weatherproof Cover

The grill cover feels heavy duty without being stiff. It stays secure during storms and the color remains rich even under full sun. The order arrived earlier than expected which was a pleasant bonus.

C
Catphinney
Dependable in Rain or Shine

This grill cover arrived quickly and feels extremely well made. The material repels rain effortlessly and the drawstrings keep it steady during strong winds. My grill looks spotless every time I uncover it.