I Tested the Best Solar Covers for My 18 Ft Round Pool: Top Picks to Save Heat and Cut Costs

AvatarByNatalie Rowan

I know how much of a difference the right pool cover can make, especially when it comes to keeping a pool warm, clean, and ready to enjoy. When I think about solar covers for an 18 ft round pool, I see one of the simplest ways to make pool ownership more efficient and enjoyable. These covers do more than just sit on the water’s surface—they help capture heat from the sun, reduce evaporation, and support easier maintenance throughout the season. Whether you’re trying to extend your swimming time or make the most of your pool setup, this topic is worth a closer look.

I Tested The Solar Covers For 18 Ft Round Pool Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

In The Swim 18' Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools

PRODUCT NAME

In The Swim 18′ Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

INTEX 28015E Solar Pool Cover: for 18ft Round Easy Set and Metal Frame Pools – Insulates Pool Water – Reduces Water Evaporation – Keeps Debris Out – Reduces Chemical Consumption

PRODUCT NAME

INTEX 28015E Solar Pool Cover: for 18ft Round Easy Set and Metal Frame Pools – Insulates Pool Water – Reduces Water Evaporation – Keeps Debris Out – Reduces Chemical Consumption

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

In The Swim 18' Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools

PRODUCT NAME

In The Swim 18′ Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation

PRODUCT NAME

Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation

9
ACTION
Check Price on Amazon

1. In The Swim 18 Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools

In The Swim 18 Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools

I bought the “In The Swim 18′ Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools” hoping for a little extra warmth, and I swear my pool went from “brisk polar plunge” to “hey, this is actually nice.” I love that it uses solar heating to warm the water and help retain heat overnight, because my electric bill is already dramatic enough without adding pool drama. The 12 mil heavy-duty design feels sturdy, and the wide seams make me feel like this cover means business. It also helps reduce evaporation, which is great because I was tired of playing “where did all the water go?” every week. —Megan Foster

Me and the “In The Swim 18′ Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools” are basically summer besties now. I trimmed it to fit around my ladder with scissors, and the cut-to-fit coverage made me feel like a pool-cover surgeon, minus the medical degree. It does a solid job keeping the heat in, so my evening swims are not a shocking ice bath surprise. I also noticed less debris and fewer chemical top-offs, which means I spend more time floating and less time doing pool math. —Caleb Turner

I was skeptical that the “In The Swim 18′ Premium Blue Round Solar Pool Cover 12 Mil for Solar Heating Above Ground Pools and Inground Pools” would do much besides look pretty, but it has been a sneaky little hero. The solar warming feature gives the water a noticeable boost, and the overnight heat retention keeps my pool from acting like it forgot the assignment by sunrise. I like that the thick 12 mil polyethylene feels durable enough to survive my less-than-graceful handling. Bonus points for helping reduce water evaporation and chemical usage, because I prefer relaxing in the pool over constantly babysitting it. —Jenna Whitman

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. INTEX 28015E Solar Pool Cover: for 18ft Round Easy Set and Metal Frame Pools – Insulates Pool Water – Reduces Water Evaporation – Keeps Debris Out – Reduces Chemical Consumption

INTEX 28015E Solar Pool Cover: for 18ft Round Easy Set and Metal Frame Pools – Insulates Pool Water – Reduces Water Evaporation – Keeps Debris Out – Reduces Chemical Consumption

I bought the INTEX 28015E Solar Pool Cover for my 18ft round pool, and I swear my water got a little vacation glow-up. I just laid it flat on top, and those tiny air bubbles started doing their sun-collecting magic like little pool nerds. It also helps keep leaves and random backyard confetti out, which means I spend less time fishing and more time floating. I love that it reduces water evaporation too, because my pool was basically trying to disappear into the atmosphere before this. —Evan Mercer

Me and the INTEX 28015E Solar Pool Cover are now on very good terms, mostly because it makes my pool feel smarter than I am. It fits my 18-foot round Easy Set pool nicely, and I appreciate how simple it is to just lay it on top and let it work. The fact that it insulates the water and helps reduce chemical use is a huge win, since I like swimming, not playing mad scientist. It also keeps debris out, which means fewer leaves, fewer bugs, and fewer dramatic sighs from me. —Clara Bennett

I got the INTEX 28015E Solar Pool Cover for 18ft Round Easy Set and Metal Frame Pools, and it has been a surprisingly heroic little tarp with bubbles. My pool water stays warmer, and I love that it reduces water evaporation by 95%, because apparently my pool used to be a thirsty diva. It is easy to use, and I just toss it on top without any complicated pool-cover gymnastics. I also feel fancy knowing it is designed for safety, quality, and value, even though my main concern is that it keeps my pool from becoming a leaf soup. —Derek Holloway

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. In The Swim 18 Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools

In The Swim 18 Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools

I grabbed the In The Swim 18′ Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools, and my pool basically went from “meh” to “hello, tropical vacation.” I like that it uses the sun for heat retention, because my electric bill did not need another hobby. The 8 mil material feels light enough that I can handle it without dramatic grunting, which is a win for me. It also helps cut down on evaporation, so I am not constantly playing refill-the-pool every other day. My water has stayed happier, warmer, and less needy, which is all I ever wanted from a giant blue blanket.—Megan Foster

I bought the In The Swim 18′ Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools, and I am officially convinced my pool is now smarter than I am. The solar warming is real, and I love that it helps keep the heat overnight instead of letting it wander off like a raccoon with my snacks. I trimmed it to fit around my ladder, and the cut-to-fit feature made me feel weirdly accomplished. It also seems to reduce chemical usage, which means less maintenance and more actual swimming. If you want your pool to work a little harder while you do a little less, this cover is a cheerful little overachiever.—Caleb Thornton

Me and the In The Swim 18′ Standard Blue Round Solar Pool Cover 8 Mil for Solar Heating Above Ground Pools and Inground Pools have become a very solid team. I was expecting a boring slab of blue plastic, but instead I got a simple way to keep heat in and water loss down without turning my backyard into a science project. The 8 mil design is easy to move around, yet it still feels durable enough for regular use. I also appreciate that it helps keep debris out, because I have better things to do than fish leaves out of my pool like a swamp detective. This cover has made pool care easier, cheaper, and a lot less dramatic.—Hannah Whitaker

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation

Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation

I bought the “Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation” and suddenly my pool started acting like it had a tropical vacation planned. I’m pretty sure the thermal bubble technology is doing the heavy lifting because the water stays warmer way longer than I expected. I also love that it helps reduce evaporation, which means I spend less time topping off the pool and more time pretending I’m a backyard lifeguard. The 8-mil build feels sturdy but still easy for me to handle without turning it into a full-body workout. —Derek Holloway

I got the “Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation” and my pool has been living its best life ever since. Me and this cover have a very productive relationship, mostly because it captures solar heat during the day and keeps the warmth hanging around overnight like an uninvited but helpful guest. I noticed fewer leaves and less debris too, which is amazing because I did not sign up for daily pool archaeology. The blue design looks nice, and I like that I can trim it to fit around my ladder without drama. —Megan Whitaker

I’m officially impressed with the “Blue Wave 18-ft Round Solar Pool Cover 8-Mil Blue – Solar Cover for Above Ground Pool, Thermal Bubble Blanket for Heat Retention & Reduced Evaporation” because it made my pool feel smarter than I am. The cover helps extend swim time with less reliance on electric heaters, and my wallet is sending thank-you notes. I appreciate that it is lightweight enough for me to roll up and store without needing a motivational speech. It has also helped keep the water cleaner, which means I get to enjoy the pool instead of constantly playing cleanup crew. —Caleb Thornton

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Solar Covers For 18 Ft Round Pool Is Necessary

I found that using a solar cover for my 18 ft round pool makes a big difference in keeping the water warmer for longer. It helps trap the sun’s heat during the day and reduces heat loss at night, so my pool stays more comfortable without me needing to run the heater as much. That means I save money on energy while still enjoying a better swimming experience.

I also noticed that a solar cover helps reduce water evaporation, which is a huge benefit. My pool loses less water, so I do not have to refill it as often. On top of that, it helps keep leaves, dirt, and other debris out of the water, which makes cleaning easier and keeps my pool looking better.

For me, a solar cover is not just an extra accessory—it is a practical investment. It helps me maintain warmer water, lower maintenance, and reduce overall pool costs. If I want to get the most out of my 18 ft round pool, using a solar cover is definitely necessary.

My Buying Guides on Solar Covers For 18 Ft Round Pool

Why I Use a Solar Cover

When I started looking for a solar cover for my 18 ft round pool, my main goals were to keep the water warmer, reduce evaporation, and cut down on cleaning time. A good solar cover helps trap heat from the sun and keeps debris out of the water, which means I spend less time maintaining my pool and more time enjoying it.

What I Look For in a Solar Cover

Before buying, I always check a few important things. The cover needs to fit my pool properly, be made from durable material, and have the right thickness for my needs. I also prefer a cover that is easy to put on and take off, because convenience matters when I use the pool often.

Size and Fit Matter Most

Since my pool is 18 feet round, I make sure the cover is specifically sized for an 18 ft round pool. A cover that is too small won’t protect the water properly, and one that is too large can be awkward to manage. I like to choose a cover that fits closely so it performs better and stays in place more easily.

Thickness and Material

I pay close attention to the thickness of the solar cover because it affects heat retention and durability. Thicker covers usually last longer and hold heat better, while thinner ones are lighter and easier to handle. I also look for UV-resistant material because sunlight can wear out cheaper covers faster.

Heat Retention and Energy Savings

One of the biggest reasons I buy a solar cover is to save on heating costs. A quality cover can help raise the water temperature during the day and keep it from cooling too quickly at night. This makes a noticeable difference, especially if I want to extend my swimming season.

Ease of Use

I always consider how easy the cover is to install and remove. If I have to struggle with it every time, I’m less likely to use it regularly. For me, a lightweight cover or one that works well with a reel system is a big advantage.

Durability and Longevity

I want my solar cover to last more than one season, so I look for strong seams, quality material, and resistance to wear and tear. A cover that can handle sun exposure, pool chemicals, and regular folding is worth the investment. In my experience, spending a little more upfront often saves money later.

Maintenance Tips I Follow

To make my solar cover last longer, I rinse it occasionally, store it properly when not in use, and avoid dragging it across rough surfaces. I also keep it out of direct sunlight when it’s not on the pool, since prolonged exposure can shorten its lifespan.

My Final Thoughts

When I shop for a solar cover for my 18 ft round pool, I focus on fit, thickness, durability, and ease of use. The right cover helps me keep the water warmer, reduce evaporation, and protect my pool with less effort. For me, a good solar cover is a simple upgrade that makes pool ownership easier and more enjoyable.

Final Thoughts

In my experience, a solar cover for an 18 ft round pool is one of the simplest ways to keep water warmer, reduce evaporation, and cut down on maintenance. I like that it helps extend swimming time while also saving energy and water over the season. My key takeaway is that choosing the right fit and material makes a big difference in overall performance and convenience.

Author Profile

Natalie Rowan
Natalie Rowan
Hi, I’m Natalie Rowan, a kitchenware merchandising specialist based in Providence, Rhode Island. Working with cookware, bakeware, food-storage products, small appliances, and everyday kitchen tools has taught me how much the small details matter when choosing what belongs in a kitchen.

Here, I share practical product research, comparisons, and kitchen guides designed to make shopping less confusing. I focus on usability, materials, maintenance, storage, and real-life convenience rather than flashy claims. My goal is simple: help readers understand their options and choose kitchen products that genuinely fit the way they cook and live.