A DIY pool heater will make your swimming experience much more enjoyable and will extend the number of months each year that you will be able to enjoy an outdoor pool. Warm pool water also provides therapeutic benefits that can help you relax and ease the pain of arthritis.
Buying a standard pool heater can be expensive but creating a DIY pool heater is low-cost and well worth the effort. These DIY solar pool heaters are also free to use so they will not increase the electric bill.
Check out these 40 DIY solar pool heaters and discover one that is just perfect for your home pool.
1- Above Ground Pool Heater
The price of an above ground pool makes it affordable for most every homeowner. The wide array of sizes also make them adaptable to most backyards. However, unless the above ground pools sits in direct sun all day the water can be remain a little on the chilly side.
That is an easy fix with this DIY pool heater that is designed with above ground pools in mind. A coiled black hose and half a sheet of plywood is the bulk of the items you will need to construct this DIY project. One of these easy to build solar heaters is all you will need for a small pool.
2- Recycled Window Pool Heater
An old double glazed window can be recycled into a new DIY solar pool heater. A black water hose fitted between the two glazed window panels will heat the pool water quickly. The water is continuously running through the hose encased in the double glazed window to keep the warm water flowing into the pool.
The sun does all the work and it costs nothing to have it running all day to keep the pool heated.
Follow this YouTube video to learn how to build a solar pool heater.
3- Polycarbonate Sheet Heater
This YouTube video will show you have to create an efficient DIY solar pool heater using polycarbonate sheeting. The pool water will circulate through the black sheeting to be heated, then returned to the pool.
The constant flow of sun-warmed water will keep your pool at just the right temperature for relaxing after a hard day at work. This homemade solar pool heater will extend the amount of time you will be able to use the pool as the days begin to turn cooler at the end of summer.
A DIY pool heater like this one will also enable you to heat pool water and start enjoying your pool earlier in the spring.
4- DIY Solar Pool Panels
When you’re tired of paying the monthly gas or electric bill for heating your large pool, use this pictorial instruction to build solar panels that will heat your pool for free.
5- Easy DIY Pool Heater
Use these free instructions to build floating swimming pool heaters in less than one hour. Easy to make, easy to use, and very inexpensive.
PVC pipe, pool noodles, black plastic garbage bags and duct tape can be transformed into an effective heater that will warm pool water to a comfortable temperature. Create as many or as few as you need for the size of swimming pool you have, Can be used for in-ground or above ground pools.
Toss them into the pool to float on top of the water and collect heat from the sun. That collected heat on top will transfer to the water below and effectively raise water temperature.
Remove the floating DIY solar panels or leave them in while you swim.
6- Cheap Pool Water Heater
Here’s an idea that will keep your money in your pocket while heating your pool water. For under $100 you can create this easy pool water heater using black hose. You’ll be saving that much in the first few weeks after you build this cheap heater.
7- Black Hoses in the Sun
Everyone knows how hot a black hose gets when exposed to direct sunlight. This plan takes that knowledge, harvests the energy and uses it to create one of the best DIY pool heaters around. Use more black hose for larger pools, less for smaller pools.
8- Recycled Sliding Glass Doors
Use these step-by-step instructions to build a homemade pool heater from recycled sliding glass doors, perfect for an above ground pool. You’re only 12 easy steps away from a warm swim anytime of year.
9- Hula-Hoop DIY Pool Heater
Here’s an ingenious idea for solar pool heating that uses hula-hoops and no electricity. Take a few hula-hoops, attach polyethylene film and then toss them into the pool to catch sun rays and heat the water. These hula-hoop heaters look like lily pads floating on top of the water. Easy to remove when needed.
10- One Hour DIY Pool Heater
If you want to get bust enjoying your pool and slash pool heater costs, here’s the perfect idea for you. Create this simple pool heater in one hour with a black hose and piece of plywood. Easy to follow instructions will get you finished building and in warm water in less than a day.
11- Decorative DIY Pool Heater
Here’s a plan for a pool water heater that ends up looking like part of the landscaping. Easy DIY project that looks as good as it works. Coiled black hoses laid on top of decorative gravel surrounding the pools adds an instant decorative element that softens the look of the gravel.
12- PEX Tubing and Aluminum Fins
Detailed instructions will enable you to build this very efficient DIY pool heater with inexpensive materials. PEX tubing and aluminum fins are used to create a diy solar panel that will heat an in-ground or above ground pool.
13- Out Of Sight DIY Pool Heater
If you prefer your solar pool heater to be out of sight, build it on top of a nearby tool shed with these detailed instructions. Perfect for a small above ground pool, this solar heating system will keep the pool water warm and not take up any valuable landscape space.
14- Corrugated Metal Roofing Pool Heater
A couple of sheets of leftover corrugated metal roofing can be transformed into an efficient solar powered pool heater.
A small solar panel powers a pump that pumps water out of the pool and onto the metal corrugated roofing, The hot metal heats the water as it trickles down through the valleys of the metal. The heated water is returned to pool through a channel located at the lower end of the metal roofing. Easy and inexpensive to build.
15- Black Hose DIY Solar Pool Heater
Black hose gets hot in the sun and can easily heat pool water to a comfortable temperature. Follow these detailed instructions that also contain step by step pictorial instructions, to build your own homemade solar pool heater.
16- Coiled Hose Solar Pool Heater
Solar swimming pool heaters are almost as easy to create as coiling a hose. Most people know how hot water left in a black hose can get when it has laid in the sun for a few hours. Multiply that by several hundred feet of coiled black hose that constantly has water going through in and back into the swimming pool.
The circulating water gets hotter as the sun gets higher in the sky when the DIY solar pool heater coils are placed on a west facing slope in your landscape.
These free detailed plans will show you how to created coiled solar heaters that will heat your pool, no matter what size it is.
17- DIY Roof Pool Heater
Use a nearby roof to hold the homemade solar pool heater. A roof is an ideal place to place all the components to get them up and out of the way, while keeping the panel exposed to direct sunlight for most of the day.
A cabana, pool house, green house, garage or any other structure that is close enough to the pool can hold most of the DIY solar pool heater components on the roof. The circulating hoses is all that will need to come down the building sides and into the pool.
Easy to construct with these detailed instructions, and it’s an efficient and space saving way to heat pool water.
18- PVC Pipe Pool Heater
PVC pipe is so easy to work with, water tight, durable and it’s affordable, making it the ideal material to use for construction of a DIY solar pool heater.
This simple design is easy to create and heats water very efficiently. This design can be customized to heat a hot tub, above ground pool or in-ground pool.
Download these easy to follow instructions and get started build your own PVC pipe pool heater this weekend.
19- Corrugated Sheet Plastic Solar Pool Heater
This material is durable, cost effective, readily available and makes an ideal collector for heat so the temperature of pool water can be raised to a comfortable level.
Heat pool water without raising your energy bill by using corrugated sheet plastic to create a homemade solar pool heater. The channels running lengthwise in the corrugated plastic make the perfect channels for water to run across and become warm before returning into the pool.
Step by step instructions show you how to successfully create this DIY solar pool heater so you can start warming pool water this weekend.
20- Solar Heater Pool Cover
A solar cover for your pool not only warms up the water, but it will also give you an extra two months of pool time each year. The cover heats the water up earlier in the spring so you and your family can enjoy swimming in spring and it will keep the water warmer longer in fall so you can get in one last month of swimming before winter sets in.
No electric usage for this pool cover, and it’s efficient at heating the pool plus keeping debris out of the water. The heater turns on automatically when the sun comes out in the morning and shuts itself off when the sun sets at night. Easy to construct, easy to use.
21- Above Ground Solar Pool Heater
A hose and a circulation pump is about all that’s needed for this DIY project. Bring the temperature of your above ground pool warm several degrees by placing several feet of black hose on a nearby rooftop of sunny hillside and connecting it to a circulation pump in the pool. The water will circulate through the black garden hose to be heated, then returned to the pool. Easy to follow instructions will walk you through the process so you can get this DIY solar pool heater put together and start heating your pool water tomorrow.
22- Black Tubing DIY Pool Heater
Easy to create and use, this DIY solar pool heater will extend the amount of time you can use the pool each year. This solar heater will also work great for an outdoor hot tub or above ground pool.
Easy to place on a nearby rooftop or other out of the way location, so the appearance is not an issue. Exposed black tubing attached to a square of plywood will soak up the sun and heat water as it passes through it.
This simple design is highly efficient and is affordable to construct. This design can be expanded and used to heat water inside the home so the need for a water heater that uses energy can be eliminated.
23- Solar Heater With Diverter
This instructional video will show you how to get the most from your time and money by creating something that does more than one job.
This DIY solar pool heater not only heats the water in the pool, but also helps to heat the home and provide electrical energy for the home.
Use these instructions to learn how to build a solar heater for your pool that has a diverter so the harnessed energy of the sun can be used for different things.
The builder of this model uses the solar power to heat pool water, heat the home through a wood burning stove and for solar energy.
It’s not as complicated as it might sound, it all starts with the basic black hoses coiled and attached to plywood. A simple DIY project that is made easy with these free video instructions.
24- Effective Solar Pool Heater
Heat your in-ground pool with this effective DIY solar pool heater that is easy to build. Less than $300 and just a couple hours of work and you will start raising the water temperature in your pool this afternoon.
The build can done cheaper, but this builder wanted to use eco-friendly black garden hose and those are a little on the pricey side. Use less expensive black hose or tubing and save money while heating your pool water to a relaxing and comfortable temperature.
Two 4 feet by 4 feet homemade solar panels is efficient enough to effectively heat a normal sized in-ground pool. One panel can heat a small pool and three can heat a large pool.
Follow these detailed instruction to build as many DIY solar panels as needed to heat your pool water.
25- Small Solar Pool Heater
A bilge pump and the sun will do all the water pumping and heating so your pool will stay at a comfortably warm temperature. No more cold water that takes your breath away when you jump into a pool heated with a DIY swimming pool heater.
Follow the instructions of this YouTube video to create your own small solar pool heater.
A bilge pump is used on boats to pump water out of the craft as needed. For this DIY project, the bilge pump will pump water out of the pool and into a coiled black hose so the sun can warm the water. The warm water is then returned into the pool so the entire water temperature of the pool water rises.
26- Rooftop Hose Heater
This idea for how to make a solar pool heater could not be easier or cheaper. Any structure that is close to your outdoor pool can be used, along with a black garden hose and pump, to keep pool water at a comfortable temperature.
Use at least a 100-foot black hose and spread it out across the roof so it will be exposed to direct sunshine. Place a submersible water pump in the pool and connect it to one end of the hose so the waster will be sucked into the hose, travel through the solar heated portion of hose on the roof, then back into the pool.
This easy DIY pool heater is a temporary fix so the water can be heated earlier in the spring and kept warmer in the fall to extend your swimming season.
27- Folding Portable Pool Heater
These free detailed instructions make this DIY project easy to build. Written and pictorial instructions will prevent you from making any mistakes while building this pool heater.
This DIY pool heater is foldable and portable making it perfect for storing during the hot summer months when you don’t need warm water to swim in. Use in the spring and fall, then store in the summer and winter when it’s not needed.
28- Solar Heater For Above Ground Pool
Above ground pools are popular and affordable, but a store bought pool heater costs almost as much as the pool does. Save yourself some money and warm that cold pool water with this DIY above ground pool heater that you can build for under $50.
Step by step instructions provides a list of the components needed for this project and written instructions. Everything you need to know to build this solar water heater for your above ground pool.
29- Rooftop Solar Water Heater
Here is a great idea for building a DIY solar pool heater that will heat the pool water without being in the way. A small frame is built and attached to the rooftop to hold everything needed to capture the warm sun rays and heat the water before returning it to the pool.
Save money and swim in warm water almost year-around with this affordable, easy to build solar water heater for your pool.
30- Jacuzzi Solar Heater
A jacuzzi filled with cold water is no fun, the water needs to be hot and bubbly to be enjoyable. This YouTube instructional video will show you how to build an efficient and affordable heater for your jacuzzi so it can be the hot tub it’s meant to be.
Heat the water with solar power to an invigorating 120 degrees F so you can enjoy a therapeutic soak to relieve stress, muscle tension and/or soothe joint pain.
31- Aluminum Can Solar Heater
Aluminum cans can be recycled into a functional and cheap DIY solar pool heater. Soda cans and beer cans can be recycled and reused to heat the water in your pool so you will save money and help reduce aluminum waste.
Follow these free detailed instructions and build this pool heater today so you can enjoy swimming more months out of the year.
32- DIY Lily Pad Pool Heater
This ingenious idea is functional, affordable, and very easy to make. A hula hoop covered with a black plastic trash bag provides a large ‘lily pad’ surface that captures the heat of the sun and transfers it into the pool water.
The lily pads are kept afloat on top of the pool water by sections of foam pool noodles. For less than $5 each, you can build these water warming DIY solar pool heaters.
33- PE Tube Solar Heater
Black pressure equalizing (PE) tubes are typically used in garden irrigation systems, They have thin walls so the water inside warms quickly when the PE tubes are exposed to direct sun. The PE tubes are also inexpensive and easy to work with, making this DIY project easy and affordable.
See the full tutorial at: Instructables.com
34- Large Pool Solar Heater
Large pools cost a lot in electric or propane to heat the water but a DIY solar pool heater will do the heating job for free.
Follow these detailed instructions and build a solar heater for your large pool so you enjoy warm water to swim in for free.
35- Copper Coil Pool Heater
Watch this YouTube video to learn how to create a pool heater with a coil of copper piping. It’s an easy build that will heat any size pool using only solar power.
Copper is an excellent heat conductor and this DIY solar heater will let you enjoy warm swimming water year-round.
36- Improved Solar Pool Heater
Few people enjoy jumping into a pool of cold water but a backyard pool is sometimes difficult to heat. If you keep the pool water warm with electricity it will increase the utility bill a lot. That is why you need a DIY solar pool heater, so you can heat the pool water without increasing the utility bill.
Enjoy a warm swim that will relieve sore, stiff muscles and joints and help you destress for free by using a homemade solar pool heater. This YouTube video will show you how to build an improved solar pool heater that will work for above ground or inground pools.
This solar heater is simple and inexpensive to build and will keep the pool water at just the right temperature for a warm, relaxing swim.
37- Energy Efficient And Cheap
If you are looking for a way to heat the water in your pool that is energy efficient and cheap, then this DIY solar pool heater is just right for you.
A black water hose that is heated by the sun can keep the water in your backyard pool comfortably warm so you can relax in your pool instead of freeze. This YouTube video will show you how to build a simple plywood frame that will keep the black water hose off the ground and build the rest of the components for a DIY pool heater.
As the water from the pool is circulated through the black hose it will be heated by the sun and then returned to the pool. The pool water will stay warm so you enjoy an earlier morning or late night swim without getting chilled.
38- $50 DIY Solar Pool Heater
You can have warm pool water throughout the year for $50 or less with this great idea. By creating a DIY above ground pool heater like this one you will be able to enjoy more time in your pool. Start swimming earlier in the spring and keep the pool open late into the fall by keeping the water heated through solar energy. If you live in a climate that has mild winter weather, you can enjoy swimming in your pool while your neighbors are indoors sitting by the heater trying to stay warm.
Watch this YouTube video for detailed instructions on how to build a DIY solar pool heater for $50 or less. A couple of black hoses, a sheet of plywood, and some clear plastic wrap are the main components for this DIY project. If you have these items on hand, the solar heater will cost even less than $50.
39- Polycarbonate Sheet Solar Heater
Harness the power of the sun to heat your pool with this idea. This YouTube video will provide the instructions for building a DIY solar pool heater using black polycarbonate sheeting.
The thin homemade solar panel heater is easy to build and takes up very little space in the backyard. This detailed YouTube video will show you how to build this efficient solar heater so you can enjoy having warm water in your backyard pool.
The solar energy is free and the warm water will make swimming more enjoyable for your little ones. Having warm water in the pool will also extend your pool season beyond the end of summer and into the fall. The DIY solar pool heater will also warm the water early in the spring so your family can be enjoying time outdoors in the pool before summer begins.
40- Off-Grid Swimming Pool Heater
Ideal design for an off-grid homestead swimming pool. This DIY solar pool heater keeps the pool water warm year-round so the water won’t freeze. Great for swimming or for keeping aquatic animals alive throughout the winter.
An 80-foot-long black water hose placed in the sun is used to recirculate the pool water and keep it nice and warm. An above ground swimming pool in the backyard of an off-grid homestead is used for more than just recreation. The water that is splashed out of the pool while playing provides water for growing vegetation around the pool. The water in the pool is also home to frogs and other aquatic life that help promote healthy plant growth on the homestead.
Follow these free plans and build yourself a cheap, efficient DIY solar pool heater for your homestead pool.