--- product_id: 6913191 title: "SW-38 Solar Water Heater Panels" brand: "heliatos" price: "195 zł" currency: PLN in_stock: false reviews_count: 8 url: https://www.desertcart.pl/products/6913191-sw-38-solar-water-heater-panels store_origin: PL region: Poland --- # Compact 24x24 inch Design High Efficiency Solar Heating DIY Friendly Installation SW-38 Solar Water Heater Panels **Brand:** heliatos **Price:** 195 zł **Availability:** ❌ Out of Stock ## Summary > ☀️ Compact power, big savings—heat smarter, live greener! ## Quick Answers - **What is this?** SW-38 Solar Water Heater Panels by heliatos - **How much does it cost?** 195 zł with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/6913191-sw-38-solar-water-heater-panels) ## Best For - heliatos enthusiasts ## Why This Product - Trusted heliatos brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Space-Savvy Design:** Sleek 24x24 inch panels that fit effortlessly into any setup—no bulky equipment needed. - • **Effortless DIY Setup:** Straightforward installation means you’re in control—no expensive contractors required. - • **Harness the Sun’s Power:** Slash energy bills and shrink your carbon footprint with cutting-edge solar heating. - • **Premium Efficiency Rating:** Experience superior heat conversion that keeps your water warm and your wallet happy. - • **Built to Brave the Elements:** Durable monocrystalline silicon and aluminum construction ensures long-lasting performance. ## Overview The Heliatos SW-38 Solar Water Heater Panel is a compact, high-efficiency solar panel measuring 24x24 inches and weighing 12 pounds. Constructed with durable monocrystalline silicon and aluminum, it offers reliable solar water heating with easy DIY installation. Ideal for professionals seeking an eco-friendly, space-conscious solution to reduce energy costs and carbon footprint. ## Description Experience efficient solar water heating with the Heliatos SW-38. This compact, high-efficiency solar panel measures 24 inches by 2 inches by 24 inches and weighs 12 pounds, making it easy to install and maintain. Crafted with durable monocrystalline silicon and aluminum, it's designed to withstand various weather conditions. Review: Not real practical. - Not very efficient, and overpriced. I bought 4 of these panels to heat an 8 gallon tank and provide a radiator to heat the garage. I live in Nevada where the winter temps run in the teens. After I bought the panels, it came with a disclaimer, not to use in freezing weather. I had to drain the panels in the evenings to prevent tube damage. It did heat the tank to 120 degrees in the winter. however, the volume was too small to run the radiator and heat the garage. The tubing that runs through the panel is only 3/8 in. so it doesn't have a high throughput. The panels have held up with much pampering, but I would use a different method if I needed to heat water from the sun in the future. Review: Size Dose Matter - These panels are only 24" X 24" not the size I would expect as it would cost a great deal to get a decent sized system up. May want to look at one of there kits depending where you are. At this size there is little insulation so some type of a drain back system would seem more suitable. twin glazing will almost always help so that is a plus. No efficiency ratting? I will update when I have had it up for a bit. The actual size(24" X 24")and efficiency should be noted on all solar equipment to give every one a fair idea of what they are getting do to the size difference and the way they talked a lot but gave no real info I gave a lower ratting. that being said if all was listed price/equipment I still could not have given over 4 stars.I am updating to 4 stars as the correct info is present now. ## Features - Efficient Heating: Harnesses the power of the sun to heat water, reducing your energy bills and carbon footprint - Compact Design: Fits seamlessly into your space with its 24 inches by 2 inches dimensions - Durable Construction: Built to last with Monocrystalline Silicon and Aluminum materials - Easy Installation: Perfect for DIY enthusiasts with its straightforward installation process - High Efficiency: Boasts superior performance with its High Efficiency rating ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0041VM58E | | Best Sellers Rank | #507,957 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,745 in Solar Panels | | Brand Name | Heliatos | | Connector Type | MC4 | | Customer Reviews | 3.7 3.7 out of 5 stars (17) | | Efficiency | High Efficiency | | Item Dimensions L x W x H | 24"L x 2"W x 24"H | | Item Weight | 12 Pounds | | Manufacturer | Heliatos Solar | | Manufacturer Part Number | 071.0028 | | Material Type | Aluminum | | Model Number | SW-38 | | UPC | 865594000016 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Heliatos - **Efficiency:** High Efficiency - **Item Weight:** 12 Pounds - **Material:** Aluminum - **Product Dimensions:** 24"L x 2"W x 24"H ## Images ![SW-38 Solar Water Heater Panels - Image 1](https://m.media-amazon.com/images/I/91Dqzc4LlYL.jpg) ![SW-38 Solar Water Heater Panels - Image 2](https://m.media-amazon.com/images/I/8164kt3I3KL.jpg) ![SW-38 Solar Water Heater Panels - Image 3](https://m.media-amazon.com/images/I/81z2nvLgW9L.jpg) ## Questions & Answers **Q: Could someone tell me the difference between the SW-38 & the EZ-37 other than price?** A: Hello,The overall size and performance are the same, but they are plumbed differently internally. When you connect them in an array you can connect up to 4 SW-38's in series. If you need more than 4 panels you have to either connect two or more rows of SW-38 (with each row having up to 4 panels only) or you can use the EZ-37 which is designed such that you can connect up to 14 of them in a single row.Thank You,Heliatos Solar **Q: I want to feed cold water to one end from a water pump and have warm water come out the other to a sink. In hot sun would this overheat and blow up?** A: For all solar water heating applications a tank is always required. You are right that without circulation and a tank the water in the panels would overheat. The panels themselves would not blow up because they can withstand very high pressure, but some other part in the system might.Heliatos Solar **Q: I have a studio with pex loops in the slab - I would like to heat enough to prevent hard freeze. Could I connect several of these units directly?** A: Hello,Yes they can be connected in series up to 4 panels with a solar pump. To connect more you would have to split them into two banks (2 rows of 3 for instance). The panels in each row could be connected in series, but the rows would be connected in parallel. If you need to connect more than 4 in series you can use our EZ-37 panels (also available on Amazon) which can be connected in series up to 16 panels.Thank You,Heliatos Solar **Q: would this thermo syphon?** A: Hello,Yes as long as you have the outlet above the inlet. Inside there is a serpentine tube from one port to the other.Thank You,Heliatos Solar ## Customer Reviews ### ⭐⭐⭐ Not real practical. *by D***G on April 14, 2025* Not very efficient, and overpriced. I bought 4 of these panels to heat an 8 gallon tank and provide a radiator to heat the garage. I live in Nevada where the winter temps run in the teens. After I bought the panels, it came with a disclaimer, not to use in freezing weather. I had to drain the panels in the evenings to prevent tube damage. It did heat the tank to 120 degrees in the winter. however, the volume was too small to run the radiator and heat the garage. The tubing that runs through the panel is only 3/8 in. so it doesn't have a high throughput. The panels have held up with much pampering, but I would use a different method if I needed to heat water from the sun in the future. ### ⭐⭐⭐⭐ Size Dose Matter *by P***K on December 19, 2011* These panels are only 24" X 24" not the size I would expect as it would cost a great deal to get a decent sized system up. May want to look at one of there kits depending where you are. At this size there is little insulation so some type of a drain back system would seem more suitable. twin glazing will almost always help so that is a plus. No efficiency ratting? I will update when I have had it up for a bit. The actual size(24" X 24")and efficiency should be noted on all solar equipment to give every one a fair idea of what they are getting do to the size difference and the way they talked a lot but gave no real info I gave a lower ratting. that being said if all was listed price/equipment I still could not have given over 4 stars.I am updating to 4 stars as the correct info is present now. ### ⭐⭐⭐⭐⭐ Off Grid Hot Water *by 1***. on October 15, 2012* Fulfillment as advertised. SW37 appears to be exceptionally well constructed, notably a substantial aluminum frame with heavy duty mounting tabs and brass fittings for the plumbing. Importantly, the HELIATOS web site has connection instructions and a list of required parts. Using their information as a guide, my install incorporated PEX compression fittings and PVC TEES to cut into my RV's existing hot water system. I bought a circulating pump and a 1/2" brass check valve here on Amazon. Word to the wise, use a brass check valve. I broke two PVC check valves before switching to brass. The rest: PVC cutoff valves, a coupler, nipples, 3/8 PEX pipe, and 90 degree PEX compression fittings I found local. To hook up a single SW37 you will also need a couple of brass fittings, 3/8" compression to 3/8" flare. For me, putting it all together was a pain because of the tight space I had to work in. Bottom line: the HELIATOS SW37 Solar Water Heater Panel is a solid product, easy to mount, and easy to connect. On the other side, interface to your existing hot water system requires some homework. ## Frequently Bought Together - SW-38 Solar Water Heater Panels - BougeRV Solar Connectors Y Branch Parallel Adapter Cable Wire Plug Tool Kit for Solar Panel - Renogy 30A 12V/24V PWM Solar Charge Controller with LCD Display Flush Mount Design Negative Ground, Compatible with Sealed, Gel, Flooded and Lithium Batteries, Adventurer 30A,black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/6913191-sw-38-solar-water-heater-panels](https://www.desertcart.pl/products/6913191-sw-38-solar-water-heater-panels) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-10*