Heated Seat Cushion vs Infrared Heater – How Much Electricity You Can Save
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<p><strong>Feeling chilly on the patio but want to avoid high electricity bills?</strong> Here we compare the electricity use of a typical infrared heater with a rechargeable heated seat cushion — and the difference is bigger than you might think.</p>
<p>
<a href="https://dynan.se/products/sittdyna-med-varme">See our rechargeable heated seat cushion</a>
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<img src="https://dynan.se/cdn/shop/files/Grythyttan_IMG_8487_1.webp?v=1760102016&width=713" alt="Heated seat cushion on a patio – more energy-efficient than an infrared heater" width="1200" height="675" loading="lazy">
<figcaption>A heated seat cushion warms your body directly — not the air.</figcaption>
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<h2>1. How much electricity does an infrared heater use?</h2>
<p>A common infrared heater has a rated power of <strong>2000 W (2 kW)</strong>. If you run it for five hours, it uses:</p>
<p><em>2 kW × 5 h = 10 kWh</em></p>
<p>At an electricity price of, for example, <em>3 SEK/kWh</em>, the cost is <strong>about 30 SEK</strong> — for a single evening.</p>
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<tr>
<th>Power (W)</th>
<th>Time (h)</th>
<th>Consumption (kWh)</th>
<th>Cost (at 3 SEK/kWh)</th>
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<td>2000</td>
<td>1</td>
<td>2</td>
<td>6 SEK</td>
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<tr>
<td>2000</td>
<td>3</td>
<td>6</td>
<td>18 SEK</td>
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<td>2000</td>
<td>5</td>
<td>10</td>
<td>30 SEK</td>
</tr>
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<img src="https://cdn.shopify.com/s/files/1/0831/2586/2724/files/neon-joi-gg6tyd2-wnM-unsplash_480x480.jpg?v=1724400648" alt="Infrared heater warming the surrounding air" width="1200" height="675" loading="lazy">
<figcaption>Infrared heaters warm the surrounding air — much of that energy is lost outdoors.</figcaption>
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<h2>2. How much electricity does a heated seat cushion use?</h2>
<p>A <strong>rechargeable heated seat cushion</strong> (power bank <em>20,000 mAh = 20 Ah</em> at <em>3.7 V</em>) stores roughly <strong>74 Wh</strong> of energy.</p>
<p>If the battery lasts around 16 hours, the average draw is:</p>
<p><em>74 Wh ÷ 16 h ≈ 4.6 Wh per hour</em> (<strong>0.0046 kWh/h</strong>)</p>
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<thead>
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<th>Product</th>
<th>Power per hour</th>
<th>Energy (Wh/h)</th>
<th>Cost (at 3 SEK/kWh)</th>
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<td>Infrared heater</td>
<td>2000 W</td>
<td>2000</td>
<td>6.00 SEK/h</td>
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<td>Heated seat cushion</td>
<td>≈ 4.6 W</td>
<td>4.6</td>
<td>0.014 SEK/h</td>
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<img src="https://dynan.se/cdn/shop/files/dynan-sittdyna.webp" alt="Rechargeable heated seat cushion – Dynan" width="1200" height="800" loading="lazy">
<figcaption>Dynan — a portable heated seat cushion with up to 15 hours of battery life.</figcaption>
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<h2>3. Real-world warmth</h2>
<p>An infrared heater mainly warms the <em>air</em>, so much of the energy is lost outside. A heated seat cushion warms you <em>directly</em>. You get similar perceived comfort — with <strong>over 99% lower energy use</strong>.</p>
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<p><strong>Result:</strong> A heated seat cushion can be <strong>~99.5% more energy efficient</strong> than an infrared heater for a single person in comparable use.</p>
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<h2>4. When should you choose which?</h2>
<ul>
<li><strong>Warming an entire outdoor room / several people:</strong> Infrared heater.</li>
<li><strong>Keeping yourself warm on the patio, in the boat, at the stadium or when camping:</strong> Heated seat cushion.</li>
<li><strong>Minimising electricity use & cost:</strong> Heated seat cushion.</li>
</ul>
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<p>Want to try it yourself? <a href="https://dynan.se/products/sittdyna-med-varme">Rechargeable heated seat cushion</a></p>
<p>Read more: <a href="https://dynan.se/blogs/blogg/vilken-varmedyna-ska-jag-ha">Which heated cushion should I choose?</a> · <a href="https://dynan.se/blogs/blogg/skillnaden-mellan-en-varmefilt-och-en-varmedyna-vilken-ar-bast-for-dig">Electric blanket vs heated seat cushion</a></p>
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<h3>Sources & assumptions</h3>
<ul>
<li>Example electricity price: 3 SEK/kWh (adjust to your current hourly or average rate).</li>
<li>Infrared heater rating: 2000 W (typical consumer models).</li>
<li>Power bank: 20,000 mAh, 3.7 V ≈ 74 Wh (nominal). Actual runtime varies with weather and heat setting.</li>
</ul>
<p><small>For further reading, see guidance from national energy agencies on electricity use and heating.</small></p>
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<p><strong>Summary:</strong> If you want maximum cosiness with minimum electricity use — choose a heated seat cushion.</p>
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🔋 Up to 15–16 hours of warmth · 🌿 ~99.5% lower energy · 💺 Portable for patio, boat & stands<br>
👉 <a href="https://dynan.se/products/sittdyna-med-varme">See our rechargeable heated seat cushion</a>
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