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Description
Espar S3 B5E Hydronic Water Heater - GasolineFast Warm Ups, Clear Windows, and Reliable Engine Pre Heat The Espar Hydronic S3 B5E CS is a compact 5 kW (17,000 BTU) gasoline water heater that delivers rapid cabin comfort and efficient engine pre heating. Paired with the EasyStart Pro controller, it allows precise scheduling and effortless control for daily use. Key Benefits & Applications Engine & Cabin Pre Heat: Circulates heated coolant to warm your engine and HVAC core, reducing cold starts,
Fast Warm-Ups, Clear Windows, and Reliable Engine Pre-Heat
The Espar Hydronic S3 B5E CS is a compact 5 kW (17,000 BTU) gasoline water heater that delivers rapid cabin comfort and efficient engine pre-heating. Paired with the EasyStart Pro controller, it allows precise scheduling and effortless control for daily use.
Key Benefits & Applications
- Engine & Cabin Pre-Heat: Circulates heated coolant to warm your engine and HVAC core, reducing cold starts, engine wear, and improving comfort.
- Rapid Defrost & De-Ice: Quickly clears windshields and windows for safer driving in cold conditions.
- Programmable Comfort: Set schedules easily using the EasyStart Pro timer controller.
- Versatile Use Cases: Ideal for daily drivers, emergency fleets, vans, motorhomes, and boats (supports domestic hot water loops).
- Compact & Flexible: Fits tight engine bays, with separate fuel metering and coolant pumps for easier installation.
Technical Specifications
- Fuel: Gasoline (petrol)
- Voltage: 12 V
- Heat Output: 17,000 BTU (≈ 5 kW)
- Fuel Consumption: 0.06–0.17 gal/h (0.23–0.67 L/h)
- Power Draw: 7–32 W
- Max Operating Altitude: 10,000 ft (3,048 m)
- Warranty: 2 years
- Dimensions (Heater Body): 8.4 × 3.5 × 5.6 in (215 × 91 × 144 mm)
- Weight: 4.4 lb (2 kg)
- Part Numbers: 202008050000 / 202051050000 / 20.2008.05.0000 / 20.2051.05.0000
Vehicle Compatibility
- Passenger cars (from 2.0 L displacement)
- Emergency vehicles and fleets
- Vans, taxis, minivans, and commercial vehicles (incl. tandem setups with air heaters)
- Construction and agricultural machinery
- Motorhomes and boats
Install Kit Includes:
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Easyfix tank connection (Plastic Tank)
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1 x exhaust muffler 24mm
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2 x 26-28mm muffler clamp
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1x Easy Start Pro Dual Timer
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
True to size & color, modest cut, fitted style
Color: Purple, Size: Small
The cut on these tops are perfect. It's a nice v-neck without being revealing. Thick straps and solid back so your bra doesn't show. Sizing is accurate in my case. 5'6" 130lbs chest 34" waist 26" hips 39" and I ordered the small which is fitted on me. I ordered the lavender purple and a black one and both colors are correct in shade. Soft and stretchy material. I air dry them mostly and only gentle low on the dryer if needed and have not had any shrinking.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Great Product
Size: 11.5-12.5 Women/10.5-11.5 Men, Color: Black-w001
This is a great water shoe, lightweight and very functional. Fits true to size. Very comfortable and love the no slip bottom. Well worth the purchase price
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Reviewed in the United States on April 29, 2026
★★★★★ 5
A Diabetic Traveler's Best Friend at the Hot Springs!
Size: 13-14 Women/12-13 Men, Color: Black-w001
I'll be honest — I bought these almost last minute before heading out on vacation to the Hot Springs in Carson City, Nevada. As someone with diabetes, I have to be really careful about my feet, especially on rough or hot concrete surfaces. Pool decks and spa areas can be brutal, and I've had too many close calls just walking around barefoot. I grabbed these water shoes almost as an afterthought, and they ended up being one of the best decisions of the whole trip.
From the moment I slipped them on, I could tell they were going to do the job. They fit true to size — no awkward sizing guesswork — and they hugged my feet snugly without feeling restrictive or causing any pressure points (a big deal for me). The sole gave me just enough protection from the concrete and wet surfaces around the springs, and I never once felt like I was going to slip. That peace of mind alone was worth every penny.
They're lightweight enough that I barely noticed I had them on, and they dried quickly after getting splashed or submerged. No heavy, waterlogged feeling dragging me down. I wore them in and out of the water all day and my feet felt totally fine — no soreness, no irritation, nothing. For someone managing diabetes, that's honestly huge.
I genuinely have zero complaints. These delivered exactly what they promised and then some. Whether you're headed to a hot spring, a beach, a pool, or just doing some light water yoga, these are a solid buy.
Hope this helps!
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Great water socks
Size: 8.5-9.5 Women/7.5-8.5 Men, Color: Shark Blue
Perfect! I’m autistic and this was the last piece of the puzzle for my sensory experience at the pool. They feel like wearing socks with hard soles on and are great for if you need to walk through gravel or anything. They don’t trap water much and the fabric is stretchy and comfortable. I liked the range of colors, I got the one with sharks. I wear a men’s size 8 shoe and I got the same size here, it was the correct size with a little extra room.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Colorful, comfortable, durable water shoes
Size: 8.5-9.5 Women/7.5-8.5 Men, Color: Shark Blue, Size: 8.5-9.5 Women/7.5-8.5 Men, Color: Shark Blue
I have ordered 5 pairs of these water shoes. The quality is amazing the bottom is durable, the stitching feels strong, they are comfortable, slip resistant, fit true to size and look awesome!
We ordered the paisley, the blue geo, galaxy, lightning (lightning was sent back as we received the wrong size) and sharks.
Only reason they are getting a 4 star instead of 5 is because I would much rather have the cushion inside sewn in instead of it being like an insert but that is what I find to be most common with these type of shoes.
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Reviewed in the United States on April 29, 2026