Qmark HBB504
A 500 W liquid-filled baseboard that gives soft, even heat with no plumbing. Expect to pay several times the price of a plain baseboard.
Amazon $347.15$347.15
The Qmark HBB504 is the better baseboard or wall heater overall, rated 2.4 to 2.2. The Qmark HBB504 leads on warranty. The Cadet SoftHeat EBHN750W costs $87.02 less ($260.13 vs $347.15).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Cadet SoftHeat EBHN750W
A gentle, quiet 750 W hydronic baseboard for a bedroom or nursery on 240 V. You pay well over a plain baseboard for the steadier heat.
Amazon $260.13$260.13
Which should you buy?
- Choose the Qmark HBB504 for warranty (1-year warranty, 10-year on the element vs 1-year warranty, 5-year on the element).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every hydronic baseboard baseboard or wall heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Qmark HBB504 | Cadet SoftHeat EBHN750W |
|---|---|---|
| Overall rating | 2.4/5 | 2.2/5 |
| Value 35% | 0 $694.30 per kW ($347.15, 500 W) | 8 $346.84 per kW ($260.13, 750 W) |
| Controls 25% | 20 optional built-in thermostat kit | 20 optional built-in thermostat kit |
| Safety 15% | 75 full-length overheat cutout | 50 overheat cutout not described (neutral score used) |
| Warranty 25% | 40 1-year warranty, 10-year on the element | 18 1-year warranty, 5-year on the element |
Specifications
| Qmark HBB504 | Cadet SoftHeat EBHN750W | |
|---|---|---|
| Heat | ||
| Type | Hydronic baseboard | Hydronic baseboard |
| Rated output | 500 W (375 W on 208 V) | 750 W (563 W on 208 V) |
| Voltage | 240/208 V | 240/208 V |
| Length | 28 in | 47 in |
| Output per foot | 214 W/ft | 191 W/ft |
| Heating element | Nickel-chromium wire immersed in heat-transfer liquid in a copper tube, aluminum fins | Liquid-filled element with self-contained fluid |
| Maker's heating area | 60 sq ft | - |
| Controls | ||
| Thermostat | Optional built-in kit | Optional built-in kit |
| Selectable wattage | No | No |
| Remote or timer | No | No |
| Safety | ||
| Overheat cutout | Automatic reset | - |
| Full-length limit | Yes | - |
| Build | ||
| Weight | 10 lb | 17 lb |
| Warranty | 1 year, element 10 years | 1 year, element 5 years |