Name: Qmark HBB504
Brand: Qmark
Price: 347.15 USD

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.

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Liquid-filled element keeps heating after the thermostat cycles off, so the room stays steadier
Listed for flush wall mounting and for standing on any floor, carpet included
10-year element warranty

Cons

The Qmark HBB family

Every Qmark HBB model we rank, smallest first. Ratings compare each against its own type.

Model	Output	Rating	Price
Qmark HBB504 (this one)	500 W	2.4/5	$347.15
Qmark HBB1254	1,250 W	2.4/5	$539.02

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Heat
Model number	HBB504
Type	Hydronic baseboard
Rated output	500 W (375 W on 208 V)
Voltage	240/208 V
Length	28 in
Output per foot	214 W/ft
Heating element	Nickel-chromium wire immersed in heat-transfer liquid in a copper tube, aluminum fins
Maker's heating area	60 sq ft
Controls
Thermostat	Optional built-in kit
Selectable wattage	No
Remote or timer	No
Safety
Overheat cutout	Automatic reset
Full-length limit	Yes
Build
Weight	10 lb
Warranty	1 year, element 10 years

A 1,250 W liquid-filled baseboard that gives soft, even heat with no plumbing. Expect to pay several times the price of a plain baseboard.

$539.02

1,250 W240/208 VOptional built-in kit

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.

$260.13

750 W240/208 VOptional built-in kit