Name: House Kobo WZTMF18***
Brand: House Kobo

House Kobo WZTMF18***

Most Efficient (EPA)

18.0 cu ft top freezer. Uses 10% less energy than the federal limit for its class. #292 of 393 top-freezer fridges 18+ cu ft, by yearly cost.

$81 at 18.16¢/kWhper year

$810 at 18.16¢/kWhover 10 years

$145 at 18.16¢/kWh10-yr extra vs. similar size

Your electric rate18.16¢per kWh. Find it on your bill. Default is the U.S. average.

Yearly cost, side by side

This model$81 at 18.16¢/kWh

Typical similar-size model (342 top freezer models)$66 at 18.16¢/kWh

Federal max for this class$88 at 18.16¢/kWh

Thirstiest certified top-freezer fridges$92 at 18.16¢/kWh

Good to know
Fridges run all day, so the EPA test figure is close to real use. A warm kitchen, frequent door opening and an ice maker can push it higher.

Also sold as

Ice maker ready product (with icemaker) , Asterisk * can be replaced by A to Z or 1 to 9 denotes products with features

An asterisk in the model number stands for color or trim codes, so those finishes share these figures.

UPC: 198715714890

The EPA certifies this model number in more than one configuration. This page covers: 3I - Refrigerator-freezer - automatic defrost with op-mounted freezer with automatic icemaker without through-the-door ice. Other: 3 - Refrigerator-freezers - automatic defrost with top-mounted freezer without an automatic ice maker (362 kWh/yr).

Certification history

ENERGY STAR certified 2025-01-10. On the market since 2025-01-01. EPA record 3892695.

Energy and specs

Type	Top Freezer
Product class	3I - Refrigerator-freezer - automatic defrost with op-mounted freezer with automatic icemaker without through-the-door ice
Total capacity	18.0 cu ft
Adjusted volume	21.0 cu ft
Height × width	67 × 33 in
Counter depth	No
Compact	No
Built-in	No
Ice maker	Yes
Through-door dispenser	No
Defrost	Automatic
Connected (smart)	No
Annual energy use	446 kWh
Federal max for its class	487 kWh
Markets	United States, Canada

Source: EPA ENERGY STAR Certified Residential Refrigerators, record 3892695. Most Efficient reflects the EPA field "meets most efficient criteria".

Similar models from other brands

Rule: certified top-freezer fridges within 2 cu ft of this one (16.0 to 20.0 cu ft), other brands only, lowest energy first.

Brand	Model	Size	Energy	Cost
Samsung	RT18DG6300**	17.5 cu ft	333 kWh	$60 at 18.16¢/kWh/yr
Samsung	RT18DG6500**	17.5 cu ft	343 kWh	$62 at 18.16¢/kWh/yr
Samsung	RT70F18LR**	17.5 cu ft	343 kWh	$62 at 18.16¢/kWh/yr
LG	LT18S1100*	17.5 cu ft	344 kWh	$62 at 18.16¢/kWh/yr
LG	LT18S2100*	17.5 cu ft	344 kWh	$62 at 18.16¢/kWh/yr
Element	ERT16CGD*	16.0 cu ft	347 kWh	$63 at 18.16¢/kWh/yr