Comfort Zone CZ230ER vs Dura Heat EWH9615

Last updated: November 2, 2026

The Dura Heat EWH9615 and the Comfort Zone CZ230ER are evenly matched, rated 3.5 and 3.5. The Comfort Zone CZ230ER costs $41.37 less ($144.97 vs $186.34).

Comfort Zone CZ230ER vs Dura Heat EWH9615

Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every electric garage heater; a clear win is highlighted. How we rank explains each one.

Factor weightDura Heat EWH9615Comfort Zone CZ230ER
Overall rating3.5/53.5/5
Value 40%83 $5.46 per 1,000 BTU ($186.34, 34,120 BTU/h)81 $5.67 per 1,000 BTU ($144.97, 25,590 BTU/h)
Controls 25%100 thermostat, digital display, remote or app100 thermostat, digital display, remote or app
Warranty 35%0 warranty not published, scored as none0 1-year warranty

Specifications

Dura Heat EWH9615Comfort Zone CZ230ER
Heat
Heat output34,120 BTU/h25,590 BTU/h
Power10,000 W7,500 W
Voltage240 V240 V
Rated garage1,200 sq ft1,250 sq ft
Controls and build
ThermostatYesYes
Digital displayYesYes
Remote or appYesYes
Warranty-1 year
Released2022-05-12-

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