Comfort Zone CZ220
#9 in ElectricFull review
A low cost hardwired heater for a one car garage or a small shop. It does the job with basic knob controls and a short warranty.
Amazon $96$96
The Comfort Zone CZ220 rates 3.1 among electric garage heaters; the Modine Hot Dawg HD30 rates 2.2 among gas ones. The Comfort Zone CZ220 costs $902.99 less ($96 vs $998.99).
Modine Hot Dawg HD30
#12 in GasFull review
Vented gas heat for a one car garage from a long running commercial heater maker. You pay a lot per BTU at this size.
Amazon $998.99$998.99
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
These two sit in different fuel classes (electric and gas), and each is scored against the reference points for its own class, so a rating says how well each does among its own fuel peers. How we rank explains each factor.
| Factor weight | Comfort Zone CZ220 | Modine Hot Dawg HD30 |
|---|---|---|
| Overall rating | 3.1/5 | 2.2/5 |
| Value 40% | 81 $5.63 per 1,000 BTU ($96, 17,065 BTU/h) | 6 $40.12 per 1,000 BTU ($998.99, 24,900 BTU/h) |
| Controls 25% | 50 thermostat | 40 electronic ignition |
| Warranty 35% | 0 1-year warranty | 25 2-year warranty |
Specifications
| Comfort Zone CZ220 | Modine Hot Dawg HD30 | |
|---|---|---|
| Heat | ||
| Heat output | 17,065 BTU/h | 24,900 BTU/h |
| Power | 5,000 W | - |
| Voltage | 240 V | - |
| Gas | - | Both |
| Efficiency | - | 83% |
| Venting | - | Power vented |
| Controls and build | ||
| Thermostat | Yes | No |
| Digital display | No | - |
| Remote or app | No | No |
| Electronic ignition | - | Yes |
| Warranty | 1 year | 2 years |