Heating and Cooling β FAQ
What size heater do I need for a 2-car garage?
A 2-car garage (400-500 sq ft) requires 4,000-5,000W for electric models or 15,000-18,000 BTU for propane. Insulated garages need 10W per sq ft; uninsulated require 15W. The CTSC 8500W handles larger spaces, while the Dura Heat EUH1465 suits smaller, well-insulated garages.
Should I choose electric or propane?
Electric heaters cost less to operate where electricity is cheap and work cleanly indoors. Propane delivers higher heat output and runs during power outages but requires ventilation. Choose electric for permanent workshop installations and propane for off-grid jobsites or supplemental heating.
What's the difference between 120V and 240V heaters?
120V heaters plug into standard outlets but max out at 1,500W (5,100 BTU), suitable for spaces under 150 sq ft. 240V models like the Comfort Zone CZ220BK deliver 5,000W+ for large workshops but require dedicated circuit installation by an electrician.
Are these heaters safe to run unattended?
Never leave heaters running unattended. All tested models include overheat protection and tip-over switches, but dust, debris, or electrical faults can cause failures. Use programmable timers to pre-warm spaces before arrival rather than continuous operation. Keep combustibles 3 feet away.
Ceiling mount vs portable: which is better?
Ceiling mounts like the Comfort Zone CZ220 save floor space and distribute heat evenly but require permanent installation. Portable units offer flexibility for changing layouts and spot heating. Choose ceiling mounts for dedicated workshops; portables for multi-use garages or rental properties.
How much does it cost to run a workshop heater?
A 5,000W electric heater costs $0.75 per hour at $0.15/kWh. Running 8 hours daily totals $180 monthly. Propane heaters consume 0.5-1.0 gallons per hour at $3/gallon, costing $1.50-3.00 hourly. ECO modes and digital thermostats reduce costs by 20-30% through intelligent cycling.
