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SSAC HVAC Timers & Controls
Protect your expensive HVAC equipment with SSAC timers designed specifically for heating, ventilation, air conditioning, and refrigeration applications. From compressor short-cycle protection to fan delay relays, SSAC has the right timer for your HVAC needs.
Search HVAC Timers in Our Inventory
HVAC Timer Applications
⚠️ Compressor Short-Cycle Protection
Critical Application: Prevents compressor damage from rapid on/off cycling. When power is restored after an outage or thermostat satisfied, the timer delays compressor restart to allow pressures to equalize.
Why It Matters: Short-cycling can destroy a compressor in months. A $50 timer protects a $2,000+ compressor.
Recommended: SSAC delay-on-make timers (HRDM, KRDM, TDM series) with 3-5 minute delay
Fan Delay Relays (On & Off Delays)
Delays blower start until heat exchanger is warm. Prevents cold air blow. Use delay-on-make timer.
Keeps blower running after compressor stops to extract residual cooling. Use delay-on-break timer.
Heat Pump Defrost
Timed defrost cycles to remove ice buildup from outdoor coils. Critical for heat pump efficiency in cold climates.
Blower Motor Delay
Sequences blower start/stop with heating or cooling. Improves comfort and efficiency.
Anti-Recycle Timer
Prevents rapid recycling of equipment. Ensures minimum off-time between cycles.
Oil Burner Control
Pre-purge and post-purge timing for oil-fired heating systems.
Popular SSAC HVAC Timers
| Model | Function | Timing Range | Application |
|---|---|---|---|
| HRDM | Delay-On-Make | 0.1 sec - 10 min | Compressor protection, fan-on delay |
| HRDB | Delay-On-Break | 0.1 sec - 10 min | Fan-off delay, run-on timing |
| KRDM | Delay-On-Make | 0.5 sec - 5 min | Compact compressor lockout |
| TDM | Delay-On-Make | Multiple ranges | 8-pin plug-in, easy replacement |
| HRDR | Recycling | Adjustable on/off | Defrost cycling, duty control |
Why SSAC for HVAC?
$50 timer protects $2,000+ compressor
Outlasts the equipment it protects
Standard mounting, clear wiring diagrams
Meets all safety codes
Related SSAC Products
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