Licensed · Bonded · Insured SC Lic. RBB.23934 & CLM.117984 Family-owned · Greenville County, SC · 864-201-3172
Cummins home standby generator installed beside a house
Thrasher's Heating & Air

Generators & Generator-Ready HVAC

When an ice storm or a summer thunderstorm knocks the power out, your heat pump or AC is usually the hardest thing to run on a generator. We fix that.

Why your AC trips the generator

A compressor pulls a big surge of current for a split second every time it starts. That surge is often several times its running amps, and it's what overloads portable generators, dims the lights and stresses the compressor. A soft starter smooths that surge out.

EasyStart soft starters

We install Micro-Air EasyStart soft starters on central air conditioners and heat pumps. Per the manufacturer, an EasyStart can cut startup current by up to 75%, which can let a properly sized portable generator start a system that would otherwise trip it.

  • Run your AC or heat pump on a generator
  • Quieter starts, no light flicker
  • Less strain on the compressor at every start
  • Works with AC & heat pumps up to 6 tons
Cummins home standby generator installed beside a house
Cummins home standby generator installed beside a house.

Not sure your generator is big enough? Tell us the generator model and your outdoor unit's model number. We'll tell you honestly whether a soft starter will get it running.

Bradley Thrasher wiring a generator transfer switch beside the electric meter
Bradley wiring a generator transfer switch.

Standby generators & transfer switches

We're a licensed electrical contractor (SC license CLM.117984). For whole-home backup, we handle standby generator hookups and transfer switch work so your heating and cooling come back on automatically when the power drops.

Frequently asked

Can I run my heat pump on a portable generator?

Often, yes, with a soft starter and a generator that's sized right. Starting the compressor is the hard part, and a soft starter reduces that surge. We'll check your equipment and give you a straight answer.

Does a soft starter help even without a generator?

Yes. Softer starts mean less light flicker, quieter operation and less mechanical stress on the compressor every time it cycles on.

What size systems does EasyStart work with?

The EasyStart models we install work with air conditioners and heat pumps up to 6 tons.

Service Area

Serving homes & businesses across the Upstate

We're based in Pelzer, in Greenville County, and we work in Simpsonville, Greenville and Mauldin every week. Most of the Upstate is a short drive. Don't see your town? Call. We probably cover it.

25 MILESGreerTravelers RestBeltonHonea PathWare ShoalsLaurensGray CourtPowdersvilleSimpsonvilleGreenvilleMauldinFive ForksFountain InnPiedmontWilliamstonAndersonEasleyPelzer

Based at 727 Garrison Rd, Pelzer, SC 29669. We come to you across the Upstate.

Need heating or cooling help?

Call and you'll usually get Tony on the line, not a call center. We'll tell you plainly what's wrong and what it costs before we start.

Thrasher's tiger mascot giving a thumbs up and holding an air filter
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