Your heat pump is the only thing in the house that heats it in January and cools it in July, and a heat pump tune up is us going over that machine from one end to the other. Coils get cleaned first. After that the tech is testing electrical parts, reading the refrigerant, watching the defrost and the backup heat come on, and making sure each control answers when it’s called. The point of all that is pretty simple, honestly: find the small problems early, so your heat pump runs efficiently and doesn’t quit on you the coldest night of the year.
A furnace gets to sit around doing nothing half the year, but your heat pump never really gets a break, since it’s running through the summer and the winter both. That’s a big reason we’re so stubborn about regular tune ups here in Georgia, where heat pumps carry the house through hot, sticky summers and winters that seem to get less predictable every year. And this year the forecasters are expecting a Super El Niño, which means sharp cold snaps and a higher chance of ice storms, so every heat pump in the region is in for some extra stress.
If you’re on the fence about putting a heat pump tune up on the fall calendar, these numbers might help:
- Close to half of new homes now heat with a heat pump. Back in 2000 it was 23% of new single-family homes, and by 2024 it had climbed to 47% using a heat pump as their primary heat, going by the Census data the National Association of Home Builders put together.
- Your heat pump covers most of your energy use. The U.S. Energy Information Administration puts space heating and air conditioning at 52% of a typical household’s annual energy use, and in your house, one machine is handling both of those.
- The backup heat is where the money goes. When it gets cold, most heat pumps lean on electric resistance backup heat, which the EIA says works well and is also relatively expensive to run, and that’s how a heat pump that can’t carry its own load ends up raising your bill without ever looking broken.
So let’s get into what’s actually on our heat pump tune up checklist, why we bother with each item, and when to book it.
What a heat pump tune up really is
Think of a heat pump tune up as preventive maintenance, done while the system still works, so it keeps working. It isn’t somebody glancing at the outdoor unit on the way to the truck. A real visit goes through both halves of the system, the outdoor unit and the indoor air handler, along with the controls that tie the two together.
Why heat pumps need care twice a year
Your gas furnace only works in the winter, and an air conditioner only works in the summer. A heat pump does both jobs, so it piles up a lot more hours every year, and its parts wear out faster than either of those would by themselves.
That’s why most manufacturers, and most techs we know, recommend two tune ups a year. In the fall the heat pump tune up gets the heating side ready, and we focus on the defrost controls, the backup heat and the reversing valve, while the spring visit gets the cooling side ready for a long Georgia summer. Splitting it up that way means your system always gets looked at right before the season where it works the hardest.
How a tune up differs from a repair
Repairs happen after something breaks, when the house is cold, the outdoor unit is frozen solid or the system just won’t start. At that point you’re on the heat pump’s schedule, and usually it’s during the busiest weeks of the year, when every heating company in town is booked up.
A heat pump tune up turns that around. Our tech tests the parts most likely to fail, like the capacitor, the contactor and the defrost controls, while it’s still mild outside, and if something’s weak, you hear about it in October and get to plan the fix around your own schedule and budget. A lot of the repairs that would be emergencies in January are just quick swaps on a fall visit.
Who should do your tune up
You can absolutely change your own filter and rake the leaves away from the outdoor unit, and we wish more people did. The rest of a heat pump tune up is a different animal, since you’re dealing with high voltage and refrigerant and touchy controls, and the law says whoever handles refrigerant needs EPA certification, not to mention the training and meters it takes to test electrical parts without getting hurt.
Whoever you call should be licensed and insured, and ideally they’ve worked on your brand of heat pump plenty of times. On our end, every heat pump tune up runs off a written checklist, and the tech will show you the readings they took (refrigerant pressures, the temperature split and so on) and tell you in plain language whether those numbers are good news or not. By the time they leave, you should know exactly what got checked and what, if anything, needs some attention.
What’s included at the outdoor unit
In winter the outdoor unit is where your heat pump collects heat from the air, and in summer it’s where it gets rid of it. It’s also where the compressor lives, which is the most expensive part of the whole system, so a good heat pump tune up spends a lot of its time right there.
Cleaning the coil and checking the fan during a heat pump tune up
Look at the outdoor unit and you’ll see the coil, a big grid of thin metal fins wrapped all the way around, and your heat pump can only gather heat as well as air can pass through it. In a year out there it’ll catch dirt and grass clippings, a coat of pollen every spring, pine straw and leaves, and it all piles up like a blanket over the fins.
Clearing all that off the top and sides is step one, then the coil gets cleaned and any bent fins get combed straight. Our tech also eyeballs the fan blade for cracks or a wobble and checks the fan motor. Last, they make sure the unit is sitting level with somewhere for water to drain, since a unit that’s level and clean defrosts right and lets the melted ice run off instead of refreezing in a lump at the bottom.
Refrigerant levels and a look at the lines
All the heat that moves between your outdoor and indoor coils rides along in the refrigerant, and the system was designed around one very exact amount of it. A heat pump that’s running short has trouble heating and leans on the backup, and it can ice itself over too. And because refrigerant circulates in a sealed loop where nothing gets burned off, being low pretty much always tells us there’s a leak.
That’s why the gauges come out on every heat pump tune up, so we can read the pressures and temperatures and see how they stack up against the manufacturer’s numbers. They’ll walk the copper lines too, looking for torn insulation, oily spots or kinks that hint at a leak. When the numbers come back wrong, we’d rather track down and fix the leak with you than just top it off and send you a bill for the same thing next year.
Electrical parts on a heat pump tune up: capacitor, contactor and wiring
The capacitor is what gives the compressor and the fan motor the jolt they need to start, and it’s one of the parts we see fail most, especially after a long, hot summer. We test it with a meter, because a weak capacitor usually looks perfectly fine and still can’t put out full power anymore.
Next to it is the contactor, which is just the switch that turns the outdoor unit on and off, and we pull it to look for burned or pitted contacts. Every wiring connection gets snugged up, and then we clamp a meter on the compressor to see how much power it’s drawing, since a compressor that’s working too hard shows it there long before it fails. Swapping a weak capacitor or contactor during a heat pump tune up costs very little next to the compressor damage it can save you from.
What’s included indoors and at the controls
Inside the house is the half that actually moves the warm air around, and that’s also where the backup heat is tucked away for the really cold days. Then there are the controls, which decide what runs when, and we don’t consider a heat pump tune up complete until we’ve been through all of it.
Indoor coil, blower and air filter checks
Tucked inside the air handler is the indoor coil, which is where the heat actually gets handed off to your air in winter. Let it get dirty and less heat makes it across, so the system just runs longer to make up for it. Our tech gives that coil a good look and cleans it if it needs it, and then moves on to the blower motor and blower wheel, the fan that does all the pushing through your ducts.
A dusty blower wheel can cut airflow enough that you notice it, leaving the far rooms cool and making the whole system work harder. While they’re in there, the tech will replace or check the air filter, measure the temperature difference between the air going into the system and the air coming out, and look at the condensate drain to make sure the water is getting away freely (for the stuff you can do between visits, here are some ways to improve your heat pump’s performance).
Backup heat strips
Most heat pumps have electric heat strips in the air handler that add warmth during defrost cycles and whenever it gets too cold out for the heat pump to keep up by itself. Here in Georgia you might only need them a few days a year, but on those days they matter a whole lot.
So during the heat pump tune up our tech tests every heat strip, checks its electrical connections and makes sure its safety limits work. Burned connections or a dead strip can go unnoticed right up until a hard freeze, when the house just can’t get comfortable, and testing them in the fall means no surprises when the first Arctic blast rolls through.
Thermostat, defrost controls and reversing valve
Since the thermostat is what tells your system what to do, the tech makes sure it’s reading the room temperature accurately and calling for heat, cooling and backup heat at the right times. A setting that sends the system to backup heat too early can quietly push your winter bills up.
Then they run the system through a defrost cycle to make sure the outdoor coil clears its frost and the heating picks back up. The last check is the reversing valve, which switches your heat pump between cooling and heating, because a valve that sticks can leave you with cool air in January, and catching that before winter is about the only way to avoid that kind of surprise.
Why a heat pump tune up matters
A heat pump tune up isn’t just a box to check off. It changes how well your heat pump runs, how long it lasts and how much it costs you every month, and here’s where we see the value show up.
Lower energy bills through both seasons
Heating and cooling are more than half of the energy most homes use, so efficiency losses pile up fast. A dirty coil, a weak capacitor, refrigerant that’s a little low or a thermostat that calls for backup heat too soon can each make your heat pump work harder than it should.
The biggest hidden cost is that backup heat. Say something small and fixable is keeping your heat pump from keeping up. The electric heat strips quietly pick up the slack, they cost a lot more to run, and you’d never know it except for the bill. Once a heat pump tune up has the coils clean, the refrigerant right and the controls set the way they should be, the heat pump goes back to carrying its own load, and your bills settle down in the winter and the summer both.
Fewer breakdowns and a protected compressor
Most heat pump failures we see start out small. A capacitor gets weak, a contactor wears down, or a refrigerant leak gets slowly worse, and left alone, every one of those makes the compressor strain a little harder each time it starts, which in a winter full of temperature swings is a lot of extra starts.
The compressor is the heart of your heat pump and the most expensive part in it, so catching the small things that stress it is one of the best ways we know to avoid a major repair. And it spares you that no-heat call in the middle of a cold snap, which is the worst possible time, because everybody in the HVAC business is slammed and you’re stuck in a chilly house until somebody can get to you.
Protecting your warranty and your system’s lifespan
Here’s one that bites people. Plenty of heat pump manufacturers won’t honor a parts warranty unless you can show regular professional maintenance, so if the compressor goes and there are no service records, you could be looking at a denied claim, and a heat pump tune up once or twice a year is what builds that paper trail.
There’s the lifespan to think about too. Clean and properly charged, a heat pump just doesn’t wear out as fast as one that’s fighting itself every day. You get the years you paid for. And on the day replacing it finally makes sense, you’ll have the records to see it coming, so it’s a plan and not a surprise.
When to schedule a heat pump tune up and how to get ready
Good timing makes a heat pump tune up easier to book and more useful once it’s done, and a little prep on your end lets the tech focus on what matters.
The best times of year for a tune up
Around Georgia we try to get every heat pump in twice. The fall heat pump tune up happens somewhere from September through early November, before the first real cold snap, and the spring one lands from March through April so the cooling side is ready by the time it gets hot.
The nice thing about both of those windows is the weather’s mild, so nobody’s sweating or shivering while we’ve got the system shut down. It’s also before the repair calls start piling up. Once the temperature takes a hard turn in either direction, our phones light up, and you’ll wait longer for an appointment.
Why this El Niño winter raises the stakes for a heat pump tune up
NOAA and the regional forecasters are betting on a strong El Niño for the 2026 to 2027 winter. Around Georgia that usually means wetter weather, mild stretches interrupted by sharp Arctic cold and a bigger chance of ice storms, with north Georgia getting the worst of it (if you’re curious, we wrote up how El Niño and La Niña change the winter).
Heat pumps don’t love that kind of winter. The damp cold keeps frosting up the outdoor coil, so it’s defrosting over and over, and every sudden cold snap shoves the system up against its limits and onto the backup heat. Throw in an ice storm and a power outage and now it’s doing hard restarts in a cold house. If your heat pump already has a weak capacitor, low refrigerant or a defrost control that’s acting up, that’s the winter that finds it, and it’s the reason we’re pushing the fall heat pump tune up harder this year.
Getting ready and choosing a maintenance plan
You can make the visit go faster by clearing a path to both units and cutting the plants back to about two feet of open space around the one outside. And if anything’s seemed off lately, write it down for us, whether it’s a weird noise, ice that never melts, a bedroom that stays cool or a bill that jumped, because our tech can find a problem a lot quicker when they know where to start looking.
Honestly, the people who never miss a heat pump tune up are mostly the ones on a maintenance plan. Plans usually schedule both seasonal visits for you and often throw in priority service when the weather turns extreme, plus repair discounts, and our Comfort Club works that way. With a system that runs as many hours as a heat pump does, we’ve found that steady care like that really does pay you back over the years.
Frequently asked questions about heat pump tune ups
What is included in a heat pump tune up?
Ours goes through the outdoor unit, the indoor unit and the controls. Both coils get cleaned and the fan and blower get checked, and we’ll measure the refrigerant and test the capacitor, the contactor and the backup heat strips before running a defrost cycle. The reversing valve and the thermostat are the last two things we look at before calling a heat pump tune up done.
How often should a heat pump be tuned up?
We’d go with twice a year. Fall is for the heating side and spring is for the cooling side, because the same heat pump is carrying you through both.
Is a heat pump tune up worth the cost?
In most of the homes we see, it more than pays for itself. Your heat pump goes back to carrying its own load instead of running the expensive backup heat, we catch the weak parts before they leave you cold, and the compressor, which is the most expensive part of the system, gets protected along the way.
Can I tune up my heat pump myself?
Part of it, sure, like the filter and keeping leaves and debris off the outdoor unit. Leave the refrigerant checks, the electrical testing and the control adjustments to a trained tech, though, since that’s where the danger is, and handling refrigerant takes EPA certification anyway.
Does a tune up affect my heat pump warranty?
It can, because many manufacturers want proof of regular professional maintenance before they’ll honor a parts warranty. Keeping your heat pump tune up records protects you if a major part fails.
Why does my heat pump use backup heat so much?
A certain amount of backup heat is normal during defrost and in very cold weather. When it’s running constantly, though, it can point to low refrigerant, a dirty coil, a faulty control or a thermostat setting, and those are all things a heat pump tune up checks.
Why is a fall tune up more important this year?
Because of the strong El Niño in the forecast, which for Georgia usually means damp cold, sharp temperature swings and a better chance of ice storms. A winter like that has your heat pump defrosting more and restarting hard after outages, and every one of those is a chance for a weak part to finally quit.
Book your heat pump tune up before the cold arrives
Not much else in your house works as many hours as the heat pump does, and a professional heat pump tune up is how you keep it ready for whatever this winter decides to do. If we catch the small stuff now, you’re looking at lower bills and fewer breakdowns, and a house that stays warm when the temperature falls off a cliff.
The Air Conditioning Specialist services heat pumps for homeowners in Covington, Milledgeville, Augusta, Athens and the surrounding Georgia communities. On every heat pump tune up our technicians go through a complete checklist, tell you what they find in plain language and help you keep the system running efficiently in every season. Give us a call to book your heat pump maintenance visit and we’ll get you on the schedule before the cold gets here, and if we find something that needs fixing, our heat pump repair team can usually take care of it on the spot.