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What Belongs Around the Outdoor Unit, and What Doesn't

You look out the window and the outdoor unit has ivy climbing the side, a wheelbarrow leaning against it, and grass clippings packed into the coil. You want to know if that matters. It does, and the fix takes about ten minutes twice a year. Here is what belongs around that unit, what does not, and when to call us.

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By our service team · vetted by the techs who do this daily

What Happens When You Let It Close In

The outdoor unit works by moving heat into the air around it, and it needs to pull air through the coil on all sides and blow it out the top. Crowd it with shrubs, stacked firewood or a fence panel and the same hot air gets recycled. The unit runs longer, the compressor runs hotter, and the house never quite catches up on an August afternoon. Over a few seasons that heat wears out the compressor and the fan motor early. Grass clippings and cottonwood fluff pack into the coil fins like felt, and once they are wet and matted they need a proper cleaning, not a garden hose.

The Two Foot Rule, and the Five Foot One Above

Give the unit two feet of open air on every side and about five feet of clear space overhead. That means no deck stairs an inch off the cabinet, no lattice screen tight against the coil, no shrub that will be three feet wide by July. If you want to hide the unit, set the screening back so a technician can pull the top panel and get both hands inside. We also need room to swing a gauge set and set a recovery cylinder down. On a heat pump or dual fuel system, keep the base clear too, because it has to drain when it defrosts in winter.

The Habit That Prevents All Of It

Walk around the unit once a month during the seasons you are running it, and look at three things. Is anything touching the cabinet. Is the coil surface still open, or is it grey with dust and clippings. Is the top clear. Pull weeds by hand, rake leaves away, and aim the mower discharge the other direction. In fall, clear the leaves that pile against the base after the first hard wind. In spring, check for winter debris and for anything a critter dragged under there. Twice a year is the minimum, monthly is better, and it costs you nothing but a few minutes.

Winter, Propane And Dual Fuel Considerations

If you have a heat pump, the outdoor unit runs in winter too, so it cannot be buried in snow or covered with a tarp. Covering a running unit traps moisture and starves it for air. A plywood lid on legs above the fan, with all four sides open, is fine for keeping icicles off. Keep the base clear so defrost water can run away instead of freezing into a block under the coil. On dual fuel systems the propane furnace takes over in the coldest weather, but the heat pump still carries the mild days, and it needs the same clearance in January that it needed in July.

Signs It Is Already Too Late For A Broom

Call us for air conditioning repair if the unit runs and runs without cooling the house, if the air coming off the top feels weak instead of strong and warm, or if you see ice on the copper lines in summer. Fins that are crushed or a coil that stays grey after a rinse need cleaning with the right tools and chemicals. Grinding, rattling or a fan that hesitates before it starts means a motor or capacitor, not a clearance problem. In winter, a heat pump that stays iced over after a defrost cycle needs heating repair. We cover homeowners across Kentucky, Indiana, Ohio, Tennessee, West Virginia and Georgia.

What Belongs Around the Outdoor Unit, and What Doesn't — common questions

Can I plant flowers or shrubs around the outdoor unit?

Yes, if you plant them at their mature width away from the cabinet, not their nursery-pot width. Two feet of clear air on every side. Low bedding flowers are safer than shrubs, and skip anything that sheds seed fluff or heavy blossoms.

Should I cover the unit for winter?

No full cover. It traps moisture and, on a heat pump, blocks the airflow the unit needs all winter. A lid raised above the fan with open sides is acceptable if you want to keep falling ice off the top.

How do I clean the coil myself?

You can rake leaves and pull weeds away from the cabinet and rinse loose debris off the outside with a gentle hose stream, power off. Anything past that, including matted fins or chemical cleaning, is work we should do.

How it works

  1. Step 1

    Tell us the symptom

    Call or fill in the quote form and describe what changed. Warm air, no air, a smell, a noise, a breaker that keeps tripping. That detail tells us what parts to bring along.

  2. Step 2

    We diagnose on site

    We check the thermostat, the electrical side, airflow and the equipment itself before we quote anything. If the problem sits in the ductwork rather than the unit, we say so plainly.

  3. Step 3

    We repair and explain

    Most air conditioning repair and heating repair work finishes in one visit. We show you the failed part, explain what caused it, and tell you what to watch for next season.

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Why homeowners call us

  • Propane and dual fuelPlenty of homes in our service area run propane heat or a dual fuel setup with a heat pump. We know how those systems switch over and why a bad changeover setting can leave you cold and burning fuel.
  • Older houses, added ductworkFarmhouses often got ducts decades after they were built, run through crawl spaces and attics. When the equipment tests fine but rooms still fight each other, we look at the duct runs and static pressure.
  • Repair before replacementA failed capacitor, a cracked wire, a clogged drain or a bad control board is a repair, not a new system. We tell you when the equipment is genuinely finished and when it is not.
  • Plain talk on the phoneWe ask what the thermostat reads, whether the outdoor unit is spinning, and when it last worked normally. That two minute conversation often shortens the visit and keeps the repair cost down.
  • All major brands, gas & electricCarrier, Trane, Lennox, Goodman, Rheem, York and more, as an independent company.
  • Straight answersIf a system is not worth repairing, we say so, often right on the phone.

About this guide

Applies toAll major brands
Safe checksYes
PricingWritten quote
Open7 days

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  • Open 7 days
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  • All major brands
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