🔧 HR-V - A/C Compressor Replacement

Replacing the A/C compressor on your HR-V means recovering the refrigerant, removing the drive belt, disconnecting the refrigerant lines, swapping the compressor, then evacuating and recharging the A/C system. This repair must be done cleanly because dirt or moisture can damage the new compressor quickly.

Difficulty Level: Advanced | Estimated Time: 3-5 hours

---

⚠️ Safety & Precautions

• ⚠️ Do not vent refrigerant into the air. The A/C system must be professionally recovered with an A/C recovery machine before opening any lines.
• ⚠️ Refrigerant can cause frostbite. Wear safety glasses and gloves any time A/C fittings are handled.
• ⚠️ Disconnect the negative battery cable before unplugging the compressor clutch connector.
• ⚠️ Keep all A/C line openings capped. Moisture and dirt can ruin the compressor and expansion valve.
• ⚠️ If the old compressor failed internally or made grinding noise, the condenser, receiver/drier, and expansion valve may also need replacement and the lines may need flushing.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 12mm socket
• 14mm socket
• 17mm serpentine belt tool
• 3/8-inch drive ratchet
• 3/8-inch drive extension set
• Torque wrench 5-80 Nm
• Line cap plug set (specialty)
• A/C manifold gauge set R-134a (specialty)
• A/C vacuum pump 2-stage (specialty)
• A/C refrigerant scale (specialty)
• A/C recovery machine (specialty)
• O-ring pick set
• Plastic trim clip remover
• Floor jack rated 2-ton minimum
• Jack stands rated 2-ton minimum
• Wheel chocks
• Nitrile gloves
• Safety glasses

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• A/C compressor assembly - Qty: 1
• A/C compressor O-ring seal kit - Qty: 1
• R-134a refrigerant - Qty: Use under-hood label amount
• PAG compressor oil - Qty: Match amount drained from old compressor
• Serpentine drive belt - Qty: 1
• A/C condenser with receiver/drier - Qty: 1 if compressor failed internally
• A/C expansion valve - Qty: 1 if compressor failed internally

---

📋 Before You Begin

• Park your HR-V on level ground and set the parking brake.
• Have the refrigerant recovered by a certified A/C shop before opening the system.
• Write down the refrigerant charge amount from the under-hood A/C label before starting.
• Let the engine cool completely before working near the belt and compressor.
• Disconnect the negative battery cable using a 10mm socket.
• An A/C manifold gauge set measures system pressure. A vacuum pump removes air and moisture before recharge.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Recover the Refrigerant

• Use an A/C recovery machine to recover the refrigerant from the system.
• If you do not have this machine, have a shop recover the refrigerant first, then bring your HR-V home for the compressor replacement.
• Confirm both high-side and low-side pressures are at 0 psi before loosening any A/C line.

Step 2: Raise and Support the Vehicle

• Place wheel chocks behind the rear wheels.
• Use a floor jack rated 2-ton minimum to raise the front of your HR-V.
• Set it securely on jack stands rated 2-ton minimum.
• Wear safety glasses before working underneath.

Step 3: Remove the Lower Splash Shield

• Use a plastic trim clip remover to remove the plastic clips from the lower engine splash shield.
• Use a 10mm socket to remove any lower shield bolts.
• Lower the splash shield and set it aside.
• Keep clips grouped together.

Step 4: Remove the Serpentine Belt

• Take a photo of the belt routing before removal.
• Use a 17mm serpentine belt tool on the belt tensioner and rotate the tensioner to release belt tension.
• Slide the belt off the A/C compressor pulley.
• Slowly release the tensioner. Do not let it snap back.
• If the belt is cracked, glazed, or noisy, replace it now.

Step 5: Disconnect the Compressor Electrical Connector

• Use your fingers to press the lock tab on the A/C compressor clutch connector.
• If it is stuck, gently help the tab with a plastic trim clip remover.
• Move the harness aside so it cannot get pinched during removal.

Step 6: Disconnect the A/C Lines

• Use a 10mm socket or 12mm socket to remove the bolt holding the suction and discharge line block to the compressor.
• Carefully pull the line block straight away from the compressor.
• Use a line cap plug set to cap the open compressor ports and A/C lines immediately.
• Use an O-ring pick set to remove the old O-rings from the A/C line fittings.
• Do not reuse old O-rings.

Step 7: Remove the Old Compressor

• Support the compressor with one hand.
• Use a 12mm socket or 14mm socket with a 3/8-inch drive ratchet and 3/8-inch drive extension to remove the compressor mounting bolts.
• Lower the compressor out from the bottom of the engine bay.
• Do not spill compressor oil on painted surfaces.

Step 8: Measure Compressor Oil

• Drain oil from the old compressor into a clean measuring container.
• Drain shipping oil from the new compressor if instructed by the compressor supplier.
• Add the same amount of fresh PAG compressor oil to the new compressor that came out of the old one.
• If the old compressor had a catastrophic internal failure, follow the compressor supplier’s full-system oil balance instructions.
• Turn the new compressor clutch hub by hand 10 times to distribute oil before installation.

Step 9: Install the New Compressor

• Lift the new compressor into position from below.
• Start all mounting bolts by hand first to avoid cross-threading.
• Use a 12mm socket or 14mm socket to snug the mounting bolts evenly.
• Use a torque wrench 5-80 Nm to tighten the compressor mounting bolts to Torque to 24 Nm (18 ft-lbs).

Step 10: Reconnect the A/C Lines

• Lightly coat the new O-rings with clean PAG compressor oil.
• Install the new O-rings onto the suction and discharge line fittings by hand.
• Remove the caps from the lines and compressor only when ready to connect them.
• Push the line block straight onto the compressor ports.
• Use a 10mm socket or 12mm socket to install the line retaining bolt.
• Use a torque wrench 5-80 Nm to tighten the A/C line bolt to Torque to 10 Nm (7 ft-lbs).

Step 11: Reconnect the Electrical Connector

• Push the A/C compressor clutch connector in until it clicks.
• Gently tug the connector by hand to confirm it is locked.
• Make sure the wire harness is routed away from the belt and pulley.

Step 12: Install the Serpentine Belt

• Route the belt according to your photo from Step 4.
• Use a 17mm serpentine belt tool to rotate the tensioner.
• Slide the belt over the final pulley, then slowly release the tensioner.
• Check every pulley groove by sight and hand. The belt must sit fully in each groove.

Step 13: Reinstall the Splash Shield

• Raise the lower splash shield into place.
• Use a plastic trim clip remover to reinstall the plastic clips.
• Use a 10mm socket to reinstall the lower shield bolts.
• Snug the shield bolts gently. Do not overtighten plastic panels.

Step 14: Evacuate the A/C System

• Connect the A/C manifold gauge set R-134a to the high-side and low-side service ports.
• Connect the center hose to the A/C vacuum pump 2-stage.
• Open both manifold valves and run the vacuum pump for at least 30-45 minutes.
• Close both valves and turn off the pump.
• Let the system sit for 10-15 minutes. The vacuum should hold steady.
• If vacuum drops, there is a leak that must be fixed before charging.

Step 15: Recharge the System

• Use an A/C refrigerant scale to charge the exact refrigerant weight listed on the under-hood label.
• Charge through the low-side port using the A/C manifold gauge set R-134a.
• Start the engine only after the initial safe charge amount has entered the system.
• Turn A/C to MAX COOL, blower high, and doors open.
• Finish charging by weight. Do not guess by pressure alone.

Step 16: Final Leak and Operation Check

• Use safety glasses and inspect the compressor line connections for oil residue or hissing.
• Confirm the compressor engages and disengages normally.
• Check that the center vents blow cold air after a few minutes.
• Remove the manifold gauge set carefully and reinstall the service port caps by hand.

---

✅ After Repair

• Let your HR-V idle with A/C on MAX for 5-10 minutes and listen for belt squeal, rattling, or clicking.
• Check under the vehicle for oil or refrigerant dye residue near the compressor fittings.
• Road test for 10 minutes and confirm stable cold air at idle and while driving.
• If cooling is weak, do not keep adding refrigerant. Recheck charge weight, leaks, condenser fan operation, and compressor command.
• If the compressor failed internally, replace the condenser/receiver-drier and expansion valve before continued use.

---

💰 DIY vs Shop Cost

Shop Cost: $900-$1,600+ (parts + labor + recovery/recharge)

DIY Cost: $350-$850 (parts only, not including A/C equipment)

You Save: $400-$800 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-5 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.