2021 Honda CR-V: A/C Refrigerant & Oil
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Quick answer
- Refrigerant type: HFO-1234yf
- Full system charge: 16.0 oz (450g)
- PAG oil type: PAG 46
- PAG oil amount: 3.4 fl oz (100 mL)
- Low-side service port location: Near the firewall, on the passenger side of the engine bay
- High-side service port location: In front of the radiator, on the passenger side
Why R-1234yf matters
The 2021 Honda CR-V uses the newer HFO-1234yf refrigerant, which has a much lower global warming potential (GWP) than the older R-134a. This change was mandated by the EPA starting in 2014, and by 2021, most new vehicles were using R-1234yf. While better for the environment, R-1234yf is more expensive and flammable than R-134a, and it requires special equipment for service and recovery.
Recharge procedure
A proper A/C recharge is not a simple top-off. The system must be fully evacuated with a vacuum pump to remove any air and moisture. Then, the exact amount of refrigerant must be added by weight, not by pressure. Overcharging or undercharging can damage the A/C system and lead to poor performance.
Common A/C problems for this vehicle
While the 2021 Honda CR-V is a reliable vehicle, some common A/C problems have been reported. These include:
- Compressor failure: The A/C compressor is the heart of the system, and it can fail due to a variety of reasons, including leaks, contamination, and electrical problems.
- Condenser issues: The condenser is located in front of the radiator, and it can be damaged by road debris. A clogged or damaged condenser will prevent the refrigerant from properly cooling.
- Evaporator leaks: The evaporator is located inside the dashboard, and it can develop leaks over time. A leaking evaporator will cause the A/C system to lose refrigerant and stop cooling.
When to call a pro
If you are not comfortable working on your own A/C system, it is best to leave it to a professional. A certified A/C technician will have the proper equipment and expertise to diagnose and repair any problems with your system. They will also be able to handle the refrigerant safely and legally.
Disclaimer: It is illegal to work on an A/C system without an EPA 609 certification. Attempting to do so can result in fines and/or imprisonment.
Find a certified A/C shop on Repairius.
More specs for the 2021 Honda CR-V
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2021 Honda CR-V Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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