R32 R134a R410a R600a Refrigerant Gas Guide

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R32 / R134a / R410a / R600a Refrigerant Gas Guide: Introduction and Overview

The most critical component circulating at the heart of refrigeration and air conditioning systems is, without a doubt, the refrigerants. From split air conditioning systems to industrial cold rooms, and from household refrigerators to supermarket sections, every system depends on the correct gas selection. Using the wrong gas, the wrong compressor or the wrong manifold set means loss of performance, compressor burnout, leaks and even a fire risk. That is why the R32 / R134a / R410a / R600a Refrigerant Gas Guide we have prepared is designed as a comprehensive reference source for both HVAC technicians and refrigeration system engineers.

For years, Yedepa.com has been supplying R32, R134a, R410a, R600a, R404A and R22 compatible Danfoss scroll compressors, BOCK semi-hermetic reciprocating compressors, Rothenberger vacuum pumps and manifold sets. In this guide, we will examine step by step the chemical identity of each gas, operating pressures, GWP (Global Warming Potential) values, which systems they should be used in and the correct equipment selection.

Technical Details and Working Principle: The Identity of Each Gas

The basis of the refrigeration cycle is that the refrigerant absorbs heat from one environment through phase change and carries it to another. Circulating between the compressor, condenser, expansion valve and evaporator, this refrigerant is selected according to pressure and temperature values. Here is the technical identity of the four basic gases:

Gas	Type	GWP	Flammability	Typical Use
R32	HFC (single component)	675	A2L (mildly flammable)	Split air conditioners, VRF, heat pumps
R134a	HFC	1430	A1 (non-flammable)	Refrigerators, automotive air conditioning, medium temperature refrigeration
R410a	HFC blend (R32+R125)	2088	A1	Air conditioners, heat pumps, packaged systems
R600a	HC (isobutane)	3	A3 (flammable)	Household refrigerators, small commercial refrigeration

R32 was born as a half solution of R410A; since it is a single-component gas, a full charge can be made after a leak. R134a is a classic HFC and is still dominant despite its high GWP due to its wide equipment compatibility. R410a operates at high pressure (between 38-42 bar) and therefore requires a special manifold, hoses and vacuum pump. R600a on the other hand, is a natural hydrocarbon; it is environmentally friendly, but since it is in flammability class A3, it is used only in low-charge (≤150 g) household systems.

Models and Types: Which Compressor for Which Gas?

Refrigerant selection alone is not enough; the selection of a compressor compatible with the gas is also vital. Below we have summarized gas-compressor compatibility:

For R410A: Scroll compressors resistant to high pressure. Example: models such as the Danfoss DSH381-4 (30,370 W) and Danfoss SH 300 (75,186 W, 25 Hp) are optimized for R410A.
For R134a: Semi-hermetic reciprocating compressors. BOCK HGX88e/3235-4 S, BOCK HGX88e/2735-4 S, BOCK HGX88e/2400-4 S and similar 8-cylinder industrial models are dual compatible with R134a + R404A.
For R32: Rotary compressors used in new-generation split air conditioners; in addition, for R32 charging the Rothenberger ROAIRVAC R32 9.0 Two-Stage Vacuum Pump is a must.
For R600a: Low-charge hermetic compressors (Embraco, Aspera type). Specific to household refrigerators.

For 6-cylinder medium-to-large scale, the BOCK HGX66e/2070-4 S and BOCK HGX66e/1750-4 S models are preferred in R134a/R404A cold rooms, fish display cases and supermarket central refrigeration.

Which Model Should You Choose for Which Situation?

When making a decision, we look at three basic parameters: Application temperature range, system capacity (BTU/h or kW) and legal regulation. By reading the scenarios below, you can make the right choice:

Residential split air conditioner (9,000-24,000 BTU): R32 first. Since the F-gas regulation restricts R410A in new installations, R32 is becoming the standard. For service, an R32 compatible manifold (e.g. Rothenberger 1500000030 Valved Manifold Hose Set) is mandatory.
VRF / central air conditioning systems (60,000+ BTU): R410A is still dominant. Danfoss DSH series scroll compressors are preferred in these systems. As a 4-way reversing valve, the Dunan DSF-50 (170,000 BTU) is critical when switching to heat pump mode.
Cold room, meat-fish section (medium temperature): R134a + BOCK HGX series semi-hermetic compressor is ideal. BOCK HGX88e models in the 8,011 USD to 9,273 USD range meet 8-cylinder industrial capacity.
Low temperature (-25°C / -40°C freezing): While R404A was the standard in the past, the transition to R448A/R449A has now begun; however, on the equipment side, the R134a compatible BOCK HGX66e and HGX88e series are still the first choice with economizer expansion valve systems.
Household refrigerator maintenance: R600a. Since the charge is between 30-90 g, a special R600a manifold and tightness are important; working away from sparks is a must.

R32 / R134a / R410a Compatible Products Available at Yedepa.com

The Yedepa.com catalog offers a wide product range for the gas types mentioned in this guide. Here are the featured models in stock:

BOCK HGX88e/3235-4 S — Semi-Hermetic 8-Cylinder Compressor, IP65, 380–420V, R404A & R134a compatible. The top model for industrial refrigeration, starting from approximately 9,273 USD.
BOCK HGX88e/2735-4 S — 380–420V 3 phase, IP65, R134a/R404A compatible 8-cylinder; approximately 8,342 USD.
BOCK HGX88e/2400-4 S — Industrial 8-cylinder, R404A/R134a, approximately 8,011 USD.
BOCK HGX66e/2070-4 S — 440–480V Y/YY, 60 Hz, IP66, R404A & R134a compatible 6-cylinder; approximately 6,370 USD.
BOCK HGX66e/1750-4 S — 380–420V Y/YY, IP66, R404A/R134a, 6-cylinder reciprocating; approximately 5,499 USD.
Danfoss SH 300 — 25 Hp R410A scroll compressor, 75,186 Watt; approximately 2,923 USD.
Danfoss DSH381-4 — 30,370 Watt R410A scroll, 3 phase; approximately 3,318 USD.
Rothenberger ROAIRVAC R32 9.0 — Two-stage vacuum pump, 255 l/min, 750W; approximately 600 USD.
Rothenberger 1500000030 — Valved Manifold Hose Set 1500mm, 5/16" R410A-R32; approximately 156 USD.
Rothenberger 1000050093 — Standard Manifold Set (R32/R410A); approximately 110 USD.
Dunan DSF-50 — 4-Way Air Conditioner Reversing Valve, R410A/R32/R22 compatible; approximately 132 USD.
MG-10 Digital Manifold Gauge Set — Compatible with 88 different refrigerants (R410A, R32, R134a, R22), with vacuum and leak test functions; approximately 125 USD.

These products are preferred by HVAC technicians and industrial refrigeration companies throughout Turkey, and all are offered as original and with technical service support under the Yedepa.com guarantee.

Selection Criteria and Professional Tips

Acting hastily when selecting a gas or equipment is the most common mistake. Evaluate the following criteria in order:

Application temperature: Different gases are suitable for low (-40°C), medium (-15°C) and high (+5°C) temperature refrigeration. R134a is preferred at medium/high temperatures, R404A at low temperatures.
GWP and legal compliance: The EU F-gas and the Ministry of Environment regulations in Turkey are gradually restricting high-GWP gases. Prefer R32 or a natural refrigerant in new investments.
Pressure resistance: Because of the 38-42 bar at which it operates, R410A must never be connectedto low-pressure equipment (e.g. an old R22 manifold). Always use Rothenberger manifold sets labeled R410A/R32.
Oil compatibility: HFC gases (R32, R134a, R410a) work with POE (polyolester) oil, while R600a works with mineral oil. The wrong oil burns out the compressor bearing.
Vacuum time: A deep vacuum of at least 30 minutes is a must for R32 and R410A systems; two-stage pumps such as the Rothenberger ROAIRVAC R32 9.0 go below 5-10 Pa.
Tightness test: A 30-40 bar pressure test with nitrogen should be performed before charging; the leak test function in the MG-10 Digital Manifold Gauge Set automates this process.

Our Yedepa.com technical team provides technician + service-focused B2B consultancy on compressor selection and gas compatibility. To prevent the wrong model from being shipped, we kindly ask you to confirm the BTU/h, gas type and voltage information together with us before ordering.

Maintenance and Usage Recommendations

Periodic maintenance is essential to extend the life of refrigeration systems. Here are the long-life rules distilled from field experience:

Annual check: Superheat and subcooling values should be measured; deviation increases the compressor load.
Filter drier: The drier must be renewed at every maintenance or compressor replacement. Otherwise, moisture reacts with the POE oil and forms acid.
Vacuum quality: Gas charging should not be done without going below 500 microns (approximately 66 Pa). Violating this rule is a costly mistake, especially for R32 and R410A systems.
Oil level: In BOCK HGX series semi-hermetic compressors, the oil level should be routinely checked via the sight glass.
Electrical connections: 3-phase imbalance should not exceed 2%; a phase protection relay should be used. Otherwise, the windings of Danfoss DSH/SH and BOCK HGX models burn out within a short time.
Refrigerant leak: F-gas legislation requires an annual leak test for systems above 3 kg. In a system where a leak is found, the test should be repeated within 1 month.

Frequently Asked Questions (FAQ)

Can I charge R32 instead of R410A?
No. R410A is a blend gas, and although it uses the same compressor/oil as R32, the system pressure and superheat curve are different. Putting R32 in an R410A system leads to capacity loss and compressor failure; the right way is to completely evacuate the old gas and switch to equipment suitable for the new gas.

Is R134a still used, or has it been banned?
Apart from automotive air conditioning, R134a is still in active use in commercial/industrial refrigeration. It was banned in new cars in the EU, but in Turkey it is widely used in stationary systems such as cold rooms and supermarket sections with compressors such as the BOCK HGX88e and HGX66e.

My R600a refrigerator is leaking, who refills it?
Since R600a is a flammable hydrocarbon, it must be charged by a certified technician in a ventilated environment. Yedepa.com provides technician referrals on this matter; a spark-free environment and a special manifold are a must.

Can an R410A vacuum pump be used for R32?
Yes, an R410A pump is also suitable for R32, because R32 is already half of the R410A blend. However, since it is in the flammable A2L class, models with a spark-proof motor such as the Rothenberger ROAIRVAC R32 9.0 should be preferred.

My manifold set is an old R22 model, can I use it for R410A?
No. R410A operates at 38-42 bar; old R22 manifolds withstand a maximum of 35 bar. You should switch to the Rothenberger 1000050093 Standard Manifold Set (R32/R410A) or the valved 1500000030 set.

Which gases is the 4-way valve compatible with?
Dunan DSF-50 model is compatible with R410A, R32 and R22; with 7/8" inlet x 1 1/8" outlet dimensions it has a capacity of 170,000 BTU and is ideal for switching modes in heat pump systems.

How long should the vacuum pump run?
1-2 hours with a single-stage pump; with a two-stage model such as the ROAIRVAC R32 9.0, 30-45 minutes of deep vacuum is sufficient. The target is below 500 microns.

Digital or analog manifold?
Digital is preferred in the field for precision and data logging. MG-10 Digital Manifold Gauge Set recognizes 88 different gases and includes leak test and vacuum functions.

Conclusion and Yedepa.com Advantages

R32, R134a, R410a and R600a are gases that each belong to a different world of application, pressure and regulation. A wrong selection creates serious risks not only in terms of performance loss but also in terms of equipment life and occupational safety. Therefore, correctly combining the compressor-manifold-vacuum trio we covered in the scope of the R32 / R134a / R410a / R600a Refrigerant Gas Guide is the cornerstone of professional HVAC applications.

As Yedepa.com, we offer Turkey's widest B2B refrigeration equipment stock with a technician and service focus, including Danfoss DSH and SH series scroll compressors, BOCK HGX88e and HGX66e semi-hermetic reciprocating compressors, Rothenberger ROAIRVAC vacuum pumps and manifold sets. During product selection, you can consult our technical team and complete fitment and gas compatibility verification before ordering. For the right gas + right compressor + right measuring instrument combination, the Yedepa.com catalog is the first point of reference for HVAC specialists.