The air con make noise at the middle of the night - air con repair Hong Kong

 Noisy air conditioner 

Our customer told us, the air con has noisy during middle of the night, he turn the machine off and after a while he switch on the noisy come again. 

To find out where the noise come from,  first - find out it is fm indoor or outdoor unit and check which parts cause the noise and replace that 

Environmental friendly freon - R32 (Hong Kong AC)

 R32 freon air con - Hong Kong air conditioner

R22 freon 

At the beginning of 1990, most of the air conditioner is using R22 freon gas / refrigerator for their air con. The advatange of R22 freon is low pressure, in full load condition the pressure is around 60psi/ 1.73 MPA. 

The ODP of R22 freon is 0.055, it is non-flammable freon. 

R410 freon 

By 2010, R410 freon air conditioner start being promoted by gov/ shop, it is because the ODP is 0. R410 is also none -flammable freon. 

R32 freon

By 2020, lot of company promote R32 freon air con and Hong Kong government is not allow shop import R410 air con in 2025. It means most of the air con will be using R32 freon. 

The advantage of R32 freon are, 

- The ODP is 0 

- GWP is 675, - the lowest compare with r22/r410 

The dis-advantage of R32 freon air con 

- it belongs to A2L grade - MILDLY FLAMMABLE GAS, should not install in kitchen area

(air con supplier provide training for technician to learn about the new freon to avoid accident happen)