Line Sets With Quick Coupling For DIY Heat Pumps

precharged line set

Checkout Hot-selling Products

We are a manufacturer of HVAC spare parts and OEM products service for heat pumps in China for many years

Our Services

Offering the technical solution, tooling design, and testing application


Technical Solution

Our technical team provides product drawings and technical services including testing before mass production.

OEM & ODM Available

We support any form of OEM and ODM service for your products like mini-split line sets with quick coupling for DIY heat pumps.


Our Clients Say

Denizhan ÇAVUŞLARSenior Electrical Maintenance Engineer
Read More
I can confidently recommend Jenny Cheng and her company as name Grana Metal for trading and importing their special and high quality goods. I have always known Mrs. Cheng to be a person who is honest, and hard-working.
Emre Erol
Emre ErolSenior Procurement Executive
Read More
I know GRANA in the 2013 year and established long and happy cooperation. Anyway, Jenny cheng is the most communication efficiency among Chinese suppliers I have known, that help to save me a lot of working time.
Mohammad Jahangir
Mohammad JahangirHVAC Design Engineer
Read More
DIY Line set is really excellent and save my a lot of money and I believe it and trust GRANA products
Larry  Smith
Larry SmithBusiness Leader
Read More
I am writing to recommend Jenny Cheng (Grana Metal) for long term cooperation and kind trading for years betweem her and our company.

DIY Your Mini-split Air Conditioner

This easy-to-use line set greatly simplifies the installation process. It is pre-charged from our factory for the precise amount of refrigerant necessary for the 2-3ton universal heat pump split system.

which means that this line set requires no charging in the field and no vacuuming. it is 100% ready to go right out of the box and quicker installation than conventional linsets 

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “”