Sniffing leaks at less than 0.03 oz/yr (1g/a), the DR58 detects all HFC, CFC, HCFC, HFO and blended refrigerants with superior sensitivity at detecting R410A refrigerant. No more guessing about what’s leaking.
I am a do it yourself kinda guy. Discovered had hvac leak. Called a company and they could not find it then charged allot for refill. So I bought this found the leak in minutes easily with the DR58. Repaired the leak and recharged per manufacturer specs. I saved hundreds of dollars using this tool. It is so easy to use and when you are close to the leak you can change the sensitivity on the fly to make sure you are on the exact spot. I could easily resell it but kinda don't want to just in case. The money I saved paid for it. I would highly recommend it to a first time user or a pro it will do the job.