Fortunately, you can often repair a noisy air conditioner yourself without having to call an HVAC pro, who’s probably going to be extremely busy this time of year anyway.

The kit comes with a new rubber grommet that seals the low side and high side A/C system hoses through the firewall opening. A two-piece metal retainer is included and is utilized to secure the ...

Install the new rubber grommets and inspect to see if any air gaps remain. Applying some of the sealant rope around the tubes effectively closes off any air gaps.