Car AC Regas Near Garston, WD25 — From £49 | Watford MOT Centre Garston is just 5 minutes from Watford MOT Centre, making us the closest and most convenient option for AC regas in the WD25 area. Same day air conditioning recharge from £49 — walk in any time, no appointment needed. How Often Should You Regas Your AC? Most manufacturers recommend an AC regas every 2 years. Even if your air con feels like it's working, refrigerant levels gradually drop over time — meaning the sy