Katoomba Hospital has switched from a walk-in coronavirus testing clinic to a drive-through clinic.
Vehicle entry is via Woodlands Road, to the clinic which has been operating since June 22.
The drive-through clinic allows staff to test more people more quickly.
"We're now testing around 100 people a day which is double the average number tested at the previous walk-in clinic," said a Nepean Blue Mountains Local Health District spokesman.
"People remain in their cars while waiting and during the test, so they can stay warm and out of the winter weather."
But nurses are finding it harder to keep warm, after two outdoor gas heaters secured with chains were stolen from the drive-through clinic. The spokesman said they were sorting out replacements and weren't seeking donations of heaters from the public, but monetary donations to the hospital were always welcome.
Anyone with information about the whereabouts of the heaters is encouraged to contact Blue Mountains Police.
The spokesman reminded Blue Mountains residents of all ages to continue to get tested if they have symptoms of COVID-19 including fever, cough, sore/scratchy throat, and shortness of breath.
The hours for the drive-through clinic are 9am to 12.30pm and 1pm to 4pm, seven days a week.