In the middle of the bushfire crisis gripping New South Wales, there continues to be glimpses of goodwill and community on the fire grounds.

Grateful homeowners have left a touching note to crews who were working to save their home on the state's Central Coast.

LIVE COVERAGE: Bushfire emergency hits NSW and Queensland

Firefighters battle the blaze at Mangrove Mountain, on the NSW Central Coast. (Wolter Peeters/The Sydney Morning Herald.)

"No one is home," the note said, scrawled in pen on the front door of the Mangrove Mountain property.

"Tank is full. And pump and hoses are set up.

"House is open help yourself. Drinking water on kitchen bench. Sorry bugger all food but eat what you can find."

The handwritten note ended with the writer saying, "Love your work! Good luck!".

This note was left for firies at home at Mangrove Mountain. (Tiffiny Genders/Twitter)

9News reporter Tiffiny Genders, who is in the area covering the bushfire crisis, tweeted the image, and said she witnessed RFS crews saving the house last night.

"Love these messages left for @nswRFS crews," she said.

There have been several instances where either firies or homeowners have left notes for one another during the emergency that's been gripping the state for weeks now.

Last month, a homeowner on the mid-north coast returned to his home to find a message from crews who saved his house.

"It was a pleasure to save your house. Sorry that we could not save your sheds. PS – we owe you some milk."

Rachel Rowe from the Byron Bay hinterland wrote a message to the firies about key details of where there was a water tank and a swimming pool, also inviting crews to raid the fridge.